Driving device for oil pump

Abstract

The invention discloses a driving device for an oil pump. The driving device comprises an inner rotor (1), a crankshaft (2), an outer rotor (3) and an oil pump volute (4). The driving device is characterized in that the inner rotor (1) of the oil pump is arranged on the crankshaft (2) through a positioning surface A and a positioning surface B, the outer rotor (3) is sleeved on the inner rotor (1) in an embedded manner, the oil pump volute (4) is positioned on the outermost side, the positioning surface A and the positioning surface B are used for stopping relative rotation of the crankshaft (2) and the inner rotor (1), the inner rotor (1) of the oil pump can be directly driven to rotate by the crankshaft (2) so that high-pressure oil is delivered, and the maximum fit clearance between a joint surface A and a joint surface B of the crankshaft (2) and the inner rotor (1) is 0.1mm, for example, the fit clearance can range from 0.03mm to 0.1mm. By the aid of the driving device, a transmission system can be simplified, transmission space is saved, a gear and a central shaft of the oil pump are omitted, the production cost of an engine is saved, and the driving device is simple to mount and high in working efficiency.

Description

technical field [0001] The invention belongs to the technical field of internal combustion engines, is a part of the internal combustion engines, and in particular relates to a driving device of an oil pump. Background technique [0002] At present, the drive of the oil pump of the internal combustion engine is mostly driven by gear transmission first, and then drives the oil pump. The transmission system is relatively complicated, the gears are meshed with each other, the assembly is difficult, and the work efficiency is low. Contents of the invention [0003] The present invention aims to solve the problems that the existing internal combustion engine oil pump driving device is driven by gears, the transmission system is complicated, the assembly is difficult, and the working efficiency is low. The purpose is to provide an oil pump driving device with simplified transmission, simple assembly and high working efficiency. [0004] Technical scheme of the present invention...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problems that the existing internal combustion engine oil pump driving device is driven by gears, the transmission system is complicated, the assembly is difficult, and the work efficiency is low. The purpose is to provide an oil pump driving device with simplified transmission, simple assembly and high work efficiency.

Images