Find great deals on ebay for k jetronic and bosch k jetronic. 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. Bosch kjetronic fuel injection part 1 volvo owners club. Ljetronic the bosch ljetronic also called afcair flow controlled fuel injection was put into usspec type 4s in the last model year 1974. This particularly cost to travel on the way to fuel injection for efficient singlepoint injection unit passenger cars. After a few days, you receive the repaired airflow sensor which is covered by the bosch exchange parts warranty. Gasoline fuelinjection system kejetronic bosch, robert on. The efaw 228 is nothing but a multimeter for measuring voltage or resistor plus a switch to activate your fuel pump permanently. Understanding djetronic fuel injection an overview of bosch djetronic in jaguar v12s 19751980 duration. Pmcedum 1 fuel pump andor prepurnp not operating correctly. Today, it has been superseded by gasoline injection systems which thanks to electronics have been vastly improved and expanded in their functions. Mar 02, 2012 understanding d jetronic fuel injection an overview of bosch d jetronic in jaguar v12s 19751980 duration.
R shoutd be noted that all components of the system except the injectors can be tested on the vehicle. The d jetronic system uses constant fuel pressure and flow, so that only injection duration needs to be modified to control airfuel mixture. Another excellent source of general info on the bosch injection system from the early d jetronic electronic to k jetronic mechanical constant injection all the way to the later variations of the motronic engine management with lambda exhaust sensing to allow the system to function closedloop, is the book. It was primarily based on patents that bosch licensed from the bendix corporation. The electric fuel pump is located underneath the rear floor panel. This is why engines equipped with the bosch motronic med 7 direct petrol injection system will be used for the first time in the lupo fsi and golf fsi.
Gasoline fuelinjection system ke jetronic bosch, robert on. Since this point, the k jetronic has now become particularly important with regard to. All mercedesbenz fuel injected engines are equipped with electric fuel pumps. Bosch technical instruction l jetronic pdf manufactured by the company bosch presented for you in electronic format page size 586 x 829 pts rotated 0 degrees.
The bosch d jetronic electronic fuel injection system is composed of 3 major subsystems. Bosch lejetronic fuel injection system volvo owners club. The le jetronic system is analog, and therefore it does not keep in memory possible damage that may occur. 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. There were three iterations of it in audis simplest ke jetronic, with vacuum ignition or with electronic ignition, ke3 jetronic equipped 10v. While all bosch workshop manuals recommend the bosch efaw 228, i can calm you down that you do not have to spend up to for such a tool. The l jetronic aod ils variants are electro nically controlled fuelinjection systems solenoidopersle bosch ke jetronic fuel injection system can be diagnosed and repaired on an example of audi 100 2. A thorough understanding of the various components is required before working on k jetronic fuel systems. This little goody is a common culprit in kjet or cis problems, along with pumps, oneway valves, accumulators and fuel distributors. Since their introduction, the jetronic fuel injection systems have proved themselves millions of times over under the harsh conditions of everyday driving.
Certain operating conditions make it necessary to correct the mixture accordingly. Bosch ke3 jetronic 539 89 injection system manual 328 mondial to read online or download as pdf. If the inlet air temperature sensor fails its resistance tests, you cant service just the sensor. In the le jetronic system, the injection valves spray the fuel simultaneously, what is to say, they are all driven at the same time. The key is to advance the timing to the peak power point. Spec alfa romeo gtv6s, milanos, and 19821989 spiders, bmw e12 5 series and various 3 series cars, the datsun 280z and 280zx, all u. Primarypressure regulator, kjetronic bosch classic.
Direct petrol injection system with bosch motronic med 7. 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. Bdom mrrying out any te ensure that the battery h in r fully charged condkion. Having recently sorted out a problem with mine, and hopefully understanding its. Detach the operational relay set from the relay block as well as from the safety appliance located under the steering tube. Mono jetronic jetronic fuelinjection systems have proved their worth in millions of vehicles since they were introduced. Bosch ke jetronic system the bosch ke jetronic fuelinjection system is fitted to escort rs turbo models and is a further development of the k jetronic system. This synthesis, comprising the mechanical basic functions coupled with electronic adap tation and opti mization functions, is the ke jetronic. Sep 15, 2012 everyhing about bosch d jetronic some wrongly write djetronik 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. Nov 21, 2009 ning of the era of fuel injection at these were joined by bosch mono bosch, but there was still a long path jetronic in 1987. Anyhow here is the link bosch kjetronic fuel injection manual. If you want to measure deeply in your djetronic, you will need a multimeter. In this system, the injection command unit controls only the fuel system.
This is a direct result of the advantages inherent in fuel injection with regard to presentday demands for economic efficiency, performance and, not least important, cleaner exhaust emissions. Bosch classic, remakes, primary pressure regulator, k ke jetronic. Mechanical fuel injection bosch k jetronic, bosch k jetronic fig. Bosch l jetronic fuel injection troubleshooting, maintenance. They have the potential to reduce fuel consumption by up to 15% compared to a similar engine with intake manifold injection. Bosch licensed the concept to many automobile manufacturers. Plus a forum where drdjet and other experts help with competent advice and repair instructions. The following table is a guide to the fuel paths marked by each blue arrow in figure 6. The fuel return line was also eliminated and a check ball installed in its place. 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.
The details in this file refer to ke jetronic 19841987 on the us coupe and 4k the 1987. 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. Since remakes are not always economically feasible, airflow meters that are sent to us are assessed in the bosch plant and refurbished if necessary. The primary pressure regulator that is installed in the fuel distributor housing maintains a constant pressure in the fuel system of the k jetronic. Kejetronic bosch technical instruction series bosch, robert on.
Do not confuse the electric fuel pump with the injection pump. This manual can be viewed on any computer, as well as zoomed and printed, makes it easy to diagnose and repair problems with your machines electrical system. While new carburated engines were used in the european markets, vw adapted the ljetronic for the type 4 in the us due to more stringent emissions and fuel consumption regulations. Onsomel jetronic systems, the air temperature sen sor is visible in the air flow meter inlet. I am also addressing the basic settings involved in adjusting the fuel mixture here. 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 engines fuel requirements a sparkignition engine needs a particular airfuel ratio in order to operate.
Playing with your k jetronic warm up regulator, or wur. Bosch ke3 jetronic 539 89 injection system manual 328 mondial. The airflow sensor is therefore a functional component of the k jetronic. R02cr e b colqegu couivo\ aglase we guq ph ph ecn le logq coucvtloue eae16uj sqgble 10 cugua vqsblsqou ob6lguua couqguoue guq nuq6l bgl11cr1gl logq. The d jetronic system developed by bosch in the early 1960s was the first massproduction electronic fuel injection system.
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