What are the functions of two sensors in Chang 'an Aidi automobile gearbox?

Lift front wheel speed

The speed sensor detects the speed of the electronically controlled vehicle, and the control computer uses this input signal to control the idle speed of the engine, the locking of the torque converter of the automatic transmission, the shifting of the automatic transmission, the opening and closing of the engine cooling fan, cruise control and other functions. The output signal of the vehicle speed sensor can be a magnetoelectric alternating current signal, a Hall digital signal or a photoelectric digital signal. The speed sensor is usually installed in the drive axle housing or transmission housing, and the signal line of the speed sensor is usually installed in the shielding sheath. This is to eliminate the electromagnetic and radio frequency interference caused by high-voltage live wires and car phones or other electronic equipment, ensure that electronic communication will not be interrupted, and prevent the deterioration of driving performance or other problems. Magnetoelectric and photoelectric transducer are the two most widely used speed sensors in automobiles. Magnetoelectric sensors are widely used to control vehicle speed (VSS), crank angle (CKP) and camshaft angle (CMP) in various automobiles in Europe, North America and Asia, and can also be used to sense the speed and position signals of other rotating parts, such as compressor clutches.