Operation of a k jetronic fuel system. 1 Components overview.
Operation of a k jetronic fuel system As Gasoline Fuel-Injection System K-Jetronic Robert Bosch,Robert Bosch GmbH Staff,2001-10 The familiar yellow numbering system and a glossary of technical terms New for VW Audi Citroen Peugeot Fiat Lancia Fuel management systems system over view operation data acquisition and processing central injection unit Mono Motronic Bosch Fuel Injection In 1997 alone, the figure was 4. When the D-Jetronic electronic fuel injection was first introduced, there were very few old schools mechanics who fully understood how it worked. ) that had improved characteristics, and still is a dominant force in fuel injection systems today. Perform an equal flow and pattern test of injectors. The other part is verifying that the fuel pressure regulator is holding control pressure. accumulator. Summary. / 1971 142 E 102 color. Door op 'alles accepteren' te klikken, accepteert u om alle cookies te The familiar yellow Technical Instruction series from Bosch have long proved one of their most popular instructional aids. This system basically consists of a fuel pump and filter, a regulator of presión, a valve injection, position sensor, flow meter for air flow, sensor temperature and the air conditioner, among others. It will make your fuel pumps run noisy, and it can K-jetronic - MRC-technics - Free download as PDF File (. Its a bit of long video but if you K-Jetronic Since its introduction, the K-Jetronic gasoline-injection system has pro-ved itself in millions of vehicles. (2) Changes in Differential Pressure move the control valves in the upper chamber #k-jetronic #bosch #youtube This episode is a basic insight to the workings of the bosch K-jetronic CIS fuel metering head. n All injectors are wired together and fire simultaneously, Bosch KE-Jetronic Continuous Injection System Mechanical Fuel Injection Overview Part 1of 6 FUEL INJECTION SYSTEM - BOSCH CIS-E 1986 Fuel Systems MERCEDES-BENZ CIS-E ELECTRONIC CONTROL SYSTEM DESCRIPTION OPERATION ON-BOARD DIAGNOSTIC READOUT SYSTEM This amount of fuel is sent to intake manifold, so we could say that the system Jetronic only takes care of control fuel flow. The 2. Intermediate storage of calculated values for subsequent processing also occurs here. electric fuel pump. Bosch K-Jetronic A simplified idiots guide (as written by one) to the operation of the Bosch K-Jet mechanical fuel injection system. Poor power 1)Incorrect tune up specs or worn tune up parts with K-Jetronic for 8 of them. The Mono-Jetronic system uses a single injector located above the throttle body to inject fuel into the intake manifold. (except for certain modes of engine operation, such as cold start engine operation under full load, etc. idle SuppLementary functions " Overrun fuel cut Basic adjustment of throttle valve =>page 25-84 Vacuum connection (engine code EG) =>page 25-101 Vacuum connection, (engine code DX 11. It is designed for automotive professionals and enthusiasts seeking a deeper understanding of Bosch's mechanically controlled fuel injection technology. In simple terms, it is a form of mechanical fuel injection. Other than on K-Jetronic, fuel pump relais normally is not a common source of failure. If the flow test failed there are only a couple of things it could be. A thorough understanding of the various compo-nents is required before working on K-Jetronic K-Jetronic Fuel supply An electrically driven fuel pump delivers K-Jetronic the fuel to the fuel distributor via a fuel System overview accumulator and a filter. Fuel Pump: It uses to supply fuel from the tank to the fuel injector. K-Jetronic System overview The K-Jetronic is a mechanically and hydraulically controlled fuel-injection system which needs no form of drive and which meters the fuel as a function of the The KE·Jetronic fuel'injection , system System overview. The K-Jetronic pump requires no form of drive and one of its K-Jetronic Since its introduction, the K-Jetronic gasoline-injection system has pro-ved itself in millions of vehicles. 4 Gaskets. This system is the updated version of the K-jetronic system with an electronic control module. That is the The technical instruction booklet Fuel Injection - Con- When installing the mixture control unit, tighten the tinuous Injection System (CIS) at the back of the fastening screws uniformly. 0 L-Jetronic Component Identification 4. txt) or read online for free. While the system pressure of 80 psi still allowed for adequate atomization, some of the fuel would always remain in the intake port K-Jetronic Fuel Injection System K-Jetronic is a mechanically and hydraulically operated fuel injection pump, introduced by BOSCH GmbH in the year 1973. This development was a direct result of the advantages which are inherent in the injection of gasoline with regard to demands for economy of operation, high output power, and last but not least improvements to the quality of In the 1950s, Mercedes-Benz relied mostly on Bosch’s singular plunger-pump-style mechanical fuel injection and conventional carburetors on nearly all of its post-war models. K-Jetronic System overview 13 Fuel supply 14 Fuel metering 18 Adapting to operating conditions 24 Supplementary functions 30 Exhaust-gas treatment 32 operation, high output power, and last but not least improvements to the quality of the Presumably they isolate the rest of the system from pressure pulses from the frequency valve operation. E21 3er 323i models are equipped with the Bosch K-Jetronic system, whereas E30 3er 320i and 325i models are fitted with the The Bosch KE-Jetronic fuel-injection system is fitted to Escort RS Turbo models and is a further development of the K-Jetronic system. 0b K-Jetronic system inlet manifold and associated components – 16v engine. The KE2-Jetronic system is based upon the Fuel injection system «K-Jetronic» Model engine «KR «equipped with a mechanical constant fuel injection system «K-Jetronic» Bosch company. 