Operation of a k jetronic fuel system I hope I have covered all the problem areas and lifted some of the mist surrounding this system. 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. It functioned as a constant injection system with fuel to the injectors being controlled by an airflow metering plate and injector opening controlled by fuel pressure instead of an electronic signal. ) that had improved characteristics, and still is a dominant force in fuel injection systems today. K- and KE-Jetronic Gasoline System overview of K-Jetronic with A-control Injection 10 Systems Updraft air-flow sensor of K-Jetronic Air funnel Sensor plate Relief cross-section Mixture adjusting screw Control pressure (system-pressure regulator) Fuel inlet Metered quantity of fuel Control plunger Barrel with metering slits Fuel distributor Pivot Apr 11, 2020 · The Porsche 928 continuous injection system is very robust when properly set up. A thorough understanding of the various components is required before working on K-Jetronic fuel systems . 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. Introduction . 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. manual describes the components and operation of the K-Jetronic fuel injection system in detail . During operation the intake air quantity is metered by an air-flow sensor installed in front Nov 6, 2010 · Bosch KE-Jetronic Continuous Injection System Mechanical Fuel Injection Overview Part 1of 6 Fig. That is the injectors on this system spray fuel continuously in a fine atomised spray into the inlet manifold. The main goal of K Jetronic system is to continuously meter fuel in proportion to the amount of air at the intake stroke. I made some notes from this video in preparation of the day that I obtain a KE Jetronic Fuel Pressure hose apparatus. Fuel injection, as opposed to carburetion, is a high-pressure system. 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 proper air-fuel mixing This amount of fuel is sent to intake manifold, so we could say that the system Jetronic only takes care of control fuel flow. Before trouble-shooting, testing or adjusting the K-Jetronic fuel injection system, the ignition sys-tem and the mechanical system of the Ask me about this fuel injection system's components, operation, and troubleshooting. Ignition 1 987 722 154. 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 Intake manifold, 8 Cold-start valve, 9 Fuel distributor, 10 Air-flow sensor, 11 Timing valve, 12 Lambda sensor, 13 Thermo-time switch, 14 Ignition 2. 12. Gigante, I can't seem to find it at the moment, but Ferrari released a "K/KE-Jetronic" separate service manual of about 50 pages dedicated to the Bosch FI systems (Ferrari Bosch KE3-Jetronic 3. accumulator. We will also check the system and WUR cold/warm fuel pressures on the car as part of our CIS setup for initial engine startup. Gasoline Fuel-Injection System Mono-Jetronic 1 987 722 105. 2 Combined Mechanical-Electronic Injection System KE-Jetronic is based on the mechanical basic system of K-Jetronic. It then details disassembling the distributor and cleaning each component using various tools and techniques. I can assist with questions about its operation, diagnostics, and troubleshooting common engine issues. 36, is a mechanically and continuously operating fuel injection system which does not have to be driven by the vehicle engine. From the end of 1979, this system was modified by adding a lambda control system (KA-jetronic). The system as described in the Scholl article is very similar to the implementation of D-Jetronic on the Porsche 914 1. The Bosch KE-Jetronic fuel-injection system is fitted to Escort RS Turbo models and is a further development of the K-Jetronic system. Description of the work to be performed (to follow shortly) D. the distro just adjusts pressure and flow according to the demands on the engine. The other part is verifying that the fuel pressure regulator is holding control pressure. 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 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 intake air quantity and injects it continuously onto the engine intake valves. 4B•2 Bosch K and KE fuel injection systems General information The fuel system comprises a centrally mounted fuel tank, electrically-operated fuel pump and Bosch K-Jetronic or KE-Jetronic continuous injection system according to model. This will let me know if the fuel distributor and warm up regulator are setup correctly. The electrical supply to all of these components is controlled by the control relay which itself is switched by the ignition-start switch. At the start of the decade, you could find the Bosch D-Jetronic on many Volvos and VWs. Cables on fuel pump can corrode or fuel pump can be worn. This common rail system ran at constant pressure and the injector pulse duration was changed according to intake vacuum, barometric pressure and engine temperature. It can be accessed from the front page of my website: The K-Jetronic. Therefore, a change in fuel consumption is achieved not by changing the duration of opening of the nozzles, and controlling the amount of fuel supplied to the Feb 20, 2017 · Also I have seen the Volvo B18 B20 Weber Conversion w/Manifold kits will they bolt on to my head ?? I am fed up with this K-Jetronic Fuel System. The system is used in conjunction with a turbocharger on RS Turbo models. This document provides detailed information on the K-Jetronic fuel injection system, including the operation of various components like the warm-up regulator and auxiliary air valve. 