EP1283331B1 - Lubricant pump for combustion engine - Google Patents

Lubricant pump for combustion engine Download PDF

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Publication number
EP1283331B1
EP1283331B1 EP02014378A EP02014378A EP1283331B1 EP 1283331 B1 EP1283331 B1 EP 1283331B1 EP 02014378 A EP02014378 A EP 02014378A EP 02014378 A EP02014378 A EP 02014378A EP 1283331 B1 EP1283331 B1 EP 1283331B1
Authority
EP
European Patent Office
Prior art keywords
gearwheels
pump arrangement
combustion engine
pumps
gear
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.)
Expired - Lifetime
Application number
EP02014378A
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German (de)
French (fr)
Other versions
EP1283331A1 (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 date
Application filed by Dr Ing HCF Porsche AG filed Critical Dr Ing HCF Porsche AG
Publication of EP1283331A1 publication Critical patent/EP1283331A1/en
Application granted granted Critical
Publication of EP1283331B1 publication Critical patent/EP1283331B1/en
Anticipated expiration legal-status Critical
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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 pumping device for lubricant of an internal combustion engine, e.g. the Hubkolbengattung according to the preamble of claim 1.
  • a known pumping device, FR 848 159 , for the lubricant circulation in an internal combustion engine has a pressure pump device and a suction pump device.
  • the suction pump device is formed by a plurality of suction pumps, which are spaced from each other and arranged at different suction points of the internal combustion engine. To form the suction pumps and how their drive is accomplished, no information is given in this reference.
  • a lubricant pump device which has a plurality of gear pumps whose gears are arranged coaxially with each other. Furthermore, two shafts on which the gears of two gear pumps are arranged, connected by means of a spline connection.
  • the pumping device comprises highly effective designed as gear pumps suction pumps, which, because having identical components contribute to a cost-effective design.
  • each gear pump with separate suction points of Internal combustion engine connected.
  • the gear pump provided with two intermeshing gears has two separate chambers accommodated in a housing of the gear pump, which are connected to said suction points. These chambers are separated by an intermediate wall which runs at right angles to the central axes of the gears.
  • the intermediate wall is used as a flat disc in the axial groove of the gears and works with an inner wall of the Housing sealing together.
  • the intermediate wall is designed in the manner of a two-part goggles, which parts are assembled in a central longitudinal plane including both central axes of the gears.
  • the pumping device comprises a pressure pump device, not shown, and a suction pump device 3 with which the circulation of the lubricant in the internal combustion engine is ensured.
  • the pressure pump device is arranged on a first longitudinal side and the suction pump device 3 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 are connected to suction devices 7, 8 of the internal combustion engine 1.
  • the suction pumps 5,6 are designed as gear pumps 9,10, each having two meshing gears 11,12 and 13,14 and are arranged next to each other, such that the gears 11 and 13 of the gear pumps 9,10 are aligned coaxially with each other 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 end faces 17,18 with housing covers 19,20. In the housing covers 19,20, the gears 11,12 are mounted, wherein the housing 16, the housing cover 19,20 and the gears 11,12 and 13,14 of both gear pumps 9,10 are substantially identical parts.
  • the drive means 15 is a shaft 21 which is in operative connection with the gears 11 and 13 of the adjacent gear pumps 9,10.
  • 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.
  • each gear pump is e.g. 10 with separate suction points 28 and 29 of the suction device 8 - Fig. 1 -.
  • two separate chambers 30 and 31 are provided in the housing 16, which are connected to the suction points 28 and 29 and in which the gears 13,14 of the gear pump 10 are effective.
  • the chambers 30 and 31 in the housing 16 are separated by an intermediate wall 32, which runs at right angles to central axes 33 and 34 of the gears 13,14.
  • the intermediate wall 32 is formed as a flat disc and inserted into grooves 35 and 36 of the gears 13,14, wherein free ends 37 and 38 of the intermediate wall 32 with inner wall portions 39 and 40 of the housing 16 sealingly cooperate.
  • intermediate wall 32 in the manner of a pair of glasses - Fig. 2 - executed, and it consists of symmetrical parts 41,42, which are in one of the two central axes 33 and 34 of the gears 13,14 enclosing central longitudinal plane A-A 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)

