Oil pump variable displacement device and engine

A technology for oil pumps and engines, which is applied in the direction of pressure lubrication of lubricating pumps and controlling the pressure of lubricants, etc. It can solve the problems of slow response time of variable displacement oil pumps and unfavorable engine stable operation, etc., so as to shorten the operation time of variable displacement, Adjust the response with high time efficiency and promote the effect of adjusting the displacement

Active Publication Date: 2021-10-01
DONGFENG MOTOR GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the actual use process, the response time of the variable displacement operation of the variable displacement oil pump is slow, and the oil pump operates at the maximum displacement state for a long time, which is not conducive to the engine. Stable operation

Method used

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  • Oil pump variable displacement device and engine

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Embodiment Construction

[0027] The following will clearly and completely describe the technical solutions in the embodiments of the present application with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of this application.

[0028] It should be noted that all directional indications in the embodiments of the present application are only used to explain the relative positional relationship and movement conditions among the components in a specific posture. If the specific posture changes, the directional indication also changed accordingly.

[0029] The following disclosure provides many different embodiments or examples for implementing different structures of the present app...

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Abstract

The invention belongs to the technical field of engines, and discloses an oil pump variable displacement device and an engine. The oil pump variable displacement device comprises a variable displacement oil pump, a main oil duct and a pressure valve. An oil pump oil outlet of the variable displacement oil pump is connected with the main oil duct, and the main oil duct is connected with a feedback oil cavity oil inlet of a feedback oil cavity of the variable displacement oil pump; an oil outlet of the oil pump is connected with the feedback oil cavity oil inlet through the pressure valve; and when the pressure value of the oil pump oil outlet is larger than the set conduction pressure of the pressure valve, the pressure valve is conducted. According to the oil pump variable displacement device and the engine, the response time efficiency of executing variable displacement operation can be improved.

Description

technical field [0001] The invention relates to the technical field of oil pumps, in particular to an oil pump displacement device and an engine. Background technique [0002] The variable displacement oil pump is widely used in the engine field. It leads the feedback pressure oil to the feedback oil chamber of the oil pump through the feedback oil circuit, and then the pressure oil pushes the slider to adjust the eccentric distance between it and the oil pump rotor, and adjusts the oil pump. displacement. However, in the actual use process, the response time of the variable displacement operation of the variable displacement oil pump is slow, and the oil pump operates at the maximum displacement state for a long time, which is not conducive to the engine. Stable operation. Contents of the invention [0003] The invention provides a variable displacement device of an oil pump and an engine, which solves the technical problem of slow response time for the variable displac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01M1/02F01M1/16
CPCF01M1/02F01M1/16Y02T10/12
Inventor 欧阳丹施发义刘向晖向飞孟成
Owner DONGFENG MOTOR GRP
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