Inner oil sump with bimetallic-strip temperature control structure

Abstract

The invention discloses an inner oil sump with a bimetallic-strip temperature control structure. The inner oil sump is characterized by comprising a shell and a bimetallic strip assembly, wherein an oil draining hole is formed in the shell; at normal temperature, the oil draining hole is closed by the bimetallic strip assembly; and when heated, the bimetallic strip assembly is subjected to bendingdeformation so as to open the oil draining hole. The inner oil sump disclosed by the invention has the beneficial effects that less components are adopted, the mounting is quick, and the cost is low;when the temperature of engine oil rises to the preset temperature, the oil draining hole is opened by the bimetallic strip assembly; the interflow of the engine oil in the inner oil sump and that inan outer oil sump is achieved; all the engine oil participates in circulation; the normal running of an engine is guaranteed; and the engine oil is prevented from cracking too quickly.

Description

technical field [0001] The invention relates to the technical field of automobile engines, in particular to an inner oil pan with a bimetal sheet temperature control structure. Background technique [0002] As fuel consumption and emission regulations become more and more stringent, various automobile companies have adopted new technologies on engines to meet regulatory requirements. For example, in terms of economy, they have adopted EGR technology, Atkinson-Miller cycle or full MAP control PCJ technology etc. As we all know, when the car starts cold, due to the high viscosity of the engine oil, the friction resistance between the moving parts of the engine is relatively large, resulting in poor engine economy. Fuel consumption will get better. [0003] The Chinese invention patent application with the publication number CN 109139179A discloses a variable oil volume oil pan. When the car is cold started, the lubrication system basically only uses the oil in the inner oil ...

AI Technical Summary

Problems solved by technology

However, the existing thermostat valve is opened by using the volume expansion of paraffin wax, which has the following disadvantages: the structure is complex and easily damaged, and the cost is high; the paraffin wax is installed in the shell, and it takes a certain time for the heat of the engine oil to be transmitted to the inside of the paraffin wax, resulting in insufficient response to the temperature change of the engine oil timely, open lag

Bimetals are widely used in relays, switches, controllers, etc., but in the prior art, bimetals can only be located in the valve body and installed in the medium pipeline, the structure is complex and cannot be directly applied to the open inner oil pan

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