WO2004092588A1 - Oil and vacuum pumps group for a motor vehicle engine - Google Patents
Oil and vacuum pumps group for a motor vehicle engine Download PDFInfo
- Publication number
- WO2004092588A1 WO2004092588A1 PCT/IT2003/000243 IT0300243W WO2004092588A1 WO 2004092588 A1 WO2004092588 A1 WO 2004092588A1 IT 0300243 W IT0300243 W IT 0300243W WO 2004092588 A1 WO2004092588 A1 WO 2004092588A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- oil
- pump
- vacuum
- transmission shaft
- gear
- Prior art date
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
- F04C11/00—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
- F04C11/005—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations of dissimilar working principle
-
- 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
- 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
- F04C23/00—Combinations of two or more pumps, each being of rotary-piston or oscillating-piston type, specially adapted for elastic fluids; Pumping installations specially adapted for elastic fluids; Multi-stage pumps specially adapted for elastic fluids
-
- 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
- F04C18/00—Rotary-piston pumps specially adapted for elastic fluids
- F04C18/30—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members
- F04C18/34—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members
- F04C18/344—Rotary-piston pumps specially adapted for elastic fluids having the characteristics covered by two or more of groups F04C18/02, F04C18/08, F04C18/22, F04C18/24, F04C18/48, or having the characteristics covered by one of these groups together with some other type of movement between co-operating members having the movement defined in group F04C18/08 or F04C18/22 and relative reciprocation between the co-operating members with vanes reciprocating with respect to the inner member
-
- 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
- F04C2/00—Rotary-piston machines or pumps
- F04C2/08—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing
- F04C2/10—Rotary-piston machines or pumps of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of internal-axis type with the outer member having more teeth or tooth-equivalents, e.g. rollers, than the inner member
-
- 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
- F04C2220/00—Application
- F04C2220/10—Vacuum
Definitions
- the present invention relates ' to an oil and vacuum pumps group or • a motor ' vehicle engine. More specifically, the invention , relates, preferably but not exclusively, ' to an oil and vacuum pumps group for an endothermic engine for heavy motor vehicles, such as buses, trucks ,and the like, and/or for medium-high powered"motor vehicles.
- the invention also relates to a method ' for assembling ah oil and vacuum pumps group in accordance with the present invention and to a motor vehicle engine comprising such an oil and vacuum pumps group.
- the engines of motor vehicles typically comprise an oil pump, adapted to pump pressurised oil for lubricating the engine, and a vacuum pump, adapted to provide for .
- the oil pump and the vacuum pump are units which are structurally independent from each other and with respect to the engine block; .such units are fitted on respective transmission- shafts which are . driven into rotation separately through respective and distinct actuation members (for example, the oil pump can be driven by the crankshaft of the engine and the vacuum pump can be driven by a camshaft) .
- the transmission shafts of the. oil pump and of the vacuum pump are parallel an kinematically associated with each other so as to be capable of being driven into rotation through a single actuation member (for example through a gear group- which derives its motion from the crankshaft of the engine, such a gear group comprising a first sprocket -associated with the crankshaft of the engine and a second sprocket fitted onto the transmission shaft of the oil pump . and kinematically connected, . directly or through " the interposition of belts or chains, to a third sprocket fitted onto the transmission shaft of the vacuum pump) .
- US 6,345,600 provides an oil and vacuum pumps group, in which the rotors of the oil pump and of the vacuum pump are fitted on a single motion transmission shaft driven into rotation by a single gear arranged at the shaft front end and in which the stators of the oil pump and of the vacuum pump are defined by a single . -housing provided in the engine block.
- this is an oil and vacuum pumps group in which . oil pump and vacuum pump are integrated in the engine block.
- this group consists of a single component which, only when integrated in engine block, carries out the dual function of oil pump and vacuum pump.
- the integration of the oil and vacuum pumps group in the engine block implies the risk of damaging, during the assembly and/or installation and/or maintenance operations of the oil and vacuum pumps group, the walls of the housings- suitably provided in the engine block and acting. as a stator for the oil pump and for the vacuum pump, with the consequent need for intervention on such walls through subsequent rectification operations.
- the assembly, disassembly and maintenance operations of the oil and vacuum pumps group are thus particularly delicate, precisely due to the risk of damaging the engine, block.
