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Engine oil pump suitable for SD type, LD type, S type and ZH type diesel engine

A technology for oil pump and diesel engine, applied in the field of oil pump and diesel engine oil pump, can solve the problems of difficult to guarantee surface roughness and flatness, large area of ​​high-pressure oil area, poor sealing performance, etc. Good oil absorption performance, not easy to leak

Inactive Publication Date: 2008-01-30
王尔耕
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The surface roughness and flatness of the joint surface between the pump cover and the pump body of the existing diesel engine oil pump are difficult to ensure, which may easily cause leakage; the high-pressure oil area of ​​the oil pump is large, the sealing performance is not good, and the reliability is poor

Method used

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  • Engine oil pump suitable for SD type, LD type, S type and ZH type diesel engine

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Embodiment Construction

[0013] The best embodiments of the present invention are given below in conjunction with the accompanying drawings to further illustrate the technical solutions of the present invention.

[0014] Referring to Figures 1-3, it can be seen from the figure that the diesel engine oil pump of the present invention includes a pump cover 1 and a pump body 2 fastened together by fasteners, and a rotor passing through the pump cover 1 and the pump body 2 Shaft 3 is located in the inner rotor 4 and outer rotor 5 which are matched with the rotor shaft in the pump body. The pump cover is provided with the pump cover oil inlet and outlet holes 8 and 9, which are in communication with the pump body inlet and outlet oil chambers 12 and 13, and the pump cover for oil inlet and outlet. Cavities 6 and 7, the pump cover inlet and outlet oil passages 10 and 11 that connect the pump cover in and out of the oil cavity hole and the pump cover in and out of the oil cavity respectively; between the pump co...

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Abstract

The invention relates to a diesel engine oil pump, in particular to an oil pump of a diesel engine with a single cylinder, pertaining to the field of diesel engine fittings device. The diesel engine oil pump comprises a pump cap, a pump body, a rotor shaft, an outer rotor, an inner rotor, an input and output oil cavity hole of the pump cap which is positioned on the pump cap is communicated with an input and output cavity of the pump body, an inner cavity of the pump cap input and output cavity, an input and output oil channel of the pump cap, and a sealer positioned between the pump cap and the pump body. The invention is characterized in that the input and output oil channel of the pump cap is an internally communicated and hidden-typed oil channel and the sealer adopts an O-shaped sealing ring to seal. The invention is difficult to leak, has good sealing performance, good oil-absorptive performance, short start-up time for output oil, high volume efficiency and good reliability.

Description

1. Technical field: [0001] The invention relates to an oil pump for a diesel engine, in particular an oil pump for a single-cylinder diesel engine, and belongs to the technical field of diesel engine accessory devices. 2. Background technology: [0002] The surface roughness and flatness of the joint surface between the pump cover and the pump body of the existing diesel engine oil pump are difficult to ensure and easily cause leakage; the high pressure oil area of ​​the oil pump is large, the sealing performance is poor, and the reliability is poor. 3. Summary of the invention: [0003] The purpose of the present invention is to overcome the problems of the above diesel engine oil pump, and provide a new type of diesel engine oil pump with good oil absorption performance, short start-up oil delivery time, high volumetric efficiency and good reliability. [0004] The technical solution of the present invention is as follows: [0005] A diesel engine oil pump includes a pump cove...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F04C2/10F04C15/00
Inventor 王尔耕
Owner 王尔耕
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