10 Engine wiring harness The document provides an overview of the Bosch D-Jetronic fuel injection system used in various Mercedes-Benz, Porsche, Saab, Volkswagen, and Volvo models from the 1970s-1980s. The only vehicle that runs a higher pressure than this is the Porsche Turbo Carrara models from 1975 to 1979 which have a system pressure of 600 kpa. K-Jetronic Since its introduction, the K-Jetronic gasoline-injection system has pro-ved itself in millions of vehicles. This development was a direct result of the advantages which are inherent in the injection of gasoline with regard to demands for economy of operation, high output power, and last but not least improvements to the quality of Gasoline Fuel-Injection System K-Jetronic Robert Bosch,Robert Bosch GmbH Staff,2001-10 The familiar yellow Technical numbering system and a glossary of technical terms New for VW Audi Citroen Peugeot Fiat Lancia Fuel management systems system over view operation data acquisition and processing central injection unit Mono Motronic Bosch Fuel Whilst I've got it out of the car I thought I'd give you a quick look at a fuel distributor from a Bosch KE Jetronic or CIS injection system. It was dropped due to unreliability, but it inspired Bosch to develop the similar but more successful D-Jetronic system, introduced by Volkswagen for 1968 (which required a patent licensing agreement between Bendix and Bosch) as a way of This Gasoline Fuel-Injection System – K-Jetronic PDF Download shop manual contains detailed illustrations and step-by-step instructions for repair and maintenance. The injectors are constantly sprayed the fuel into the intake manifold to the intake valves. WARNING: Unsafe Use of this machine may cause serious injury or Death That's good that you have the 0438100034 fuel distributor because it would be near impossible to take the US K-Jet with Lambda system, remove the frequency valve, and get good operation IMO. K jetronic system Gasoline-injection systems Overview 10 KE-Jetronic System overview, advantages 12 Fuel supply 14 Fuel metering 18 Adaptation to operating conditions 22 Supplementary functions 33 Electrical circuitry 36 Workshop testing techniques 38 KE-Jetronic Since their introduction, the KE-Jetronic systems have proved them-selves in millions of automobiles. K-Jetronic, a mechanically-operated injection system, is called. In the K-Jetronic system, the injection valve sprays fuel through a mechanical mechanism, where the fuel is Mechanical fuel injection systems first saw light of day at the turn of the century, however the following 100 years has seen the system evolve from a very basic and almost crude fuel delivery system, to the recent mass produced versions of the Bosch K and KE Jetronic. Filters: The filters are used to remove the solid contamination from the fuel. (2) Fuel Accumulator: The accumulator is the first of the components in the fuel system after the pump. It was dropped due to unreliability, but it inspired Bosch to develop the similar but more successful D-Jetronic system, introduced by Volkswagen for 1968 (which required a patent licensing agreement between Bendix and Bosch) as a way of basic operation of the Bosch K Jetronic injection system with diagnostic chart : OSM Home : The K Jetronic is a full mechanical injection system with continuous injection (CIS). Nearly all D-Jetronic systems run at 2. I made some notes from this video in preparation of the day that I obtain a KE Jetronic Fuel Pressure hose apparatus. Link to previous videos: https://www. Even K-Jetronic did not manage to Fuel circulation The Bosch D-Jetronic fuel injection system injects intermittently and determines amount of fuel by opening times of injectors. Main system consists of one injector for each cylinder, a cold start injector and a pressure regulator, which maintains fuel pressure at 28 psi (2. 8 Throttle valve switch. KE-Jetronic system pressure is usually around 5. Engine air path details «KR»: 1 - branch pipe for K-Jetronic Since its introduction, the K-Jetronic gasoline-injection system has pro-ved itself in millions of vehicles. The Bosch K-Jetronic fuel-injection system is of the continuous injection type and supplies a precisely controlled quantity of atomised fuel to each cylinder under all operating conditions. acceleration. 317,000 miles and counting K-Jetronic Since its introduction, the K-Jetronic gasoline-injection system has pro-ved itself in millions of vehicles. which is the small black box screwed to the side of the Fuel Distributor. Below are the typical pressure values in bars for the various components of this system: Fuel Injection Valve Operation. The KE·Jetronic fuel'injection , system System overview. Refitting 4 Refitting is The average system pressure on all K-Jetronic fuel systems should be 520 kpa. 36, is a mechanically and continuously operating fuel injection system which does not have to be driven by the The familiar yellow Technical Instruction series from Bosch have long proved one of their most popular instructional aids. (K-lambda only) Function: Finely adjusts fuel pressure based on inputs from the Jetronic control unit, which receives signals from the oxygen sensor system. 4 shows the fuel distributor, primary pressure regulator and air flow sensor from the Bosch K Jetronic system. A thorough u nderstanding of the v arious compo-nents is required before w orking on K-Jetronic fuel systems . I would like to provide my view on this in an effort to help as much as I can. Apart from minor alterations the basic principles of the hydraulics and mechanics used on the K-Jetronic system are unchanged on the KE-Jetronic system. No, I am sure it doesn't have one. Before trouble-shooting, testing or adjusting the K-Jetronic fuel injection system, the ignition sys-tem and the mechanical system of the This Gasoline Fuel-Injection System – K-Jetronic PDF Download shop manual contains detailed illustrations and step-by-step instructions for repair and maintenance. Pressure Regulator: It uses to handle and maintain the pressure This is the commercial name of a technique developed by Bosch in the years 1974 for fuel injection. The M-B fuel injection system you’re most likely to find in Look in the tank before you start it as you don't want old fuel/dirt/grit/rust getting to the the fuel system as that will just cause more problems. This development was a direct result of the advantages which are inherent in the injection of gasoline with regard to demands for economy of operation, high output power, and last but not least improvements to the quality of different from other fuel injection systems. Injectors - Since D-Jetronic fuel pressure is the same for all applications, and the ECU Bosch K Jetronic fuel injection. Control Pressure Regulator Location: Mounted to the front of the engine Bosch Jetronic is one of the first systems to bring electronic fuel injection management to the consumer market, and today we’ll go back in time to take a closer look at this important piece of automotive engineering. The main difference between the two types is that on the Fuel delivery to the injectors is controlled two ways: (1) The air sensor arm movement moves the control plunger as it did on previous K systems. For each symptom, it lists possible causes such as issues with sensors, valves, fuel pressure, or K-Jetronic fuel injection (318i-320i-323i) Dutch member Wondermike composed a nice grocery list a while ago for the entire operation. Many vehicles are equipped with “K-Jetronic” injection: the famous DeLorean DMC-12 manual describes the components and operation of the K-Jetronic fuel injection system in detail. Two types of fuel injection system are fitted. 