Gear type engine oil pump

Abstract

The invention provides a gear type engine oil pump which comprises a pump body, a pump cover, a driving shaft, a driven shaft, driving gears and driven gears, wherein the driving shaft and the driven shaft are mounted in shaft holes of the pump body and the pump cover; the driving gears are mounted on the driving shaft; the driven gears are mounted on the driven shaft; the driving gears comprise a first driving gear and a second driving gear of which gear teeth are mutually staggered; the driven gears comprise a first driven gear and a second driven gear of which gear teeth are mutually staggered; the first driving gear is meshed with the first driven gear; the second driving gear is meshed with the second driven gear. Through the adoption of the structure, the first driving gear and the second driving gear as well as the first driven gear and the second driven gear do not conduct synchronous rotation, so that the pressure pulse wave generated when the gears rotate each time can be reduced, and can be reduced to half of the original pressure pulse wave to the maximum.

Description

technical field [0001] The invention relates to a component of an engine lubricating system, in particular to a novel gear type oil pump. Background technique [0002] The gear type oil pump is a kind of positive displacement rotary pump. It has a pair of gears that mesh with each other, one of which is a driving wheel and the other is a driven wheel. Driven by the engine, the driven wheel is installed on the driven shaft. When the driving wheel and the driven wheel rotate, the liquid enters the suction space along the oil suction pipe, is squeezed by two gears along the upper and lower shell walls to meet in the discharge space, and then enters the oil pressure pipe. discharge. The main features of the gear pump are compact structure, small size, light weight and low cost. Since the existing gear pumps generally have N gear teeth, N times of pressure pulse waves will be generated every time the gear rotates. This continuous generation of pressure pulse waves is likely to ...

AI Technical Summary

Problems solved by technology

Since the existing gear pumps generally have N gear teeth, N times of pressure pulse waves are generated every time the gear rotates. This continuous generation of pressure pulse waves is likely to cause the following problems: 1) It is easy to cause damage to subsequent parts, such as Impact the subsequent oil filter; 2) lead to poor lubrication of the parts that need to be lubricated in the future, unable to form effective and balanced lubrication, resulting in abnormal wear; 3) easy to cause abnormal opening of the regulating valve, causing the main oil passage to lack oil for lubrication

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