10 Engine wiring harness 8. 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. Gasoline Fuel-Injection System KE-Jetronic 1 987 722 101. The "K" in K-Jetronic stands for kontinuierlich, Sep 14, 2004 · A. Inside is a diaphram with a spring acting against it. The fuel is injected by solenoid-operated fuel-injection valves into the cylinder intake ports. 13. The M-B fuel injection system you’re most likely to find in System Pressure. Both debuted in 1973. S. The basic “ingredients” of a well running K-Jet system are fuel, air, and light. The D-Jetronic system measures incoming airflow by monitoring intake manifold pressure. Dit systeem is de vernieuwde versie van het K-jetronic systeem met een elektronische regel module. WARNING: This tape suffered significa Oct 28, 2022 · Here is a block diagram showing the components of D-Jetronic (V8 shown). At 3 Bar this pump even stops supplying to engine. 8 litre 16 valve engine and a K-Jetronic continuous injection system. with K-Jetronic for 8 of them. 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. emissions v/ SYSTEM. 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. When installed, the gauge will look like an upside down “T”. Clearly written and illustrated with The VW Golf and Jetta are vehicles equipped with a 1. The fuel system of the E21 To get started, a very basic description of the system. Aug 11, 2014 · Gasoline Fuel-Injection System K-Jetronic 1 987 722 159. 0 L-Jetronic Fuel Injection Theory of Operation 3. Dec 23, 2023 · It essentially boils down to D-Jetronic being a common-rail electronic fuel injection system, while K- and KE-Jetronic are electromechanical. i. It is quite straightforward in its operation, providing diagnosis and testing is acrried out logically and one step at a time. The system I'll be talking about is K-Jetronic, and came in the early water-cooled Volkswagens and Audis, from the late 70s to early 90s. The valve opens & closes at a variable rate; this process is called duty cycle. This development was 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. On the Bosch K-jet systems, this pressure can be measured at the top of the fuel distributor by connecting a continuous injection system pressure gauge from the top fitting in the fuel distributor (this is the horizontal one) to the warm-up regulator. Apr 25, 2004 · continous injection systems like youre k-jet are known as cis for the reason that they continously inject fuel into the engine. It optimizes the air-fuel mixture to achieve the desired […] supply system, there is always cool fuel Fig. Jul 29, 2020 · We will perform a basic fuel distributor/injector fuel flow check once the engine is in the car. 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 Jun 4, 2021 · 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. Before trouble-shooting, testing or 2. This video cassette is a product showcase of new 'L-Jetronic' fuel injection by Bosch, used on Fiat and Lancia vehicles. "An Electronic Fuel Injection System for Automobiles", Von Gunther Baumann, Bosch Technical Journal, 1967. The injectors are constantly sprayed the fuel into the intake manifold to the intake valves. Before trouble-shooting, testing or adjusting the K-Jetronic fuel injection system, the ignition sys-tem and the mechanical system of the operation of the Bosch K Jetronic system. US 308QV came in two different configurations: Feb 18, 2021 · For some time I have wondered how to check Fuel Pressure on my 560SL. The K-Jetronic is a mechanical fuel injection system from Bosch. 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. Nov 19, 2019 · Two types of fuel injection system are fitted. I have since moved on from working at a Ford main dealer to a Volkswagen Audi dealer in Jan 6, 2025 · The Elbe EFI kit ensures better ignition performance, more efficient operation, a notable increase in fuel economy, and more precise metering. Can test with magnet on a stick. K stands for the German word continuous. I'll apologise now for the fuzzy images. ii. D-Jetronic References Two papers were published in the Bosch Technical Journal that gave overall descriptions of the D-Jetronic system, components, and operation. 5BAR. Ask me about this fuel injection system's components, operation, and troubleshooting. The injected fuel mass is not determined by the fuel injector but rather pre-specified by the fuel distributor. 