Before checking any other part of the system, this sensor. Sep 18, 2019 ke3 jetronic pdf mercedes suggests that special tools are required to adjust the mixture on the bosch ke3 jetronic. Hesselman engines use the ultra lean burn principle. Ljetronic fuel injection systems for bmw e12s first fives. K jetronic is the term used by bosch to describe a fuel injection system which features continuous injection. In the le jetronic system, the injection valves spray the fuel simultaneously, what is to say, they are all driven at the same time. It was primarily based on patents that bosch licensed from the bendix corporation. Jetronic fuel injection part 2 jaguar v12 the map sensor is the heart of the djetronic fuel injection system. Djetronic history and fundamentals history the djetronic system developed by bosch in the early 1960s was the first massproduction electronic fuel injection system. Onsomel jetronic systems, the air temperature sen sor is visible in the air flow meter inlet. Robert bosch this manual is designed to assist the technician unfamiliar with robert bosch. Today, it has been superseded by gasoline injection systems which thanks to. Haynes diagram is good, but owners manual shows more. The ongoing development of the control unit and the sensors has led from the d jetronic to the ljetronic, and resulted in this fuelinjection system becoming.
Between the years 1973 and 1995, the highly reliable, mechanical multipoint injection system k jetronic was installed as original equipment in seriesproduction vehicles. I am pretty lost as to all the connections, especially to the manifold itself. However, with the ljetronic system our cars use, about 90% of the complexity. I just purchased it with the computer brain and manifold. Our bosch fuel injection pumps workshop manuals contain indepth maintenance, service and repair information. In this system, the injection command unit controls only the fuel system. Bosch l jetronic fuel injection idle adjustment, diagnostic and tune up page for usa. However the components of other cars using ljetronic will. Bosch ljetronic fuel injection troubleshooting, maintenance. This page was last edited on 30 novemberat sequential fuel injection and knock control. For the first 30 seconds, up to 60% additional fuel will be provided to. Direct fuel injection was used in notable world war ii airplane engines such as the junkers jumo 210, the daimlerbenz db 601, the bmw 801, the shvetsov ash82fn m82fn.
Vw ljetronic fuel injection workshop manual created date. Robert bosch ljetronic efi system using mostly common workshop tools. The injection has as function to provide the amount of fuel exactly. Combined ignition system and luel injection system molfonlc. Approximately up until 1994 mechanical fuel injection systems have been installed on certain mercedes, audi, volkswagen, ford etc. This diagram was adapted from the porsche 912e workshop manual and has been enhanced to provide additional information to assist in isolating fuel injection problems.
Bosch ke jetronic continuous injection system mechanical fuel injection overview part 1of 6 fuel injection system bosch cise 1986 fuel systems mercedesbenz cise electronic control system description the fuel injection system used on all mercedesbenz gasoline engine vehicles uses. Gasoline fuel injection system ljetronic bosch pdf download. Gtv6 and milano, however if you own any car with bosch ljetronic injection the article will still help you. The following table is a guide to the fuel paths marked by each blue arrow in figure 6. Mechanical fuel injection bosch k jetronic, bosch k jetronic fig. Jetronic controls fuel supply while the electronic ignition system provides optimal ignition control.
The lejetronic system is electronically commanded and injects the fuel in the intake manifold. The analogue brains primary function was to take readings from the air flow meter, and to control the fuel injection accordingly. Pdf application of hybrid ics to the automotive electronics market. Bosch l jetronic l jetronic rx7 brought to you by the team at created date. Xep publishing file id f541c9d50 by agatha christie hence the name l jetronic the l stands for luft the german word for air in 1990 bosch motronic fuel injection replaced l jetronic on. Stefan aachen hebrews nt wright for everyone bible study guidesmaytag mhw5500fc 4 5 cu ft front load washer with freshred cross wsi manualjurnal penyakit jantung koroner dftoseland and. The l jetronic was the first massproduced, fully electronic fuel injection system. The d jetronic system developed by bosch in the early 1960s was the first massproduction electronic fuel injection system. Cis kjetronic fuel injection tester with quick couplers tool aid. The bosch ljetronic fuel injection system used in the porsche 912e is often referred to as the air flow controlled or afc fuel injection system.
