The "Input" circuit inputs supply voltage signals from various sensors, including those from the 1st chamber throttle position sensor, intake air temperature sensor, and idle switch position sensor. The signals received from the sensors are converted into digital values.
In the "Processing" circuit, the input values are processed according to fixed programs into analog signals for calculating the output values. After conversion in the output stages, which are power amplification stages, the output signals are sent to the servo drives that control the movements of the air damper and the throttle valve of the 1st chamber. At the same time, depending on the operating conditions, the controller sends output signals to the electromagnetic valve for controlling the vacuum regulator of the ignition distributor sensor and to the main protection relay.
The controller design provides special protection against sudden changes in operating conditions, such as ambient temperature and battery voltage.
Incoming air temperature sensor
The intake air temperature sensor is a negative temperature coefficient sensor and is mounted on the intake manifold. The temperature measured by the sensor is fed as an electrical signal to the controller input.