What are the automobile engine sensors and what are their functions?

Hello, I'm glad to answer your question. Nowadays, cars are becoming more and more intelligent, and many functions on cars are controlled by computers, such as engine system, gearbox system, suspension system, brake system, air conditioning system, body control system and so on. In order to control these systems, the computer must get the correct information to confirm the state of the system, and then send the correct instructions to control the actions of the system, so as to carry out the driver's intention and control the car correctly. This information about the state of the reaction system is completed by an element called a sensor. Even a very ordinary car has dozens of sensors on it, and the number of advanced cars is as high as hundreds. So what are the functions of these sensors? I will take you to check the sensor on the car today.

There are many sensors in the car. The sensor is actually a detection device, which can sense the measured information and convert the sensed information into electrical signals or other required forms of information output according to certain rules to meet the requirements of information transmission, processing, storage, display, recording and control.

The application of sensors in automobiles can be said to be ubiquitous, such as odometer sensors, oil pressure sensors, water temperature sensors, vehicle speed sensors and so on. Modern cars generally have more than 65,438+000 sensors, which are mainly used in automobile dashboard, indicator light system and electronic control system.

The function of sensors on automobiles is firstly to measure working state parameters and limit parameters, to convert engine temperature, engine oil pressure, vehicle speed, engine speed and fuel tank oil level into corresponding voltage, current and electric pulse signals, and to drive instruments to display corresponding parameters. When the limit value is reached, the indicator light will give an alarm.

In addition, automobile sensors are used to realize various automatic control of automobiles. Automobile electronic control system is an important part of automobile machinery, including engine electronic control system, chassis electronic control system and body electronic control system, which are all composed of sensors, electronic control units (ECU) and actuators. The function of the sensor is to convert the relevant parameters of the controlled object into electrical signals and transmit them to the controller.

Engine electronic control system includes fuel injection control, ignition control, idle speed control, air intake control, etc. Chassis single control system includes anti-lock braking control (ABS), anti-skid control, suspension electronic control, transmission electronic control, cruise control and so on. Body electronic control includes airbag control, air conditioning system control, electronic instrument and anti-theft system control.

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