Flow area adjusting mechanism adopting valve body capable of moving up and down

Abstract

A flow area adjusting mechanism adopting a valve body capable of moving up and down belongs to the technical field of mechanical design, and comprises control cavities (a first control cavity and a second control cavity), the valve body, a filling body, a fixing body, penetration pipes (a first penetration pipe and a second penetration pipe), a spring, a rotating block, a connecting plate, a rotating shaft and a first connecting pipe, wherein the lower section of the valve body is conical; four ribs are arranged on the middle section of the valve body; an external thread is formed on the upper section of the valve body; one end of the first connecting pipe is communicated with the first penetration pipe; the other end of the first connecting pipe is communicated with the exhaust pipe of an engine; one end of a second connecting pipe is communicated with the interior of the second control cavity; the other end of the second connecting pipe is communicated with the exhaust pipe of a turbine. When the pressure difference between two ends of the rotating block is relatively high, the valve body moves upwards to separate a main oil passage from an oil return pipe and ensure that the pressure of engine oil in the main oil passage is increased; when the pressure difference between two ends of the rotating block is relatively low, the valve body moves downwards to communicate the main oil passage with the oil return pipe and ensure that the pressure of the engine oil in the main oil passage is lowered. The flow area adjusting mechanism is reasonable in design, simple in structure, and suitable for optimal design of a mechanical lubrication system.

Description

technical field [0001] The invention relates to a lubricating regulating system in the technical field of mechanical design, in particular to a valve body moving up and down type flow area regulating mechanism suitable for supercharged engines. Background technique [0002] When the engine is working, the speed is very high, and the parts between the piston and the cylinder wall, between the connecting rod bearing bush and the crankshaft are tightly matched. If these matching parts are not fully 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 or even jamming of the parts (piston scuffing, crankshaft pads, etc.), so the matching parts in the engine must be well lubricated. When the lubricating oil flows to the mating part, an oil film will be formed on the friction surface. In order to ensure that the lubricating oil can reach the mating surface smoothly, the engine lubricating oil ...

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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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