10 Upper section K-Jetronic is a mechanical fuel injection system developed by Bosch in the 1970s and is used in a wide variety of vehicles around the world. I explain how the fuel injection system works and what the various parts do. US 308QV came in two different configurations: K-Jetronic Since its introduction, the K-Jetronic gasoline-injection system has pro-ved itself in millions of vehicles. 4. The system measures and analysis the air flow and takes into account all changes in the engine’s operation to reduce the Today’s standard spark-ignition engines employ manifold injection for mixture formation outside the combustion chamber. A fuel system similar to K, KE-Jetronic in K-Jetronic Since its introduction, the K-Jetronic gasoline-injection system has pro-ved itself in millions of vehicles. What do you expect? I'm the 142 guy. D-Jetronic References Two papers were published in the Bosch Technical Journal that gave overall descriptions of the D-Jetronic system, components, and operation. On the earlier D-Jetronic system, fuel delivery was regulated by an intake manifold pressure sensor. In more elaborate terms, KJet is a Continuous Injection System (commonly called CIS), where unlike later L-Jetronic or “standard” Electronic Fuel Injection The main goal of K Jetronic system is to continuously meter fuel in proportion to the amount of air at the intake stroke. When open they spray a fine atomised mist of fuel behind the inlet valve, which simply waits there until it is drawn in on Porsche successfully used Bosch’s more emissions-friendly K-Jetronic (or CIS for Continuous Injection System) mechanical injection system for many years on the 911, which continually injected fuel into each of the engine intake ports. There is not a fuel pressure regulator on K Jetronic but rather a system pressure regulator that is located in the lower chamber of your fuel distributor. A failed accumulator will make your engine hard to start when hot. This development was a direct result of the advantages which are inherent in the injection of gasoline with regard to demands for economy of operation, high output power, and last but not least improvements to the quality of The document provides details on the Bosch Mono-Jetronic and Mono-Motronic fuel injection systems. The system pressure can be adjusted if needes by adding or removing shims. Unijet Generation 2: up to 1600 Bar (23520 psi) EDC 16 Generation 3: up to 2000 Bar + (29400 psi) • Denso: 1st generation: up to 1450 Bar (21315 psi) ECD-U2P 2nd generation: 1800 Bar + (26460 psi) Its time to stop guessing what the problem is. This development was a direct result of the advantages which are inherent in the injection of gasoline with regard to demands for economy of operation, high output power, and last but not least improvements to the quality of Whereas the System overview 13 call for higher engine output was the Fuel supply 14 foremost consideration at the start of Fuel metering 18 the development work on gasoline Adapting to operating conditions 24 injection, today the target is to Supplementary functions 30 achieve higher fuel economy and Exhaust-gas treatment 32 lower toxic emissions. This development was a direct result of the advantages which are inherent in the injection of gasoline with regard to demands for economy of operation, high output power, and last but not least improvements to the quality of That's good that you have the 0438100034 fuel distributor because it would be near impossible to take the US K-Jet with Lambda system, remove the frequency valve, and get good operation IMO. The fuel pressure regulator is part of the fuel distributor. ii. 1979 marked the introduction of a new system MECHANICAL MULTI – POINT SYSTEM. This development was a direct result of the advantages which are inherent in the injection of gasoline with regard to demands for economy of operation, high output power, and last but not least improvements to the quality of Here is a block diagram showing the components of D-Jetronic (V8 shown). 2)Inadequate fuel delivery An insufficient supply of fuel can be the result of a binding airflow sensor,incorrect control,incorrect system pressure or restricted injectors. This development was a direct result of the advantages which are inherent in the injection of gasoline with regard to demands for economy of operation, high output power, and last but not least improvements to the quality of The system is based on the K-Jetronic mechanical system, with the addition of an electro-hydraulic actuator, essentially a fuel injector inline with the fuel return that instead of injecting fuel allows fuel to bypass the fuel distributor, which varies the fuel pressure supplied to the mechanical injection components based on several inputs The Bosch KE-Jetronic fuel-injection system is fitted to Escort RS Turbo models and is a further development of the K-Jetronic system. 3 Screw. g in BMW, Porsche, Opel, Volkswagen). 1 bar (exception: Volvo). It must be stressed that the implementation of this system by Volvo on K-Jetronic Since its introduction, the K-Jetronic gasoline-injection system has pro-ved itself in millions of vehicles. ) and regulated by a fuel dispenser. 1. A 142 of course. Many vehicles are equipped with “K-Jetronic” injection: the famous DeLorean DMC-12 Injection systems for gasoline engines could be operated mechanically, electronically or a combination of the two. Cables on fuel pump can corrode or fuel pump can be worn. It describes the system's air intake, fuel, and electronic control subsystems and how they work together to monitor factors like intake manifold pressure and control fuel injection duration for The technical instruction booklet Fuel Injection - Continuous Injection System (CIS) at the back of the manual describes the components and operation of the K-Jetronic fuel injection system in detail . The operation of the engine at idle and forced idle is controlled by a system,regardless of the fuel system. doc PAGE 2 OF 10 28 October 2004 The normal operating pressure within this system is approximately 5 bar (75 psi) and at this This unit has an important role to fill in the operation of the Bosch K Jetronic system. The Best Book: The KE-Jetronic is not overly enthusiastic about ethanol containing fuel, especially when the car sits a lot. Common Rail Diesel Fuel Systems Examples of typical common rail system maximum fuel pressures: • Bosch: Generation 1: up to 1350 Bar (19845 psi). EN. 2 Detach the fuel filter from the side of the cleaner casing (leave the fuel lines attached to the filter) and the air inlet hose from the front end of the case. These fuel injection systems are very different in operation to electronic fuel injection or, EFI & require very different equipment to service, fault diagnose & repair. Description of the K-Jetronic fuel injection system fuel injection system "K-Jetronic" It is a mechanical continuous fuel injection system. 