a position sensor common type
a crankshaft position sensor
crankshaft position sensor, also known as engine speed and crank angle sensor, the English name Crankshaft Position Sensor, referred to the CPS, which function is to collect the crank angle and the engine rotational speed signal, and input to the electronic control unit (ECu), in order to determine the ignition timing and injection timing. Crank position sensor is typically mounted in the distributor, the control system is one of the most important sensors.
which acts: detecting an engine speed, so-called rotation speed sensor; detecting the top dead center position of the piston, it is also referred to as a top dead center sensor, comprising dead center of each cylinder detected signal for controlling ignition , TDC signal on a first control procedure for fuel injection cylinder.
There are three main types of crankshaft sensors: magnetic induction, Hall effect and photoelectric.
Second, the camshaft position sensor
camshaft position sensor, also known as a cylinder identification sensor, the English name Cylinder Identification Sensor, referred to as the CIS, in order to distinguish the crankshaft position sensor (the CPS), the cam shaft position sensor is generally represented by the CIS.
Function
camshaft position sensor signal is acquired with the position of the camshaft, and enter the ECU, in order to identify the ECU cylinder compression top dead center, to perform sequential fuel injection control, ignition timing control and knock control. In addition, camshaft position signal is also used to identify the start of the engine ignition timing for the first time. Because the camshaft position sensor capable of identifying which cylinder a piston is about to reach the top dead center, so called cylinder identification sensor.