Certain operating conditions make it necessary to correct the mixture accordingly. 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. K jetronic since its introduction, the k jetronic gasoline injection system has proved itself in millions of vehicles. Vw l jetronic fuel injection workshop manual created date. Media in category k jetronic the following files are in this category, out of total. 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.
The 190e utilizes an electronically controlled version of the k jetronic injection system called ke jetronic cise. This manual will describe the kjetronics function and its particu lar. Petrol gasoline fuelinjection system kjetronic manual. Kjetronic porsche always use new gaskets, seals and 0rings when installing. All books are in clear copy here, and all files are secure so dont worry about it. Supplied in a clear pouch with all adapters, adapter application chart, hookup and parts schematic drawing and complete instructions. Bosch k jetronic fuel injection manual pdf document. 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. Jan 25, 2012 cis fuel injection operation by bob tucker. Kjetronic fuel injection pressure tester parts breakdown ver. Gasoline fuelinjection system kjetronic technical instruction. This synthesis, comprising the mechanical basic functions coupled with electronic adap tation and opti mization functions, is the kejetronic.
Kjetronic fuel injection system, the ignition system and the mechanical system of the engine compression, valve timing, etc. Approximately up until 1994 mechanical fuel injection systems have been installed on certain mercedes, audi, volkswagen, ford etc. Disconnect the bosch connector from your air valve sensor. Bosch kejetronic system description fuel injection engines. 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. This system is a further development of the mechanically controlled cis system. Gasoline fuel injection system ljetronic bosch pdf. The primary pressure regulator that is installed in the fuel distributor housing maintains a constant pressure in the fuel system of the k jetronic. Bendix developed the basic idea of using an inductive element coupled to manifold vacuum as a. There is no scan tool to tell you where to look for the fault. The pump is capable of producing a pressure of 8 bar 120 psi with a. Digital data processing and microprocessors make it possible to translate extensive operating information. Electrical and vacuum operated regulators and switches complete the assembly. Djetronic history and fundamentals history the djetronic system developed by bosch in the early 1960s was the first massproduction electronic fuel injection system.
This system, when compared with conventional carburettor arrangements, achieves a more accurate control of the airfuel mixture resulting in reduced emission levels and improved performance. Disconnect the electrical bosch connector on top of the warm up regulator. This inline pressure tester indicates problem sources control pressure regulator, fuel distributors or other specific fuel injection components that may require replacing. Ke3 jetronic pdf mercedes suggests that special tools are required to adjust the mixture on the bosch ke3 jetronic.
What links here related changes upload file special pages permanent link page. Other than on k jetronic, fuel pump relais normally is not a common source of failure. 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. Lets start by looking at how simple fuel injection is fuel fundamentals v p x t x a v volume of fuel through the injector p fuel pressure behind the injector t time the injector is open a area of the injector orifice cis kjetronic dme motronic afc ljetronic mpi djetronic. It should be more like a fine spray and less like a fountain. The combination of the two systems makes it possible to obtain both economy and performance, while minimizing exhaust emissions. Read online bosch k jetronic service guide book pdf free download link book now.
The bosch k jetronic fuel injection system is a continuous fuel injection system which consists of mechanical type fuel injectors, a fuel distributor unit, operated by a sensor plate, and a control valve. Cables on fuel pump can corrode or fuel pump can be worn. 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. 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. Mechanical fuel injection bosch k jetronic, bosch k jetronic fig. Kjetronic since its introduction, the kjetronic combustion in the gasoline engine gasolineinjection system has pro the sparkignition or ved itself in millions of vehicles. The lambda system is a feedback control capable of measuring airfuel ratios and constantly correcting them. Bosch k jetronic fuel workshop service repair manual. Gasoline fuelinjection system kjetronic gasolineengine management technical instruction published by. It was primarily based on patents that bosch licensed from the bendix corporation.
This manual will describe the kjetronics function and its particu lar features. Bosch djetronic fuel injection manual pon27pypo040 idocpub. Bosch kjetronic fuel injection part 1 volvo owners club. Jetronic is a trade name of a fuel injection technology for automotive petrol engines, developed. Kjetronic is a mechanically and hydraulically operated fuel injection pump, introduced by bosch gmbh in the year 1973. Nov 21, 2009 today, it has been superseded by gasoline injection systems which thanks to electronics have been vastly im proved and expanded in their func tions. 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. This success is a result of the advantages which fuel injection can offer when considering todays demands for economy, performance, and cleaner exhausts. Vw l jetronic fuel injection workshop manual author.