0 kg/cm 2). also later injected E28 The K-Jetronic system is equipped with a number of electrical components, such as electric fuel pump, warm-up regulator, auxiliary-air device, start valve and thermo-time switch. 1979 marked the introduction of a new system K-Jetronic Since its introduction, the K-Jetronic gasoline-injection system has pro-ved itself in millions of vehicles. A thorough understanding of the various components is required before working on K-Jetronic fuel systems . K-jetronic can produce the proper mixture depending on the operating conditions of your engine. K-Jetronic System overview The K-Jetronic is a mechanically and hydraulically controlled fuel-injection system which needs no form of drive and which meters the fuel as a function of the Fuel and exhaust systems - K-Jetronic fuel injection - 16 valve engines 4C•3. OBJECTIVES. Bosch K Jetronic fuel injection. 2 Schematic diagram of the K-Jetronic system with closed-loop lambda control 1 Fuel tank, 2 Electric fuel pump, 3 Fuel accumulator, 4 Fuel filter, 5 Warm-up regulator, 6 Injection valve, 7 systems 14 Fig. It is an analogue computer, that does not rely on digital signalling but rather analogue threshholds with a pulse width modulator (PWM) being its heart. (ECU) is the brains of the system, taking information from the inputs and controlling the outputs. Built to meet the needs of high mercedessource Product - Has your rear-mounted fuel accumulator failed on your 1976 to 1993 K-Jetronic or KE-Jetronic fuel system In this 9 minute instructional video, Kent will explain how to test your fuel accumulator to determine whether or not it has failed internally. If pressure drops below the opening limit, they close. The first production electronic fuel injection system was the Bendix Electrojector, offered briefly by Chrysler for 1958. 0 Operating Conditions 5. Mixture control unit The task of fuel management is to meter, or allocate, the correct quantity of fuel which corresponds to the The technical instruction booklet Fuel Injection - Continuous Injection System (CIS) at the back of the manual describes the components and operation of the K-Jetronic fuel injection system in The L-Jetronic is an electronically controlled fuel injection system which has the advantage of direct air flow sensing. I have recently secured these documents from the Bosch archivist and there are links below to the PDF files. You can find a good description of the operation in the service manual. This development was a direct result of the advantages which are inherent in the injection of gasoline with regard to demands for economy of operation, high output power, and last but not least improvements to the quality of How two M-B systems work in overall view. multi-part Bosch K and KE Jetronic article. Label the following components on the K – JETRONIC diagram. Both systems use a central electronic control unit that receives input from sensors to K-Jetronic Since its introduction, the K-Jetronic gasoline-injection system has pro-ved itself in millions of vehicles. 7 Idle speed adjustment screw. K-Jetronic measures air sucked in by the engine by means of a flow sensor. This development was a direct result of the advantages which are inherent in the injection of gasoline with regard to demands for economy of operation, high output power, and last but not least improvements to the quality of Summary. 2-158. Its first job is to help smooth out any pulses in the flow of the fuel, this is achieved by K-Jetronic system Removal 1 Remove the air cleaner element as described in Chapter 1. In 1976, the K-Jetronic was the first automo-tive system to incorporate a Lambda closed-loop control. Also it is a fuel hose type, it only connects vacuum. The task of a 1. (2) Changes in Differential Pressure move the control valves in the upper chamber Bosch D-Jetronic and L-Jetronic (ECGI) Both of these Electronically Controlled Gasoline Injection systems ( ECGI) are almost identical ex cept for one feature. 0 L-Jetronic Fuel Injection Theory of Operation 3. Plus a forum where Dr-DJet and other experts help with competent advice and repair instructions. It is a sophisticated system that uses pressure and E21 3er 323i models are equipped with the Bosch K-Jetronic system, whereas E30 3er 320i and 325i models are fitted with the Bosch L-Jetronic system. Thanks for the clarification on the system’s operation. com/Tips on how to adjust the fuel mixture on air-cooled Porsche 911s running Bosch CIS K-Jetronic Fuel Inje Bosch Jetronic is one of the first systems to bring electronic fuel injection management to the consumer market, and today we’ll go back in time to take a closer look at this important piece of automotive engineering. 9 Connector. 1 Components overview. The technical instruction bookletFuel Injection- Con-tinuous Injection System (CIS)at the back of the manual describes the components and operation of the K-Jetronic fuel injection system in detail. In 1978 L-Jetronic was the first system with lambda controlled closed loop control. 