EP1438507A1 - Innenzahnradpumpe - Google Patents
InnenzahnradpumpeInfo
- Publication number
- EP1438507A1 EP1438507A1 EP02758092A EP02758092A EP1438507A1 EP 1438507 A1 EP1438507 A1 EP 1438507A1 EP 02758092 A EP02758092 A EP 02758092A EP 02758092 A EP02758092 A EP 02758092A EP 1438507 A1 EP1438507 A1 EP 1438507A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pinion
- gear pump
- internal gear
- compression spring
- toothed ring
- 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
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
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M39/00—Arrangements of fuel-injection apparatus with respect to engines; Pump drives adapted to such arrangements
- F02M39/005—Arrangements of fuel feed-pumps with respect to fuel injection apparatus
-
- 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
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0003—Sealing arrangements in rotary-piston machines or pumps
- F04C15/0007—Radial sealings for working fluid
- F04C15/0019—Radial sealing elements specially adapted for intermeshing-engagement type machines or pumps, e.g. gear machines or 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
- F04C15/00—Component parts, details or accessories of machines, pumps or pumping installations, not provided for in groups F04C2/00 - F04C14/00
- F04C15/0057—Driving elements, brakes, couplings, transmission specially adapted for machines or pumps
- F04C15/0061—Means for transmitting movement from the prime mover to driven parts of the pump, e.g. clutches, couplings, transmissions
- F04C15/0073—Couplings between rotors and input or output shafts acting by interengaging or mating parts, i.e. positive coupling of rotor and shaft
-
- 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
- F04C2/102—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 the two members rotating simultaneously around their respective axes
Definitions
- the invention relates to an internal gear pump for delivering fuel in an internal combustion engine, with an internal gear ring and an external gear which cooperates with the gear ring to produce a pumping effect.
- Such an internal gear pump is also called
- Called gerotor pump The toothed ring and the pinion represent the pump elements and are also referred to as the outer rotor and inner rotor.
- DE 38 27 573 AI describes an internal gear pump, the gear ring of which is driven by an electric motor.
- the delivery chambers of the internal gear pump between the teeth of the two pump elements are covered in the axial direction by a thrust washer.
- the object of the invention is the delivery rate at the starting speed and the life of the input increase internal gear pump.
- the internal gear pump according to the invention should be inexpensive to manufacture.
- an internal gear pump for delivering fuel in an internal combustion engine, with an internal gear ring and an external gear which cooperates with the gear ring to produce a pumping action, in that the pinion is eccentric to the gear ring on a bearing stub and is radially movable is mounted, and that a device is provided to compensate for the radial play between the pinion and the toothed ring, in particular when starting the internal combustion engine.
- the pressure in the internal gear pump is zero.
- a particularly simple and effective embodiment of the device according to the invention consists of a transverse bore in the bearing stub and a second compression spring located in the transverse bore, the second compression spring being supported at least indirectly against the pinion.
- the pinion is pressed against the toothed ring by the spring force as long as the pressure in the interior of the gear pump is small. This is the case in particular when the internal combustion engine is at a standstill and when the internal combustion engine is started, so that the desired backlash-free interaction of pinion and toothed ring automatically results.
- the direction of the cross hole determines the point at which the tooth tips of the pinion and the toothed ring touch each other. It has proven to be advantageous if the direction of the transverse bore lies between the suction chamber and the pressure chamber of the pump.
- a further embodiment of the invention can provide that a pressure piece, in particular a ball, is provided between the second compression spring and the pinion, so that no sliding friction, but only rolling friction between the second compression spring and pinion occurs.
- toothed ring is coupled by an Oldham coupling with a clutch disc or a radially elastic coupling to a drive shaft, so that even a slight axial offset of the axis of rotation of the toothed ring and the drive shaft can be compensated for and not to impermissible stresses the internal gear pump leads.
- the clutch disc is adjustable by a first compression spring, in particular a first compression spring Preload is pressed onto the pinion and the toothed ring, the first compression spring being able to be arranged, for example, in the end of the drive shaft.
- a first compression spring Preload is pressed onto the pinion and the toothed ring, the first compression spring being able to be arranged, for example, in the end of the drive shaft.
- Figure 1 shows an embodiment of the internal gear pump according to the invention in plan view without 15 pump housing
- Figures 3 and 4 different embodiments of a clutch disc according to the invention in a perspective view.
- Internal gear pump 2 is attached.
- an externally toothed pinion 3 is rotatably mounted on a bearing stub 5.
- the externally toothed pinion 3 is mounted eccentrically to an internally toothed toothed ring 11.
- the toothed ring 11 has two mutually opposite recesses 6 and 7, via which the toothed ring is driven by a drive shaft (not shown in FIG.) And an Oldham coupling (also not shown).
