In the automotive industry, sensors play a crucial role. They are an important part of the automotive electronic control system, which helps ensure the smooth operation of the engine by monitoring and transmitting various parameters. This article will introduce some common automobile engine sensors, including air flow sensor, intake pressure sensor, throttle position sensor, crankshaft position sensor and knock sensor.

What is an engine sensor?

A sensor is a device or device that can sense changes in the measured indicator and convert it into a usable output signal. In automobile engines, sensors are used to detect various parameters of the engine, such as air flow, intake pressure, throttle position, crankshaft position, etc., and convert these parameters into electrical signals for use by the engine control system.

The principle of engine sensors

The principle of the sensor is usually to convert the change of the measured parameter into the change of the electrical signal. In the automobile engine, the principle of the sensor is to design the corresponding sensor structure according to the working principle of the engine and the change law of various parameters, and use sensitive elements to convert the changes of various parameters into changes in electrical signals. For example, the air flow sensor calculates the amount of air entering the engine by measuring the flow rate and flow of air, and converts it into an electrical signal; the intake pressure sensor calculates the load state of the engine by measuring the absolute pressure in the intake manifold, And convert it into an electrical signal.