1979 marked the introduction of a new system The Bosch K-Jetronic Fuel-Injection System Technical Instruction Manual offers comprehensive guidance on the operation, troubleshooting, and maintenance of the K-Jetronic fuel-injection systems. This manual provides detailed information on the operation, maintenance and troubleshooting of the Bosch K-Jetronic Fuel Injection System. Joined Sep 11, 2021 Messages 42 Location Hook Hampshire Car Mercedes W123 280CE. This development was a direct result of the advantages which are inherent in the injection of gasoline with regard to demands for economy of operation, high output power, and last but not least improvements to the quality of mercedessource Product - Factory training manual procedure followed step-by-step. Nov 10, 2021 #8 psi. has the function of supplying the different cylinders with exactly the same amount of fuel. I didn't draw them like DESCRIPTION The Bosch Continuous Injection System, Fig. Can test with magnet on a stick. full·load. 0 and 2. The technical instruction bookletFuel Injection- Con-tinuous Injection System (CIS)at the back of the manual describes the components and The construction and principle of operation of the K-Jetronic is dealt with in this Technical Instruction manual. Thisis necessary due to the added complexity and increased power output of the engine, The system provides a higher degree of mixture strength control than that provided by the K-Jetronic system. The pulse generator is located in the bottom of the distributor and tells the ECU how fast the engine is turning by closing Under normal operation the fuel pump runs Bosch KE-Jetronic Continuous Injection System Mechanical Fuel Injection Overview Part 1of 6 FUEL INJECTION SYSTEM - BOSCH CIS-E 1986 Fuel Systems MERCEDES-BENZ CIS-E ELECTRONIC CONTROL SYSTEM DESCRIPTION OPERATION ON-BOARD DIAGNOSTIC READOUT SYSTEM Operation Fuel system An electrically driven fuel pump forces fuel through a filter, into the main system. In this 13-minute CIS training video, Kent will walk you through the steps recommended by Mercedes Benz to fully test the operation of the EHA valve on 1984 to 1993 4, 6, and 8-cylinder engines with KE-jetronic fuel injection. components of an 8-cylinder. idle SuppLementary functions " Overrun fuel cut Gasoline Fuel-Injection System K-Jetronic. K Jetronic is a simple system really, but it needs every part of it running correctly to run well. You will be surprised by what Kent found on this 560SL engine. 2 Intake elbow. 5. 2 million multipoint fuelinjection (MPI) systems. iii. The engine control unit (ECU) is the brain of the injection. Faulty fuel pump. It outlines several common symptoms like the engine not starting when cold or warm, irregular idling, poor performance, and high fuel consumption. The primary purpose of the fuel-injection system is to provide the engine with an air/fuel mixture which is best suited to the prevailing operating state. 1988 Mk1 Golf GTi Cabriolet 1. K-Jetronic Fuel Injection. This system uses continuous spraying behind the intake valve to adjust the airflow. US 308QV came in two different configurations: In 1997 alone, the figure was 4. It is therefore sensitive to EMC disturbance and needs preselected components and a manual trimming to work reliably. Its first job is to help smooth out any pulses in the flow of the fuel, this is achieved by Section B2 Fuel injection system K-Jetronic Naturally aspirated engines are fitted with the Bosch K-Jetronic continuous fuel injection system. It then explains the four-stroke The K-Jetronic is a mechanical system in which the fuel is continuously metered in accordance with the amount of air drawn in by the engine. Pic. 8cc DX, K-jet. All hoses can be replaced rather easily using the cover under the rear seat and a garage jack. The<br /> theoretical ideal for complete K-Jetronic Since its introduction, the K-Jetronic gasoline-injection system has pro-ved itself in millions of vehicles. This is a The first test that you should always carry out when you have a problem with K-Jetronic or KE-Jetronic, is the return volume test. This development was a direct result of the advantages which are inherent in the injection of gasoline with regard to demands for economy of operation, high output power, and last but not least improvements to the quality of Download scientific diagram | Schematic drawing of L-Jetronic port electronic fuel injection system (Source: Heywood 1998) from publication: Analysis of a hydrogen fuelled internal combustion Two papers were published in the Bosch Technical Journal that gave overall descriptions of the D-Jetronic system, components, and operation. The injected fuel mass is not determined by the fuel injector but rather pre-specified by the fuel distributor. Daily drive. The name K is taken from the German word “Kontinuerlich” meaning continuous. This system is both simple in concept and complex in its implementation. The system is unique in its operation and leaves many garage Porsche 911 DIY Repair Blog: http://joe-engineer. This development was a direct result of the advantages which are inherent in the injection of gasoline with regard to demands for economy of operation, high output power, and last but not least improvements to the quality of Essential for stable fuel delivery and engine performanceDesigned for K-Jetronic GTI 8V & 16V enginesPrecise fitment ensures compatibility and easy installationThe fuel pressure accumulator is a critical component for K-Jetronic GTI 8V and 16V engines, ensuring smooth fuel flow and consistent pressure for optimal performance. the back of the fuel distributor. They provide a clear and concise overview of the theory of Electronically controlled systems Mechanical systems K-JetroniC Fuel supply Outline of system Electric fuel pump Fuel accumulator Fuel filter Primary-pressure regulator Fuel-injection valve basic operation of the Bosch K Jetronic injection system with diagnostic chart : OSM Home : The K Jetronic is a full mechanical injection system with continuous injection (CIS). D-Jetronic found its successor in L-Jetronic e. On the KE-jetronic system there is an electro-hydraulic pressure regulator (17). Check pump operation, replace if necessary. 5 Throttle valve housing. In fact, it's really not all that complicated, and problems can usually be analyzed with no more than a pressure gauge, a multimeter and a little common sense. Each cylinder has its own independent Mechanical fuel injection - Bosch K-Jetronic, Bosch K Jetronic Fig. 3 - axis of the lever; 4 - to intake valves Based on the number of questions we get about Bosch D-Jetronic Fuel Injection, many owners (as well as many professional mechanics) find its operation and maintenance arcane and mystifying. The basic “ingredients” of a well running K-Jet system are fuel, air, and light. 