JPS54116708A - Oil pressure pump - Google Patents

Oil pressure pump

Info

Publication number
JPS54116708A
JPS54116708A JP2430078A JP2430078A JPS54116708A JP S54116708 A JPS54116708 A JP S54116708A JP 2430078 A JP2430078 A JP 2430078A JP 2430078 A JP2430078 A JP 2430078A JP S54116708 A JPS54116708 A JP S54116708A
Authority
JP
Japan
Prior art keywords
pass
port
orifice
pressure
suction
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
JP2430078A
Other languages
Japanese (ja)
Inventor
Minoru Kawabata
Yoshiharu Inaguma
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 JP2430078A priority Critical patent/JPS54116708A/en
Priority to FR7905236A priority patent/FR2418879A1/en
Priority to DE19792907979 priority patent/DE2907979C2/en
Priority to GB7907193A priority patent/GB2015648B/en
Priority to CA322,660A priority patent/CA1134202A/en
Publication of JPS54116708A publication Critical patent/JPS54116708A/en
Pending 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 sucking efficiency by flowing the by-pass flow back to the suction port through the by-pass passage which is formed on the joint surface of two plates provided on the side of the cam ring.
CONSTITUTION: When the number of rotattion of the engine and the delivery increases to rise the pressure on the upstream side of the orifice 39, the spool valve 37 slides resisting to the force of the spring 44 and opens the by-pass port 14. By doing so, a part of the pressurized oil flows on one end of the valve port 36 goes into the by-pass port 14, and the by-pass flow is conducted to the suction port 24 through the by-pass passage 30 which is formed between the pressure plate 15 and the sub-plate 16 and is directly returned to the suction side of the pump chamber 21. By such control of the by-pass flow by the spool valve 37, the pressure difference before and behind the orifice 39 is maintained constant, and the constant rate of prssurized oil is always delivered from the delivery port 40.
COPYRIGHT: (C)1979,JPO&Japio
JP2430078A 1978-03-02 1978-03-02 Oil pressure pump Pending JPS54116708A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP2430078A JPS54116708A (en) 1978-03-02 1978-03-02 Oil pressure pump
FR7905236A FR2418879A1 (en) 1978-03-02 1979-02-28 HYDRAULIC PUMP
DE19792907979 DE2907979C2 (en) 1978-03-02 1979-03-01 Hydraulic pump
GB7907193A GB2015648B (en) 1978-03-02 1979-03-01 Rotary positive-displacement fluid-machines
CA322,660A CA1134202A (en) 1978-03-02 1979-03-02 Hydraulic pump

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2430078A JPS54116708A (en) 1978-03-02 1978-03-02 Oil pressure pump

Publications (1)

Publication Number Publication Date
JPS54116708A true JPS54116708A (en) 1979-09-11

Family

ID=12134309

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2430078A Pending JPS54116708A (en) 1978-03-02 1978-03-02 Oil pressure pump

Country Status (5)

Country Link
JP (1) JPS54116708A (en)
CA (1) CA1134202A (en)
DE (1) DE2907979C2 (en)
FR (1) FR2418879A1 (en)
GB (1) GB2015648B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0088811B1 (en) * 1982-03-13 1985-07-31 Vickers Systems GmbH Sliding vane pump, particularly for power steering
JPS60203579A (en) * 1984-03-29 1985-10-15 Honda Motor Co Ltd Power steering system for car
CS260235B1 (en) * 1986-10-21 1988-12-15 Jiri Rybnicek Positive-displacement sliding-vane pump

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3125028A (en) * 1964-03-17 rohde
US2827854A (en) * 1953-03-16 1958-03-25 New York Air Brake Co Variable speed pump with non-graduating by-pass valve control
US2782718A (en) * 1955-05-04 1957-02-26 Vickers Inc Speed-compensated flow control
USRE27241E (en) * 1970-02-24 1971-12-14 Porting for balanced hydraulic roller pump
US3671143A (en) * 1970-11-05 1972-06-20 Trw Inc Flat side valve for pressure balanced power steering pump with improved aspirator action
US3738784A (en) * 1970-12-17 1973-06-12 Trw Inc Pump housing for use with top mounted or remote mounted reservoirs
US3806273A (en) * 1971-10-06 1974-04-23 Trw Inc Pump with means for supercharging the pump inlet

Also Published As

Publication number Publication date
DE2907979A1 (en) 1979-09-06
FR2418879B1 (en) 1982-06-04
CA1134202A (en) 1982-10-26
DE2907979C2 (en) 1985-05-30
GB2015648B (en) 1982-04-28
GB2015648A (en) 1979-09-12
FR2418879A1 (en) 1979-09-28

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