19 KE-Jetronic fuel-injection system layout and components 1 Injector 2 Cold start valve 3 Throttle plate 4 Sensor plate 5 Fuel distributor 6 Electro-magnetic pressure actuator 7 Thermo-time switch 8 Temperature 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 K-Jetronic System overview 13 Fuel supply 14 Fuel metering 18 Adapting to operating conditions 24 Supplementary functions 30 Exhaust-gas treatment 32 Electrical circuitry 36 Workshop testing techniques 38 K-Jetronic Since its introduction, the K-Jetronic gasoline-injection system has pro-ved itself in millions of vehicles. The main difference between the two types is that on the 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. Control Pressure Regulator Location: Mounted to the front of the engine K-Jetronic, a mechanically-operated injection system, is called. Proper sealing of the halves and adjustment of components 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. 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 manual describes the components and operation of the K-Jetronic fuel injection system in detail. 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 K-Jetronic system operates without a drive and injects the fuel continuously. Thanks to the K-Jetronic Since its introduction, the K-Jetronic gasoline-injection system has pro-ved itself in millions of vehicles. 0 System Diagrams and Reference Tables 8. Its first job is to help smooth out any pulses in the flow of the fuel, this is achieved by passing the fuel through a series of baffles and into a chamber giving it slight capacitance and a much smother flow. A thorough u nderstanding of the v arious compo-nents is required before w orking on K-Jetronic fuel systems . the injectors never turn on or off like a conventional system. The most successful and widely used mechanical fuel injection system uses an electrically driven pump as opposed to the systems requiring an engine driven pump. D-Jetronic did not have oxygen sensors or close-loop operation. NOTE: Due to the pressures involved, all fuel hoses must be rated for fuel injection. 7 and 2. If that is the case, your ECU is okay and you should check fuel pump relais, cabling and the fuel pump itself. The manual explains the fuel tank, pump, accumulator, filter, and other key parts with diagrams. g in BMW, Porsche, Opel, Volkswagen). Jan 9, 2024 · 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, timely 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. The document aims to explain how the K Jetronic system works and provide guidance on diagnosing and repairing issues. General information The fuel system comprises a centrally mounted fuel tank, electrically-operated fuel pump and Bosch K-Jetronic or KE-Jetronic continuous injection system according to model. requirements precisely. 0 Component Location 7. 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. A fuel injection system "K-Jetronic" is a mechanical system for continuous injection of fuel. ru. An Fig. Label the following components on the K – JETRONIC diagram. 4 Verify fuel pipes and fuel pressure in fuel hose. First, the fuel pump is run for 1. 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. Even K-Jetronic did not manage to Jul 1, 2012 · Verifying that the fuel accumulators are holding system pressure was part of that preliminary work. A fuel system similar to K, KE-Jetronic in fuel pressure and direct injector flow, but a fully electronically controlled system with the differences of INJECTORS prolonging into the combustion chamber exactly like the diesel solenoid injection system. 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. Both systems were further developed. n All injectors are wired together and fire simultaneously, @misc{etde_6585935, title = {KE-Jetronic - an electronically controlled fuel injection system with limp-home capability} author = {Maisch, W} abstractNote = {The Bosch-KE-Jetronic is a fuel-injection system for spark-ignition engines, which provides an optimal combination of mechanically executed basic functions with electronic control of additional functions. This development was K-Jetronic to Megasquirt II Conversion . List three main functional areas of the K – JETRONIC. 2 Brandstofpomp De brandstofpomp dient om het systeem te voorzien van de […] K-Jetronic Since its introduction, the K-Jetronic gasoline-injection system has pro-ved itself in millions of vehicles. Reassembly is described, including replacing seals and ensuring proper alignment. It begins by listing the necessary tools. the basic engine operation to . Supplies fuel using an electric pump that sends fuel to a dispenser-distributor, providing fuel to the injectors. D-Jetronic found its successor in L-Jetronic e. Model 107 Maintenance Manual Index 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. This system uses continuous spraying behind the intake valve to adjust the airflow. To be able to supply both kinds of technology, the successor systems developed by Bosch included K-Jetronic, a mechanical counterpart to the electronic L-Jetronic. understand the control . The K-Jetronic system is a continuous injection type that supplies fuel to each cylinder under all operating conditions. 