WO2006066994A1 - Kolbenpumpe mit wenigstens einem stufenkolbenelement - Google Patents
Kolbenpumpe mit wenigstens einem stufenkolbenelement Download PDFInfo
- Publication number
- WO2006066994A1 WO2006066994A1 PCT/EP2005/055667 EP2005055667W WO2006066994A1 WO 2006066994 A1 WO2006066994 A1 WO 2006066994A1 EP 2005055667 W EP2005055667 W EP 2005055667W WO 2006066994 A1 WO2006066994 A1 WO 2006066994A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pressure chamber
- piston element
- volume
- stepped piston
- piston pump
- 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.)
- Ceased
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T8/00—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force
- B60T8/32—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration
- B60T8/34—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition
- B60T8/40—Arrangements for adjusting wheel-braking force to meet varying vehicular or ground-surface conditions, e.g. limiting or varying distribution of braking force responsive to a speed condition, e.g. acceleration or deceleration having a fluid pressure regulator responsive to a speed condition comprising an additional fluid circuit including fluid pressurising means for modifying the pressure of the braking fluid, e.g. including wheel driven pumps for detecting a speed condition, or pumps which are controlled by means independent of the braking system
- B60T8/4031—Pump units characterised by their construction or mounting
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B1/0404—Details or component parts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B1/0404—Details or component parts
- F04B1/0408—Pistons
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B1/053—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the inner ends of the cylinders
- F04B1/0531—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the inner ends of the cylinders with cam-actuated distribution members
- F04B1/0533—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement with actuating or actuated elements at the inner ends of the cylinders with cam-actuated distribution members each machine piston having channels that coact with the cylinder and serve as distribution members for another piston-cylinder unit
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B11/00—Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B5/00—Machines or pumps with differential-surface pistons
- F04B5/02—Machines or pumps with differential-surface pistons with double-acting pistons
Definitions
- the invention relates to a piston pump with at least one drivable via an eccentric and longitudinally movably arranged in a housing stepped piston element according to the closer defined in the preamble of claim 1.
- DE 199 28 913 A1 discloses a piston pump with a pump housing having a pump bore and with a piston which is arranged in the pump bore and can be driven in the axial direction.
- the piston is designed as a stepped piston and limited together with the pump housing pressure chambers, which are connected via an inlet valve means for guiding fluid from a first pressure chamber connected to a first pressure chamber in a second pressure chamber and their volumes vary depending on a movement of the piston element.
- a volume of the first pressure chamber is reduced during a suction stroke of the piston which increases the volume of the second pressure chamber, while the volume of the first pressure chamber is increased during a compression stroke of the piston which reduces the volume of the second pressure chamber.
- the second pressure chamber is connected to a delivery side via an exhaust valve device during the compression stroke and separated from the intake region and the intake side of the piston pump by the intake valve device.
- the suction-side stepped configuration of the piston causes the volume flow in the suction line to be divided between the movement of the piston in the compression stroke and during the suction stroke and during the suction stroke, thereby reducing the friction losses of the liquid in the outlet region of the piston pump and a better suction behavior of the piston pump is reached.
- the disadvantage here is j edoch that compressed by the piston pump only during the compression stroke or the compression stroke of the piston compressed fluid from the second pressure chamber to the delivery side of the piston pump is promoted, resulting in unwanted noise due to the uneven pressure pulsation.
- the piston pump according to the invention is embodied with at least one stepped piston element which can be driven via a drive device and is arranged longitudinally movably in a housing.
- the stepped piston element is operatively connected to the drive device such that both tensile and compressive forces can be transmitted via the operative connection.
- the piston pump is formed with two pressure chambers which are in each case limited by the stepped piston element and the housing and which can be connected via an inlet valve device for guiding fluid from a first pressure chamber connected to a suction region into a second pressure chamber.
- the volumes of the two pressure chambers vary in response to a movement of the piston element, wherein a volume of the first pressure chamber is reduced during a suction stroke of the stepped piston element increasing the volume of the second pressure chamber and the volume of the first pressure chamber during a compression stroke of the stepped piston element increasing the volume of the second pressure chamber is reduced.
- the second pressure chamber can be connected via an outlet valve device to a delivery side of the piston pump.
- a volume of a third pressure space bounded at least by the stepped piston element and the housing is increased by a defined volume during the compression stroke of the stepped piston element and is reduced by the defined volume value during the suction stroke of the stepped piston element, wherein the defined volume value is smaller than the VoIu change of the second pressure chamber during the compression stroke of the stepped piston element.
