What is automotive thermostat electronics
The automotive electronic thermostat is a thermostat that is precisely controlled by an electronic control unit (ECU) and sensors. It can not only control the circulation path and flow rate of the coolant by mechanical means, but also has intelligent electronic control opening function. The electronic thermostat has integrated heating elements, which are controlled by the engine control module (ECM) to achieve precise adjustment of the coolant temperature.
Working principle
mechanical opening function : when the coolant temperature reaches about 103℃, the paraffin wax inside the electronic thermostat will push the valve to open due to thermal expansion, so that the coolant can be circulated rapidly, and the engine can quickly reach the best working temperature .
electronic control open function : the engine control module will comprehensively analyze the engine load, speed, speed, intake air and coolant temperature and other signals, and then provide 12V voltage to the heating element of the electronic thermostat, so that the coolant around it will rise, thus changing the opening time of the thermostat. Even in the cold start state, the electronic thermostat can work, and the coolant temperature is controlled in the range of 80 to 103 ° C. If the coolant temperature exceeds 113 ° C, the control module continuously supplies power to the heating element to ensure that the engine does not overheat .
Difference from traditional thermostat
Electronic thermostat has the following advantages over traditional thermostat:
precise control : can adjust the coolant flow path in real time according to the working state of the engine and environmental conditions, improve the thermal efficiency of the engine, reduce energy consumption and emissions, and extend the service life of the engine .
Intelligent regulation : precise temperature control through electronic control units and sensors to avoid overheating or undercooling .
strong adaptability : can maintain the best working temperature of the engine under different working conditions, to ensure that the engine can run efficiently under different working conditions .
The main function of automotive electronic thermostat is to accurately regulate the temperature of the engine by electronically controlling the circulation path and flow rate of the coolant to ensure that the engine can work in the appropriate temperature range under different working conditions .
The working principle of electronic thermostat
The electronic thermostat is turned on and off by means of the Engine control module (ECM). ECM collects signals such as engine load, speed, speed, intake air temperature and coolant temperature, and analyzes them. When needed, the ECM will provide 12V operating voltage to the electronic thermostat heating element to heat up the coolant around it, thus changing the opening time of the thermostat. Even in the cold working condition, the electronic thermostat can also work through the electronic control function to control the coolant temperature in the range of 80℃ to 103℃ .
Advantages of electronic thermostat over traditional thermostat
accurate control : the electronic thermostat can control the opening of the thermostat more accurately according to the water temperature change from the engine computer through the water temperature sensor. Compared with the traditional thermostat, which relies on the coolant temperature to control the thermostat, the electronic thermostat can adjust the engine temperature more accurately .
adapt to different working conditions : the electronic thermostat can automatically adjust the circulation path and flow of the coolant according to the load and working conditions of the engine, to ensure that the engine can run efficiently under different working conditions.
energy saving and emission reduction : by precisely controlling the coolant temperature, the electronic thermostat can improve the thermal efficiency of the engine, reduce fuel consumption and harmful gas emissions, is conducive to energy saving and environmental protection .
Practical application case
The electronically controlled engine cooling system used in the Volkswagen Audi APF(1.6L in-line 4-cylinder) engine, the coolant temperature regulation, coolant circulation, cooling fan operation are determined by the engine load and controlled by the engine control unit. Such systems improve fuel economy and reduce emissions at partial load.
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