Kjetronic fuel injection system k jetronic is a mechanically and hydraulically operated fuel injection pump, introduced by bosch gmbh in the year 1973. Spec alfa romeo gtv6s, milanos, and 19821989 spiders, bmw e12 5 series and various 3 series cars, the datsun 280z and 280zx. Ljetronic the bosch ljetronic also called afcair flow controlled fuel injection was put into usspec type 4s in the last model year 1974. The technical instruction bookletfuel injection con tinuous injection system cisat the back of the manual describes the components and operation of the kjetronic fuel injection system in detail. The bosch l jetronic fuel injection system is electronically controlled to regulate the fuel supply in relation to the air flow. Ljetronic fuel injection technical troubleshooting article. Introduction n this seminar will describe the l jetronic system. The ljetronic is an electronically controlled fuel injection system which has the advantage of direct air flow sensing. The ljetronic was the first massproduced, fully electronic fuel injection system. Considerable fuel enrichment is required for a period of time after a cold start. This manual describes the troubleshooting and repair of vehicles with the. These early motronic systems integrated the spark timing element with thenexisting jetronic fuel injection technology.
Ljetronic fuel injection systems for bmw e12s peter florance. Jetronic is a trade name of a fuel injection technology for automotive petrol enginesdeveloped and marketed by robert jetrnoic gmbh from the s onwards. 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. Gregs bosch l jetronic fuel injection idle adjustment, diagnostic and tune up page, latest revision sept. If the vehicle has an automatic transmission, put into neutral c. Bosch l jetronic fuel injection troubleshooting, maintenance. Above all popular belief it takes these modules quite a bit to go bad.
File type pdf d jetronic manual d jetronic manual understanding djetronic fuel injection an overview of bosch djetronic in jaguar v12s 19751980 an overview of bosch djetronic as used in jaguar v12s from 1975 to 1980. Bosch licensed the concept to many automobile manufacturers. Volkswagen adapted the ljetronic for the type 4 air cooled 411 engines sold porsche 912e workshop manual and has been enhanced to provide additional. Spec alfa romeo gtv6s, milanos, and 19821989 spiders, bmw e12 5 series and various 3 series cars, the datsun 280z and 280zx, all u. File type pdf bosch l jetronic fiat fuel injected engines guide file type the bosch l jetronic system is used on all u. Materials and specifications are subject to change without notice. Gasoline fuel injection system mono jetronic pdf995 bitbin. Bosch l jetronic fiat fuel injected engines guide file type. The task of a fuel injection system is to supply precise amount of fuel to the combustion chamber at that particular moment. Digital data processing and microprocessors make it possible to translate extensive operating. Vw ljetronic fuel injection workshop manual author. The ongoing development of the control unit and the sensors has led from the djetronic to the ljetronic, and resulted in this fuelinjection system becoming. Bosch superseded the djetronic system with the kjetronic and ljetronic systems for 1974, though some cars such as the volvo 164 continued. Gasoline fuel injection system ljetronic bosch pdf.
Fuel injection fundamentals porsche club of america. Bosch developed an electronic fuel injection system, called djetronic d for druck, german for pressure, which was first used on the vw 1600tle in 1967. Fuel injection pumps bosch service repair workshop manuals. Displaying manualsistemainyeccion l jetronic motoresautomovilescomponentesfuncionamiento.
