Traditional Culture Encyclopedia - Traditional virtues - What sensors are there in the car?
What sensors are there in the car?
2. Engine coolant temperature sensor This sensor is located on the coolant expansion tank cover. The resistance of the temperature sensor changes in direct proportion to the coolant temperature, and the sensor sends an adjustment signal to the instrument panel to operate the instrument. The engine coolant temperature is displayed on the instrument panel in the form of display bars, and the highest temperature can reach 12 bar, each bar represents 5 ~ 6 degrees Celsius. When the engine is cold (the temperature is lower than 56 degrees Celsius), only 1 is displayed in the display bar. When the engine is at normal operating temperature, the display bar displays 10 at most; When the engine temperature is too high and the number of display units increases from 1 1 to 12, the alarm indicator on the dashboard will light up and give an alarm. This alarm is very important.
3. Engine oil pressure sensor This sensor is located on the stone side of the engine block and is a normally closed switch. The resistance of the sensor changes in direct proportion to the engine oil pressure, and there is a voltage control instrument with mediation signal in the instrument group. The alarm pressure depends on the engine speed. When the engine speed is less than 500 rpm, the switch is closed. Under the following circumstances, turn on the switch, and turn on the alarm broadcast light to give an alarm while the oil pressure display bar is minimized: 1) When the engine speed is 500 ~ 1500 r/min and the oil pressure is lower than 60kPa; 2) When the engine speed1500 ~ 2000rpm and the oil pressure is lower than 1 10kPa; 3) Engine speed is 2.
In addition, there are other sensors, collision sensors, rain sensors (wipers can work automatically when it rains), light sensors, ambient temperature sensors and so on.
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