Using the lambda sensor together with additional equipment for the lambda closedloop control facility, the k jetronic can already comply today with the exhaustgas regulations of tomorrow. The bosch continuous injection system cis is a hydraulictype fuel injection system which uses an air flow sensor, that is mechanically connected to a hydraulic valve, to control injection quantity. Continuous injection system found on european cars and volkswagen models assembled in the u. The principle of the k jetronic continuous injection system is very simple and there are no specialised electronic components. While new carburated engines were used in the european markets, vw adapted the l jetronic for the type 4 in the us due to more stringent emissions and fuel consumption regulations. 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. The following table is a guide to the fuel paths marked by each blue arrow in figure 6. 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. Today, it has been superseded by gasoline injection systems which thanks to electronics have been vastly im proved and expanded in their func tions. Telechargez comme pdf, txt ou lisez en ligne sur scribd.
Bosch k jetronic fuel injection manual pdf document. A friend of mine loaned me under penalty of death if i lose it a cis bosch i jetronic fuel. Before troubleshooting, testing or adjusting the k jetronic fuel injection system, the ignition system and the mechanical system of the engine compression, valve timing, etc. The k jetronic was used as original equipment in massproduced vehicles between 1973 and 1995. Ive been having this problem whereby upon acceleration especially from stop my 420sel stutters and stumbles, then catches and continuous accelerating just fine. Kjetronic fuel injection system k jetronic is a mechanically and hydraulically operated fuel injection pump, introduced by bosch gmbh in the year 1973. A 21year run on literally millions of cars tells us that the delorean was equipped with a worldclass fuel management system from the 70s and 80s, that is. Fonctionnement injection et systeme antipollution controle reglage. Gasoline fuelinjection system k jetronic pdf download. 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. K jet mechanical fuel injection depends on continuous regulation and variation of fuel pressure delivered to the injectors.
L jetronic system fuel injectors n open when energized by ecu not continuous as k jetronic. The bosch ke jetronic fuelinjection system is fitted to escort rs turbo models and is a further development of the k jetronic system. K jetronic is a mechanical fuel injection system developed by bosch in the 1970s and is. Fuel injection system the ke2 jetronic fuel injection system is fitted to turbocharged engines. Automotive equipment business sector, department for automotive services, technical publications khpdi2. Please consult your local distributor for those items you may require. 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 le jetronic l jetronic k jetronic k jetronic german k jetronic deutsch bosch manual bosch fsa 740 using manual bosch manual she bosch vp30 manual.
Fuel system k jetronic lambdathis page is dedicated to checking and, if need be, adjusting your k jetronic lambda fuel injection system. The filter is a large metal canister with different fittings at either end to avoid the unit. Line or system pressure readings will help define a problem with the fuel delivery system such as the pumps and filter. How to rebuild front brake caliper vw audi skoda seat new piston and seals complete guide duration.
Heres the k jet section from the wiki entry for jetronic, boschs brand name which covers several generations. Detach the operational relay set from the relay block as well as from the safety appliance located under the steering tube. A thorough understanding of the various components is required before working on k jetronic fuel systems. The bosch l jetronic fuel injection system used in the porsche 912e is often referred to as the air flow controlled or afc fuel injection system. Vw l jetronic fuel injection workshop manual created date. The k jetronic is a mechanical system in which the fuel is constantly metered on the basis of the volume of air drawn in by the engine. Reparation et entretien des systemes dinjection dessence. The primary pressure regulator that is installed in the fuel distributor housing maintains a. The lambda system is a feedback control capable of measuring airfuel ratios and. Using the k jet fuel pressure test kit notes from experience with 1979 volvo 244dl and a 1983 volvo 244ti turbo. Infact i used my same tester i bought years ago to work on my none 450sel 6. The k jetronic 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. If it is not, you will only cover up faults and get yourself into trouble. The main difference between the two types is that on the.
This synthesis, comprising the mechanical basic functions coupled with electronic adap tation and opti mization functions, is the ke jetronic. Ke jetronic cise fuel pressure testing is very similar to the old mechanical version. Classification des systemes dinjection a essence 9 1 historique. Since this point, the k jetronic has now become particularly impor tant with regard to maintenance and repair.
Books on the cis system generic and porsche specific these books are recommended reading for cis familiarization bosch pdf. Vw l jetronic fuel injection workshop manual author. Due to the extremely fine tolerances within the bosch k jetronic system, it is vital that the filter has excellent filtration properties without impeding the flow on the fuel. 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. In the mean time, lets strive to demystify what fi is, how vw does it, and how to keep our sciroccos running. Robert bosch gmbh, 2000 postfach 30 02 20, d70442 stuttgart. Originally, volkswagen adapted the l jetronic for the type 4 air cooled 411 engines sold in the united states due to more. Im going to toss some links on here as sourdough starter. Gasoline fuelinjection system kjetronic pdf download. Seaion 54, k moronic chapter f exhaust emission control system chaptw g fuel evaporative emission control system chapter u crankcase emission con. Materials and specifications are subject to change without notice. K jetronic system overview fuel supply 14 fuel metering 18 adapting to operating conditions 24 supplementary functions 30 exhaustgas treatment 32 electrical circuitry 36 workshop testing techniques 38 k jetronic since its introduction, the k jetronic gasolineinjection system has proved itself in millions of vehicles.
Deux autres systemes etaient disponibles sur le marche. Bosch licensed the concept to many automobile manufacturers. Before doing anything, lets discuss what cis, k jetronic, lambda, and duty cycle are so that you get a very basic understanding of how the system works and what it is youll be testing. With the k jetronic, the preparation is performed by the mixture control unit which consists of a fuel distributor and an airflow sensor.
There is an electrically driven fuel pump and electrical sensors and switches but these are no different from those in general use on vehicles see illustration. The mixture preparation system meters fuel to correspond with the amount of intake air. Bosch ke3 jetronic 539 89 injection system manual 328 mondial to read online or download as pdf. Gasolineengine management gasoline fuelinjection system k jetronic technical instruction. Diagnostics and spare parts from a single source product. Since then, the k jetronic has only been of relevance in. This manual may contain attachments and optional equipment that are not available in your area. K jetronic system overview the k jetronic is a mechanically and hydraulically controlled fuelinjection 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. Now let us have a look how bosch ke jetronic fuel injection system can be diagnosed and repaired on an example of audi 100 2. Home video course bosch ke3 jetronic 539 89 injection system manual 328 mondial read online available as pdf. Do not try to correct engine trouble by making simple adjustments to the idle speed or the idle mixture co. This manual will describe the k jetronic s function and its particu lar features. Mechanical fuel injection bosch k jetronic, bosch k jetronic fig. Better yet would be to research, edit and post up a completly refined web page link of my own, aint got one yet.
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