- the delivery-side distribution of the fluid volume flow causes a reduction in the friction losses of the liquid in the delivery-side lines of the piston pump, whereby a better flow behavior of the piston pump is achieved with compared to conventional piston pump lower operating noise.
- the sole figure of the drawing shows a piston pump according to the invention in a schematic longitudinal sectional view.
- a piston pump 1 is shown with a drive means 2 drivable and longitudinally movably arranged in a housing 3 stepped piston element 4 in a partial longitudinal section.
- the drive device 2 is presently designed as an eccentric, so that the stepped piston element 4 in response to a rotational movement of a preferably driven by an electric motor not shown eccentric shaft 5 between two end positions, d. H . a top dead center and a bottom dead center, is adjusted in the axial direction.
- the stepped piston element 4 With its end facing the drive device 2, the stepped piston element 4 is connected to an eccentric ring 6, so that the stepped piston element 4 is operatively connected to the drive device 2 such that both tensile and compressive forces can be transmitted via the operative connection.
- the region of the stepped piston element 4, which passes through the eccentric ring 6, is opposite both the region of the stepped piston element 4, which is arranged on the eccentric shaft 5 facing away from the side of the eccentric 6, and with respect to the region of the stepped piston member 4, which is arranged on the eccentric shaft 5 facing side of the eccentric 6, executed with a reduced outer diameter.
- the operative connection is thus produced between the stepped piston element 4 and the eccentric 6 positively.
- a further stepped piston member 104 which is connected in the same manner as the stepped piston member 4 with the drive means 2 and 180 ° out of phase with the piston member 4 driven by the drive means 2 is arranged a further piston pump, which in principle has the same structure as the piston pump 1 and is provided to supply a further pressure circuit of a vehicle brake system as needed.
- housing 3 and the stepped piston element 4 together with a housing-fixed guide sleeve 7 and a housing-side fixed insert element 8 define a plurality of pressure chambers 9 to 12.
- the volumes of the pressure chambers 9 to 12 in each case vary as a function of the movement of the stepped piston element 4, a volume of the first pressure chamber 9 being reduced during a suction stroke of the stepped piston element 4 which enlarges the volume of the second pressure chamber 10 and during a compression stroke increasing the volume of the second pressure chamber of the stepped piston element 4 is reduced.
- the inlet valve device 13 is closed during the compression stroke of the stepped piston element 4.
- an outlet valve device 16 separating the second pressure chamber 10 in the closed state from the delivery side 15 of the piston pump 1 is opened and the fluid compressed during the compression stroke of the piston element 4 from its bottom dead center toward its top dead center is conveyed from the second pressure chamber 10 in the direction of the delivery side 15 of the piston pump 1.
- a third pressure chamber 11 is delimited by the stepped piston element 4, the insert element 8 and the housing 3, which is permanently connected to the delivery side 15 via slots 17 of the guide sleeve 7.
- a fourth pressure chamber 12 is provided between the insert element 8 and the stepped piston element 4, which Tels a so-called overflow cuff 18 is sealed from the third pressure chamber 11.
- the third pressure chamber 11 is in turn sealed against the first pressure chamber 9 in the region between the guide sleeve 7 and the stepped piston element 4 via a sealing device 19 and between the housing 3 and the guide sleeve 7 via a sealing partial interference fit between the guide sleeve 7 and the housing 3.
- the first pressure chamber 9 and the suction region 14 of the piston pump 1 relative to the drive device 2 via a arranged between the stepped piston element 4 and the guide sleeve 7 sealing means 20 and a press fit between the guide sleeve 7 and the housing 3 is sealed.
- the stepped piston element 4 starting from its bottom dead center, in which the first pressure chamber 9, which is embodied here as an annular space delimited by the guide sleeve 7 and the stepped piston element 4, has its minimum volume, is moved in the direction of its top dead center, in which the first Pressure chamber 9 has its maximum volume, the volume of the second pressure chamber 10 is increasingly reduced. In this case, the pressure in the second pressure chamber 10 increases.
- the inlet valve device 13 is due to the spring force of a spring device 21 and the positive pressure gradient between the second pressure chamber 10 and the first pressure chamber 9, the open inlet valve device 13th via a transverse bore 22 and a longitudinal bore 23 of the stepped piston element 4 are connected, closed.
