Rotor type oil pump assembly capable of automatically regulating oil pressure

Abstract

The invention discloses a rotor type oil pump assembly capable of automatically regulating oil pressure. The rotor type oil pump assembly is structurally characterized in that an oil inlet and an oil outlet as well as an oil inlet path and an oil outletpath are arranged on positions, around a transmission shaft hole, of an oil pump cover; an inner rotor is arranged on a position, around a transmission shaft, of an oil pump case; an outer rotor is arranged at the outer side of the inner rotor; when the inner rotor rotates, the outer rotor is driven to rotate; a working cavity is formed between teeth of the inner rotor and teeth of the outer rotor; and a pressure regulating valve is arranged at one end of the oil pump case. When oil pressure is lower than a specified value, an oil relief channel is sealed by a steel ball below a pressure regulating spring; and when the pressure regulating valve is in a closed state, oil directly enters a filter and an engine main oil passage. When oil pressure exceeds the specified value, the steel ball on the oil relief channel is jacked by oil pressure, and a passage is formed between the oil relief channel and a pressure discharge hole; high-pressure oil flows back into an engine body through the pressure discharge hole, so that pressure is reduced; and when the oil pressure is reduced to be lower than the specified value, the pressure regulating spring presses the steel ball to reclose the oil relief channel, so that automatic regulation on oil pressure is realized.

Description

Technical field [0001] The invention belongs to engine parts, and specifically relates to an engine oil pump assembly. Background technique [0002] The oil pump is an indispensable part of the engine. The function of the oil pump is to provide oil for the engine. The oil has a cooling and lubricating effect on the engine. The oil is continuously supplied to the friction surface of each part to reduce the friction and wear of the parts and ensure the normal engine. jobs. During the operation of the engine, the oil supply pressure is generally constant, which brings about some problems. For example, when the engine speed increases, the amount of oil pumped in also increases, and the oil pressure also increases, which may occur due to excessive oil pressure. High and cause oil leakage, even pipeline and filter burst and other problems. At this time, the oil pump is required to adjust the pressure, and the oil pressure must not be too high, otherwise the engine will be damaged. B...

AI Technical Summary

Problems solved by technology

Unfortunately, the current oil pump does not have the function of oil pressure adjustment, often because the oil pressure is too high, the lubricating oil enters the combustion chamber, which not only affects the engine performance due to the combustion quality, but also increases the fuel consumption of the lubricating oil.

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