- the technical problem at the basis of the present invention is that of providing an oil and vacuum pumps ' group which overcomes the drawbacks outlined above with reference to the prior art; in particular, the object of the present invention is that of providing an oil and vacuum pumps group which, besides being structurally and functionally simple, can ensure the desired features of interchangeability and flexibility in the combined use with an engine for motor vehicles and of speed and/or simplicity in the assembly and installation operations, at the same time ensuring bulk reduction.
- the present invention relates, in a first aspect thereof, to an oil and vacuum pumps group for a motor vehicle engine, comprising":
- At least one motion transmission shaft extending along a main axis X-X; at least one oil pump fitted on said at least one motion transmission shaft; - at least '.one vacuum pump fitted onto said at least one motion transmission shaft;
- the term "gear" is used to indicate any conventional mechanical member adapted to derive the motion from a different mechanical member and ' to transfer it to a • further mechanical member.
- the gear of the oil and vacuum pumps group of the present invention consists of- a sprocket adapted to engage ⁇ directly with a driving gear associated with the crankshaft of the motor vehicle engine.
- the deriving of motion from the driving gear can take place indirectly through the interposition of belts or chains.
- the oil and vacuum pumps group of the present invention is a structurally and functionally freestanding component with respect to the engine, i.e. a component which . is structurally and functionally independent from the engine.
- a component can be associated with and detached from the engine; it can therefore be used indistinctly in combination with a plurality of different engines, since it is not necessary to- provide the engine with suitable housings for the oil pump ' and/or vacuum pump. It is thus a. components which is extremely interchangeable and flexible in use.
- the installation of the oil and vacuum pumps group of the present invention does not require any prior intervention on the engine with which .said group is adapted to be associated (except .that of providing the . engine with conventional attachment means of the group of the invention) , the installation operations are extremely simple and fast, as well as the disassembly and maintenance operations of the group. Such operations, in any case, do not in any way involve the structure ' of the engine, which thus does not run the risk of being damaged or compromised.
- said at least one oil ' pump and said at least one _ vacuum pump are units. which are structurally independent from each other.
- the oil and vacuum pumps group of ' the present invention therefore consists of a modular combination of at least one oil pump, at least one vacuum pump and a motion deriving .gear, all of the conventional type.
- such modularity allows to. achieve clear advantages in terms of interchangeability of the individual components, namely the oil pump, the vacuum pump and the gear, as well as to achieve many advantages in the assembly, disassembly and maintenance operations of the aforementioned components.
- said gear is operatively placed between said at least one oil pump and said at least one .vacuum pump.
- a constructive configuration is particularly advantageous for those particular engines in which it is necessary to meet precise restrictions in terms of bulk and layout.
- such a constructive configuration is particularly advantageous for 4 X 4 engines, or engines for four-wheel drive motor vehicles, where it is necessary to provide for a suitable motion transmission shaft for the front drive wheels of the vehicle. Indeed, in such engines, considering the structural .
- the fact of positioning the gear of the oil and vacuum pumps group between the oil pump and the vacuum pump ensures that, once the oil and vacuum pumps group is installed in the engine with' its own gear positioned at the driving gear, the vacuum pump is arranged in a space which typically is unused (the space downstream of the gear and defined in the corner between the oil sump and the engine front end) , thus recovering a corresponding axial space upstream of the gear.
- a- recovered space can advantageously be used for other purposes, such as for the passage of the shaft for motion transmission to the front drive wheels of the -motor vehicle.
- said at least one oil pump is a single-stage pump, but alternatively a two-stage pump can be provided.
- the man skilled in the art shall understand that it is also foreseeable to use more than one oil pump and more than one vacuum pump in line (should a plurality of. different applications or features be slaved) .whilst still remaining within the scope of protection of the present invention as claimed hereafter.
- the oil and vacuum pumps group of the present invention also comprises means for the attachment to an engine block. More preferably, said means for the attachment to an engine block comprises a plurality of brackets adapted to cooperate with respective brackets formed on ⁇ said engine block.
- said means for the attachment to an engine block comprises a plurality of brackets adapted to cooperate with respective brackets formed on ⁇ said engine block.
- said at least one oil . pump and said at least one vacuum pump are fitted onto a single motion transmission shaft. .Such a solution is particularly preferred since it allows the number of mechanical element ' s used,' and thus the weight and bulk of the oil and vacuum pumps group of the invention, to be limited.
