How To Use The Electric Vehicle Meter Correctly

Electric vehicles have been basically popularized in China. Instruments are the basic components of electric vehicles. You know how to use them correctly.

1. Wipe the surface of each electric vehicle meter frequently. On the one hand, it prevents dust and oil from invading the inside of the meter and damages the core of the meter, and on the other hand, it is convenient to observe the dynamics of the meter pointer.

2. Master the relationship between the performance of each instrument and the status indicated by the instrument and the working conditions of the relevant parts of the engine, so as to judge the working status of the engine and find out the fault location and cause according to the indicated status of the instrument.

3. When the engine is started, it is necessary to observe the dynamics of each instrument, find abnormalities, and deal with them in time; while the engine is running and the car is running, the dynamics of each instrument should also be observed frequently in order to grasp the working conditions of each related system.

4. Instruments with different voltage values shall not be used for each other except the ammeter, so as not to damage the instrument.

5. The sensor performance of electrothermal and electromagnetic instruments is quite different. For example, the resistance value of the variable resistance sensor of the electrothermal fuel gauge decreases with the rise of the oil level in the fuel tank, while the resistance value of the variable resistance sensor of the electromagnetic fuel gauge changes in the opposite direction; the resistance value of the electrothermal oil pressure gauge sensor The variable resistance value decreases with the increase of oil pressure, and the change of the variable resistance value of the electromagnetic oil pressure gauge is just the opposite; the resistance value of the thermistor of the electric heating water temperature gauge sensor is 220 ohms when the water temperature is 50 ℃ , when the water temperature is 115 ℃, it is reduced to 20 ohms, and the thermistor of the electromagnetic water temperature meter sensor, the resistance value is still high when the water temperature is 100 ℃, and the resistance value decreases significantly when the temperature continues to rise. Therefore, electric heating and electromagnetic electric vehicle meters and their sensors should be used together, and should not be used interchangeably or replaced individually.

6. The water temperature meter sensor must be well grounded, and the wire of the sensor must not be grounded or short-circuited, so as not to damage the water temperature meter.

7. When installing the oil pressure sensor, the "↑" mark should be upward, otherwise the accuracy of the oil pressure gauge indication will be reduced.

8. The lower terminal of the electromagnetic fuel gauge should be connected to the sensor, and the upper terminal should be connected to the ignition switch. Otherwise, the pointer always points to "0".