EP1283331A1 - Lubricant pump for combustion engine - Google Patents

Lubricant pump for combustion engine Download PDF

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Publication number
EP1283331A1
EP1283331A1 EP02014378A EP02014378A EP1283331A1 EP 1283331 A1 EP1283331 A1 EP 1283331A1 EP 02014378 A EP02014378 A EP 02014378A EP 02014378 A EP02014378 A EP 02014378A EP 1283331 A1 EP1283331 A1 EP 1283331A1
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EP
European Patent Office
Prior art keywords
pump device
suction
gear
pumps
housing
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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
EP02014378A
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German (de)
French (fr)
Other versions
EP1283331B1 (en
Inventor
Hartmut Thiedicke
Joachim Kloss
Bernd Ramler
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.)
Dr Ing HCF Porsche AG
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Dr Ing HCF Porsche AG
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Publication of EP1283331A1 publication Critical patent/EP1283331A1/en
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Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/02—Pressure lubrication using lubricating pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/02—Pressure lubrication using lubricating pumps
    • F01M2001/0207—Pressure lubrication using lubricating pumps characterised by the type of pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/12—Closed-circuit lubricating systems not provided for in groups F01M1/02 - F01M1/10
    • F01M2001/123—Closed-circuit lubricating systems not provided for in groups F01M1/02 - F01M1/10 using two or more pumps

Definitions

  • the invention relates to a pump device for lubricants of an internal combustion engine e.g. the reciprocating piston type according to the preamble of claim 1.
  • a known pump device, FR 848 159, for circulating lubricant in one Internal combustion engine has a pressure pump device and a suction pump device on.
  • the suction pump device is formed by several suction pumps, which are spaced apart and at different suction points of the Internal combustion engine are arranged. To train the suction pumps and how you Drive is accomplished, no information is given in this reference.
  • the Pump device comprises highly effective suction pumps designed as gear pumps, which, because of identical components, to an inexpensive construction contribute.
  • Each gear pump with separate suction points is the Internal combustion engine connected.
  • the one with two intermeshing Gear pump provided two separate in a housing of the gear Gear pump housed chambers that at said suction points are connected. These chambers are separated by an intermediate wall, which in the runs at right angles to the central axes of the gears.
  • the partition is as flat Washer inserted in the axial groove of the gears and works with an inner wall of the Housing sealing together. After all, the partition is one of two Parts of existing glasses run, which parts in one of both central axes of the Gears including the central longitudinal plane are composed.
  • the pump device includes one not shown Pressure pump device and a suction pump device 3, with which the circulation of the Lubricant is ensured in the internal combustion engine.
  • the Pressure pump device is on a first long side and the suction pump device 3 arranged on a second longitudinal side 4 of the crankcase 2.
  • the Suction pump device 3 is formed by at least two suction pumps 5,6, which with Suction devices 7, 8 of the internal combustion engine 1 are connected.
  • the suction pumps 5, 6 are designed as gear pumps 9, 10, each two have intermeshing gears 11, 12 and 13, 14 and next to each other are arranged such that the gears 11 and 13 of the gear pumps 9,10 are aligned coaxially to one another and by means of a drive means 15 work together.
  • Each gear pump, for example. 9 has a housing 16 with an approximately oval basic shape, which is provided on the end faces 17, 18 with housing covers 19, 20. In the housing covers 19, 20, the gear wheels 11, 12 are mounted, the housing 16, the housing cover 19.20 and the gears 11.12 and 13.14 of both gear pumps 9, 10 are essentially identical parts.
  • the drive means 15 is a shaft 21 which with the gears 11 and 13 of the adjacent gear pumps 9, 10 in operative connection stands.
  • the shaft 21 has at its ends 22, 23 external teeth 24, 25 - Fig. 3 -, which cooperate with internal gears 26 and 27 of the gears 11 and 13.
  • every gear pump is e.g. 10 with separate suction points 28 and 29 the suction device 8 connected - Fig. 1 -.
  • the chambers 30 and 31 in the housing 16 are through an intermediate wall 32 separated, which runs at right angles to the central axes 33 and 34 of the gears 13, 14.
  • the intermediate wall 32 is designed as a flat disc and in grooves 35 and 36 of the Gears 13, 14 are used, with free ends 37 and 38 of the intermediate wall 32 Inner wall sections 39 and 40 of the housing 16 cooperate sealingly.
  • partition 32 is designed in the manner of glasses - FIG. 2 - and it exists from symmetrical parts 41, 42, which in one of the two central axes 33 and 34 of the Gears 13,14 including the central longitudinal plane A-A are composed.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Rotary Pumps (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)

