Different-position double-cycloid rotor oil pump

Abstract

The invention discloses a different-position double-cycloid rotor oil pump. The different-position double-cycloid rotor oil pump comprises an oil pump body, a pump cover and a rotor. The rotor comprises an inner rotor body and an outer rotor body. The outer rotor body comprises a first outer rotor body and a second outer rotor body which are stacked up and down. The included angle of projections of the first outer rotor body and the second outer rotor body corresponding to concave teeth on the same horizontal plane is 22.5 degrees. The inner rotor body comprises a first inner rotor body and asecond inner rotor body, and the included angle of the first inner rotor body and the second inner rotor body corresponding to convex teeth on the same horizontal plane is 22.5 degrees. Due to the double-oil-cavity design, the oil pump running conditions are greatly improved, and the oil pump performance is greatly improved. A traditional large-flow rotor pump is only provided with a single oil suction cavity and a single oil pressing cavity, in the running process, the oil sucking-in and pressing-out pulse phenomenon is obvious, and engine lubrication is not facilitated. The oil pump is set to be provided with double oil suction cavities and double oil pressing cavities, the pulse phenomenon is reduced and even eliminated, and engine lubrication is better facilitated.

Description

technical field [0001] The invention relates to an oil pump with an eccentric double cycloidal rotor. Background technique [0002] With the wide application of internal combustion engines in many fields, their speed-up and shifting ranges have been greatly expanded, that is, their performance and quality have been greatly improved. Therefore, modern internal combustion engines put forward higher requirements on the performance of the oil pump, the main component of the lubrication system. At present, small and medium-sized internal combustion engines in my country generally use internal meshing cycloidal rotor oil pumps. In the long-term production practice, we found that some parts of the rotor oil pump used in the lubrication system of the internal combustion engine suffer from insufficient lubrication and wear quickly, which leads to a rapid decline in the pumping efficiency of the oil pump, especially the large flow rotor pump. Affect the service life of the oil pump. ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an ectopic double cycloid rotor oil pump, which solves the problem of severe abnormal wear of the oil pump in the prior art, and the large volume of the high-power oil suction chamber leads to the phenomenon of cavitation and low working efficiency. question

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