Water temperature sensor function, working principle and price

The water temperature sensor we are talking about today, I believe many riders are fascinated by it. However, there are also some friends who don't know much about this part. So, what is the function of the water temperature sensor, and what is its working principle and price. Next, let's give you answers one by one.

The function of the water temperature sensor is to convert the cooling water temperature into an electrical signal and feed it back to the car’s on-board computer (ECU). At this time, the ECU will adjust the control unit in time based on the data stored in advance and the feedback signal.Yuan.

1.Corrected fuel injection

When the water temperature is in a low temperature state, it will increase the fuel injection volume of the car.

2.Correct the ignition advance angle

At low temperatures, the ignition advance angle will increase. At high temperatures, in order to prevent further deflagration of the car, the ignition advance angle will be delayed.

3. Affect the idle speed control valve

When it is in a low temperature state, the ECU will control the action of the idle speed control valve according to the water temperature sensor signal to increase the speed.

Water temperature sensorofworking principle

The water temperature sensor contains an NTC thermistor, and this resistance will change with the change of the cooling water temperature, so that the corresponding water level signal can be measured more accurately. Then, according to the deviation from the set signal, the ECU can make a timely judgment on the working condition of the engine, and then correct the fuel injection amount and ignition advance angle of the car.

As for the price, generally speaking, they are relatively cheap, about tens of yuan or so can be bought. But it is best for us to go to formal channels to purchase, after all, there are still many inferior products circulating in the market. Not only is there no good guarantee in terms of quality, but there is also a certain deviation in the sensor. Therefore, in order to avoid these things from happening, we still have to pay attention to it.