What is the working principle of the crankshaft position sensor?

[DeColton]

Working principle of the crankshaft position sensor: The crankshaft position sensor is usually installed at the front end of the crankshaft (near the pulley), the rear end of the crankshaft close to the large flywheel, or the middle of the crankshaft. In early models, it was also installed inside the distributor and is one of the most important sensors in the control system. Below is its related introduction: 1. Its functions include: detecting engine speed, hence it is also called the speed sensor; detecting the top dead center position of the piston, thus it is also known as the top dead center sensor, including detecting the top dead center signals of each cylinder for ignition control and the top dead center signal of the first cylinder for sequential fuel injection control. 2. There are mainly three types of crankshaft sensors: magnetic induction type, Hall effect type, and photoelectric type.