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Control system for multifunctional mechanical valve control two-level variable displacement pump

A technology of multifunctional machinery and variable displacement pumps, applied in the direction of controlling the pressure of lubricants, etc., can solve the problem of high cost, achieve the effect of simple and practical structure, and reduce costs

Active Publication Date: 2016-03-16
HUNAN OIL PUMP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This technical solution needs to increase the solenoid valve, solenoid valve wiring harness and engine ECU connection, which is costly, and also requires a separate safety valve to protect the engine system and prevent excessive pressure

Method used

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  • Control system for multifunctional mechanical valve control two-level variable displacement pump
  • Control system for multifunctional mechanical valve control two-level variable displacement pump
  • Control system for multifunctional mechanical valve control two-level variable displacement pump

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Embodiment Construction

[0028] Such as figure 1 As shown, the preferred embodiment of the present invention is: a control system of a multifunctional mechanical valve-controlled two-stage variable displacement pump, including a single cavity feedback variable displacement vane pump 1, a pump outlet 2, a main oil passage 3, an oil Bottom shell 4, mechanical valve 5, the single-chamber feedback variable displacement vane pump 1 includes a pump body, the pump body is provided with a rotor cavity, and a rotating pin 11, a vane 12, and a rotor 13 are installed in the rotor cavity , a variable slider 14, a positioning ring 15, a variable spring 16, the variable slider 14 is provided with a spring pressure block, and a pressure feedback cavity 17 is provided between the variable slider 14 and the rotor chamber wall; the mechanical valve 5 It includes a valve sleeve 51, a valve core 52 and a spring 53 installed in the valve sleeve 51, the valve core 52 is a cylindrical structure, and the cylinder wall of the...

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PUM

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Abstract

The invention provides a control system for a multifunctional mechanical valve control two-level variable displacement pump. The control system comprises a single-cavity feedback variable displacement vane pump, a pump outlet, a main oil way, an oil sump and a mechanical valve. The single-cavity feedback variable displacement vane pump comprises a pressure feedback cavity. The mechanical valve comprises a valve sleeve, a valve element and a spring, the valve element is of a cylindrical structure, a first oil groove, a second oil groove and a third oil groove are formed in the wall of the valve element, a radial separation board is arranged in the middle of the valve element to divide the valve element into a spring end and a control end, the first oil groove is located in the spring end, the spring end is provided with the spring, a spring cavity is formed by the spring end and the inner wall of the valve sleeve, the second oil groove and the third oil groove are located in the control end, a control cavity is formed by the control end and the inner wall of the valve sleeve and communicated with the pump outlet all the time, and the spring cavity is communicated with the oil sump all the time. The valve sleeve is provided with a first joint and a second joint which are connected with the pressure feedback cavity and a pressure-limiting oil drainage port connected with the oil sump.

Description

technical field [0001] The invention belongs to the technical field of internal combustion engine lubrication, and in particular relates to a control system of a two-stage variable-displacement vane-type oil pump. Background technique [0002] At present, most of the two-stage variable displacement oil pumps use the switch solenoid valve to power on and off to control the oil pump to realize the primary and secondary variable displacement. This technical solution needs to increase the solenoid valve, solenoid valve wiring harness and engine ECU connection, which is costly, and also requires a separate safety valve to protect the engine system and prevent excessive pressure. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a control system for a multifunctional mechanical valve-controlled two-stage variable displacement pump. The role of the pressure limiting valve. [0004] In order to solve the above technical ...

Claims

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Application Information

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IPC IPC(8): F01M1/16
CPCF01M1/16
Inventor 许仲秋杨福柱
Owner HUNAN OIL PUMP