- said at least one oil pump and said at least one ' vacuum pump ' are fitted respectively on a first and second motion transmission, shafts, said first and second motion transmission ' shafts being kinematically associated with said gear and aligned ⁇ along said axis X-X.
- the present invention relates to a method for assembling an oil and vacuum pumps group for a motor vehicle engine / comprising the steps of: a) providing at least one motion transmission shaft; b) providing at least one oil pump; c) " providing at least one vacuum pump; d) providing a gear; e) fitting said gear, said at least one oil pump and said at least " one vacuum pump ' on sai at least one motion transmission shaft; characterised in that the step e) of fitting said gear, said at least one oil pump and said at " least one vacuum pump on said at least one motion transmission shaft comprises the step of positioning said gear between said at least one oil pump and said at least one vacuum pump.
- the present invention relates to a motor vehicle engine comprising an oil and vacuum pumps group of the type described above.
- figure ' 1 is a perspective view of an oil and vacuum pumps group in accordance with the present invention
- - figure 2 is an exploded perspective view of. the oil and vacuum pumps group of figure 1
- figure 3 is a ' schematic section view of the oil and vacuum pumps group of figure 1 associated with an engine block, the latter being shown only in part.
- an oil and vacuum pumps group in accordance with the present invention is indicated with 1.
- It ' is an oil and vacuum pumps group ' for a motor vehicle engine, particularly for an endothermic engine for heavy motor vehicles, such as buses, trucks and the like, • and/or for medium-high powered motor vehicles.
- FIG 3 a portion of the engine block with which the group -1. of the present invention is associated is indicated with 2. Further, the crankcase is indicated with 200.
- the group 1 comprises an oil pump 10 (which can indistinctly be a single-stage or two-stage pump) and a. vacuum pump ' 20 both fitted on a single motion transmission shaft, indicated in figures 2 and 3 with 30, extending along a main axis X-X.
- a gear 40, specifically a sprocket, 5 is also fitted onto the motion transmission shaft 30; the gear 40 is placed between the oil pump 10 and the' ' vacuum pump 20 'and - is adapted to engage ' with a driving gear, indicated with 41 ' in figure 3, • associated with the crankshaft of the motor vehicle,, so as to derive the rotary 10 motion from the engine and transfer it to the transmission shaft .30. of the group 1 in ' order to drive the oil pump 10 and the vacuum pump 2 .
- the oil pump 10, the vacuum pump 20, the motion transmission shaft 30, the gear 40, the driving gear 41 and 15 the engine itself are all components which are ⁇ structurally independent from each other and of the conventional type.
- the oil pump 10, the vacuum pump. 20, the motion 25 transmission shaft 30 and the gear 40 can be assembled and combined in a modular manner so ' as to form the group 1 of the present invention.
- the oil pump 10, the gear 40 and the vacuum pump 30 20 are fitted in succession onto the motion transmission shaft ' 30 (in the order indicated above' or in reverse order) .
- the group 1 at this point is assembled and ready to be installed in the motor vehicle engine.
- the oil and vacuum pumps group 1 of the ' 35 present invention is a structurally and functionally free- standing component with respect to the engine, with which it is intended to be removably associated through suitable brackets 50- adapted to cooperate with corresponding brackets (not illustrated) formed in the engine block 2.
- the restriction to be met is the positioning of the gear 40 at the driving gear 41 from which the motion must be derived.
- the group 1 of the present invention once associated with the engine, is positioned in such a way that the vacuum .pump 20 is arranged in a space 210 downstream of the gear 40.
- Such a space corresponds to the angle between the oil sump and the engine front end; in the engines of the prior • art such a
- ⁇ space which in any case is present, is typically unused. Therefore, a corresponding axial space upstream of the gear 40 is advantageously recovered, such a recovered space being advantageously usable for other purposes.
- a recovered axial space upstream of the gear 40 can be used for the passage of the shaft for the motion transmission to the front drive wheels of the motor vehicle.