- a toothed head 13 of the pinion 3 should be held in contact with a toothed head 14 of the toothed ring 11 when the internal combustion engine is started.
- the tooth heads 13 and 14 should lift off from one another in order to reduce their wear.
- a recess 8 is formed on the shaft end 21.
- the 20 depression 8 has two mutually parallel side walls, which are not visible in FIG. 2. In the position of the shaft end 21 shown in FIG. 2, these parallel side walls run perpendicular to the plane of the drawing.
- the parallel side walls of the recess 9 and the square 10 of the clutch disc 9 enable the transmission of the torque required to drive the internal gear pump 2 from the shaft end 21 to the
- Cross disc clutch is called. It serves to transmit the rotational movement of the drive shaft end 21 to the toothed ring 11 of the internal gear pump 2 even in the event of an axis offset.
- the cross-plate clutch enables an axial offset between the drive shaft end 21 and the axis of rotation of the toothed ring 11 to be compensated for.
- a first compression spring 16 is provided in the shaft end 21, which is supported at one end against the shaft end 21 and at the other end against the square 10.
- the clutch disc 9 is pressed against the toothed ring 11, so that the internal gear pump 2 has no axial play at least at a standstill.
- An axial play of, for example, 0.005 mm between pinion 3 and clutch disc 9 should be present when the pump is started.
- the bearing stub 5 there is a transverse bore 17 which receives a second compression spring 18 and a ball 19.
- the second compression spring 18 presses the pinion 3 against the toothed ring 11 such that, when the internal gear pump 2 is at a standstill, there is no play between the toothed head 13 of the pinion 3 and the toothed head of the toothed ring 11.
- an inlet channel 22 and a delivery channel 23 can be seen in the pump housing, via which the fuel is sucked in by the high-pressure pump (not shown), not shown.
- the fuel (not shown) flows through an inlet bore 24 to the inlet channel 22 and flows out of the delivery channel 23 into a delivery bore 25.
- a first embodiment of a clutch disc 9 according to the invention is shown in perspective.
- the clutch disc 9 is made in this embodiment from a piece of sheet metal.
- the lugs 12 have been formed by bending two incised metal strips of the clutch disc 9 upwards.
- the double-edged element 10 which is only shown in broken lines, is formed by two sheet metal strips of the clutch disc 9 which are folded down.
- the clutch disc 9, as indicated by the arrows in FIG. 3 enables compensatory movements in the X and Y directions. An axial offset between the axis of rotation of the shaft end 21 and the toothed ring 11 can thereby be compensated for.
- the clutch disc 9 is manufactured, for example, by sintering or die casting.
- the lugs 12 and the square 10 are sintered or cast on the actual clutch disc 9 in this embodiment.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Rotary Pumps (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10150653 | 2001-10-13 | ||
DE10150653A DE10150653A1 (de) | 2001-10-13 | 2001-10-13 | Innenzahnradpumpe |
PCT/DE2002/002577 WO2003036091A1 (de) | 2001-10-13 | 2002-07-13 | Innenzahnradpumpe |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1438507A1 true EP1438507A1 (de) | 2004-07-21 |
EP1438507B1 EP1438507B1 (de) | 2007-04-11 |
Family
ID=7702441
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP02758092A Expired - Lifetime EP1438507B1 (de) | 2001-10-13 | 2002-07-13 | Innenzahnradpumpe |
Country Status (7)
Country | Link |
---|---|
US (1) | US7052257B2 (de) |
EP (1) | EP1438507B1 (de) |
JP (1) | JP4188836B2 (de) |
CN (1) | CN1284931C (de) |
AT (1) | ATE359444T1 (de) |
DE (2) | DE10150653A1 (de) |
WO (1) | WO2003036091A1 (de) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10337847A1 (de) * | 2003-08-18 | 2005-03-17 | Robert Bosch Gmbh | Pumpenanordnung mit einer Hochdruckpumpe und einer dieser vorgeschalteten Niederdruckpumpe für eine Kraftstoffeinspritzeinrichtung einer Brennkraftmaschine |