Abstract

The device has a pressure pump unit and a suction pump unit with several suction pumps connected to engine suction devices (7,8). Neighboring suction pumps (5) are formed as gear pumps (9) with gears (11) positioned coaxial to each other and connected via a drive shaft (21). The gear pumps contain similar components, e.g. gears (11,12,14), housing (16), and housing cover (19). Two gears in the housing act in separate chambers (30,31), which are connected to suction points (28,29) of the engine.

Description

Die Erfindung betrifft eine Pumpeinrichtung für Schmiermittel einer Brennkraftmaschine z.B. der Hubkolbengattung nach dem Oberbegriff des Patentanspruch 1.The invention relates to a pump device for lubricants of an internal combustion engine e.g. the reciprocating piston type according to the preamble of claim 1.

Eine bekannte Pumpeinrichtung, FR 848 159, für den Schmiermittelumlauf in einer Brennkraftmaschine weist eine Druckpumpeneinrichtung und eine Saugpumpeneinrichtung auf. Die Saugpumpeneinrichtung wird gebildet durch mehrere Saugpumpen, die beabstandet zueinander angeordnet und an verschiedene Absaugstellen der Brennkraftmaschine angeordnet sind. Zur Ausbildung der Saugpumpen und wie ihr Antrieb bewerkstelligt wird, werden in dieser Literaturstelle keine Angaben gemacht.A known pump device, FR 848 159, for circulating lubricant in one Internal combustion engine has a pressure pump device and a suction pump device on. The suction pump device is formed by several suction pumps, which are spaced apart and at different suction points of the Internal combustion engine are arranged. To train the suction pumps and how you Drive is accomplished, no information is given in this reference.

Es ist daher Aufgabe der Erfindung eine Pumpeinrichtung für Schmiermittel einer Brennkraftmaschine zu schaffen, die sich durch gute Funktion und einfache Bauweise auszeichnet.It is therefore an object of the invention to provide a pumping device for lubricants To create internal combustion engine, which is characterized by good function and simple construction distinguished.

Nach der Erfindung wird diese Aufgabe durch die Merkmale des Patentanspruchs 1 gelöst. Weitere, die Erfindung ausgestaltende Merkmale, sind in den Unteransprüchen enthalten.According to the invention, this object is achieved by the features of patent claim 1 solved. Further features embodying the invention are in the subclaims contain.

Die mit der Erfindung hauptsächlich erzielten Vorteile sind darin zu sehen, dass die Pumpeinrichtung hochwirksame als Zahnradpumpen ausgebildete Saugpumpen umfasst, die, weil baugleiche Bauteile aufweisend, zu einer kostengünstigen Konstruktion beitragen. Dabei ist jede Zahnradpumpe mit voneinander getrennten Absaugstellen der Brennkraftmaschine verbunden. Außerdem weist die mit zwei miteinander kämmenden Zahnräder versehene Zahnradpumpe zwei voneinander getrennte in einem Gehäuse der Zahnradpumpe untergebrachte Kammern auf, die an besagte Absaugstellen angeschlossen sind. Diese Kammern sind durch eine Zwischenwand getrennt, die im rechten Winkel zu Mittelachsen der Zahnräder verläuft. Die Zwischenwand ist als ebene Scheibe in axiale Nute der Zahnräder eingesetzt und arbeitet mit einer Innenwand des Gehäuses dichtend zusammen. Schließlich ist die Zwischenwand nach Art einer aus zwei Teilen bestehenden Brille ausgeführt, welche Teile in einer beide Mittelachsen der Zahnräder einschließenden Mittellängsebene zusammengesetzt sind.The main advantages achieved with the invention are that the Pump device comprises highly effective suction pumps designed as gear pumps, which, because of identical components, to an inexpensive construction contribute. Each gear pump with separate suction points is the Internal combustion engine connected. In addition, the one with two intermeshing Gear pump provided two separate in a housing of the gear Gear pump housed chambers that at said suction points are connected. These chambers are separated by an intermediate wall, which in the runs at right angles to the central axes of the gears. The partition is as flat Washer inserted in the axial groove of the gears and works with an inner wall of the Housing sealing together. After all, the partition is one of two Parts of existing glasses run, which parts in one of both central axes of the Gears including the central longitudinal plane are composed.

