Thermostat used for engine cooling system and having opposite design structure

Abstract

The invention provides a thermostat used for an engine cooling system and having an opposite design structure. The thermostat comprises a bracket assembly, a valve seat, a valve, sensing portions, a transmission portion and an elastic member; the bracket assembly is connected with the valve seat, the valve is fixed at one certain sensing portion, the valve is in sealing fit with the valve seat, the transmission portion is connected to the sensing portions, one end of the elastic element is matched with a main bracket, and the other end of the elastic member is matched with the valve; and the sensing portions comprise the first sensing portion and the second sensing portion, the first sensing portion and the second sensing portion are connected through the transmission portion and are arranged in opposite directions, and the second sensing portion is fixed on the bracket assembly. According to the technical scheme, stable opening of the thermostat is ensured, collision caused by the fact that cooling liquid impacts the valve is prevented, the fluctuation of the engine temperature is relieved, and the cylinder scuffing failure caused by the too-high temperature of an engine is avoided.

Description

technical field [0001] The invention relates to the field of temperature control, in particular to the technical field of automobile engine cooling systems, in particular to a thermostat with an opposing design structure for an engine cooling system. Background technique [0002] The thermostat is the core component of the engine cooling system. It is composed of induction parts and its components. Through the adjustment of the thermostat, the engine can work at an ideal temperature, which has an important impact on engine life and fuel emission performance. Its development is influenced by automobiles. The industry attaches great importance to it. [0003] The existing wax-type thermostat adopts a single induction part structure. When the engine temperature rises, the valve of the thermostat opens to realize the circulation of the coolant in the cooling system, and reduce the engine temperature through the circulation of the coolant. [0004] When the thermostat valve is j...

AI Technical Summary

Problems solved by technology

[0004] When the thermostat valve is just opened, the coolant flows through the valve rapidly. At this time, the opened valve will be impacted by the coolant axially and the opening height will be reduced rapidly. This phenomenon will affect the normal flow of the coolant, resulting in short-term Insufficient flow of internal coolant causes large fluctuations in engine temperature. In severe cases, the axial impact force will cause the valve to close quickly. At this time, the valve and valve seat will continuously collide in a short period of time, causing the thermostat to vibrate and make abnormal noise. This phenomenon not only affects the life of the thermostat, but also causes abnormal vibration of the engine.

[0005] In addition, when the performance of the thermostat with a single induction structure fails, the engine temperature will be too high, resulting in cylinder failure

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