JP5053637B2 (ja) * | 2003-09-11 | 2012-10-17 | ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング | 回転ピストン機械 |
WO2005024236A1 (de) * | 2003-09-11 | 2005-03-17 | Cor Pumps + Compressors Ag | Drehkolbenmaschine |
DE102006037177A1 (de) * | 2006-08-09 | 2008-02-14 | Robert Bosch Gmbh | Innenzahnradpumpe |
US7669577B2 (en) * | 2008-02-07 | 2010-03-02 | Kohler Co. | Gerotor and method of assembling the same |
DE102008054753A1 (de) * | 2008-12-16 | 2010-06-17 | Robert Bosch Gmbh | Innenzahnradpumpe |
US20100322806A1 (en) * | 2009-06-18 | 2010-12-23 | Aregger Markus | Arrangement including a gear pump |
DE102010000850A1 (de) * | 2010-01-13 | 2011-07-14 | Robert Bosch GmbH, 70469 | Kupplung, insbesondere zum Koppeln einer Hochdruckpumpe mit einer Zahnradpumpe |
DE102012218397A1 (de) | 2012-10-10 | 2014-04-10 | Robert Bosch Gmbh | Hydrostatische Maschine |
DE102013210036A1 (de) * | 2013-05-29 | 2014-12-04 | Robert Bosch Gmbh | Hochdruckpumpe für ein Kraftstoffeinspritzsystem |
KR20150071188A (ko) * | 2013-12-18 | 2015-06-26 | 현대자동차주식회사 | 펌프 구조 |
GB2559148B (en) * | 2017-01-26 | 2019-06-05 | Delphi Tech Ip Ltd | Driveshaft with transfer pump adapter |
DE102021201302A1 (de) | 2021-02-11 | 2022-08-11 | Magna powertrain gmbh & co kg | Gerotorpumpe |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1497050A (en) | 1923-10-25 | 1924-06-10 | Hill Compressor & Pump Company | Rotary pump |
DE590394C (de) | 1931-01-30 | 1933-12-30 | Const Mecaniques L Aster Atel | Pumpe mit zylindrischem Gehaeuse |
CH262067A (fr) | 1946-02-02 | 1949-06-15 | Quaglia Senta Ulrico | Pompe rotative sans soupapes. |
US3536426A (en) | 1968-04-03 | 1970-10-27 | Novelty Tool Co Inc | Gear pump having eccentrically arranged internal and external gears |
US4156585A (en) | 1977-10-03 | 1979-05-29 | Borg-Warner Corporation | Gerotor device with porting through eccentric drive |
DE2814659C2 (de) | 1978-04-05 | 1984-02-02 | Danfoss A/S, 6430 Nordborg | Zahnradpumpe |
DE2829417C3 (de) * | 1978-07-05 | 1984-07-12 | Mannesmann Rexroth GmbH, 8770 Lohr | Arbeitsmittelsteuerung für eine parallel- und innenachsige Rotationskolbenmaschine |
DE8226081U1 (de) * | 1982-09-16 | 1984-02-23 | Arthur Pfeiffer Vakuumtechnik Wetzlar Gmbh, 6334 Asslar | Kupplungsanordnung fuer zweistufige drehschieberpumpen |
JPS6248977A (ja) | 1985-08-27 | 1987-03-03 | Honda Motor Co Ltd | 内燃機関用流体ポンプ |
DE3827573A1 (de) * | 1988-08-13 | 1990-02-15 | Bosch Gmbh Robert | Vorrichtung zum foerdern von kraftstoff aus einem vorratstank zur brennkraftmaschine, insbesondere eines kraftfahrzeuges |
US5145348A (en) * | 1991-05-15 | 1992-09-08 | Eaton Corporation | Gerotor pump having an improved drive mechanism |
JPH06249155A (ja) * | 1993-02-23 | 1994-09-06 | Toyoda Mach Works Ltd | 歯車ポンプ |
DE19651683A1 (de) * | 1996-12-12 | 1998-06-18 | Otto Eckerle | Füllstücklose Innenzahnradpumpe |
DE10035900A1 (de) * | 2000-07-21 | 2002-01-31 | Bosch Gmbh Robert | Innenzahnradpumpe |
-
2001
- 2001-10-13 DE DE10150653A patent/DE10150653A1/de not_active Ceased
-
2002
- 2002-07-13 WO PCT/DE2002/002577 patent/WO2003036091A1/de active IP Right Grant
- 2002-07-13 EP EP02758092A patent/EP1438507B1/de not_active Expired - Lifetime
- 2002-07-13 AT AT02758092T patent/ATE359444T1/de not_active IP Right Cessation
- 2002-07-13 DE DE50209940T patent/DE50209940D1/de not_active Expired - Lifetime
- 2002-07-13 JP JP2003538572A patent/JP4188836B2/ja not_active Expired - Lifetime
- 2002-07-13 CN CNB028020375A patent/CN1284931C/zh not_active Expired - Fee Related
- 2002-07-13 US US10/450,462 patent/US7052257B2/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO03036091A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2003036091A1 (de) | 2003-05-01 |
ATE359444T1 (de) | 2007-05-15 |
JP4188836B2 (ja) | 2008-12-03 |
CN1463330A (zh) | 2003-12-24 |
US7052257B2 (en) | 2006-05-30 |
DE50209940D1 (de) | 2007-05-24 |
CN1284931C (zh) | 2006-11-15 |
JP2005506490A (ja) | 2005-03-03 |
DE10150653A1 (de) | 2003-04-30 |
EP1438507B1 (de) | 2007-04-11 |
US20040219038A1 (en) | 2004-11-04 |
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