In der Zeichnung wird ein Ausführungsbeispiel der Erfindung gezeigt, das nachstehend näher beschrieben ist.In the drawing, an embodiment of the invention is shown, the following is described in more detail.

Es zeigen

Fig. 1
eine Teillängsschnitt durch eine Pumpeinrichtung für Schmiermittel einer Brennkraftmaschine,
Fig. 2
einen Schnitt nach der Linie II-II der Fig.1 und
Fig. 3
einen Schnitt nach der Linie III-III der Fig.1.
Show it
Fig. 1
a partial longitudinal section through a pump device for lubricants of an internal combustion engine,
Fig. 2
a section along the line II-II of Fig.1 and
Fig. 3
a section along the line III-III of Fig.1.

Von einer nicht näher dargestellten Brennkraftmaschine 1 der Hubkolbenbauart ist lediglich ein Teil eines Kurbelgehäuses 2 angedeutet, an dem eine Pumpeinrichtung vorgesehen ist. Die Pumpeinrichtung umfasst eine nicht gezeigte Druckpumpeneinrichtung und eine Saugpumpeneinrichtung 3, mit denen der Umlauf des Schmiermittels in der Brennkraftmaschine sichergestellt wird. Die Druckpumpeneinrichtung ist an einer ersten Längsseite und die Saugpumpeneinrichtung 3 an einer zweiten Längsseite 4 des Kurbelgehäuses 2 angeordnet. Die Saugpumpeneinrichtung 3 wird durch wenigstens zwei Saugpumpen 5,6 gebildet, die mit Absaugeinrichtungen 7,8 der Brennkraftmaschine 1 verbunden sind.From an internal combustion engine 1 of the reciprocating type, not shown only a part of a crankcase 2 indicated, on which a pump device is provided. The pump device includes one not shown Pressure pump device and a suction pump device 3, with which the circulation of the Lubricant is ensured in the internal combustion engine. The Pressure pump device is on a first long side and the suction pump device 3 arranged on a second longitudinal side 4 of the crankcase 2. The Suction pump device 3 is formed by at least two suction pumps 5,6, which with Suction devices 7, 8 of the internal combustion engine 1 are connected.

Die Saugpumpen 5,6 sind als Zahnradpumpen 9,10 ausgebildet, die jeweils zwei ineinander kämmende Zahnräder 11,12 und 13,14 aufweisen und neben einander angeordnet sind, dergestalt, dass die Zahnräder 11 und 13 der Zahnradpumpen 9,10 koaxial zueinander ausgerichtet sind und mittels eines Antriebsmittels 15 zusammenarbeiten. Jede Zahnradpumpe bspw. 9 besitzt ein Gehäuse 16 mit einer etwa ovalen Grundform, das an Stirnseiten 17,18 mit Gehäusedeckeln 19,20 versehen ist. In den Gehäusedeckeln 19,20 sind die Zahnräder 11,12 gelagert, wobei das Gehäuse 16, die Gehäusedeckel 19,20 und die Zahnräder 11,12 und 13,14 beider Zahnradpumpen 9,10 im Wesentlichen baugleiche Teile sind. Das Antriebsmittel 15 ist eine Welle 21, die mit den Zahnrädern 11 und 13 der benachbarten Zahnradpumpen 9,10 in Wirkverbindung steht. Die Welle 21 weist an ihren Enden 22,23 Außenverzahnungen 24,25 auf - Fig. 3 -, die mit Innenverzahnungen 26 und 27 der Zahnrädern 11 und 13 zusammenarbeiten.The suction pumps 5, 6 are designed as gear pumps 9, 10, each two have intermeshing gears 11, 12 and 13, 14 and next to each other are arranged such that the gears 11 and 13 of the gear pumps 9,10 are aligned coaxially to one another and by means of a drive means 15 work together. Each gear pump, for example. 9 has a housing 16 with an approximately oval basic shape, which is provided on the end faces 17, 18 with housing covers 19, 20. In the housing covers 19, 20, the gear wheels 11, 12 are mounted, the housing 16, the housing cover 19.20 and the gears 11.12 and 13.14 of both gear pumps 9, 10 are essentially identical parts. The drive means 15 is a shaft 21 which with the gears 11 and 13 of the adjacent gear pumps 9, 10 in operative connection stands. The shaft 21 has at its ends 22, 23 external teeth 24, 25 - Fig. 3 -, which cooperate with internal gears 26 and 27 of the gears 11 and 13.

