oil temp gauge that work with 2pcs sensors

• 2022-09-01

Why there is one or several oil temperature sensors on the vehicle, which are used to:Generally, the commonly used temperature control meter can only be connected with one sensor, and there are also temperature difference meters that can be connected with two sensors, which can display the temperatures detected by two sensors, and can also display one temperature and the temperature difference with the other.

1. The oil temperature signal of the engine is transmitted to the computer and the oil temperature gauge, and some are also used to control the operation of the fan motor. The function of the oil temperature sensor is to convert the cooling oil temperature into an electrical signal;

2. Correct the fuel injection quantity after inputting the ECU; Increase the fuel injection when the temperature is low;

3. Correct the ignition advance angle; Increase the ignition advance angle at low temperature, and delay it at high temperature to prevent deflagration;

4. Affect the idle speed control valve; At low temperature, the ECU controls the action of the idle control valve according to the oil temperature sensing signal to increase the speed;

5. Affecting the EGR valve.

A oil temperature sensor is responsible for taking the temperature, reporting to ECU, and affecting a series of contents such as fuel injection quantity. One is the oil temperature switch, which provides the reading display for the oil temperature gauge on your instrument panel. Strictly speaking, oil temperature sensors are divided into two categories. No matter which type, its internal structure is a thermistor, and its resistance is between 275 ohm and 6500 ohm. Moreover, the lower the temperature, the higher the resistance value, and the higher the temperature, the lower the resistance value.

The engine oil temperature sensor mainly has two functions: one is the oil supply temperature gauge signal, which is displayed on a meter; the other is the signal to the ECU, which reports different engine oil temperatures so that the ECU can control the fuel injection quantity. The resistance value changes with the temperature. Generally, the higher the temperature, the lower the resistance value. When going downhill, it is still in neutral to save fuel. However, for safety, please do not slide in neutral.