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Title:
VARIABLE DISPLACEMENT VANE PUMP WITH VARIABLE TARGET REGULATOR
Document Type and Number:
Japanese Patent JP2005133716
Kind Code:
A
Abstract:

To provide a variable displacement vane-type fluid pump which permits improved regulation of the pump discharge such that the pump can meet the various requirements of lubrication for an internal combustion engine at all speeds with minimized use of power.

The vane pump may use both hydrostatic and mechanical actuators to control the position of its containment ring or eccentric ring and hence, regulate the output of the pump. According to yet another aspect, to prevent inlet flow restriction or cavitation, a valve may be provided to permit some of the pump output or discharge flow to bleed into the pump inlet to provide needed velocity and energy to the fluid flow into the pump inlet. The vane pump is a system for lubrication of an engine using a fixed displacement pump for providing an engine speed input for opening a second main vane-type oil pump and maintaining a target oil pressure in the oil pressure circuit. A solenoid valve is used for venting output of the fixed displacement pump to create a second target oil pressure characteristic or curve when desired.


Inventors:
Hunter, Douglas G.
Haase, Thomas
Application Number:
JP2004000296144
Publication Date:
May 26, 2005
Filing Date:
October 08, 2004
Export Citation:
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Assignee:
BORGWARNER INC
International Classes:
F01M1/02; F01C11/00; F01C21/08; F01M1/16; F01M1/20; F04C2/10; F04C2/344; F04C11/00; F04C14/22; F04C14/26; F16N13/20; (IPC1-7): F01M1/02; F01M1/16; F01M1/20; F04C11/00; F04C15/04
Domestic Patent References:
JP2003201976A
JPH0599163A
JPS60185082A
Attorney, Agent or Firm:
社本 一夫
増井 忠弐
小林 泰
千葉 昭男
富田 博行
内田 博