- the volume of the second pressure chamber 10 is reduced and the volume of the first pressure chamber 9, which is connected to the suction region 14 of the piston pump 1 via at least one bore 24 of the guide sleeve 7, is increased.
- the area ratios of the piston stages of the stepped piston element 4 are dimensioned such that the volume change of the first pressure chamber 9 corresponds approximately to half the volume change of the second pressure chamber 10 during a compression stroke or a suction stroke of the stepped piston element 4.
- the volume of the third pressure chamber 11 connected to the delivery side 15 of the piston pump 1 varies approximately half the stroke volume of the piston pump 1 or the volume change of the second pressure chamber 10 during the compression stroke or the suction stroke of the stepped piston element 4 the volume of the third pressure chamber 11 is increased by half the stroke volume of the second pressure chamber 10 during the compression stroke of the piston element 4 and reduced by half the stroke volume of the second pressure chamber 10 during a suction stroke of the stepped piston element 4.
- a negative pressure or a slight overpressure builds up during operation of the piston pump 1 as a function of the movement of the stepped piston element 4. If the fourth pressure chamber 12 is filled with fluid during the operation of the piston pump via the seal leakage, starting from the second pressure chamber 10 - when the piston pump is used in a brake system with brake fluid - the possibly. Excess volume in the fourth pressure chamber 12 via the overflow sleeve 18 degraded in the direction of the third pressure chamber 11.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Transportation (AREA)
- Reciprocating Pumps (AREA)
- Details Of Reciprocating Pumps (AREA)
Abstract
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE502005002948T DE502005002948D1 (de) | 2004-12-22 | 2005-10-31 | Kolbenpumpe mit wenigstens einem stufenkolbenelement |
| JP2007547413A JP4653813B2 (ja) | 2004-12-22 | 2005-10-31 | 少なくとも1つの段付ピストンエレメントを備えたピストンポンプ |
| EP05801506A EP1831547B1 (de) | 2004-12-22 | 2005-10-31 | Kolbenpumpe mit wenigstens einem stufenkolbenelement |
| US11/721,984 US20090269227A1 (en) | 2004-12-22 | 2005-10-31 | Piston pump with at least one stepped piston element |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102004061810.0 | 2004-12-22 | ||
| DE102004061810A DE102004061810A1 (de) | 2004-12-22 | 2004-12-22 | Kolbenpumpe mit wenigstens einem Stufenkolbenelement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2006066994A1 true WO2006066994A1 (de) | 2006-06-29 |
Family
ID=35462632
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2005/055667 Ceased WO2006066994A1 (de) | 2004-12-22 | 2005-10-31 | Kolbenpumpe mit wenigstens einem stufenkolbenelement |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20090269227A1 (de) |
| EP (1) | EP1831547B1 (de) |
| JP (1) | JP4653813B2 (de) |
| AT (1) | ATE386883T1 (de) |
| DE (2) | DE102004061810A1 (de) |
| WO (1) | WO2006066994A1 (de) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008015068A1 (de) * | 2006-08-01 | 2008-02-07 | Robert Bosch Gmbh | Kolben einer fahrzeugbremsanlagen-kolbenpumpe |
| WO2008015067A1 (de) * | 2006-08-01 | 2008-02-07 | Robert Bosch Gmbh | Fahrzeugbremsanlagen-kolbenpumpe mit einem kolben |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2492506B1 (de) * | 2011-02-28 | 2019-04-10 | Delphi Technologies IP Limited | Pumpkopf |
| DE102014218915A1 (de) | 2014-09-19 | 2016-04-07 | Robert Bosch Gmbh | Kolbenpumpe |
