JPS57149677A - Flow control valve for power steering device - Google Patents

Flow control valve for power steering device

Info

Publication number
JPS57149677A
JPS57149677A JP56034133A JP3413381A JPS57149677A JP S57149677 A JPS57149677 A JP S57149677A JP 56034133 A JP56034133 A JP 56034133A JP 3413381 A JP3413381 A JP 3413381A JP S57149677 A JPS57149677 A JP S57149677A
Authority
JP
Japan
Prior art keywords
pump
valve
pass
pressure
line
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP56034133A
Other languages
Japanese (ja)
Inventor
Masafumi Nakayama
Setsuyoshi Yanai
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nissan Motor Co Ltd
Original Assignee
Nissan Motor Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Priority to JP56034133A priority Critical patent/JPS57149677A/en
Publication of JPS57149677A publication Critical patent/JPS57149677A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D5/00—Power-assisted or power-driven steering
    • B62D5/06—Power-assisted or power-driven steering fluid, i.e. using a pressurised fluid for most or all the force required for steering a vehicle

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Power Steering Mechanism (AREA)
  • Multiple-Way Valves (AREA)

Abstract

PURPOSE:To reduce the torque to drive a pump, when the steering force is small, by furnishing a throttling means in a by-pass, which is cut off by a spool valve working in compliance with the pressure in the discharge line, and by connceting the ends to the discharge line and the suction side of pump. CONSTITUTION:If the steering force is small and the discharge pressure of a pump 21 is lower than a certain specified value, a spool valve 33 is pressed by a spring 35 to be situated in the position No.1 illustrated. Liquid discharged from the pump 21 flows into a by-pass 40 from the discharge line 22 in an amount set previously, while the rest flows into a control valve 24 in the power steering device 25. The liquid which has flowed into the valve 24 is sent further through a return way 23 and an orifice 32 to converge with the by-pass 40 and returns to the pump 21 through a suction line 26. Accordingly, the pressure produced in the line 22 by throttling action of the valve 24 will decrease, and the throttling action of the orifice 32 in the return way 23 as well as the back pressure of the valve 24 is suppressed low. Thus the torque required to drive the pump 21 can be decreased.
JP56034133A 1981-03-10 1981-03-10 Flow control valve for power steering device Pending JPS57149677A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56034133A JPS57149677A (en) 1981-03-10 1981-03-10 Flow control valve for power steering device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56034133A JPS57149677A (en) 1981-03-10 1981-03-10 Flow control valve for power steering device

Publications (1)

Publication Number Publication Date
JPS57149677A true JPS57149677A (en) 1982-09-16

Family

ID=12405720

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56034133A Pending JPS57149677A (en) 1981-03-10 1981-03-10 Flow control valve for power steering device

Country Status (1)

Country Link
JP (1) JPS57149677A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6212465A (en) * 1985-07-10 1987-01-21 Showa Mfg Co Ltd power steering device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6212465A (en) * 1985-07-10 1987-01-21 Showa Mfg Co Ltd power steering device

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