Anti-logic proportional valve and vane pump variable control system

A proportional valve and inverse logic technology, applied in the direction of pump control, lubricating oil control valve, sliding valve, etc., can solve problems such as complex structure, and achieve the effect of simple structure installation, good stability, and easy guarantee of hole precision
CN112303283APending Publication Date: 2021-02-02HUNAN OIL PUMP
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
HUNAN OIL PUMP
Publication Date
2021-02-02

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Abstract

The invention discloses an anti-logic proportional valve and a vane pump variable control system, and relates to the technical field of automobile oil pump displacement control. The anti-logic proportional valve comprises a valve body, a plunger and a spring; a valve hole for accommodating the plunger and the spring is formed in the valve body; the valve body is provided with a port A, a port P and a port T which communicate with the valve hole; a first annular oil groove and a second annular oil groove are formed in the peripheral surface of the plunger; a radial hole communicating with the second annular oil groove is further formed in the plunger; and an axial hole connected with the radial hole and the T port is further formed in the middle of the plunger. The precision of the valve body hole of the proportional valve is easy to guarantee. The invention further relates to a vane pump variable control system using the anti-logic proportional valve. The control system is simple in structure installation, the mechanical valve control structure is regular, and the stability of output pressure of a vane pump is facilitated.
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Description

technical field

[0001] The invention relates to the technical field of displacement control of automobile oil pumps, in particular to a variable control system of an inverse logic proportional valve and a vane pump. Background technique

[0002] Since the operation of the automobile engine oil pump also consumes part of the engine power, the traditional fixed-displacement oil pump is designed according to the demand of the engine oil pump when the engine is hot and idling. Many, when the speed of the engine rises to a certain level, the output flow of the oil pump will be greater than the demand of the engine, and the oil pump pressure limiting valve must be used to bypass the excess oil, resulting in a waste of energy; to reduce the oil pump For power consumption, it is necessary to match the oil supply of the oil pump with the actual oil demand of the engine, and the oil pump with variable displacement control can meet this requirement.

[0003] The Chinese Utility Model ...

Claims

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