The L-/LE-Jetronic injection unit is an electronic injection unit in a gasoline engine that delivers pulsed fuel into the intake pipe in front of the intake valves.
Fuel is supplied by an electric fuel pump from the fuel tank through the fuel filter to the distribution pipe and then to the injectors. The pressure regulator in the distribution tube ensures constant pressure. The vibration damper reduces pressure fluctuations in the fuel return duct.
Air is drawn in by the engine through the air filter and air intake pipe and is measured by the air mass meter. In the case of the air flow meter there is a damper, which is deflected by the air passing through it at a certain angle. The angular position of the damper serves as a measure of the amount of air passing through. Information about this quantity is transmitted to the control unit from the potentiometer.
Stabilization of the engine speed during the warm-up process is provided by an additional air damper.
The throttle switch is located directly on its axis. It sends throttle position signals to the control unit at idle and full load. Thanks to this, first of all, control is carried out in the forced stroke mode; as long as the throttle switch contact is closed and at the same time the speed exceeds 1200 rpm, the fuel supply to the engine is blocked.
The control unit is located behind the trim in the glove box.