Power phase changer
The task of this device is to change the mode of operation of the intake valves depending on the engine load. This parameter is measured in the form of an electrical pulse generated by the air mass meter. Then this pulse, processed in the microprocessor module, is transmitted in the form of a control signal to the electromagnet (1, see Fig. 309) using a relay.
Rice. 309 Phase changer
Motronic injection system . Air mass meter Volkswagen .