EP1087138A3 - Pump unit with two internal gear pumps - Google Patents

Pump unit with two internal gear pumps Download PDF

Info

Publication number
EP1087138A3
EP1087138A3 EP00117422A EP00117422A EP1087138A3 EP 1087138 A3 EP1087138 A3 EP 1087138A3 EP 00117422 A EP00117422 A EP 00117422A EP 00117422 A EP00117422 A EP 00117422A EP 1087138 A3 EP1087138 A3 EP 1087138A3
Authority
EP
European Patent Office
Prior art keywords
drive shaft
gear pumps
internal gear
internal
pump unit
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
EP00117422A
Other languages
German (de)
French (fr)
Other versions
EP1087138B1 (en
EP1087138A2 (en
Inventor
Derek John Pelly
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke AG
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 Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP1087138A2 publication Critical patent/EP1087138A2/en
Publication of EP1087138A3 publication Critical patent/EP1087138A3/en
Application granted granted Critical
Publication of EP1087138B1 publication Critical patent/EP1087138B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F04C14/06—Control of, monitoring of, or safety arrangements for, machines, pumps or pumping installations specially adapted for stopping, starting, idling or no-load operation
    • 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
    • F04C2270/00—Control; Monitoring or safety arrangements
    • F04C2270/56—Number of pump/machine units in operation

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Details And Applications Of Rotary Liquid Pumps (AREA)

Abstract

Die Erfindung betrifft ein Innenzahnradpumpen umfassendes Pumpenaggregat, insbesondere für das Schmiersystem einer Brennkraftmaschine, wobei zumindest zwei gesondert angeordnete Innenzahnradpumpen mit gleichachsigen, in Antriebsverbindung stehenden, außenverzahnten Innenrotoren ausgerüstet sind und einer der Innenrotoren mit einer Einrichtung zur gesteuerten / geregelten Unterbrechung der Antriebsverbindung ausgebildet ist, und wobei diese Einrichtung einen in einer Ausnehmung des Innenrotors gegen die Kraft einer Feder verschiebbar geführten und mit einem Drehanschlag einer Antriebswelle zusammenwirkenden Sperrbolzen umfaßt, der von der Antriebswelle her mit Pumpendruck beaufschlagt wird und bei ausreichend hohem Pumpendruck die Antriebsverbindung unterbricht. Erfindungsgemäß ist in die im Außenumfang des Innenrotors mündende Ausnehmung auf der der Antriebswelle abgewandten Seite des Sperrbolzens ein Druckentlastungsventil eingesetzt. Dabei kann sich die den Sperrbolzen in Richtung zur Antriebswelle verschiebende Feder am als Rückschlagventil ausgebildeten Druckentlastungsventil abstützen.

Figure 00000001
The invention relates to a pump unit comprising internal gear pumps, in particular for the lubrication system of an internal combustion engine, at least two separately arranged internal gear pumps being equipped with coaxial, externally toothed internal rotors in drive connection and one of the internal rotors being designed with a device for controlled / regulated interruption of the drive connection, and wherein this device comprises a locking pin which is guided in a recess in the inner rotor against the force of a spring and cooperates with a rotary stop of a drive shaft, which is acted upon by pump pressure from the drive shaft and interrupts the drive connection when the pump pressure is sufficiently high. According to the invention, a pressure relief valve is inserted into the recess opening in the outer circumference of the inner rotor on the side of the locking bolt facing away from the drive shaft. The spring displacing the locking pin in the direction of the drive shaft can be supported on the pressure relief valve designed as a check valve.
Figure 00000001
EP00117422A 1999-09-25 2000-08-11 Pump unit with two internal gear pumps Expired - Lifetime EP1087138B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19945922 1999-09-25
DE19945922A DE19945922A1 (en) 1999-09-25 1999-09-25 Internal gear pumps comprehensive pump unit

Publications (3)

Publication Number Publication Date
EP1087138A2 EP1087138A2 (en) 2001-03-28
EP1087138A3 true EP1087138A3 (en) 2002-07-10
EP1087138B1 EP1087138B1 (en) 2003-10-15

Family

ID=7923244

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00117422A Expired - Lifetime EP1087138B1 (en) 1999-09-25 2000-08-11 Pump unit with two internal gear pumps

Country Status (2)

Country Link
EP (1) EP1087138B1 (en)
DE (2) DE19945922A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10059423A1 (en) * 2000-11-30 2002-06-13 Bosch Gmbh Robert Device for conveying liquids, in particular fuel
DE102004024728B3 (en) * 2004-05-19 2006-03-30 Audi Ag Switching device for multistage oil pump has a running wheel mounted on drive shaft so that it can be locked by switching device
CN105179914B (en) * 2015-10-30 2017-09-26 浙江钱江摩托股份有限公司 A kind of lubricating oil pump
US10236746B2 (en) 2015-12-15 2019-03-19 Regal Beloit America, Inc. Electric machine, lock and associated method
US10711795B2 (en) 2016-07-27 2020-07-14 Regal Beloit America, Inc. Cover assembly, blower assembly and associated method

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6067793A (en) * 1983-09-24 1985-04-18 Sumitomo Electric Ind Ltd Variable volume internal gear pump
DE4134219A1 (en) * 1990-10-29 1992-04-30 Volkswagen Ag Gear tooth pump with variable volumetric flow - has additional gears which are disconnected from driving shaft as pressure rises
DE19620700A1 (en) * 1996-05-23 1997-11-27 Iav Motor Gmbh Internal combustion engine axial gear lubricant pump
EP0989303A1 (en) * 1998-09-22 2000-03-29 Automobiles Peugeot Lubrication pump for an internal combustion engine

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6067793A (en) * 1983-09-24 1985-04-18 Sumitomo Electric Ind Ltd Variable volume internal gear pump
DE4134219A1 (en) * 1990-10-29 1992-04-30 Volkswagen Ag Gear tooth pump with variable volumetric flow - has additional gears which are disconnected from driving shaft as pressure rises
DE19620700A1 (en) * 1996-05-23 1997-11-27 Iav Motor Gmbh Internal combustion engine axial gear lubricant pump
EP0989303A1 (en) * 1998-09-22 2000-03-29 Automobiles Peugeot Lubrication pump for an internal combustion engine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 009, no. 209 (M - 407) 27 August 1985 (1985-08-27) *

Also Published As

Publication number Publication date
EP1087138B1 (en) 2003-10-15
DE19945922A1 (en) 2001-03-29
EP1087138A2 (en) 2001-03-28
DE50004060D1 (en) 2003-11-20

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