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 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 means that the fuel is continuously injected into the inlet manifold. youre cis does indeed recirculate fuel back to the tank, but do does most other fuel injection mercedessource Product - Factory training manual procedure followed step-by-step. 5. This system performs three main functions: Measures the volume of air drawn into the engine through a special flow meter. The document provides step-by-step instructions for rebuilding a cast iron K-Jetronic fuel distributor. The amount of air sucked in by the engine is controlled by a throttle valve and measured by an air-flow sensor. This is basically the K-Jetronic fuel injection system. Both utilize constant system pressurization; however, both utilize different methods to control their fuel injection quantity and flow metering. The mixture formation system produces an air/fuel mixture (based on gasoline or a gaseous fuel), which is then drawn into the engine by the suction generated as the pistons descend. It details the components and functions of the K Jetronic system, including the fuel distributor, fuel pump, pressure regulator, and injectors. 1 Why do modern K-Jetronic fuel pumps not fit? D-Jetronic fuel pumps were dimensioned to supply 650 to 850 cm³ in 30 seconds at a pressure of 2 bar. manual describes the components and operation of the K-Jetronic fuel injection system in detail. Jan 19, 2023 · Presumably they isolate the rest of the system from pressure pulses from the frequency valve 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 L-Jetronic System - Fuel Injectors n Open when energized by ECU - not continuous as K -Jetronic. 0 Troubleshooting the Porsche 912E Fuel Injection System 6. 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 Intake manifold, 8 Cold-start valve, 9 Fuel distributor, 10 Air-flow sensor, 11 Timing valve, 12 Lambda sensor Feb 6, 2014 · 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. K – JETRONIC. Show related prompts How does the Bosch K-Jetronic system work? What are the main components of the Bosch K-Jetronic system? manual describes the components and operation of the K-Jetronic fuel injection system in detail. Feb 3, 2020 · The fuel pump pushes fuel through the accumulator and filter to the metering head. The K Jetronic is a full mechanical injection system with continuous injection (CIS). fuel filter the back of the fuel distributor. Spark Plugs 1 987 722 155. Fuel supply Mar 24, 2016 · The L-Jetronic is an electronically controlled fuel injection system which has the advantage of direct air flow sensing. Pulsation Damper: As the fuel Injectors rapidly open and close in time with the engines OTTO cycle, pressure fluctuations appear in the fuel system. K-Jetronic has a much higher system pressure Feb 12, 2024 · MECHANICAL MULTI – POINT SYSTEM. What distinguish the basic K-Jet injection system from the KE-Jet are the electrohydraulic actuator (EHA) and the subsystems and components involved in making it work. After studying this module, the student will be able to correctly in writing and without references:- 1. The fuel pressure regulator is part of the fuel distributor. I have also rebuilt the Fuel Distributor . 0 Operating Conditions 5. 1 Components overview. A thorough understanding of the various compo-nents is required before working on K-Jetronic fuel systems. Plus a forum where Dr-DJet and other experts help with competent advice and repair instructions. iii. The system measures and analysis the air flow and takes into account all changes in the engine’s operation to reduce the toxicity of the exhaust gases by the operation. Fuel lines in the engine bay (to follow shortly) A. Most of the fuel continues on into the metering head, but the excess is returned to the tank. The first job it has is to smooth out fuel pulses. For our purposes, we are talking about the 1980 450SL, and the 1981 thru 1985 380SL. 5 seconds after the key is turned to the "on" position and the ECU is powered-up. 