Over a century of system expertise over a century of system expertise l jetronic components ke jetronic components motronic components mono jetronic components intake module gasoline direct injection the bosch success story in figures more than 100 years of experience, more than 10,000 items in the full gasoline injection range. Gasolineengine management gasoline fuelinjection system k jetronic technical instruction. 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. A friend of mine loaned me under penalty of death if i lose it a cis bosch i jetronic fuel injection pressure tester. Pmcedum 1 fuel pump andor prepurnp not operating correctly. In the le jetronic system, the injection valves spray the fuel simultaneously, what is to say, they are all driven at the same time. Bosch kjetronic fuel injection systems volvo owners club. This particularly cost to travel on the way to fuel injection for efficient singlepoint injection unit passenger cars.
By being a smart visitor and when you come to our website you can read and download. The primary pressure regulator that is installed in the fuel distributor housing maintains a constant pressure in the fuel system of the k jetronic. In this system, the injection command unit controls only the fuel system. Mar 02, 2012 bosch k jetronic fuel distributor duration.
Ke jetronic cise fuel pressure testing is very similar to the old mechanical version. Robert bosch ljetronic efi system using mostly common workshop tools. 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. 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. Converting the opel cih engine to fi bosch l or le jetronic is not quite as daunting as it would seem. This is why we offer the books compilations in this website. The d jetronic system uses constant fuel pressure and flow, so that only injection duration needs to be modified to control airfuel mixture. Our bosch fuel injection pumps workshop manuals contain indepth maintenance, service and repair information. The efaw 228 is nothing but a multimeter for measuring voltage or resistor plus a switch to activate your fuel pump permanently. 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. Most of the information i will use comes from course notes i have from attending the ford service training college at daventry on the bosch kjetronic fuel.
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. 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 warmup regulator, also called the control pressure regulator, lowers the control pressure of the k jetronic when the engine is cold. You should understand this fuel injection system before you begin working. By club member john hall, who worked for volvo usa for many years. The 27way jetronic wiringharness connectors are durable plugin connections for. There are several variations of the technology offering technological development and refinement. Since remakes are not always economically feasible, airflow meters that are sent to us are assessed in the bosch plant and refurbished if necessary.
This further deflects the control plunger in the fuel distributor and correspondingly supplies additional fuel. After a few days, you receive the repaired airflow sensor which is covered by the bosch exchange parts warranty. Originally, volkswagen adapted the l jetronic for the type 4 air cooled 411 engines sold in the united states due to more. 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. Fuel metering distributor rebuild kit for mercedes 190e. Fuel metering distributor rebuild kit bosch ke jetronic fuel distributor this kit will fit mercedes 190e years 1984 1986 with the following fuel metering distributor part numbers. Bosch ljetronic fuel injection troubleshooting, maintenance. 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.
Bosch l jetronic fuel injection troubleshooting, maintenance. Do you like to read and collect bosch mono jetronic manual pdf epub. So jaguar asked lucas to use bosch d jetronic and extend it for 12cyinder engines. If you want to measure deeply in your djetronic, you will need a multimeter. It was primarily based on patents that bosch licensed from the bendix corporation. 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. So jaguar suddenly had no solution and bosch could only supply a product for 4, 6 and 8cylinder engines. With the k jetronic, the preparation is performed by the mixture control unit which consists of a fuel distributor and an airflow sensor. A thorough understanding of the various components is required before working on k jetronic fuel 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. 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. Bosch k jetronic service guide pdf by alvinclark4261 issuu.
K jetronic fuel supply an electrically driven fuel pump delivers k jetronic the fuel to the fuel distributor via a fuel system. Bosch classic, remakes, primary pressure regulator, kke jetronic. If the engine stops but the ignition remains switched on, the electric fuel pump is switched off. The d jetronic system developed by bosch in the early 1960s was the first massproduction electronic fuel injection system. Ljetronic the bosch ljetronic also called afcair flow controlled fuel injection was put into usspec type 4s in the last model year 1974. This system description and tests are based upon the cavalier and carlton vehicles equipped with motronic 1. L jetronic system throttle and idle control n throttle opens to allow more air to sucked in to engine n small amount of air bypasses the throttle so the engine gets air and will idle.
Since this point, the k jetronic has now become particularly important with regard to. Spec alfa romeo gtv6s, milanos, and 19821989 spiders, bmw e12 5 series and various 3 series cars, the datsun 280z and 280zx, all u. Since their introduction, the jetronic fuel injection systems have proved themselves millions of times over under the harsh conditions of everyday driving. Bosch kjetronic fuel injection part 1 volvo owners club. The bosch d jetronic electronic fuel injection system is composed of 3 major subsystems. The engines fuel requirements a sparkignition engine needs a particular airfuel ratio in order to operate. In bosch enginemanagement systems featuring electronic throttle control etc, the cylindercharge control subsystem determines the required inductionair. Primarypressure regulator, kjetronic bosch classic. Fuel injection pumps bosch service repair workshop manuals. L jetronic electronic control unit ecu, airflow sensor, system relay, fuel pump relay, lambdasond oxygen sensor, vacuum switch, electric fuel pump, coolant.