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP03723067A EP1613862B1 (en) | 2003-04-16 | 2003-04-16 | Oil and vacuum pumps group for a motor vehicle engine |
PCT/IT2003/000243 WO2004092588A1 (en) | 2003-04-16 | 2003-04-16 | Oil and vacuum pumps group for a motor vehicle engine |
US10/553,398 US20070059187A1 (en) | 2003-04-16 | 2003-04-16 | Oil and vacuum pumps group for a motor vehicle engine |
DE60335036T DE60335036D1 (en) | 2003-04-16 | 2003-04-16 | OIL AND VACUUM PUMP UNIT FOR A VEHICLE BRAKING MACHINE |
AT03723067T ATE488697T1 (en) | 2003-04-16 | 2003-04-16 | OIL AND VACUUM PUMP UNIT FOR AN VEHICLE COMBUSTION ENGINE |
AU2003230211A AU2003230211A1 (en) | 2003-04-16 | 2003-04-16 | Oil and vacuum pumps group for a motor vehicle engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/IT2003/000243 WO2004092588A1 (en) | 2003-04-16 | 2003-04-16 | Oil and vacuum pumps group for a motor vehicle engine |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004092588A1 true WO2004092588A1 (en) | 2004-10-28 |
Family
ID=33187307
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/IT2003/000243 WO2004092588A1 (en) | 2003-04-16 | 2003-04-16 | Oil and vacuum pumps group for a motor vehicle engine |
Country Status (6)
Country | Link |
---|---|
US (1) | US20070059187A1 (en) |
EP (1) | EP1613862B1 (en) |
AT (1) | ATE488697T1 (en) |
AU (1) | AU2003230211A1 (en) |
DE (1) | DE60335036D1 (en) |
WO (1) | WO2004092588A1 (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007093581A1 (en) * | 2006-02-18 | 2007-08-23 | Pierburg Gmbh | Oil-pump and vacuum-pump module |
WO2008095459A1 (en) * | 2007-02-08 | 2008-08-14 | Ixetic Hückeswagen Gmbh | Pump |
CN102312988A (en) * | 2011-08-25 | 2012-01-11 | 奇瑞汽车股份有限公司 | Chain wheel with double driving ends and engine oil pump assembled with chain wheel |
WO2014044440A3 (en) * | 2012-09-21 | 2014-08-07 | Robert Bosch Gmbh | Pump arrangement |
WO2015101902A1 (en) | 2013-12-30 | 2015-07-09 | Vhit S.P.A. | Volumetric pump and operating method thereof |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8449271B2 (en) * | 2010-05-17 | 2013-05-28 | GM Global Technology Operations LLC | Engine assembly including camshaft with integrated pump |
US8944022B2 (en) | 2011-10-18 | 2015-02-03 | GM Global Technology Operations LLC | Pump assembly for internal combustion engine |
DE102012222753B4 (en) * | 2012-12-11 | 2016-08-04 | Schwäbische Hüttenwerke Automotive GmbH | Gas pump with sealing oil groove |
DE102013200410B4 (en) * | 2013-01-14 | 2017-12-07 | Schwäbische Hüttenwerke Automotive GmbH | Gas pump with pressure relief to reduce the starting torque |
DE102014204946A1 (en) * | 2014-03-18 | 2015-09-24 | Mahle International Gmbh | pump assembly |
DE102018105142A1 (en) * | 2018-03-06 | 2019-09-12 | Schwäbische Hüttenwerke Automotive GmbH | Sealing element vacuum pump |
Citations (5)
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GB2026612A (en) * | 1978-07-28 | 1980-02-06 | Barmag Barmer Maschf | Rotary positive-displacement fluid-machines |
EP0059086A1 (en) * | 1981-02-19 | 1982-09-01 | Wabco Automotive U.K. Limited | Ancillary rotary equipment for engines |
GB2205611A (en) * | 1987-06-09 | 1988-12-14 | Austin Rover Group | A pump assembly |
EP0543601A2 (en) * | 1991-11-18 | 1993-05-26 | Hobourn Automotive Limited | Rotary assemblies |
US6345600B1 (en) | 1999-06-29 | 2002-02-12 | Joma-Hydromechanic Gmbh | Arrangement of oil and vacuum pumps for a drive-motor assembly, particularly with an internal combustion engine |
Family Cites Families (12)
