JPS5620792A - Pump device for power steering - Google Patents

Pump device for power steering

Info

Publication number
JPS5620792A
JPS5620792A JP9591979A JP9591979A JPS5620792A JP S5620792 A JPS5620792 A JP S5620792A JP 9591979 A JP9591979 A JP 9591979A JP 9591979 A JP9591979 A JP 9591979A JP S5620792 A JPS5620792 A JP S5620792A
Authority
JP
Japan
Prior art keywords
high speed
power steering
flow
throttle path
path
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.)
Granted
Application number
JP9591979A
Other languages
Japanese (ja)
Other versions
JPS629754B2 (en
Inventor
Tadataka Narumi
Akihiko Sato
Shiro Takeuchi
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.)
Toyoda Koki KK
Original Assignee
Toyoda Koki KK
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 Toyoda Koki KK filed Critical Toyoda Koki KK
Priority to JP9591979A priority Critical patent/JPS5620792A/en
Publication of JPS5620792A publication Critical patent/JPS5620792A/en
Publication of JPS629754B2 publication Critical patent/JPS629754B2/ja
Granted legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C14/00—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations
    • F04C14/24—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves
    • F04C14/26—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations characterised by using valves controlling pressure or flow rate, e.g. discharge valves or unloading valves using bypass channels

Abstract

PURPOSE: To improve further high speed stability by bypassing pressure action of a power steering device, particularly a portion of control flow to this device, to low pressure side by a control nozzle to suppress increase of reduced flow to the minimum limit.
CONSTITUTION: When rotational speed of a pump is further increased as an automobile is shifted to a high speed travelling, a spool valve 43 is displaced to open more widely a bypass path 38. Thus, as shown in the drawing, the secound throttle path 50 corresponds to a limit opening 46, and the first valve chamber 41 communicates to an inner opening 47 only through the first throttle path 49 to reduce pressurized fluid supplied to a power steering device up to a predetermined amount Q2 determined only by the first throttle path 49 as shown by the solid line in the drawing. Thus, in the high speed travelling, a driver can obtain steering reaction provided by the reduction of supplied flow to improve further high speed stability.
COPYRIGHT: (C)1981,JPO&Japio
JP9591979A 1979-07-26 1979-07-26 Pump device for power steering Granted JPS5620792A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9591979A JPS5620792A (en) 1979-07-26 1979-07-26 Pump device for power steering

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9591979A JPS5620792A (en) 1979-07-26 1979-07-26 Pump device for power steering

Publications (2)

Publication Number Publication Date
JPS5620792A true JPS5620792A (en) 1981-02-26
JPS629754B2 JPS629754B2 (en) 1987-03-02

Family

ID=14150678

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9591979A Granted JPS5620792A (en) 1979-07-26 1979-07-26 Pump device for power steering

Country Status (1)

Country Link
JP (1) JPS5620792A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5799469A (en) * 1980-12-08 1982-06-21 Tokai T R W Kk Pressurized oil relief device for power steering
EP0872404A2 (en) * 1997-04-09 1998-10-21 Toyoda Koki Kabushiki Kaisha Flow control device of power steering apparatus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5799469A (en) * 1980-12-08 1982-06-21 Tokai T R W Kk Pressurized oil relief device for power steering
JPH0129752B2 (en) * 1980-12-08 1989-06-13 Tokai Teii Aaru Daburyuu Kk
EP0872404A2 (en) * 1997-04-09 1998-10-21 Toyoda Koki Kabushiki Kaisha Flow control device of power steering apparatus
EP0872404A3 (en) * 1997-04-09 2001-03-21 Toyoda Koki Kabushiki Kaisha Flow control device of power steering apparatus

Also Published As

Publication number Publication date
JPS629754B2 (en) 1987-03-02

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