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 pumping device for lubricant of an internal combustion engine, e.g. the Hubkolbengattung 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 pumping device, FR 848 159 , for the lubricant circulation in an internal combustion engine has a pressure pump device and a suction pump device. The suction pump device is formed by a plurality of suction pumps, which are spaced from each other and arranged at different suction points of the internal combustion engine. To form the suction pumps and how their drive is accomplished, no information is given in this reference.

Aus der US 4,631,009 A ist eine Schmiermittelpumpeinrichtung bekannt, welche mehrere Zahnradpumpen aufweist, deren Zahnräder koaxial zueinander angeordnet sind. Weiterhin sind zwei Wellen, auf denen die Zahnräder von zwei Zahnradpumpen angeordnet sind, mittels einer Keilverbindung miteinander verbunden.From the US 4,631,009 A a lubricant pump device is known, which has a plurality of gear pumps whose gears are arranged coaxially with each other. Furthermore, two shafts on which the gears of two gear pumps are arranged, connected by means of a spline connection.

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 lubricant of an internal combustion engine, which is characterized by good function and simple design.

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 solved by the features of patent claim 1. Further, the invention ausgestaltende features are included in the subclaims.

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 advantages achieved by the invention are to be seen in the fact that the pumping device comprises highly effective designed as gear pumps suction pumps, which, because having identical components contribute to a cost-effective design. In this case, each gear pump with separate suction points of Internal combustion engine connected. In addition, the gear pump provided with two intermeshing gears has two separate chambers accommodated in a housing of the gear pump, which are connected to said suction points. These chambers are separated by an intermediate wall which runs at right angles to the central axes of the gears. The intermediate wall is used as a flat disc in the axial groove of the gears and works with an inner wall of the Housing sealing together. Finally, the intermediate wall is designed in the manner of a two-part goggles, which parts are assembled in a central longitudinal plane including both central axes of the gears.

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

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 lubricant of an internal combustion engine,
Fig. 2
a section along the line II-II of Figure 1 and
Fig. 3
a section along the line III-III of Figure 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 a non-illustrated internal combustion engine 1 of the reciprocating design, only a part of a crankcase 2 is indicated on which a pumping device is provided. The pumping device comprises a pressure pump device, not shown, and a suction pump device 3 with which the circulation of the lubricant in the internal combustion engine is ensured. The pressure pump device is arranged on a first longitudinal side and the suction pump device 3 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 are connected to suction devices 7, 8 of the internal combustion engine 1.

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 having two meshing gears 11,12 and 13,14 and are arranged next to each other, such that the gears 11 and 13 of the gear pumps 9,10 are aligned coaxially with each other 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 end faces 17,18 with housing covers 19,20. In the housing covers 19,20, the gears 11,12 are mounted, wherein the housing 16, the housing cover 19,20 and the gears 11,12 and 13,14 of both gear pumps 9,10 are substantially identical parts. The drive means 15 is a shaft 21 which is in operative connection with the gears 11 and 13 of the adjacent gear pumps 9,10. 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.In order to accomplish a crank chamber and a branch exhaust in the internal combustion engine 1, each gear pump is e.g. 10 with separate suction points 28 and 29 of the suction device 8 - Fig. 1 -. For this purpose, two separate chambers 30 and 31 are provided in the housing 16, which are connected to the suction points 28 and 29 and in which the gears 13,14 of the gear pump 10 are effective. The chambers 30 and 31 in the housing 16 are separated by an intermediate wall 32, which runs at right angles to central axes 33 and 34 of the gears 13,14. The intermediate wall 32 is formed as a flat disc and inserted into grooves 35 and 36 of the gears 13,14, wherein free ends 37 and 38 of the intermediate wall 32 with inner wall portions 39 and 40 of the housing 16 sealingly cooperate. Finally, intermediate wall 32 in the manner of a pair of glasses - Fig. 2 - executed, and it consists of symmetrical parts 41,42, which are in one of the two central axes 33 and 34 of the gears 13,14 enclosing central longitudinal plane A-A composed.

