Stepless adjusting type variable displacement oil pump

A technology of stepless adjustment and displacement machine, which is used in lubrication pumps, mechanical equipment, engine components, etc., and can solve problems such as stepless adjustment devices lacking flow

Inactive Publication Date: 2018-02-23
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is the problem that the existing variable displacement oil pump lacks a stepless adjustment device for flow

Method used

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  • Stepless adjusting type variable displacement oil pump
  • Stepless adjusting type variable displacement oil pump
  • Stepless adjusting type variable displacement oil pump

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Embodiment Construction

[0019] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0020] Such as Figure 1 to Figure 3 As shown, the infinitely adjustable variable displacement oil pump provided by the present invention includes a body 11 and a cover and a casing cover 15 on the body 11. A slide valve 9 is slid inside the body 11, and the oil pump 18 follows the movement of the slide valve 9. Sliding to change the eccentricity, the slide valve 9 divides the inside of the body 11 left and right along the sliding direction to form the first pressure regulating chamber 3 and the second pressure regulating chamber 4, in the second pressure regulating chamber 4, the gap between the slide valve 9 and the body 11 Between compression is provided with adjusting spring 7, slide valve 9 runs through and rotates and is provided with impeller drive shaft 8, and the outer end of impeller drive shaft 8 is connected with the crankshaft of engine by drive shaft sp...

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Abstract

The invention discloses a stepless adjusting type variable displacement oil pump. The stepless adjusting type variable displacement oil pump comprises an engine body and a case arranged on the enginebody. A slide valve is slidably arranged in the engine body. The eccentricity of the oil pump is changed along with sliding of the slide valve. A hydraulic driving device comprises a piston cavity formed in the engine body in a penetrating mode and a piston slidably sleeved with the piston cavity. A flow control system is connected with the engine body and the piston. All real-time flow parametersin the engine body are sequentially fed back to the flow control system. The flow control system controls the hydraulic driving device to drive the piston to move and drive the slide valve to move, so that the displacement of the oil pump is controlled. According to the stepless adjusting type variable displacement oil pump, by controlling the piston to move, the slide valve is driven to move, thus, the eccentricity of the oil pump is changed, then, the displacement of the oil pump is changed, in the oil flow adjusting process, the rotation speed of an engine is considered, the influence of the oil temperature is also considered, and the effect that the optimal oil flow is achieved at any temperature under any rotation speed of an engine lubricating system is ensured.

Description

technical field [0001] The invention relates to an oil pump, in particular to an infinitely adjustable variable displacement oil pump. Background technique [0002] Energy saving and emission reduction is the development trend of modern engines. Engines have different oil flow requirements under different speed conditions. The existing variable displacement oil pumps generally only realize two-stage flow adjustment, which lacks simple and effective The stepless adjustment device cannot guarantee that the engine lubrication system has an optimal oil flow at any speed and temperature. [0003] To sum up, in order to realize stepless adjustment of oil flow, it is necessary to design a variable displacement oil pump with simple structure and high efficiency. Contents of the invention [0004] The technical problem to be solved by the invention is the problem that the existing variable displacement oil pump lacks a stepless adjustment device for flow. [0005] In order to sol...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01M1/16F01M1/02F16N13/20F16N23/00
CPCF01M1/02F01M1/16F01M2001/023F16N13/20F16N23/00
Inventor 刘宇范鲁艳徐小俊曲大为刘艺
Owner JILIN UNIV
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