Bosch ljetronic overview checking your ke jetronic fuel pressures this video is. If the inlet air temperature sensor fails its resistance tests, you cant service just the sensor. Small amount of air bypasses the throttle so the engine gets air. Online library bosch l jetronic fuel injection free manual bosch l jetronic fuel injection free manual bosch l jetronic fuel injection 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. Originally, volkswagen adapted the ljetronic for the type 4 air cooled 411 engines sold in the united states due to more stringent emissions and fuel consumption regulations. Prior to l jetronic, mechanical fuel injection systems had proven that directly injecting atomized fuel into the cylinder resulted in better engine operation. 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. Turn off air conditioning if fitted the average system pressure on all kjetronic fuel systems should be 520 kpa. Unlike k jetronic, this system took readings from sensors around the engine and made its fuelling accordingly.
Bendix developed the basic idea of using an inductive element coupled to manifold vacuum as 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. Vw ljetronic fuel injection workshop manual pdf yumpu. Bosch digifant engine management system jetronic motronic. Please consult your local distributor for those items you may require. Before troubleshooting, testing or adjusting the k jetronic fuel injection system, the. Ljetronic electronic fuel injection only 530i 528i. Combining this direct injection theory with electronic sensors, valves. If your bike is a abs model in the tail section is the abs control unit. 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. The d jetronic controlled by intakemanifold pressure.
Bosch le jetronic bmw copyright equiptech boschlejetronic thereismuchconfusionabouttheactualtypeofinjectionsystemfittedtomanybmwmotorcarsduringtheperiod1980to. Can anyone provide a pdf or file on the jetronic fuel injection. Page 20 l jetronic system diagram the next diagram is a schematic drawing of the complete l jetronics fuel injection system. Singlepoint fuel injection singlepoint throttlebody injection tbi fuel injection is the concept behind this electronicallycontrolled injection system in which a centrally located solenoid operated injection valve mounted upstream from the. There are several variations of the technology offering technological development and refinement. L jetronic is the term used by bosch to describe a fuel injection system controlled by the air flowing through a sensor.
The l jetronic aod ils variants are electro nically controlled fuelinjection systems solenoidopersle jun 17, 2019 ke3 jetronic pdf mercedes suggests that special tools are required to adjust the mixture on the bosch ke3 jetronic. 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 k jetronic dme motronic afc l jetronic mpi d jetronic. A thorough understanding of the various compo nents is required before working on kjetronic fuel systems. 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. Fuel injection system fault finding l jetronic fuel injection system engine difficult to start, or fails to start when cold probable cause corrective action cold start injector or thermotime switch faulty test cold start injector and thermotime. 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. Motronic, featuring digital processing for numerous engine functions. Download file pdf l jetronic workshop manual saab l jetronic workshop manual saab bosch kjetronic fuel distributor seal replacement video to show how i replaced the seals in my mk2 golf 16v kjet fuel distributor. Continuous injection system found on european cars and volkswagen models assembled in the u. A computer controls the injection and ignition systems with reference to shared optimization criteria. In a fuel injection system the entire operation is based on the amount of air entering the. A thorough understanding of the various components is required before working on k jetronic fuel systems. Specifically for my 1982 alfa romeo spider but this should work on any l jetronic or motroinic fule injection. I saw the pdf on this site for the conversion, thanks that will help, but i.
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. The le jetronic system is analog, and therefore it does not keep in memory possible damage that may occur. Le jetronic was the first engine management system for the e30 to feature an ecu. Bosch ljetronic and motronic fuel injection systems repair guide. Ke3 jetronic pdf mercedes suggests that special tools are required to adjust the mixture on the bosch ke3 jetronic. This manual may contain attachments and optional equipment that are not available in your area. An air flow meter, located in the air intake chamber, converts angular movement of an air baffle plate into a voltage signal, which is sent to the control unit. Aug 18, 2019 ke3 jetronic pdf mercedes suggests that special tools are required to adjust the mixture on the bosch ke3 jetronic. The l jetronic aod ils variants are electro nically controlled fuel injection systems solenoidopersle l jetronic in iha bosch technical instruclion series.