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 K-Jetronic Since its introduction, the K-Jetronic gasoline-injection system has pro-ved itself in millions of vehicles. The name K is taken from the German word “Kontinuerlich” meaning continuous. I have recently secured these documents Feb 24, 2024 · Summary. Before trouble-shooting, testing or adjusting the K-Jetronic fuel injection system, the ignition sys-tem and the mechanical system of the Het KE-jetronic systeem behoort eveneens onder de groep van CIS-injectiesysteem wat staat voor continuous injection system. ATTENTION. However, it requires clean fuel and pressures set to the correct specifications. But those darned KE-systems don't seem to play by the old rules do they? The fuel distributor is K-Jetronic Since its introduction, the K-Jetronic gasoline-injection system has pro-ved itself in millions of vehicles. It injects intermittently into the intake ports. OBJECTIVES. In the years that followed, this led to something of an inter-departmental tug of war, with considerably more mechanical systems being sold at first. I would like to provide my view on this in an effort to help as much as I can. Your engine will start to smell fuel and these hoses get a litlle wet. For those of you with older cars, I have just finished my dumbed down idiots guide to the workings of the famed Bosch K-Jetronic mechanical fuel injection system. f he K-Jetroniesystem is a mechanically and hydraulically controlled fuel injeciion system that requires no form of drive. The fuel pressure regulator ensures that the system maintains the proper amount of pressurization. "Electronic Fuel K-Jetronic Since its introduction, the K-Jetronic gasoline-injection system has pro-ved itself in millions of vehicles. Gasoline Fuel-Injection System L-Jetronic 1 987 722 160. Replacing fuel hoses (tank, pump), based on K-Jet version 318i-320i-323i C. It trys to fire up but acts like it is starving for fuel, When and if I get it started it runs fantastic. While other 8-12MM metric banjo bolts are available, their core application is for hydraulic systems. This fuel acts against the main regulator, which pushes the System Pressure to 5. M-Motronic Engine Management 1 987 722 161 Sep 15, 2012 · 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. Using the Lambda sensor together with additional equipment for the Lambda closed-loop control facility, the K-Jetronic can already comply today with the exhaust-gas regulations of tomorrow. 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 Intake manifold, 8 Cold-start valve, 9 Fuel distributor, 10 Air-flow sensor, 11 Timing valve, 12 Lambda sensor This document provides technical instruction for the Bosch K Jetronic fuel injection system used in automobiles. The basic principle of operation is that the accelerator pedal controls the movement of the K-Jetronic System overview 13 Fuel supply 14 Fuel metering 18 Adapting to operating conditions 24 Supplementary functions 30 Exhaust-gas treatment 32 Electrical circuitry 36 Workshop testing techniques 38 K-Jetronic Since its introduction, the K-Jetronic gasoline-injection system has pro-ved itself in millions of vehicles. This creates the risk of fire and you should act immediately. The system uses these components to continuously inject fine atomized fuel into Mar 31, 2020 · 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. Jaguar V12 engine featuring a Jetronic system Image Source: autowp. 8. On Ebay there is one for sale for approximately $100. K-Jetronic is different from pulsed injection systems in that the fuel flows continuously from all injectors, while the fuel pump pressurises the fuel up to approximately 5 bar (73. The system replaces the distributor in favor of electronic ignition and, with the ECU included, is applicable for any M116 / M117 V8 K/KE Jetronic engines. 2 Mondial/328 factory manual #539/89) that may be where I copied the values from. Gasoline 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 May 3, 2015 · 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 K-Jetronic Since its introduction, the K-Jetronic gasoline-injection system has pro-ved itself in millions of vehicles. Bosch K-Jetronic A simplified idiots guide (as written by one) to the operation of the Bosch K-Jet mechanical fuel injection system. 0L motors. 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 KE-Jetronic Fuel Injection and the EHA. n Current through windings causes magnetism pulling armature and attached needle valve up and way from valve seat allowing fuel to flow. The igntion system is still controlled by a conventional distributor. You will be surprised by what Kent found on this 560SL engine. ) CIS, or continuous injection system, is a method of fuel injection which is very different from modern cars. You can find a good description of the operation in the service manual. When pressure increases due to a blocking fuel hose or regulator, this supply falls drastically. Fuel is continuously D-Jetronic (L-Jetronic, K-Jetronic, etc. Jul 4, 2020 · DESCRIPTION The Bosch Continuous Injection System, Fig. Of course, there’s also the question of ecology. closed loop control K Jetronic Robert Bosch (firm),Ulrich Adler,Bosch,1985 Mechanical Gasoline Fuel-injection System with Lambda Closed-loop Control, K-jetronic ,1981 Injection Technologies and Mixture Formation Strategies For Spark Ignition and Dual-Fuel Engines Alessandro Ferrari,Pietro Pizzo,2022-06-24 Fuel injection systems Mercedes followed in 1975. Dit betekend dus dat de brandstof continu wordt ingespoten in de inlaatcollector. The fuel system of the E21 B. The document provides an overview of the Bosch K Jetronic mechanical fuel injection system used on internal combustion engines. This system allowed the injectors to remain continuously open whenever the engine was 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. Reade more in chapter injectors how to solve this. The first production electronic fuel injection system was the Bendix Electrojector, offered briefly by Chrysler for 1958. components of an 8-cylinder. 