| DE102018216371A1 (de) * | 2018-09-25 | 2020-03-26 | Continental Automotive Gmbh | Vorrichtung zum Betreiben einer Fluidförderpumpe für ein Kraftfahrzeug und Fluidförderpumpe für ein Kraftfahrzeug |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6079961A (en) * | 1997-07-30 | 2000-06-27 | Robert Bosch Gmbh | Piston pump for a vehicle brake system having a plastic piston with a wear resistant cam-striking face |
| DE10229201A1 (de) * | 2001-06-30 | 2003-01-16 | Bosch Gmbh Robert | Kolbenpumpe |
Family Cites Families (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1184447A (en) * | 1913-05-03 | 1916-05-23 | Brown Co | Air-compressing apparatus. |
| US1937150A (en) * | 1930-04-03 | 1933-11-28 | Trico Products Corp Of Buffalo | Suction pump |
| US2668004A (en) * | 1948-03-02 | 1954-02-02 | American Brake Shoe Co | Compressor |
| JPS5540377Y2 (de) * | 1973-05-08 | 1980-09-20 | ||
| IT7904915U1 (it) * | 1979-08-28 | 1981-02-28 | Safe Srl | Compressore volumetrico alternativo polistadio. |
| US4334833A (en) * | 1980-10-28 | 1982-06-15 | Antonio Gozzi | Four-stage gas compressor |
| US4832578A (en) * | 1986-11-14 | 1989-05-23 | The B.F. Goodrich Company | Multi-stage compressor |
| US5482443A (en) * | 1992-12-21 | 1996-01-09 | Commonwealth Scientific And Industrial Research Organization | Multistage vacuum pump |
| DE4328264A1 (de) * | 1993-08-23 | 1995-03-02 | Hydac Technology Gmbh | Hydraulischer Gasverdichter |
| US5525044A (en) * | 1995-04-27 | 1996-06-11 | Thermo Power Corporation | High pressure gas compressor |
| US5575626A (en) * | 1995-05-12 | 1996-11-19 | Cryogenic Group, Inc. | Cryogenic pump |
| DE19747852A1 (de) * | 1997-10-30 | 1999-05-06 | Bosch Gmbh Robert | Kolbenpumpe |
| DE19924774A1 (de) * | 1999-05-29 | 2000-11-30 | Bosch Gmbh Robert | Kolbenpumpe |
| DE19928913A1 (de) * | 1999-06-24 | 2001-01-04 | Bosch Gmbh Robert | Kolbenpumpe |
| DE10015295A1 (de) * | 2000-03-28 | 2001-10-04 | Bosch Gmbh Robert | Kolbenpumpe |
| DE10106641A1 (de) * | 2001-02-12 | 2002-08-22 | Bosch Gmbh Robert | Kolbenpumpe |
| DE10112618A1 (de) * | 2001-03-14 | 2002-09-19 | Bosch Gmbh Robert | Kolbenpumpe |
| JP2002295365A (ja) * | 2001-03-30 | 2002-10-09 | Dyflex Corp | 圧送ポンプおよび防水施工システム |
| JP2003003966A (ja) * | 2001-06-20 | 2003-01-08 | Mitsuharu Umagami | 高圧発生装置 |
-
2004
- 2004-12-22 DE DE102004061810A patent/DE102004061810A1/de not_active Withdrawn
-
2005
- 2005-10-31 WO PCT/EP2005/055667 patent/WO2006066994A1/de not_active Ceased
- 2005-10-31 EP EP05801506A patent/EP1831547B1/de not_active Expired - Lifetime
- 2005-10-31 AT AT05801506T patent/ATE386883T1/de not_active IP Right Cessation
- 2005-10-31 US US11/721,984 patent/US20090269227A1/en not_active Abandoned
- 2005-10-31 JP JP2007547413A patent/JP4653813B2/ja not_active Expired - Fee Related
- 2005-10-31 DE DE502005002948T patent/DE502005002948D1/de not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6079961A (en) * | 1997-07-30 | 2000-06-27 | Robert Bosch Gmbh | Piston pump for a vehicle brake system having a plastic piston with a wear resistant cam-striking face |
| DE10229201A1 (de) * | 2001-06-30 | 2003-01-16 | Bosch Gmbh Robert | Kolbenpumpe |
| US20040234400A1 (en) * | 2001-06-30 | 2004-11-25 | Rene Schepp | Piston pump |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2008015068A1 (de) * | 2006-08-01 | 2008-02-07 | Robert Bosch Gmbh | Kolben einer fahrzeugbremsanlagen-kolbenpumpe |
| WO2008015067A1 (de) * | 2006-08-01 | 2008-02-07 | Robert Bosch Gmbh | Fahrzeugbremsanlagen-kolbenpumpe mit einem kolben |
Also Published As
| Publication number | Publication date |
|---|---|
| EP1831547A1 (de) | 2007-09-12 |
| DE502005002948D1 (de) | 2008-04-03 |
| JP4653813B2 (ja) | 2011-03-16 |
| US20090269227A1 (en) | 2009-10-29 |
| EP1831547B1 (de) | 2008-02-20 |
| DE102004061810A1 (de) | 2006-07-06 |
| JP2008524507A (ja) | 2008-07-10 |
| ATE386883T1 (de) | 2008-03-15 |
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