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US2669098A (en) * | 1950-01-03 | 1954-02-16 | Charles J Buell | Refrigerating system for trucks |
DE2952401A1 (en) * | 1978-07-28 | 1981-06-25 | Barmag Barmer Maschinenfabrik Ag, 5630 Remscheid | PRESSURE OIL LUBRICATION FOR A VACUUM PUMP, IN PARTICULAR LEAF CELL VACUUM PUMP |
US4497618A (en) * | 1983-09-12 | 1985-02-05 | General Motors Corporation | Combined vacuum pump and power steering pump assembly |
US4586468A (en) * | 1984-10-05 | 1986-05-06 | General Motors Corporation | Tandem pump assembly |
JPH04132414U (en) * | 1991-05-29 | 1992-12-08 | 株式会社アツギユニシア | Internal combustion engine valve timing control device |
US5535643A (en) * | 1993-11-12 | 1996-07-16 | General Motors Corporation | Anti-rattle engine balancer which drives associated oil pump |
JP3823451B2 (en) * | 1997-06-24 | 2006-09-20 | アイシン精機株式会社 | Valve timing control device |
US6190149B1 (en) * | 1999-04-19 | 2001-02-20 | Stokes Vacuum Inc. | Vacuum pump oil distribution system with integral oil pump |
DE10139267A1 (en) * | 2001-08-09 | 2003-02-27 | Porsche Ag | Pump device for lubricant of an internal combustion engine |
US6601557B1 (en) * | 2001-09-07 | 2003-08-05 | General Motors Corporation | Engine oil pump and balance shaft module |
US6860726B2 (en) * | 2002-02-05 | 2005-03-01 | The Boeing Company | Dual drive for hydraulic pump and air boost compressor |
DE60333503D1 (en) * | 2002-04-03 | 2010-09-02 | Slw Automotive Inc | Pump with variable capacity and control for it |
-
2003
- 2003-04-16 WO PCT/IT2003/000243 patent/WO2004092588A1/en not_active Application Discontinuation
- 2003-04-16 EP EP03723067A patent/EP1613862B1/en not_active Expired - Lifetime
- 2003-04-16 DE DE60335036T patent/DE60335036D1/en not_active Expired - Lifetime
- 2003-04-16 US US10/553,398 patent/US20070059187A1/en not_active Abandoned
- 2003-04-16 AU AU2003230211A patent/AU2003230211A1/en not_active Abandoned
- 2003-04-16 AT AT03723067T patent/ATE488697T1/en not_active IP Right Cessation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2026612A (en) * | 1978-07-28 | 1980-02-06 | Barmag Barmer Maschf | Rotary positive-displacement fluid-machines |
EP0059086A1 (en) * | 1981-02-19 | 1982-09-01 | Wabco Automotive U.K. Limited | Ancillary rotary equipment for engines |
GB2205611A (en) * | 1987-06-09 | 1988-12-14 | Austin Rover Group | A pump assembly |
EP0543601A2 (en) * | 1991-11-18 | 1993-05-26 | Hobourn Automotive Limited | Rotary assemblies |
US6345600B1 (en) | 1999-06-29 | 2002-02-12 | Joma-Hydromechanic Gmbh | Arrangement of oil and vacuum pumps for a drive-motor assembly, particularly with an internal combustion engine |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007093581A1 (en) * | 2006-02-18 | 2007-08-23 | Pierburg Gmbh | Oil-pump and vacuum-pump module |
WO2008095459A1 (en) * | 2007-02-08 | 2008-08-14 | Ixetic Hückeswagen Gmbh | Pump |
CN102312988A (en) * | 2011-08-25 | 2012-01-11 | 奇瑞汽车股份有限公司 | Chain wheel with double driving ends and engine oil pump assembled with chain wheel |
WO2014044440A3 (en) * | 2012-09-21 | 2014-08-07 | Robert Bosch Gmbh | Pump arrangement |
WO2015101902A1 (en) | 2013-12-30 | 2015-07-09 | Vhit S.P.A. | Volumetric pump and operating method thereof |
Also Published As
Publication number | Publication date |
---|---|
AU2003230211A1 (en) | 2004-11-04 |
EP1613862A1 (en) | 2006-01-11 |
DE60335036D1 (en) | 2010-12-30 |
ATE488697T1 (en) | 2010-12-15 |
AU2003230211A8 (en) | 2004-11-04 |
US20070059187A1 (en) | 2007-03-15 |
EP1613862B1 (en) | 2010-11-17 |
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