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.) via the ECU.
What is the benefit of mechanical direct injection?
Direct injection incorporates a fuel-delivery technology that optimizes gasoline engines and allows them to burn more fuel more efficiently. In turn, this improves the engine’s fuel economy and makes it more powerful.
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.
What’s the difference between A L Jetronic ECU and a Le ECU?
This is a simplified and more modern variant of L-Jetronic. The ECU was much cheaper to produce due to more modern components, and was more standardised than the L-Jetronic ECUs. As per L-Jetronic, a vane-type airflow sensor is used. Compared with L-Jetronic, the fuel injectors used by LE-Jetronic have a higher impedance.
How is K-Jetronic different from pulsed injection systems?
K-Jetronic is different from pulsed injection systems in that the fuel flows continuously from all injectors, while the fuel pump pressurises the fuel up to approximately 5 bar (73.5 psi). The volume of air taken in by the engine is measured to determine the amount of fuel to inject.
How does fuel injection work on a Bosch Jetronic engine?
Both of these Electronically Controlled Gasoline Injection systems ( ECGI) are almost identical ex cept for one feature. On the earlier D-Jetronic system, fuel delivery was regulated by an intake manifold pressure sensor. On the newest L-Jetronic system, the fuel delivery is regulated by the amount of air flow into the engine.