Bosch injection k jetronic manual 11 pdf drive search and download pdf files for free. Gasoline injection systems, mechanical injection systems and electronic systems in particular, are the k jetronic system operates by better at maintaining airfuel mixtures injecting continually, without an exter within precisely. Robert bosch gmbh, 2000 postfach 3002 20, d70442 stuttgart. Cheek that the ignition timing is 7 k 1 btdc using a stroboscope directed on the timing marks on the. Digital data processing and microprocessors make it possible to translate extensive operating. Jetronic controls fuel supply while the electronic ignition system provides optimal ignition control. These fuel injection systems were considered to be really reliable and trustworthy. This site is like a library, you could find million book here by using search box in the header. Mechanical gasoline fuelinjection system with lambda closed.
Since this point, the kjetronic has now become particularly impor tant with regard to maintenance and repair. Inhibit the operation of the fuel injection system during this test by removing the fuel injection fuse. Mmotronic engine management modern electronics are opening up new perspectives in automotive. Fuel injection fundamentals porsche club of america. The essential difference between the two is mixture correction by means of electronically controlled correction functions cise. Download the book into available format new update. Bosch injection k jetronic manual books bosch injection k jetronic manual right here, we have countless books bosch injection k jetronic manual and collections to check out. Apr 02, 2010 porsche 924 k jetronic injection system test. Download bosch k jetronic service guide book pdf free download link or read online here in pdf. 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. Continuous injection system found on european cars and volkswagen models assembled in the u. Boschinjectionkjetronicmanual 11 pdf drive search and download pdf files for free. 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. The d jetronic system developed by bosch in the early 1960s was the first massproduction electronic fuel injection system.
Since their introduction, the jetronic fuel injection systems have proved themselves millions of times over under the harsh conditions of everyday driving. 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. This synthesis, comprising the mechanical basic functions coupled with electronic adaptation and optimization functions is the. If that is the case, your ecu is okay and you should check fuel pump relais, cabling and the fuel pump itself. Mechanical fuel injection bosch kjetronic, bosch k jetronic the fuel pump this type of high pressure fuel pump is denoted as a roller cell pump, with the fuel entering the pump and being compressed by rotating cells that force it through the pump at high pressure. A computer controls the injection and ignition systems with reference to shared optimization criteria.
Verify that these systems are in proper working order before proceeding further. Originally, volkswagen adapted the l jetronic for the type 4 air cooled 411 engines sold in the united states due to more stringent emissions and fuel consumption regulations. 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. Gasoline fuel injection system l jetronic bosch pdf download this manual may contain attachments and optional equipment that are not available in your. The following table is a guide to the fuel paths marked by each blue arrow in figure 6. Bosch k jetronic fuel injection shop manual file format. Read online workshop manual porsche kjetronic book pdf free download link book now. Troubleshooting guide for kjetronic fuel injection. Using the k jet fuel pressure test kit notes from experience with 1979 volvo 244dl and a 1983 volvo 244ti turbo.
K jetronic friends of pdf all our visitors are our friends. Bosch kjetronic continuous injection system mechanical fuel injection overview 15. Fuel injection pumps bosch service repair workshop manuals. Bosch kejetronic system description free download as pdf file. Anyhow here is the link bosch k jetronic fuel injection manual. Bosch ke jetronic system the bosch ke jetronic fuel injection 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 used in a wide variety of vehicles around the world. K jet mechanical fuel injection depends on continuous regulation and variation of fuel pressure delivered to the injectors. The ferrari workshop manual info on the earlier cis is mostly inapplicable. Workshop manual porsche kjetronic pdf book manual free. 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. Testing and setting a bosch k jetronic warmup regulator, porsche 928.
Gasoline fuel injection system mono jetronic pdf995 bitbin. Bosch kjetronic overview mercedesbenz forum benzworld. Combustion in the gasoline engine the sparkignition or ottocycle engine gasolineengine management technical requirements cylinder charge mixture formation gasoline injection systems overview k jetronic system overview fuel supply fuel metering adapting to operating conditions supplementary functions exhaustgas treatment electrical circuitry workshop. Bosch le jetronic bmw copyright equiptech 1 page 1 ft. Vw ljetronic fuel injection workshop manual pdf yumpu. You can open them as pdf file or save them on your computer. The engines fuel requirements a sparkignition engine needs a particular airfuel ratio in order to operate.