Kjetronic is a mechanically and hydraulically operated fuel injection pump, introduced by bosch gmbh in the year 1973. Kjetronic fuel injection system, the ignition system and the mechanical system of the engine compression, valve timing, etc. There is so much mystery surrounding the cis continuous injection system fuel system bosch has dubbed k jetronic, i wanted to try and make some sense of it for all porsche owners. Bosch, 39 pages qr code for benzineinspritzsystem k jetronic.
Kejetronic a new continuously injecting electronically. The combination of the two systems makes it possible to obtain both economy and performance, while minimizing exhaust emissions. This unit has an important role to fill in the operation of the bosch k jetronic system. Bosch k jetronic fuel injection shop manual file format. Gasoline fuel metering principle of the airflow sensor injection. Adjusting the control pressure regulator on the k jetronic injection system2. Bosch ke3 jetronic 539 89 injection system manual 328 mondial to read online or download as pdf. Bosch k jetronic fuel workshop service repair manual. The ferrari workshop manual info on the earlier cis is mostly inapplicable. It doesnt quite match the typical k jetronic diagram in the bosch k jetronic technical instruction book but it may be just a nomenclature difference.
Approximately up until 1994 mechanical fuel injection systems have been installed on certain mercedes, audi, volkswagen, ford etc. Anyhow here is the link bosch k jetronic fuel injection manual. The primary pressure regulator that is installed in the fuel distributor housing maintains a constant pressure in the fuel system of the k jetronic. This synthesis, comprising the mechanical basic functions coupled with electronic adaptation and optimization functions is the. The upper connection hose is attached to the fuel distributor. Since this point, the kjetronic has now become particularly important with regard to maintenance and repair. Bosch licensed the concept to many automobile manufacturers. The lambda system is a feedback control capable of measuring airfuel ratios and constantly correcting them. On the photos 1 and 24 you can see how a control pressure regulator cpr looks like. Gasoline fuel injection system ljetronic bosch pdf. Ke3 jetronic pdf mercedes suggests that special tools are required to adjust the mixture on the bosch ke3jetronic. Bosch superseded the d jetronic system with the k jetronic and l jetronic systems for 1974, though some cars such as the volvo 164 continued. However, widerange use of fuelinjection systems was only possible with lower cost designs.
Read online bosch k jetronic service guide book pdf free download link book now. Today, it has been superseded by gasoline injection systems which thanks to electronics have been vastly im proved and expanded in their func tions. Adjusting the control pressure regulator on the kjetronic. Flow testing a bosch cis kjetronic fuel injection system from a 1984 mercedes 380sl. This manual will describe the kjetronics function and its particu lar. Bosch k jetronic and ke jetronic fuel injection volvo owners club. Gasoline fuel injection system l jetronic bosch pdf download this manual may contain attachments and optional equipment that are not available in your. Bosch developed an electronic fuel injection system, called d jetronic d for druck, german for pressure, which was first used on the vw 1600tle in 1967. The bosch kjetronic fuelinjection system is of the continuous injection type and supplies a precisely controlled quantity of atomised fuel to each cylinder under all operating conditions. Mechanical gasoline fuelinjection system with lambda closed. All books are in clear copy here, and all files are secure so dont worry about it. The mechanical fuel injection system has recently been overshadowed by modern electronic injection, which enables the use of lambda closed.
Bosch ke jetronic manual bosch ke jetronic workshop manual bosch k jetronic manual mercedes bosch k jetronic service manual bosch d jetronic fuel injection manual manual k jetronic k jetronic l jetronic le jetronic k jetronic german k jetronic deutsch bosch fsa 740 using manual bosch manual she bosch. Media in category kjetronic the following files are in this category, out of total. This success is a result of the advantages which fuel injection can offer when considering todays demands for economy, performance, and cleaner exhausts. Bosch classic, remakes, kkejetronic fuel distributor. Bosch kjetronic and kejetronic mechanical fuel injection systems. Jetronic is a trade name of a fuel injection technology for automotive petrol engines, developed and marketed by robert bosch gmbh from the 1960s onwards.
Since its introduction, the kjetronic gasolineinjection system has. Mechanical fuel injection bosch kjetronic, bosch k jetronic. Bosch k jetronic fuel injection manual pdf document. I went ahead and registered so that i could download the doc as a pdf. Control kjetronicsince their introduction, the jetronic fuelinjection systems. Vw l jetronic fuel injection workshop manual author. Kjetronic cis fuel system diagram shown below is a schematic diagram of fuel lines in a kjetronic as a whole with noise damper and drain line at the fuel accumulator. However, widerange use of fuelinjection systems was only possible with lowercost designs. Troubleshooting guide for kjetronic fuel injection.
Gasoline fuelinjection system kjetronic technical instruction. Vw l jetronic fuel injection workshop manual created date. Since their introduction, the jetronic fuel injection systems have proved themselves millions of times over under the harsh conditions of everyday driving. Better yet would be to research, edit and post up a completly refined web page link of my own, aint got one yet. Fuel injection pumps bosch service repair workshop manuals. File type pdf bosch k jetronic fuel injection service repair manual bosch k jetronic fuel injection service repair manual bosch k jetronic cis explained bosch k jetronic fuel distributor quick look whilst ive got it out of the car i thought id give you a quick look at a. The accumulator is the first of the components in the fuel system after the pump. The fuel distribu tor allocates this fuel to the injection the k jetronic is a mechanically and valves of the individual cylinders. The greater the deflection of the airflow sensor plate, the greater the amount of injected fuel. Kjetronic is an amazing system, light years ahead of its time. Since this point, the k jetronic has now become particularly impor tant with regard to maintenance and repair. The kjetronic pump requires no form of drive and one of its features is that it can meter the fuel as a function of the intake air quantity. Since the electric fuel pump supplies more fuel that is used by the engine, a valve in the pressure regulator opens and returns this excess fuel to the fuel tank.
The bits of the system include the fuel pump, prepump on some models, fuel filter, accumulator, fuel distributor, warm. Today, it has been superseded by gasoline injection systems which thanks to electronics have been vastly improved and expanded in their functions. Disconnect the electrical bosch connector on top of the warm up regulator. 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. Altitude correction is also possible that reduces the injected amount of fuel at. Verify that these systems are in proper working order before proceeding further. Im going to toss some links on here as sourdough starter. This synthesis, comprising the mechanical basic functions coupled with electronic adap tation and opti mization functions, is the kejetronic. K jetronic friends of pdf all our visitors are our friends. There are several variations of the technology offering technological development and refinement. Flow testing a bosch cis kjetronic fuel injection system from a. Contents 1 d jetronic 2 k jetronic 3 k jetronic lambda jetronic is a trade name of an fuel injection technology for automotive petrol. In the mean time, lets strive to demystify what fi is, how vw does it, and how to keep our sciroccos running.
This manual will describe the k jetronics function and its particu lar features. Download bosch k jetronic service guide book pdf free download link or read online here in pdf. The cpr is a device used for the enrichment of mixture during the engine warmup phase. How to professionally tint a car door window 20 vw jetta for beginners duration.
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