What is the automotive thermostat seat assembly
The automotive thermostat seat assembly is an important component in the engine cooling system. It is mainly used to control the flow path of the coolant, achieve the switching between large and small circulation, and ensure that the engine maintains a reasonable temperature under different operating conditions.
Core function
Water temperature control is achieved by adjusting the coolant flow to the radiator or directly returning it to the engine. When the water temperature is lower than the set value, the coolant circulates through the bypass hole to prevent the engine from overheating. When the water temperature rises, the valve opens and the coolant enters the radiator to cool it down.
Common types
Youdaoplaceholder0 Wax thermostat : It opens the valve by melting the paraffin wax. It is commonly found in domestic models (such as Jetta, Santana, etc.). It starts to open when the temperature reaches 85℃ and fully opens when it reaches 105 ℃.
Youdaoplaceholder0 Double-valve type : Close the radiator channel at low temperatures and open it at high temperatures to optimize cooling efficiency.
Installation technology
Some brands adopt suspended installation structures and cooling fan systems to enhance stability. For instance, the patented design of Anhui Ruilin Jingke Co., Ltd. optimizes heat dissipation and anti-shake performance through inclined struts and filter screens.
Market situation
The price range of the products is quite wide. For instance, the compatible model of Honda CRV is approximately 50 yuan, while models like Ford Edge are around 45 yuan. When making a purchase, you need to match the specific model of the vehicle (such as FR3Z8575A). It is recommended to choose a regular merchant that supports Alipay transactions.
The function of the automotive thermostat assembly (usually referring to the thermostat) is to automatically adjust the circulation path of the cooling system according to the temperature of the coolant, ensuring that the engine operates at an appropriate temperature.
Specific functions
Youdaoplaceholder0 low-temperature stage : When the coolant temperature drops below 76℃, the thermostat closes the large circulation channel, and the coolant circulates inside the engine (small circulation), helping to heat up quickly.
Youdaoplaceholder0 High-temperature stage : When the temperature exceeds 88℃, the thermostat starts a large circulation, and the coolant flows into the radiator to cool down, preventing engine damage caused by excessively high water temperature.
Youdaoplaceholder0 Temperature control : By adjusting the coolant flow rate and circulation range, the engine is kept at its optimal operating temperature (typically 80-90℃), enhancing power output and reducing energy consumption.
Faults in the car thermostat seat assembly are usually manifested as abnormal water temperature, water leakage or a decline in engine performance, etc., which require timely maintenance. The following are common causes of faults and their solutions:
Leakage problem
The leakage of the thermostat seat is mostly caused by the aging and damage of the base or the sealing parts. New bases or sealing parts need to be replaced. When replacing, the faulty thermostat needs to be removed. Before installing the new thermostat, apply sealant to the water pipe to prevent leakage.
Abnormal water temperature
If the water temperature is too high or too low, it may be that the thermostat is damaged, causing abnormal heat dissipation. It can be judged by the following methods:
Observe the flow of coolant: After starting the engine, check if the coolant is flowing (if it is not flowing, the thermostat may be stuck).
Measure the temperature difference between the water supply and drainage pipes: When the normal water temperature reaches 90℃, the temperatures of the water supply and drainage pipes should be the same. If the temperature difference is large, it may indicate a malfunction of the thermostat.
Maintenance suggestions
If the thermostat seat assembly is damaged, all related components need to be replaced as a whole. For some models (such as Sagitar), the thermostat seat assembly needs to be disassembled, sealed with sealant and reinstalled.
It is recommended to carry out maintenance as soon as possible to avoid a decline in engine performance or even damage due to abnormal water temperature.
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