Electro-thermal push bar for electronic thermostat of engine

Abstract

The invention discloses an electro-thermal push bar for an electronic thermostat of an engine, which comprises a push bar body. A heating element is disposed inside the push bar body and comprises a magnesium oxide stick, an electric heating wire and a high-temperature wire, wherein the electric heating wire is wound on the magnesium oxide stick, two ends of the electric heating wire are connected through the high-temperature wire, and the high-temperature wire extends out of the push bar body to be connected with a control power source. The heating element and the push bar inside the electronic thermostat are integrated, so that deformation and even breakage of the heating element under the action of external force is avoided, the service life of the heating element of the electronic thermostat is prolonged, and the engine is guaranteed to operate within a proper temperature range for long. In addition, a conventional sheet heater for the electronic thermostat is changed into a stick heater, and the stick heater compared with the sheet heater has the advantages of no crisping, no deformation and no breakage, is longer in service life and further is simple in structure. Therefore, the internal structure of the electronic thermostat is simpler, and manufacturing cost and difficulty can be reduced.

Description

Technical field [0001] The invention relates to an engine, in particular to a thermostat of the engine, and more particularly to a push rod of the thermostat of the engine. Background technique [0002] As we all know, the thermostat is an automatic temperature adjustment device that controls the engine coolant to perform a large or small cycle to ensure that the engine works within a suitable temperature range. When the temperature of the coolant is lower than the specified value, the thermostat wax in the thermostat is solid, the thermostat valve closes the passage between the engine and the radiator under the action of the spring, and the coolant directly returns to the engine through the water pump. It means that the coolant performs a small cycle in the engine; when the temperature of the coolant reaches the specified value, the thermoparaffin gradually melts into liquid. The thermoparaffin increases in volume in the thermostat and compresses the hose to shrink. The hose shr...

AI Technical Summary

Problems solved by technology

However, since the electric heating sheet directly heats the wax pellets, it is prone to deformation and embrittlement after being heated, and the service life is short. Usually, it needs to be replaced once every six months. If it is not replaced in time, the operating temperature of the engine will be too high, which will affect the service life of the engine. Therefore, how to prolong the service life of the heating element of the electronic thermostat is the key to ensure that the engine works in a suitable temperature range for a long time, and it also has a good market prospect.

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