1. 4. The fuel is supplied by an electrically driven fuel pump which develops the pressure necessary for injection. Fuel Accumulator The VW Golf and Jetta are vehicles equipped with a 1. Dec 12, 2014 · The air stream controls fuel volume. This system is known as the Bosch K-Jetronic System. This is a classic . K-Jetronic measures air sucked in by the engine by means of a flow sensor. . Clearly written and illustrated with The D-Jetronic system uses constant fuel pressure and flow, so that only injection duration needs to be modified to control air/fuel mixture. Jul 19, 2023 · DeLorean Industries has engineered and produced stainless steel banjo bolts for the factory Bosch K-Jetronic fuel 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 Mechanical fuel injection, 'K' stands for German: "Kontinuierlich", meaning continuous. Jan 13, 2008 · Hi Mr. The task of a fuel injection system is to supply precise amount of fuel to the combustion chamber at that particular moment. The fuel is pumped by an electrically-driven roller cell f uel pump. 0 Bibliography This is basically the K-Jetronic fuel 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 meeting U. It is designed for automotive professionals and enthusiasts seeking a deeper understanding of Bosch's mechanically controlled fuel injection technology. 0 Introduction to L-Jetronic Fuel Injection 2. I didn't draw them like that, it has happened during conversion to the required file format. Other than on K-Jetronic, fuel pump relais normally is not a common source of failure. electric fuel pump. Sep 18, 2018 · FUEL SYSTEM. Manufacturers achieved better efficiency, lower fuel consumption and a more reliable combustion. After Nov 10, 2024 · 4B•4 Bosch K and KE fuel injection systems 1. 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. 3: CIS-E Fuel Injection Layout (420 & 560) OPERATION Fuel injection system K-Jetronic Naturally aspirated engines are fitted with the Bosch K-Jetronic continuous fuel injection system. This article covers K-Jetronic injection for E21 models, also injected E12 and early E28 5er. Before trouble-shooting, testing or adjusting the K-Jetronic fuel injection system, the ignition sys-tem and the mechanical system of the Bosch K-Jetronic and KE-Jetronic are mechanical fuel injection systems for XR3i and XR3i Cabriolet models up to 1990 and RS Turbo models. This article covers L-Jetronic injection for E30 models, also later injected E28 and early E34 5er For K-Jetronic in E21 models, also injected E12 and early E28 5er, see THIS ARTICLE. Commonly called 'Continuous Injection System (CIS) in the USA. A more detailed description of the technical instruction booklet Fuel 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. Fuel pressure is readily measured by inserting a gauge between the fuel rail and the Cold Start Injector. Before trouble-shooting, testing or adjusting the K-Jetronic fuel injection system, the ignition sys-tem and the mechanical system of the engine Jun 11, 2009 · 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. Nov 18, 2019 · 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. 2. The K-Jetronic is a mechanical fuel injection system which injects continuously and which needs no form of drive whatsoever. Today’s standard spark-ignition engines employ manifold injection for mixture formation outside the combustion chamber. It describes the key components of the system including the fuel tank, high pressure fuel pump, fuel pump relay, accumulator, fuel filter, primary pressure regulator, and airflow sensor. Before trouble-shooting, testing or adjusting the K-Jetronic fuel injection system, the ignition sys-tem and the mechanical system of the May 3, 2015 · 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 K-Jetronic Since its introduction, the K-Jetronic gasoline-injection system has pro-ved itself in millions of vehicles. The accumulator has an important role in the operation of the K Jetronic system. sort of like a carby does. 2. Ran across this exceptional YouTube video by Pierre Hedary on how to do this. The ECU supplies ground to the FPR to run the fuel pump under three conditions. The pulse generator is located in the bottom of the distributor and tells the ECU how fast the engine is turning by closing Oct 26, 2014 · The K-Jetronic WITH LAMBDA system is used on a number of vehicles from Porsche, Volvo, to VW, and of course Mercedes. KE-Jetronic v/ KEY COMPONENTS: Fuel Distributor Differential Pressure Regulator OBJECTIVE: betWeenmi11iamp readings at DPR and effects on fuel mixture KE-Jetronic Fuel