8i XR4x4s, whereas the Bosch KE system is fitted to all Escort RS Turbos. Time to stop throwing parts at it! Begin with some key diagnostic tests. REPAIR MAINTENANCE OPERATION OF MOTOR VEHICLES Mercedes-Benz E-Class W123 (from 1976 to 1985, the year of issue) Design and specifications: Engine adjustment: Ignition system: Power system: The fuel injection system K-Jetronic: The fuel injection system L-Jetronic: Checking injectors: Adjusting the engine idling: Check valve further fuel In the 1950s, Mercedes-Benz relied mostly on Bosch’s singular plunger-pump-style mechanical fuel injection and conventional carburetors on nearly all of its post-war models. If this is defective the symptoms will be backfire,poor power,running rough and stalling. Mercedes followed in 1975. A thorough understanding of the various compo-nents is required before working on K-Jetronic fuel systems. The mixture formation system produces an air/fuel mixture (based Detailed instruction manual for Bosch K-Jetronic mechanical fuel injection system, covering components, operation, and troubleshooting. But there are 4 tasks that you should complete during normal car maintenance. The injection valves inject the fuel con-tinuously into the intake ports of the engine. The technical instruction bookletFuel Injection- Con-tinuous Injection System (CIS)at the back of the manual describes the components and Bosch K-Jetronic Fuel Injection Part 2. full load operation, etc. The main difference between the two types is that on the 5. Bosch took a step backwards, and introduced the K- Jetronic semi mechanical system, because of the lack of experience / knowledge or expense problems that the D-Jetronic system suffered from. Higher control pressure means less fuel or leaner operation. It was dropped due to unreliability, but it inspired Bosch to develop the similar but more successful D-Jetronic system, introduced by Volkswagen for 1968 (which required a patent licensing agreement between Bendix and Bosch) as a way of An overview of Bosch D-jetronic as used in Jaguar V12s from 1975 to 1980. It will fire up, but it only Bosch Fuel Injection Systems, Forbes Aird ISBN-10: 1557883653 This easy to read manual includes basic operating principles of Bosch's CIS K-Jet, KE and pulsed fuel injection systems; D-L- and LH-Jetronic, and LH-Motonic tuning and troubleshooting; and some info about high-performance applications. 6 O-ring. Both systems were further developed. This is the variable Parameter segment, where your Vehicles Engine Management can be well and truly DE-OPTIMISED. The basic principle of operation is that the accelerator pedal controls the movement of the K-Jetronic Since its introduction, the K-Jetronic gasoline-injection system has pro-ved itself in millions of vehicles. K-Jetronic Fuel System. The valve opens & closes at a variable rate; manual describes the components and operation of the K-Jetronic fuel injection system in detail. Yes, the car won’t start any more. n Current through windings causes magnetism pulling armature and attached needle valve up and way from valve seat allowing fuel to flow. I'll apologise now for the fuzzy images. 2 million, comprised of 1 million throttle-body injection (TBI) systems and 3. The signal from the sensor is used to determine the mode of operation of the engine (idle or full throttle). However, as more and more versions of this electronic injection system came out (K-Jetronic, the entire LE-Jetronic and LU Summary. are variants, notably the “KE-Jetronic”, which adds an electronic controller. System Pressure is the pressure provided in the bottom half of the distributor by the combination of the fuel Gasoline Fuel-injection System KE-jetronic Robert Bosch GmbH. 2 Schematic diagram of the K-Jetronic system with closed-loop lambda control 1 Fuel tank, 2 Electric fuel pump, 3 Fuel accumulator, 4 Fuel filter, 5 Warm-up regulator, 6 Bosch K-Jetronic A simplified idiots guide (as written by one) to the operation of the Bosch K-Jet mechanical fuel injection system. Parts p K-Jetronic Since its introduction, the K-Jetronic gasoline-injection system has pro-ved itself in millions of vehicles. The mechanical K-Jet fuel injection system (continuous injection system or CIS) has these two regulators L-Jetronic System - Fuel Injectors n Open when energized by ECU - not continuous as K -Jetronic. 2. Even K-Jetronic did not manage to Data are erased when the system is switched off and must be continuously updated during operation. It was dropped due to unreliability, but it inspired Bosch to develop the similar but more successful D-Jetronic system, introduced by Volkswagen for 1968 (which required a patent licensing agreement between Bendix and Bosch) as a way of Mercedes followed in 1975. WARNING: Unsafe Use of this machine may cause serious injury or Death Bosch K thermo time SwitCh Fuel injectors fitted to the Bosch K and KE system open at a predetermined pressure in much the same way a pressure relief valve operates. A thorough understanding of the various compo-nents is required before working on K-Jetronic Mechanical fuel injection systems first saw light of day at the turn of the century, however the following 100 years has seen the system evolve from a very basic and almost crude fuel delivery system, to the recent mass produced The Bosch K-Jetronic Fuel Injection System is a mechanical fuel injection system that was used on many cars in the 1980s and 1990s. advantages of the j(E·Jelronic B;>sic fun<;:tlons , Fuel supply Fuct rnl)tering Mixture adaptation " Basic mi,ture adaptation EIec1rOmC control unit (EeU) Electro-hydraulic pressure actuator Cold'start, warm·up. 16 K-Jetronic system speed sensing module and fuel pump safety module locations 1. Injector and bracket. This development was a direct result of the advantages which are inherent in the injection of gasoline with regard to demands for economy of operation, high output power, and last but not least improvements to the quality of Article «Possible malfunctions of the L-Jetronic system, their causes and methods of elimination» from the section «Power unit/Fuel injection «K-Jetronic»» car repair manuals «Mercedes-Benz W123» (W123) 1976-1985 years of release. The fuel system has the following major parts and functions: Fuel Tank: It uses to store the fuel. . 13. Everyhing about Bosch D-Jetronic (some wrongly write D-Jetronik) fuel injection system equiped cars of all manufacturers from A as in auxiliary air valve via E las in ECU and M as in MAP sensor to Z as in zero adjustment. 1 bar, meaning between 2. The system is completely From the fuel distributor the fuel flows to the injection valves. On Ebay there is one for sale for approximately $100. ,2000 Gasoline Fuel-Injection System K-Jetronic Robert Bosch,Robert Bosch GmbH Staff,2001-10 The familiar yellow Technical Instruction series from Bosch have long proved one of their most popular instructional aids They provide a clear and concise overview of the theory of operation K-Jetronic Since its introduction, the K-Jetronic gasoline-injection system has pro-ved itself in millions of vehicles. Trigger contacts need special grease. As the plunger is pushed upward in the bore, fuel flow to the upper chamber of the fuel distributor increases. 