Eccentric shaft sensor plays a vital role in automobile engine. By measuring the Angle of the eccentric shaft, it provides the actual parameters for the electronic valve control system, thereby adjusting the camshaft to ensure that the best intake valve lift can be achieved in various operating conditions. This regulation function is essential to the performance and efficiency of the engine
The operating principle of the eccentric shaft sensor is based on the magnetoresistive effect. When the eccentric shaft rotates, a magnetic wheel equipped with a permanent magnet causes the magnetic line of force to pass through the magnetic conductive material inside the sensor, causing a change in resistance. This resistance change is converted into an electrical signal and translated into valve travel by the engine control unit. The sensor adopts redundant design structure, two sensor components are installed in a housing, one sensor assumes the guiding task, the other sensor monitors its working status, to ensure the stability and reliability of the system
