Title:
POWER STEERING PUMP PROVIDED WITH VACUUM PUMP
Document Type and Number:
Japanese Patent JPS61222857
Kind Code:
A
Abstract:
PURPOSE:To make it possible to stably supply lubrication oil into a vacuum pump, by using hydraulic oil in a power steering device as the lubrication oil of the vacuum pump. CONSTITUTION:Hydraulic oil fed from the outside flows into a power steering pump through a suction port 26, then into a hydraulic chamber 35 in a control valve 4 through a discharge port formed in a side plate 23 after being pressurized, and is discharged from a hydraulic oil discharge port 36. A part of hydraulic oil which is pressurized by a PS pump 3 flows into a high pressure chamber 29, and thereafter, flows into a low pressure chamber 37, after depressing a spool 28 in a relief valve 5. A part of hydraulic oil having flown into the low pressure chamber 37 is again sucked into the PS pump 3 through its suction port 27, and the remaining part of the hydraulic oil is fed into a pump cavity 43 in a vacuum pump 2 through an oil passage 47 formed in a common side plate 14, and severs as lubrication oil in a vacuum pump 2.
Inventors:
MURATA NAKAHITO
SAKAI TAKESHI
SAKAI TAKESHI
Application Number:
JP6719085A
Publication Date:
October 03, 1986
Filing Date:
March 28, 1985
Export Citation:
Assignee:
NIPPON DENSO CO
International Classes:
B62D5/07; B60R17/00; B60T17/00; B60T17/02; F04C11/00; F04C13/00; F04C25/02; (IPC1-7): B60R17/00; B60T17/02; B62D5/07; F04C11/00; F04C13/00; F04C25/02
Attorney, Agent or Firm:
Yusaku Goto