0 Troubleshooting the Porsche 4B•4 Bosch K and KE fuel injection systems 1. This development was a direct result of the advantages which are inherent in the injection of gasoline with regard to demands for economy of operation, high output power, and last but not least improvements to the quality of K-Jetronic Since its introduction, the K-Jetronic gasoline-injection system has pro-ved itself in millions of vehicles. It is a sophisticated system that uses pressure and airflow to control the amount of fuel that is injected into the engine. i. 1 To ignition control unit. That’s a whole generation of fast Fords, and there are still a great many of them in operation today. To check the operation of the fuel pressure regulator, first you run the engine so that the WUR has warmed up to its normal operating temperature. Over the years, controlled system. It optimizes the air-fuel mixture to achieve the desired [] If that is the case, your ECU is okay and you should check fuel pump relais, cabling and the fuel pump itself. 25-pin connector, pin 1 is left. My fuel flow test was low. This development was a direct result of the advantages which are inherent different from other fuel injection systems. This development was a direct result of the advantages which are inherent in the injection of gasoline with regard to demands for economy of operation, high output power, and last but not least improvements to the quality of Fuel delivery to the injectors is controlled two ways: (1) The air sensor arm movement moves the control plunger as it did on previous K systems. This development was a direct result of the advantages which are inherent History of fuel supply system of injection engines, structure of the fuel supply system of injection engines, division of the fuel supply system of injector engines into main groups, K-Jetronic Operation: In fuel injection systems of Bosch L-Jetronic type, the volume of air drawn in by the engine is measured. Fuel Injector: The fuel injector uses to inject fuel into the combustion chamber. 3 Unscrew and remove the casing retaining nuts from the inner wing panel and lift out the casing. The document discusses symptoms and causes of issues with the Bosch K-Jetronic fuel injection system, and provides potential remedies. The Mono-Motronic system integrates fuel injection and ignition control. On the newest L-Jetronic system, the fuel delivery is regulated by the amount of air flow into A fuel injection system "K-Jetronic" is a mechanical system for continuous injection of fuel. That is the injectors on this system spray fuel continuously in a fine atomised spray into the inlet manifold. OP. Save Share Part 2 focused on how to test the system, now using the information from testing, we can move on to tuning and fixing any issues with the KJet system. This development was a direct result of the advantages which are inherent in the injection of gasoline with regard to demands for economy of operation, high output power, and last but not least improvements to the quality of Southport Fuel Injection specializes in the fault diagnosis, repair or reconditioning of Bosch K-Jetronic & KE-Jetronic fuel injection systems found on many European vehicles. fuel filter The Bosch KE-Jetronic fuel-injection system is fitted to Escort RS Turbo models and is a further development of the K-Jetronic system. This development was a direct result of the advantages which are inherent in the injection of gasoline with regard to demands for economy of operation, high output power, and last but not least improvements to the quality of 8-cylinder D-Jetronic ECU. It is eminently important that this value stays constant at all speeds and loads of engine. This is the commercial name of a technique developed by Bosch in the years 1974 for fuel injection. List three main functional areas of the K – JETRONIC. The valve opens & closes at a variable rate; this process is called duty cycle. If you have a low return volume every other test you do will give you false information. ” This means that the fuel is continuously injected into the inlet manifold. 1 Mechanical Injection System The K-Jetronic system operates without a drive and injects the fuel continuously. K – JETRONIC. Fuel management by means of manifold injection It describes the operating concept of a spark-ignition or Otto-cycle engine which uses an externally generated spark to ignite an air-fuel mixture. 0 Introduction to L-Jetronic Fuel Injection 2. D-Jetronic (L-Jetronic, K-Jetronic, etc. Learn how this system delivers fuel to This user manual provides detailed information on the Bosch K-Jetronic and KE-Jetronic mechanical fuel injection systems, including removal and refitting procedures for various manual describes the components and operation of the K-Jetronic fuel injection system in detail. The fuel is supplied by an electrically driven fuel pump which The K-Jet system belongs to the group of CIS injection systems, which stands for “Continuous Injection System. Fuel Management. Jump to Latest It may provide a procedure for checking the operation of the cold start valve and its thermal timer. It details the components and functions of the K Jetronic system, including the Fuel is delivered from the fuel pump to a metering (or fuel distribution) head and depending on the engine's temperature, the correct amount of fuel is delivered via the injectors to the engine. This development was a direct result of the advantages which are inherent in the injection of gasoline with regard to demands for economy of operation, high output power, and last but not least improvements to the quality of Mercedes followed in 1975. After studying this module, the student will be able to correctly in writing and without references:- 1. I have since moved on from working at a Ford main dealer to a Volkswagen Audi dealer in K-Jetronic Fuel Injection Mercedes-Benz cars hav e a long history with vari - ous gasoline injection systems, including exotic ver - sions as the Diesel-like direct injection used in the Gullwing SL of the early 1950’s, spraying fuel right into the combustion chambers themselves. 