Mechanical fuel injection bosch k jetronic, bosch k jetronic fig. The airflow sensor is therefore a functional component of the k jetronic. Combustion in the gasoline engine, the sparkignition or ottocycle engine, gasolineengine management, technical. In the us, salvage yards can only be used as a source for the l jetronic system used on 1975 opel models. The le jetronic system is analog, and therefore it does not keep in memory possible damage that may occur. Infact i used my same tester i bought years ago to work on my none 450sel 6. 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. In the mean time, lets strive to demystify what fi is, how vw does it, and how to keep our sciroccos running. Onsomel jetronic systems, the air temperature sen sor is visible in the air flow meter inlet. Bosch licensed the concept to many automobile manufacturers. Combined ignition system and luel injection system molfonlc. The l jetronic aod ils variants are electro nically controlled fuelinjection systems solenoidopersle bosch k jetronic, bosch k jetronic fig. Bdom mrrying out any te ensure that the battery h in r fully charged condkion.
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. Robert bosch gmbh, 2000postfach 3002 20,d70442 stuttgart. 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. 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. Certain operating conditions make it necessary to correct the mixture accordingly. 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.
Not the why nor necessarily the how, primarily the what fuel injection theory brief overview of porsche fuel injection systems along the way, well look into the functions of the parts themselves injectors fuel pump pressure regulatorsdampers oxygen sensor. They have the potential to reduce fuel consumption by up to 15% compared to a similar engine with intake manifold injection. L jetronic system, although a number of refinements have improved operation. Fuel injection fundamentals porsche club of america. The complete system contains the following components. The l jetronic aod ils variants are electro nically controlled fuelinjection systems solenoidopersle jetronic in iha bosch technical instruclion series. R shoutd be noted that all components of the system except the injectors can be tested on the vehicle. Jetronic bosch pdf download this manual may contain attachments and optional equipment that are not available in your area owner manuals bosch home appliances click book now to see if you can book a service visit with a bosch technician or if a bosch. Download ebook bosch mono jetronic manual seadart bosch mono jetronic manual seadart when somebody should go to the books stores, search launch by shop, shelf by shelf, it is in reality problematic.
Ke3 jetronic pdf mercedes suggests that special tools are required to adjust the mixture on the bosch ke3 jetronic. By controlling both major systems in a single unit, many aspects of the engines characteristics such as power, fuel economy, drivability, and emissions can be improved. Detach the operational relay set from the relay block as well as from the safety appliance located under the steering tube. Ive been having this problem whereby upon acceleration especially from stop my 420sel stutters and stumbles, then catches and continuous accelerating just fine. The following table is a guide to the fuel paths marked by each blue arrow in figure 6. Direct petrol injection system with bosch motronic med 7. The bosch lh jetronic electronic fuel injection system became available on the b21flh engine in 1982 and on the b23flh in 1983. There seems to be a lot of dissagreement on what the version number is on this early system. Bosch k jetronic service guide pdf introduction this bosch k jetronic service guide pdf pdf document begin with intro, brief session until the indexglossary page, read the table of content for. Im going to toss some links on here as sourdough starter. Limiting factor was the current that the bosch 6calinder ecu could supply to injection valves. A 55 pin connector and multiplug connects the ecu to the battery, sensors and actuators.
Bosch ke3 jetronic 539 89 injection system manual 328 mondial. It will totally ease you to look guide bosch mono jetronic manual seadart as you such as. The bosch djetronic electronic fuel injection system is composed of 3 major subsystems. Automotive equipment business sector,department for automotive services,technical publications khpdi2.
The circuit posted by rick is nice and despite the lack of information about ics like bb 0124 or bb 0126 it seems that is in the accordance with the principle of operation described in the bosch official brochure about ljet. Today, it has been superseded by gasoline injection systems which thanks to electronics have been vastly improved and expanded in their functions. Anyhow here is the link bosch kjetronic fuel injection manual. 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. Bosch k jetronic fuel injection manual pdf document. 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. The k jetronic was used as original equipment in massproduced vehicles between 1973 and 1995. Better yet would be to research, edit and post up a completly refined web page link of my own, aint got one yet. How can i tell which version of bosch lh fuel injection is on. Bosch gasoline fuel injection from the year 1954 12 15. 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. Solely responsible for a 23 horsepower increase on the 2 liter engines, this system, known as bosch l jetronic, was popular not only. Motronic is the trade name given to a range of digital engine control units developed by robert bosch gmbh commonly known as bosch which combined control of fuel injection and ignition in a single unit. If the inlet air temperature sensor fails its resistance tests, you cant service just the sensor.
799 502 81 1232 1118 666 123 943 623 903 1386 1338 1157 833 843 443 1373 983 86 548 387 495 18 504 1052 674 1198 480 776 398 1347 520 1189