Blog

What is the function of the crankshaft position sensor?

Release time:

2022-11-15

In simple terms, its function is to detect the crankshaft's rotational speed and angle, determine the position of the crankshaft, and transmit the detected results to the engine computer or other computers.

In simple terms, its function is to detect the crankshaft's rotational speed and angle, determining the position of the crankshaft. It transmits the detected results to the engine computer or other computers. It needs to work in conjunction with the camshaft position sensor to determine the basic ignition timing. The engine computer controls ignition and fuel injection based on signals from this sensor, managing the timing of ignition and fuel injection as well as controlling the amount of fuel injected.

The crankshaft position sensor is generally installed at the front end of the crankshaft, front end of the camshaft, inside the distributor, or on the flywheel. There are three types of structures for crankshaft position sensors: magnetic induction type, photoelectric type, and Hall effect type.

The crankshaft position sensor is installed on the transmission clutch housing, located at the left rear side of the engine block. The crankshaft position sensor is secured with two bolts and has a rubber or cardboard gasket placed under its base to adjust its depth. Once the engine starts (after installing the crankshaft position sensor), any excess part of the gasket should be cut off. New spare sensors come with this gasket; if the original crankshaft position sensor has been reinstalled or if there is a replacement of transmission and clutch housing, a new gasket must be installed.

Latest News