Um eine Kurbelkammer- und eine Nebenstellenabsaugung in der Brennkraftmaschine 1 zu bewerkstelligen, ist jede Zahnradpumpe z.B. 10 mit getrennten Absaugstellen 28 und 29 der Absaugeinrichtung 8 verbunden - Fig. 1 -. Hierzu sind in dem Gehäuse 16 zwei getrennte Kammern 30 und 31 vorgesehen, die an die Absaugstellen 28 und 29 angeschlossen sind und in denen die Zahnrädern 13,14 der Zahnradpumpe 10 wirksam sind. Die Kammern 30 und 31 in dem Gehäuse 16 sind durch eine Zwischenwand 32 getrennt, die im rechten Winkel zu Mittelachsen 33 und 34 der Zahnräder 13,14 verläuft. Die Zwischenwand 32 ist als eine ebene Scheibe ausgebildet und in Nute 35 und 36 der Zahnräder 13,14 eingesetzt, wobei freie Enden 37 und 38 der Zwischenwand 32 mit Innenwandabschnitten 39 und 40 des Gehäuses 16 dichtend zusammenarbeite. Schließlich ist Zwischenwand 32 nach Art einer Brille - Fig. 2 - ausgeführt, und sie besteht aus symmetrischen Teilen 41,42, die in einer die beiden Mittelachsen 33 und 34 der Zahnräder 13,14 einschließenden Mittellängsebene A-A zusammengesetzt sind.To a crank chamber and an extension suction in the internal combustion engine 1 every gear pump is e.g. 10 with separate suction points 28 and 29 the suction device 8 connected - Fig. 1 -. For this purpose, there are two in the housing 16 separate chambers 30 and 31 are provided which are connected to the suction points 28 and 29 are connected and in which the gears 13, 14 of the gear pump 10 are effective are. The chambers 30 and 31 in the housing 16 are through an intermediate wall 32 separated, which runs at right angles to the central axes 33 and 34 of the gears 13, 14. The intermediate wall 32 is designed as a flat disc and in grooves 35 and 36 of the Gears 13, 14 are used, with free ends 37 and 38 of the intermediate wall 32 Inner wall sections 39 and 40 of the housing 16 cooperate sealingly. Finally, partition 32 is designed in the manner of glasses - FIG. 2 - and it exists from symmetrical parts 41, 42, which in one of the two central axes 33 and 34 of the Gears 13,14 including the central longitudinal plane A-A are composed.

Claims (10)

