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Machine oil pump and engine

A technology of oil pump and pump body, which is applied in the direction of machine/engine, engine components, engine lubrication, etc. It can solve the problems of high gear noise, oil pump performance and service life, and achieve the effect of improving volumetric efficiency

Active Publication Date: 2018-06-15
WEICHAI POWER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Whether it is the phenomenon of "oil trapping" or "pumping out", it will have a serious impact on the performance and life of the oil pump, and it is easy to cause a lot of noise during the gear meshing process

Method used

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  • Machine oil pump and engine
  • Machine oil pump and engine
  • Machine oil pump and engine

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Embodiment Construction

[0030] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.

[0031] The invention provides an oil pump, such as figure 1 and figure 2 As shown, the oil pump includes an interconnected pump body 1 and a pump cover 2, two transmission shafts 3 installed on the pump body 1 and the pump cover 2, and are fixed on the two transmission shafts 3 and meshed with each other. One of the two sides of the above two gears 4 is provided with a low-pressure chamber, and the other side is provided with a high-pressure chamber. The pump body 1 is provided with an oil inlet 11 connected to the above-mentioned low-pressure chamber. On the pump cover 2 An oil outlet 21 connected to the above-mentioned high-pressure chamber is provided. After entering the low-pressure chamber through the oil inlet 11, the oil is transported into the high-pressure chamber through the meshing rota...

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Abstract

The invention belongs to the field of engine fittings, and discloses a machine oil pump and an engine. The machine oil pump comprises a pump body and a pump cover connected with each other, and two transmission shafts mounted on the pump body and the pump cover; the pump body is provided with an oil inlet; and the pump cover is provided with an oil outlet. The machine oil pump is characterized inthat the pump body comprises a first high-pressure groove communicating to the oil outlet and a first low-pressure groove communicating to the oil inlet; the two sides of the first high-pressure groove communicate with first oil unloading grooves; the two sides of the first low-pressure groove communicate with first oil supplementing grooves; and the first oil unloading grooves and the first oil supplementing grooves both can cover at least one part of areas between gear roots and gear tops of gears relative to projections of the gears on the transmission shafts. Through arrangement of the first oil supplementing grooves and the first oil unloading grooves, the phenomenon of oil trapping and evacuation can be effectively reduced or even prevented, the working performance of the machine oilpump can be improved, the service life of the machine oil pump is prolonged, the noise is reduced, and the capacity efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of engine accessories, in particular to an oil pump and an engine. Background technique [0002] Existing oil pumps have the phenomenon of "oil trapping" and "emptying out" during operation. Specifically, the phenomenon of "oil trapping" refers to the dead volume generated when the oil pump is working, and the size of the dead volume changes, and the oil cannot be discharged or inhale. The "pumping" phenomenon refers to the high-speed rotating oil pump, the oil between the tooth grooves generates a large centrifugal force, and the oil is thrown to the top of the tooth and the inner surface of the tooth cavity of the pump body, and a part of it moves through the oil pump The gap between the parts is lost, so that the pumping phenomenon occurs at the root of the gear. Whether it is the phenomenon of "oil trapping" or "evacuation", it will have a serious impact on the working performance and life of the oil p...

Claims

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Application Information

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IPC IPC(8): F04C2/14F04C15/00F01M1/02
CPCF01M1/02F01M2001/0238F04C2/14F04C15/00
Inventor 张俊龙张威王洪忠么丽丽
Owner WEICHAI POWER CO LTD
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