How does LH Jetronic work?

How does LH Jetronic work?

Overview of L/LH-Jetronic Fuel Injection Systems In pulsed injection, all air entering the engine first flows through an air-mass meter. The air-mass meter measures the air, which indicates engine load, and converts that measurement into an electrical signal to the control unit (ECU).

What is the main feature of L Jetronic system?

Instead of injecting fuel into the intake, this injector allows fuel to bypass the fuel distributor, which varies the fuel pressure supplied to the mechanical injection components based on several inputs (engine speed, air pressure, coolant temperature, throttle position, lambda etc.)

How do you adjust a Mercedes fuel distributor?

Start by turning the screw clockwise 1/64th a turn then try to start the car. To make sure, you need a 3mm hex screw. Put it into the air metering hole and push down until you get resistance. Then turn the screw GENTLY with a small amount of downward pressure.

What does an engine management system do?

The engine management system is the arrangement of the devices for controlling a vehicle’s engine. If the car is stolen, the unit will block the vehicle’s engine management system and prevent the engine being restarted. The engine management system shuts down four of the eight cylinders when the power isn’t needed.

How does the L Jetronic fuel injection system work?

The L-Jetronic is an electronically controlled fuel injection system which has the advantage of direct air flow sensing. It injects intermittently into the intake ports.

Who is the inventor of Jetronic manifold injection?

Jetronic is a trade name of a manifold injection technology for automotive petrol engines, developed and marketed by Robert Bosch GmbH from the 1960s onwards. Bosch licensed the concept to many automobile manufacturers. There are several variations of the technology offering technological development and refinement.

What’s the difference between L and LE Jetronic?

Compared with L-Jetronic, the fuel injectors used by LE-Jetronic have a higher impedance. Three variants of LE-Jetronic exist: LE1, the initial version. LE2 (1984–), featured cold start functionality integrated in the ECU, which does not require the cold start injector and thermo time switch used by older systems.

How is Mono Jetronic different from other fuel injection systems?

In the US, this kind of single-point injection was marketed as ‘throttle body injection’ (TBI, by GM), or ‘central fuel injection’ (CFI, by Ford). Mono-Jetronic is different from all other known single-point systems, in that it only relies on a throttle position sensor for judging the engine load.

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