Claims (8)

  1. A lubricant pump arrangement for an internal-combustion engine, e.g. of the reciprocating piston type, comprising a pressure pump arrangement and a suction pump arrangement, which suction pump arrangement has a plurality of suction pumps which are connected to scavenging arrangements of the internal-combustion engine, wherein adjacent suction pumps (5, 6) are formed as gear pumps (9, 10) which are connected to the scavenging arrangements (7, 8) and of which gearwheels (11, 13) of the gear pumps (9, 10) are co-axially arranged in relation to the another and are connected to one another with the interposition of a drive means (15), characterised in that the drive means (15) is a shaft (21) which is operatively connected to the gearwheels (11, 13) of the gear pumps (9, 10), wherein the ends (21, 22) of the shaft (21) are provided with external teeth (24, 25) which co-operate with internal teeth (26, 27) of the gearwheels (11, 13) of the gear pumps (9, 10).
  2. A pump arrangement according to claim 1, characterised in that the gear pumps (9, 10) substantially comprise structurally like components.
  3. A pump arrangement according to claim 2, characterised in that the structurally like components of the gear pumps (9, 10) are formed e.g. by the gearwheels (11, 12 and 13, 14), a casing (16) and a casing cover (19).
  4. A pump arrangement according to claim 1, characterised in that each gear pump (e.g. 9) is connected to separate scavenging points (28, 29) of the scavenging arrangement (8) of the internal-combustion engine (1).
  5. A pump arrangement, the gear pump of which preferably has two gearwheels arranged parallel to one another and operating in a casing, according to claim 4, characterised in that the two gearwheels (11, 12) are operative in the casing (16) in chambers (30, 31) which are separated from one another and which are connected to the scavenging points (28, 29) of the internal-combustion engine (1).
  6. A pump arrangement according to claim 5, characterised in that the chambers (30, 31) are separated by a partition wall (32) extending at right angles to centre axes (33, 34) of the gearwheels (e.g. 13, 14).
  7. A pump arrangement according to claim 6, characterised in that the partition wall (32), which is formed as a flat plate, is inserted into grooves (35, 36) in the gearwheels (13, 14) and co-operates in a sealed manner via free ends (37, 38) with inner wall portions (39, 40) of the casing (16).
  8. A pump arrangement according to claim 7, characterised in that the partition wall (32) is constructed in the manner of spectacles and consists of two parts (41, 42) which are assembled in a central longitudinal plane (A-A) incorporating the two centre axes (33, 34) of the gearwheels (13, 14).
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
DE10139267A DE10139267A1 (en) 2001-08-09 2001-08-09 Pump device for lubricant of an internal combustion engine
DE10139267 2001-08-09

Publications (2)

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

Family

ID=7694995

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02014378A Expired - Lifetime EP1283331B1 (en) 2001-08-09 2002-06-28 Lubricant pump for combustion engine

Country Status (4)

Country Link
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
US20070059187A1 (en) * 2003-04-16 2007-03-15 O.M.P. Officine Mazzocco Pagnoni S.R.L. Oil and vacuum pumps group for a motor vehicle engine

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE692505C (en) 1938-03-17 1940-06-21 Benzinuhren Ges M B H Deutsche Lubricating oil delivery device 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
DE3729603A1 (en) * 1987-09-04 1989-03-16 Porsche Ag LUBRICATION DEVICE FOR A PISTON PISTON 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
JPH0694805B2 (en) * 1989-10-31 1994-11-24 いすゞ自動車株式会社 Engine lubricator

Also Published As

Publication number Publication date
DE50210301D1 (en) 2007-07-26
JP2003106125A (en) 2003-04-09
US20030037759A1 (en) 2003-02-27
EP1283331A1 (en) 2003-02-12
DE10139267A1 (en) 2003-02-27

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