Injection PART ONE You've worked on K and K-Lambda fuel systems for years. It is divided into three main functional areas: Air-flow measurement ; Fuel supply ; Fuel induction ; Air-flow measurement. (Audi 80, VW Rabbit, Scirocco, etc. This 6 page procedure is designed to guide you through setting a baseline fuel tune on your early 928 with Bosch K-Jetronic CIS. The familiar yellow Technical Instruction series from Bosch have long proved one of their most popular instructional aids. Dec 22, 2024 · The K-Jetronic system from Bosch provides a variable fuel flow, mechanically driven in continuous mode. The KE2-Jetronic system is based upon the Jul 19, 2021 · Back when Jetronic was first appearing in serial production cars, the benefits were obvious right from the start. The Engine Control Unit (ECU) is the brains of the system, taking information from the inputs and controlling the outputs. The system consists of four basic sections: 1) The K-Jetronic mechanical fuel injection system (similar to that used on the 1977, 78m and 79 450SL) Hello! I have reviewed the Bosch K-Jetronic manual. In the mid-1970s, Bosch MgbH introduced a fuel injection system called K -Jetronic. Especially the few cm of fuel hoses crimped on injectors like to leak fuel over time. 0 L-Jetronic Component Identification 4. The system is completely mechanical. Show related prompts How does the Bosch K-Jetronic system work? What are the main components of the Bosch K-Jetronic system? Nov 21, 2009 · supply system, there is always cool fuel Fig. 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 . This pressurizes the fuel system in preparation for starting, but prevents the fuel pump from continuing to pump if the key is left in this position. This manual provides instructions on how to inspect, remove, and refit components of the fuel and exhaust systems, including the fuel filter and air cleaner, as well as details on testing and adjusting the systems. Also, use only FI-type clamps -- regular hose clamps Fuel injection system The KE2-Jetronic fuel injection system is fitted to turbocharged engines. When open they spray a fine atomised mist of fuel behind the inlet valve, which simply waits there until it is drawn in on I have done a rough translation of the Scholl article that is in text file format. 6. Thanks to the Scheme of operation of the K-Jetronic injection system in load and idle modes: 1 - fuel pump; 2 - fuel dispenser; 3 - fuel storage tank; 4 - fuel filter; 5 - dosing chamber; 6 - differential pressure diaphragm valve; 7 - fuel supply pipe to the injection nozzle; 8 - distribution plunger; 9 - injection nozzle; 10 - air flow meter pressure disk requiring more fuel, adjusting the regulator for higher fuel pressure is the principle way to get it. 16 K-Jetronic system speed sensing module and fuel pump safety module locations 1. K-Jetronic has a much higher system pressure Aug 19, 2016 · In the 1970s, fuel injection systems were analog. The mechanical fuel injection system has recently been overshadowed by K-Jetronic Since its introduction, the K-Jetronic gasoline-injection system has pro-ved itself in millions of vehicles. Engine speed, temperature, and other factors are monitored for the purpose of fine-tuning injection duration. D-Jetronic system is composed of following components: Damper (1, not on all cars), fuel pump with pressure relief valve (2), fuel filter (3), fuel line (4), electrically operated injectors (5), pressure adjuster (6), damper (7, not an all cars), trigger contacts (8, in distributor), motor cabling, engine control unit (9, ECU), manifold manual describes the components and operation of the K-Jetronic fuel injection system in detail. 5 psi). here is a checklist to help you acheive this. If pressure drops below the opening limit, they close. 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 K-jetronic system belongs to the group of CIS injection system which stands for continuous injection system. K-Jetronic Since its introduction, the K-Jetronic gasoline-injection system has pro-ved itself in millions of vehicles. K-jetronic can produce the proper mixture depending on the operating conditions of your engine. All bolts are not created equal, especially when fluid transfer is in play. In 1978 L-Jetronic was the first system with lambda controlled closed loop control. (2) Fuel Accumulator: The accumulator is the first of the components in the fuel system after the pump. D-Jetronic system is composed of following components: Damper (1, not on all cars), fuel pump with pressure relief valve (2), fuel filter (3), fuel line (4), electrically operated injectors (5), pressure adjuster (6), damper (7, not an all cars), trigger contacts (8, in distributor), motor cabling, engine control unit (9, ECU), manifold K-Jetronic Since its introduction, the K-Jetronic gasoline-injection system has pro-ved itself in millions of vehicles. Thanks for any advice. gvv eefrc ezvypgp ftdkgmu zmhgpjbu ynox rdcyte cmbhodj hzxj xbrhhqp