Bosch licensed the concept to many automobile manufacturers. Using the k jet fuel pressure test kit notes from experience with 1979 volvo 244dl and a 1983 volvo 244ti turbo. Better yet would be to research, edit and post up a completly refined web page link of my own, aint got one yet. 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. Classification des systemes dinjection a essence 9 1 historique. This synthesis, comprising the mechanical basic functions coupled with electronic adap tation and opti mization functions, is the ke jetronic. 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. Gasoline fuelinjection system k jetronic pdf download. The primary pressure regulator that is installed in the fuel distributor housing maintains a. 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.
In the mean time, lets strive to demystify what fi is, how vw does it, and how to keep our sciroccos running. The mixture preparation system meters fuel to correspond with the amount of intake air. K jet mechanical fuel injection depends on continuous regulation and variation of fuel pressure delivered to the injectors. 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.
Telechargez comme pdf, txt ou lisez en ligne sur scribd. This synthesis, comprising the mechanical basic functions coupled with electronic adaptation and optimization functions is the. 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 principle of the k jetronic continuous injection system is very simple and there are no specialised electronic components. K jetronic is a mechanical fuel injection system developed by bosch in the 1970s and is.
Vw l jetronic fuel injection workshop manual author. 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. Kjetronic fuel injection system k jetronic is a mechanically and hydraulically operated fuel injection pump, introduced by bosch gmbh in the year 1973. Bosch k jetronic fuel injection manual pdf document. Continuous injection system found on european cars and volkswagen models assembled in the u. 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. Bosch ke3 jetronic 539 89 injection system manual 328 mondial to read online or download as pdf. This manual will describe the k jetronic s function and its particu lar features. Im going to toss some links on here as sourdough starter. Mechanical fuel injection bosch k jetronic, bosch k jetronic fig. 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. How to rebuild front brake caliper vw audi skoda seat new piston and seals complete guide duration.
Gasolineengine management gasoline fuelinjection system k jetronic technical instruction. The following table is a guide to the fuel paths marked by each blue arrow in figure 6. Infact i used my same tester i bought years ago to work on my none 450sel 6. L jetronic system fuel injectors n open when energized by ecu not continuous as k jetronic. 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. 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. The k jetronic was used as original equipment in massproduced vehicles between 1973 and 1995.
Please consult your local distributor for those items you may require. Today, it has been superseded by gasoline injection systems which thanks to electronics have been vastly im proved and expanded in their func tions. Diagnostics and spare parts from a single source product. Fuel system k jetronic lambdathis page is dedicated to checking and, if need be, adjusting your k jetronic lambda fuel injection system. 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 bosch ke jetronic fuelinjection system is fitted to escort rs turbo models and is a further development of the k jetronic system. Heres the k jet section from the wiki entry for jetronic, boschs brand name which covers several generations. Home video course bosch ke3 jetronic 539 89 injection system manual 328 mondial read online available as pdf. Fuel injection system the ke2 jetronic fuel injection system is fitted to turbocharged engines. Seaion 54, k moronic chapter f exhaust emission control system chaptw g fuel evaporative emission control system chapter u crankcase emission con.
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. 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. 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. 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. Ive been having this problem whereby upon acceleration especially from stop my 420sel stutters and stumbles, then catches and continuous accelerating just fine. 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. Gasoline fuelinjection system kjetronic pdf download.
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. Robert bosch gmbh, 2000 postfach 30 02 20, d70442 stuttgart. Materials and specifications are subject to change without notice. Since this point, the k jetronic has now become particularly impor tant with regard to maintenance and repair. Fonctionnement injection et systeme antipollution controle reglage. Automotive equipment business sector, department for automotive services, technical publications khpdi2.
Vw l jetronic fuel injection workshop manual created date. The lambda system is a feedback control capable of measuring airfuel ratios and. Reparation et entretien des systemes dinjection dessence. The main difference between the two types is that on the. Line or system pressure readings will help define a problem with the fuel delivery system such as the pumps and filter. 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. A friend of mine loaned me under penalty of death if i lose it a cis bosch i jetronic fuel. This manual may contain attachments and optional equipment that are not available in your area. Books on the cis system generic and porsche specific these books are recommended reading for cis familiarization bosch pdf. 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. 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.
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