Pumpeinrichtung für Schmiermittel einer Brennkraftmaschine z.B. der Hubkolbengattung, umfassend eine Druckpumpeneinrichtung und eine Saugpumpeneinrichtung, welche Saugpumpeneinrichtung mehrere Saugpumpen aufweist, die mit Absaugeinrichtungen der Brennkraftmaschine verbunden sind, dadurch gekennzeichnet, dass benachbarte Saugpumpen (5,6) als an die Absaugeinrichtungen (7,8) angeschlossene Zahnradpumpen (9,10) ausgebildet sind, wovon Zahnräder (11,13) der Zahnradpumpen (9,10) koaxial zueinander angeordnet und unter Zwischenschaltung eines Antriebsmittels (15) miteinander verbunden sind.Pump device for lubricants of an internal combustion engine, for example of the reciprocating piston type, comprising a pressure pump device and a suction pump device, which suction pump device has a plurality of suction pumps which are connected to suction devices of the internal combustion engine, characterized in that adjacent suction pumps (5, 6) are connected to the suction devices (7, 8). Connected gear pumps (9, 10) are formed, of which gear wheels (11, 13) of the gear pumps (9, 10) are arranged coaxially to one another and connected to one another with the interposition of a drive means (15). Pumpeinrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Zahnradpumpen (9,10) im Wesentlichen baugleiche Teile umfassen.Pump device according to claim 1, characterized in that the gear pumps (9, 10) comprise essentially identical parts. Pumpeinrichtung nach Anspruch 2, dadurch gekennzeichnet, dass die baugleichen Teile der Zahnradpumpen (9,10) bspw. durch die Zahnräder (11,12 und 13,14), ein Gehäuse (16) und Gehäusedeckel (19) gebildet werden.Pump device according to claim 2, characterized in that the structurally identical parts of the gear pumps (9, 10) are formed, for example, by the gear wheels (11, 12 and 13, 14), a housing (16) and housing cover (19). Pumpeinrichtung nach Anspruch 1, dadurch gekennzeichnet, dass das Antriebsmittel (15) eine Welle (21 ) ist, die mit den Zahnrädern ( 11,13) der Zahnradpumpen (9,10) in Wirkverbindung steht.Pump device according to claim 1, characterized in that the drive means (15) is a shaft (21) which is operatively connected to the gear wheels (11, 13) of the gear pumps (9, 10). Pumpeinrichtung nach Anspruch 4, dadurch gekennzeichnet, dass die Welle (21) an ihren Enden (21,22) Außenverzahnungen (24,25) besitzt, die mit Innenverzahnungen (26,27) der Zahnräder (11,13) der Zahnradpumpen (9,10) zusammenarbeiten.Pump device according to claim 4, characterized in that the shaft (21) has at its ends (21,22) external toothings (24,25) which with internal toothings (26,27) of the gear wheels (11,13) of the gear pumps (9, 10) work together. Pumpeinrichtung nach Anspruch 1, dadurch gekennzeichnet, dass jede Zahnradpumpe (z.B. 9) mit voneinander getrennten Absaugstellen (28,29) der Absaugeinrichtung (28) Brennkraftmaschine (1) verbunden sind. Pump device according to Claim 1, characterized in that each gear pump (for example 9) is connected to separate suction points (28, 29) of the suction device (28) internal combustion engine (1). Pumpeinrichtung, deren Zahnradpumpe vorzugsweise zwei parallel zueinander angeordnete und in einem Gehäuse arbeitende Zahnräder aufweist nach Anspruch 6, dadurch gekennzeichnet, dass die beiden Zahnräder (11,12) in dem Gehäuse (16) in voneinander getrennten Kammern (30,31) wirksam sind, die an die Absaugstellen (28,29) der Brennkraftmaschine (1) angeschlossen sind.Pump device, the gear pump of which preferably has two gear wheels arranged parallel to one another and working in a housing according to claim 6, characterized in that the two gear wheels (11, 12) are effective in the housing (16) in mutually separate chambers (30, 31), which are connected to the suction points (28, 29) of the internal combustion engine (1). Pumpeinrichtung nach Anspruch 7, dadurch gekennzeichnet, dass die Kammern (30,31) durch eine Zwischenwand (32) getrennt sind, die im rechten Winkel zu Mittelachsen (33,34) der Zahnräder (bspw. 13,14) verläuft.Pump device according to Claim 7, characterized in that the chambers (30, 31) are separated by an intermediate wall (32) which runs at right angles to the central axes (33, 34) of the gear wheels (for example 13, 14). Pumpeinrichtung nach den Ansprüchen 8, dadurch gekennzeichnet, dass die als ebene Scheibe ausgebildet Zwischenwand f32) in Nute (35,36) der Zahnräder (13,14) eingesetzt ist und über freie Enden (37,38) mit Innenwandabschnitten (39,40) des Gehäuses (16) dichtend zusammenarbeitet.Pump device according to claims 8, characterized in that the intermediate wall f32) , which is designed as a flat disk, is inserted into the groove (35, 36) of the gear wheels (13, 14) and has free ends (37, 38) with inner wall sections (39, 40). of the housing (16) works together in a sealing manner. Pumpeinrichtung nach Anspruch 9, dadurch gekennzeichnet, dass die Zwischenwand (32) nach Art einer Brille ausgeführt ist und aus zwei Teilen (41,42) besteht, die einer beide Mittelachsen (33,34) der Zahnräder (13,14) einschließenden Mittellängsebene (A - A) zusammengesetzt sind.Pump device according to claim 9, characterized in that the intermediate wall (32) is designed in the manner of glasses and consists of two parts (41, 42) which form a central longitudinal plane (two central axes (33, 34) of the gears (13, 14)). A - A) are composed.
EP02014378A 2001-08-09 2002-06-28 Lubricant pump for combustion engine Expired - Lifetime EP1283331B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10139267 2001-08-09
DE10139267A DE10139267A1 (en) 2001-08-09 2001-08-09 Pump device for lubricant of an internal combustion engine

