Electronic throttle-valve actuator
An actuator is used to control the engine power via the accelerator pedal position. A direct current motor sets the throttle valve between idling and full load. The feedback of the throttle valve position and the direct current motor is via two potentiometers. These are integrated in the throttle-valve housing. Both potentiometers use the same ground and power supply. Both wiping contacts are directly linked to the throttle valve shaft. The characteristic curve of the first potentiometer has a positive rise, whereas the second has a negative rise (both have the same absolute value).
The throttle-valve actuator is integrated in the throttle-valve housing.