4 Figure 6. Before trouble-shooting, testing or adjusting the K-Jetronic fuel injection system, the ignition sys-tem and the mechanical system of the Fuel circulation The Bosch D-Jetronic fuel injection system injects intermittently and determines amount of fuel by opening times of injectors. The igntion system is still controlled by a conventional K-Jetronic Since its introduction, the K-Jetronic gasoline-injection system has pro-ved itself in millions of vehicles. Clearly written and illustrated manual describes the components and operation of the K-Jetronic fuel injection system in detail . It injects intermittently into the intake ports. Verifying that the fuel accumulators are holding system pressure was part of that preliminary work. They provide a clear and concise overview of the theory of operation, component design, model variations, and technical terminology for the entire Bosch product line, and give a solid foundation for better diagnostic and servicing. Air-fuel mixture<br /> Operation of the spark-ignition engine is<br /> contingent upon availability of a mixture<br /> with a specific air/fuel (A/F) ratio. A secondary system carries excess fuel from the pressure regulator back to fuel Over the years many forum members have worked hard to provide clarity on how the Bosch K-Jetronic fuel injection system (K-Jet) works on a W124 Mercedes Benz. A fuel system similar to K, KE-Jetronic in Fuel injection system «K-Jetronic» from the section «16-valve engine - Fuel injection «K-Jetronic»» car «Volkswagen Passat B4» 1988-1996 years of production. After verifying all fuel hoses we also look at the hose from intake manifold to MAP sensor. ) and is regulated by fuel distributor-dispenser. Model 107 Maintenance Manual Index K-Jetronic Since its introduction, the K-Jetronic gasoline-injection system has pro-ved itself in millions of vehicles. Southport Fuel Injection specializes in the fault diagnosis, repair or reconditioning of Bosch K-Jetronic & KE-Jetronic fuel injection systems found on many European vehicles. Bosch K is fitted to Escort RS1600is, XR3is, Sierra XR4is and 2. D-Jetronic system is composed of following components: Damper (1, not on all cars), fuel pump with pressure relief valve (2), fuel The Bosch K-Jetronic Fuel Injection System is a mechanical fuel injection system that was used on many cars in the 1980s and 1990s. The mechanical fuel injection system has recently been overshadowed by Normally injection system D-Jetronic is considered maintenance free. I have recently secured these documents Data are erased when the system is switched off and must be continuously updated during operation. This development was a direct result of the advantages which are inherent in the injection of gasoline with regard to demands for economy of operation, high output power, and last but not least improvements to the quality of The K-Jetronic fuel injection system utilizes several types of pressure to manage fuel delivery to the engine. I didn't draw them like that, it has happened during conversion to the Subsection «Fuel injection «K-Jetronic»» from the car repair manual «Mercedes-Benz W123» 1976-1985 years of release from the section «Power unit». I recommend not to put the car into hibernation for a couple of months with the fuel system filled with fuel containing more than 5% ethanol ! If it’s unavoidable, I recommend at least to use a good and proper fuel additive, which Article «Description of the K-Jetronic fuel injection system» from the section «Power unit/Fuel injection «K-Jetronic»» car repair manuals «Mercedes-Benz W123» (W123) 1976-1985 years of release. Reactions: Petrol Pete. The K-Jetronic System overview The K-Jetronic is a mechanically and hydraulically controlled fuel-injection system which needs no form of drive and which meters the fuel as a function of the different from other fuel injection systems. The K-Jetronic is a mechanical fuel injection system which injects continuously and which needs no form of drive whatsoever. Fuel injection system The KE2-Jetronic fuel injection system is fitted to turbocharged engines. Not all K-Jet systems require fuel pressure accumulators because in some vehicles there is enough volume in the lines and components. Most of the information I will use comes from course notes I have from attending the Ford Service Training College at Daventry on the Bosch K-Jetronic fuel injection system training course. Apart from minor alterations the basic principles of the They provide a clear and concise overview of the theory of operation, component design, model variations, and technical terminology for the entire Bosch product line, and give a solid Fuel-management systems, whether of the carburettor or injection types, have the task of preparing an optimum air-fuel mixture. It is compatible with all Windows and Mac operating systems and can be printed for unlimited copies. X: X: X: X: X: X: X: X: Clogged fuel K-Jetronic Since its introduction, the K-Jetronic gasoline-injection system has pro-ved itself in millions of vehicles. Using the Lambda sensor together with Function: Finely adjusts fuel pressure based on inputs from the Jetronic control unit, which receives signals from the oxygen sensor system. Popular with Po Summary. shabazmo Member. 6. Note: Always renew all gaskets and sealing rings on assembly All hose connections are secured with either spring type hose clips K-Jetronic fuel pressure tester Thread starter shabazmo; Start date OP , have you replaced the crank position sensor ? Nov 10, 2021 #7 OP . 0 + 0. My son's '85 Saab has the mechanical Bosch K-Jetronic fuel injection system, also known as "Constant Injection System" for the way the fuel is continuously recirculated from the tank to the fuel distributor & back. pdf), Text File (. Thus the system designation K (taken from This document provides technical instruction for the Bosch K Jetronic fuel injection system used in automobiles. The accumulator has an important role in the operation of the K Jetronic system. Even K-Jetronic did not manage to The primary purpose of the fuel-injection system is to provide the engine with an air/fuel mixture which is best suited to the prevailing operating state. K-Jetronic is a continuous injection system (CIS), which means that the fuel injectors receive and produce a constant flow of fuel, provided there is proper pressure, whenever the engine is running. 1985 k-Jetronic system. Before carrying out any operation on the fuel system The primary purpose of the fuel-injection system is to provide the engine with an air/fuel mixture which is best suited to the prevailing operating state. f he K-Jetroniesystem is a mechanically and hydraulically controlled fuel injeciion system that requires no form of drive. 19 KE-Jetronic fuel-injection system layout and K-Jetronic System overview 13 Fuel supply 14 Fuel metering 18 Adapting to operating conditions 24 Supplementary functions 30 Exhaust-gas treatment 32 operation, high output power, and Fig. 90 )=>page 25-103 Activated charcoal filter system, engine code JH: => Repair group 20. rguahsxxgdcyzlgilobgjrpsoflfddgdzzpaqodqmtoicqizlkbzrgf