Publications (2)

Publication Number Publication Date
EP1283331A1 true EP1283331A1 (en) 2003-02-12
EP1283331B1 EP1283331B1 (en) 2007-06-13

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EP02014378A Expired - Lifetime EP1283331B1 (en) 2001-08-09 2002-06-28 Lubricant pump for combustion engine

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US (1) US20030037759A1 (en)
EP (1) EP1283331B1 (en)
JP (1) JP2003106125A (en)
DE (2) DE10139267A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1613862B1 (en) * 2003-04-16 2010-11-17 O.M.P. Officine Mazzocco Pagnoni S.r.l. Oil and vacuum pumps group for a motor vehicle engine

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR848159A (en) 1938-03-17 1939-10-24 Lubricant pumping device, in particular for internal combustion engines
JPS61150871A (en) * 1984-12-21 1986-07-09 Atsugi Motor Parts Co Ltd Working oil circulating device
US4631009A (en) * 1984-07-18 1986-12-23 Sundstrand Corporation Lubrication scavenge system
US4864988A (en) * 1987-09-04 1989-09-12 Dr. Ing. H.C.F. Porsche Ag Lubricating arrangement for a reciprocating piston internal combustion engine
DE3916528A1 (en) * 1989-05-20 1990-11-22 Porsche Ag Gear pump for lubricating racing car engine - has arrangement of shafts to achieve compact design
JPH03237207A (en) * 1989-10-31 1991-10-23 Isuzu Motors Ltd Lubricating device for engine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR848159A (en) 1938-03-17 1939-10-24 Lubricant pumping device, in particular for internal combustion engines
US4631009A (en) * 1984-07-18 1986-12-23 Sundstrand Corporation Lubrication scavenge system
JPS61150871A (en) * 1984-12-21 1986-07-09 Atsugi Motor Parts Co Ltd Working oil circulating device
US4864988A (en) * 1987-09-04 1989-09-12 Dr. Ing. H.C.F. Porsche Ag Lubricating arrangement for a reciprocating piston internal combustion engine
DE3916528A1 (en) * 1989-05-20 1990-11-22 Porsche Ag Gear pump for lubricating racing car engine - has arrangement of shafts to achieve compact design
JPH03237207A (en) * 1989-10-31 1991-10-23 Isuzu Motors Ltd Lubricating device for engine

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 010, no. 353 (M - 539) 28 November 1986 (1986-11-28) *
PATENT ABSTRACTS OF JAPAN vol. 016, no. 021 (M - 1201) 20 January 1992 (1992-01-20) *

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US20030037759A1 (en) 2003-02-27
DE50210301D1 (en) 2007-07-26
JP2003106125A (en) 2003-04-09
EP1283331B1 (en) 2007-06-13
DE10139267A1 (en) 2003-02-27

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