Ljetronic the bosch ljetronic also called afcair flow controlled fuel injection was put into usspec type 4s in the last model year 1974. 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. Bosch classic, remakes, primary pressure regulator, kke jetronic. Uber 100 millionen schaltzyklen haben sie meist absolviert, wenn sie ausgetauscht werden. For such cars you need a 123ignition with the ieoption. Today, it has been superseded by gasoline injection systems which thanks to electronics have been vastly improved and expanded in their functions.
Bosch djetronic in jaguar v12s 19751980 an overview of. I have been working in the motor trade for almost 10 years years now, and have been working with k jetronic for 8 of them. You can open them as pdf file or save them on your computer. After a few days, you receive the repaired airflow sensor which is covered by the bosch exchange parts warranty. Vw l jetronic fuel injection workshop manual author.
Detach the operational relay set from the relay block as well as from the safety appliance located under the steering tube. Testing fuel pressure understanding d jetronic fuel. Testing fuel pressure understanding djetronic fuel. Original factory and aftermarket manuals for every car, truck and motorcycle. The bosch djetronic electronic fuel injection system is composed of 3 major subsystems. There are several variations of the technology offering technological development and refinement. The correct owners manual, repair manual, shop manual, parts manual and more. Mechanical fuel injection bosch k jetronic, bosch k jetronic fig. Combined ignition system and luel injection system molfonlc.
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. Online library service manual d jetronic service manual d jetronic 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. Kjetronic kejetronic fuel injection system repairs and. 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. The airflow sensor is therefore a functional component of the k jetronic. 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. File type pdf d jetronic manual d jetronic manual understanding d jetronic fuel injection an overview of bosch d jetronic in jaguar v12s 19751980 an overview of bosch d jetronic as used in jaguar v12s from 1975 to 1980. Bosch k jetronic mechanical fuel injection troubleshooter. Limiting factor was the current that the bosch 6calinder ecu could supply to injection valves.
The le jetronic system is analog, and therefore it does not keep in memory possible damage that may occur. The bosch lhjetronic electronic fuel injection system became available on the b21flh engine in 1982 and on the b23flh in 1983. They have the potential to reduce fuel consumption by up to 15% compared to a similar engine with intake manifold injection. Jetronic fuel injection this ulde is designed to be used in con unction with robert bosch jetronic service anual.
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 k jetronic fuel injection system training course. Vw l jetronic fuel injection workshop manual created date. Primarypressure regulator, kjetronic bosch classic. Diagnostics and spare parts from a single source product. At the 1967 introduction, bosch called it ecgi, electronically controlled. Its most interesting to see how ljetronic evolved from djetronic. Chapter of d jetronic articles by drdjet describes systematic fault finding troubleshooting and repair on your bosch fuel injection system. The djetronic system uses constant fuel pressure and flow, so that only injection duration needs to be modified to control airfuel mixture. The l jetronic aod ils variants are electro nically controlled fuelinjection systems solenoidopersle pelican parts forums. Anyhow here is the link bosch kjetronic fuel injection manual. Spec alfa romeo gtv6s, milanos, and 19821989 spiders, bmw e12 5 series and various 3 series cars, the datsun 280z and 280zx, all u. Unfollow bosch jetronic to stop getting updates on your ebay feed. The bosch lh jetronic electronic fuel injection system became available on the b21flh engine in 1982 and on the b23flh in 1983.
The l jetronic aod ils variants are electro nically controlled fuelinjection systems solenoidopersle bosch k jetronic manual mercedes. 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 system developed by bosch in the early 1960s was the first massproduction electronic fuel injection system. 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. Ljetronic electronic control unit ecu, airflow sensor, system relay, fuel pump relay, lambdasond oxygen sensor, vacuum switch, electric fuel pump, coolant. Kjetronic fuel supply an electrically driven fuel pump delivers kjetronic the fuel to the fuel distributor via a fuel system. Its wide use throughout the industry justifies its coverage in this manual. Direct petrol injection system with bosch motronic med 7. The airflow sensor is therefore a functional component of the kjetronic. 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. Djetronic was the first of the bosch pulsed injection systems. A thorough understanding of the various components is required before working on k jetronic fuel systems. The d jetronic system uses constant fuel pressure and flow, so that only injection duration needs to be modified to control airfuel mixture.
If the inlet air temperature sensor fails its resistance tests, you cant service just the sensor. So jaguar asked lucas to use bosch djetronic and extend it for 12cyinder engines. In the le jetronic system, the injection valves spray the fuel simultaneously, what is to say, they are all driven at the same time. This particularly cost to travel on the way to fuel injection for efficient singlepoint injection unit passenger cars. It was primarily based on patents that bosch licensed from the bendix corporation. File type pdf d jetronic manual injection part 2 jaguar v12 the correct fuel pressure is critical for smooth running. Specifically for my 1982 alfa romeo spider but this should work on any ljetronic. If in doubt, spray break cleaner on pipes, hoses, injectors, intake manifold and map sensor. By club member john hall, who worked for volvo usa for many years. Bosch djetronic fuel injection troubleshooting and repair. Cars with bosch djetronic injection, had a distributor with a threepole connector on the side. Bosch classic, remakes, primary pressure regulator, kkejetronic.
Online library service manual d jetronic service manual d jetronic understanding d jetronic fuel injection an overview of bosch d jetronic in jaguar v12s 19751980 an overview of bosch d jetronic as used in jaguar v12s from 1975 to 1980. Kejetronic bosch technical instruction series bosch, robert on. Bosch l jetronic fuel injection troubleshooting, maintenance. The complete system contains the following components. In this system, the injection command unit controls only the fuel system. The primary pressure regulator that is installed in the fuel distributor housing maintains a constant pressure in the fuel system of the kjetronic. Chapter of djetronic articles by drdjet describes systematic fault finding troubleshooting and repair on your bosch fuel injection system. Robert bosch automotive service djetronic fuel injection. 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. The bosch d jetronic electronic fuel injection system is composed of 3 major subsystems.
Since this point, the k jetronic has now become particularly important with regard to. Ac switch system relay pressure regu lator fuel distribution. Bosch ke3 jetronic 539 89 injection system manual 328 mondial to read online or download as 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. 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. Bosch licensed the concept to many automobile manufacturers. So jaguar asked lucas to use bosch d jetronic and extend it for 12cyinder engines. 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. Onsomeljetronic systems, the air temperature sen sor is visible in the air flow meter inlet. The djetronic system measures incoming airflow by monitoring. Bosch l jetronic l jetronic rx7 brought to you by the team at created date.
Het kjetronic injectiesysteem is een volkomen nieuwe methode voor benzineinjectie. Onsomel jetronic systems, the air temperature sen sor is visible in the air flow meter inlet. 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. The primary pressure regulator that is installed in the fuel distributor housing maintains a constant pressure in the fuel system of the k jetronic. Over a century of system expertise over a century of system expertise ljetronic components kejetronic components motronic components monojetronic 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. 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 123ignition can be supplied with the hightension cables coming out upward rmodel or sideward amodel. So jaguar suddenly had no solution and bosch could only supply a product for 4, 6 and 8cylinder engines.