Engine oil pressure adjusting device of main oil gallery

Abstract

An engine oil pressure adjusting device of a main oil gallery belongs to the technical field of machine designs and comprises an engine inlet air pipe, an engine oil pump, an oil pan, a volume cavity, a moving body, an elastic part, a connecting pipe and an oil return pipe, wherein the moving body is arranged inside the volume cavity and in contact with the inner wall surface of the volume cavity in a seal mode, the back end of the main oil gallery is communicated with the left wall surface of the volume cavity, two ends of the connecting pipe are communicated with the upper wall surface of the volume cavity and the engine air inlet pipe respectively, two ends of the oil return pipe are communicated with the right wall surface of the volume cavity and the lower wall surface of the oil pan, and the lower wall surface of the moving body is connected with the lower wall surface of the volume cavity through the elastic part. When pressure in the engine air inlet pipe is relatively low, the moving body moves upwards, the main oil gallery is communicated with the oil return pipe, and the engine oil pressure of the main oil gallery is reduced; when the pressure in the engine air inlet pipe is relatively high, the moving body moves downwards, the main oil gallery is separated from the oil return pipe, and the engine oil pressure of the main oil gallery is increased. The engine oil pressure adjusting device of the main oil gallery is reasonable in design, simple in structure and applicable to engines with supercharging systems.

Description

Technical field [0001] The invention relates to an oil supply adjustment system in the technical field of mechanical design, in particular to an oil pressure adjustment device for a main oil passage of a supercharged engine. Background technique [0002] During the operation of the engine, oil plays a very important role. It can not only play a role in lubrication, but also play a role in sealing, cooling and buffering. When the engine is working, the speed is very high, and the piston and cylinder wall, connecting rod bearing bush and crankshaft are closely matched. If these matched parts are not sufficiently lubricated, dry friction will occur. The heat generated by dry friction in a short period of time is enough to melt the metal, causing damage to the mechanical parts (piston pulling cylinder, crankshaft holding bush, etc.), so good lubrication must be given to the matching parts in the engine. When the lubricating oil flows to the mating parts, it will form an oil film on ...

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Problems solved by technology

[0003] After searching the prior art documents, it was found that Chinese patent application number 201110044577.9, patent name: engine oil pressure control device, this patented technology provides a kind of engine oil pressure regulating device, which can better realize the regulation of engine oil pressure; The pressure adjustment is staged, and the continuous adjustment of the oil pressure cannot be realized

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