Automobile fuel position sensor usually consists of the following main components:

1. Sensing element: The sensing element is the core component of the fuel position sensor, which is used to measure the height of the fuel level in the fuel tank. According to the different types of sensors, the sensor elements can be resistors, capacitors, ultrasonic transmitters and receivers, oscillators and other different types of sensor elements.

2. Float or floating ball: Float or floating ball is an important part of the sensing element and is usually connected with the liquid level in the fuel tank. When the liquid level in the fuel tank changes, the float or floating ball will move up and down, thus changing the output signal of the sensing element.

3. Circuit board: The circuit board of the fuel position sensor is responsible for receiving the signal from the sensing element, and processing and amplifying the signal. The circuit board may also contain calibration circuit, filter circuit and interface circuit to ensure the accuracy and stability of the sensor.

4. Connecting wire or connector: The connecting wire or connector is used to connect the sensor with the electronic control unit of the vehicle and transmit the measured fuel position data to the electronic system of the vehicle for processing and display.

5. Shell: The shell is the external protective structure of the fuel position sensor, which is usually made of high-temperature resistant and corrosion-resistant materials to protect the internal components of the sensor from the external environment.

Generally speaking, the main components of automobile fuel position sensor include sensing element, float or floating ball, circuit board, connecting wire or connector, shell and other components. These components work together to achieve accurate measurement and data transmission of the fuel level in the fuel tank, which provides important support for the fuel management of vehicles. When using and maintaining the fuel position sensor, it is necessary to keep the sensor clean and intact to ensure its normal operation and accuracy.