WO2006056507A1 - Kolbenpumpe und kolbenring - Google Patents
Kolbenpumpe und kolbenring Download PDFInfo
- Publication number
- WO2006056507A1 WO2006056507A1 PCT/EP2005/055185 EP2005055185W WO2006056507A1 WO 2006056507 A1 WO2006056507 A1 WO 2006056507A1 EP 2005055185 W EP2005055185 W EP 2005055185W WO 2006056507 A1 WO2006056507 A1 WO 2006056507A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- piston
- pump
- piston ring
- ring
- tab
- Prior art date
Links
Classifications
-
- 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
-
- 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
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/14—Pistons, piston-rods or piston-rod connections
- F04B53/143—Sealing provided on the piston
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J9/00—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction
- F16J9/12—Details
- F16J9/14—Joint-closures
Definitions
- the invention is based on a piston pump according to the type defined in Ober ⁇ concept of claim 1 in more detail and of a piston ring of the type defined in the preamble of claim 7 in more detail.
- Such a piston pump is known from practice and, for example, part of a hydraulic vehicle brake system.
- the known piston pump has a pump housing, in which a pump piston is guided axially displaceable.
- a bushing can be provided, which is inserted into a bore of the pump housing.
- the pump piston has a tubular insert provided with an annular collar, on which also acts a return spring, which holds the pump piston in ribbed position. tion of an eccentric, by means of which the Pumpenkol ⁇ ben is driven.
- the insert which serves as a combined guiding and sealing element, is subject to wear in the area of its peripheral surface, so that the running time of the piston pump is limited.
- piston rings for sealing a guide region of pistons which are made of PTFE (polytetrafluoroethylene) are known from practice. These are usually designed as open rings and equipped in their separation area with either a straight joint, an oblique joint, a simple overlapping shock or with a so-called gas-tight shock. Piston rings made of PTFE are expensive to manufacture because they can only be machined. Also, these piston rings are not always guaranteed that they ensure sufficiently high tightness in the pressures prevailing in piston pumps of hydraulic brake systems.
- PTFE polytetrafluoroethylene
- the piston pump according to the invention with the features according to the preamble of claim 1 and a pump piston, which is guided by a piston ring auf ⁇ know a radi ⁇ al and axially pressure-assisted sealed separation point, has the advantage that by a simple component over the life of Piston pump in the guide region of Pum ⁇ penk ⁇ piston a tightness can be achieved, the the Range of motor vehicle braking systems or the like ge set requirements. Since there are overlap areas in a radially and axially pressure-assisted sealed separation point both in the radial and in the axial direction, a long-term functionality of the piston pump with constant efficiency is ensured even if the piston ring becomes worn on its peripheral surface.
- the piston pump according to the invention can be used in particular as a pump in a brake system of a motor vehicle and in this case serve to control the pressure in Rad ⁇ brake cylinders.
- the piston pump according to the invention is used in a brake system with wheel slip control (ABS or ESP) and / or in an electrohydraulic brake system (EHB).
- the pump then serves, for example, for returning brake fluid from a wheel brake cylinder or from a plurality of wheel brake cylinders into a master brake cylinder (ABS) and / or for conveying brake fluid from a reservoir into a wheel brake cylinder or into a plurality of wheel brake cylinders (ASR or FDR, respectively).
- EHB electrohydraulic brake system
- the pump can also be used to fill a reservoir of the brake system.
- a wheel slip control system By means of a wheel slip control system it is possible, for example, to prevent the wheels of the motor vehicle from locking during a braking operation (ABS) and / or from spinning the driven wheels of the motor vehicle (ASR).
- ASR driven wheels of the motor vehicle
- FDR brake system
- a brake pressure is built up in one or more wheel brake cylinders independently of an actuation of the brake pedal or accelerator pedal in order, for example, to force the vehicle out of the vehicle Driver to prevent desired lane.
- EHB electrohydraulic brake system
- the pump delivers brake fluid into the wheel brake cylinder or into the wheel brake cylinders when an electrical brake pedal sensor detects an actuation of the brake pedal.
- the piston ring in the region of the separation point in ⁇ cross-Ringend Symposiume, each having a tab which rests radially inward on a support region of the other ringend region and axially from the tab of the an ⁇ their Ringend ceremoniess is limited.
- each Ringend Scheme has a recess for the tab of the other Ringendrios, wherein between the two tabs and the two end regions occurring gaps are closed ge by the pending in particular in the pump chamber fluid pressure, as this ring over a ring between the Kolben ⁇ and the annular piston lying on the pump piston acts on the inner surface of the piston ring and on an end face of the piston ring.
- a preferred embodiment of the piston pump according to the invention is Er ⁇ when the piston ring is an injection molded part.
- the piston ring is thus produced from a sprayable material, in particular a polymer, the polymer being made, for example, from a filled or unfilled state. filled polyamide or from PEEK (polyetheretherketone) gebil ⁇ det.
- the piston ring then represents a low-cost producible and wear-resistant seal and guide, which also withstands high pressures, as occur, for example, in a pressure supply of an ABS / ESP system.
- the piston ring comprises in a preferred embodiment on its inner side spacers. These spacers define the width of an annular gap between the pump piston and the inside of the piston ring.
- the spacers are formed by axial ribs which are supported on the pump piston.
- the ribs thus receive a force of the pump piston acting in the radial direction, which is necessary for guiding the pump piston.
- the ribs can be plastically selectively over-pressed by ei ⁇ NEN certain amount without the friction between the piston ring and the wall for Füh ⁇ tion of the pump piston increases unfavorably.
- the invention also relates to a piston ring for guiding and sealing a piston-like component in a cylindrical receiving space.
- the piston ring has a Trennstel ⁇ le, in the region of intermeshing Ringend Schemee are provided, each having a tab which rests radially on a support portion of the other ring end region and axially bounded by the tab of the other Ringend ceremoniess.
- Such a piston ring can bring about a reliable axial and radial seal, each pressure-assisted.
- FIG. 1 shows a longitudinal section through an inventive piston pump of an electrohydraulic brake system
- FIG. 2 is a perspective view of a piston ring of the piston pump according to FIG. 1 for sealing and guiding; and FIG. 3 shows the sealing effect of the piston ring shown in FIG.
- FIG. 1 shows a piston pump 10 which is integrated in a hydraulic block which forms a pump housing 11.
- the hydraulic block is part of a hydraulic vehicle brake system and, in addition to the piston pump, optionally comprises further piston pumps of the same design as well as hydraulic components such as solenoid valves or pressure accumulators, which can be hydraulically interconnected with one another and with the piston pump 10 shown in the drawing.
- the piston pump 10 has a pump piston 12 which is guided in the pump housing 11 and which is guided on the pump housing 11 via a guide ring 14 at an end facing away from a displacement or pump chamber 13 and sealed by means of a sealing ring 15.
- the pump piston 12 is furthermore guided on a running sleeve 16 associated with the pump housing, which is fitted into a bore 17 of the pump housing 11 and fixed by means of a so-called outlet valve cover 18, which is also used as a closure part for the piston integrated into the hydraulic block pump 10 is used.
- a running sleeve 16 associated with the pump housing, which is fitted into a bore 17 of the pump housing 11 and fixed by means of a so-called outlet valve cover 18, which is also used as a closure part for the piston integrated into the hydraulic block pump 10 is used.
- the leadership of the pump piston 12 in the barrel sleeve 16 via a piston ring 19, which faces away from the pump chamber 13 on one end Supported annular collar 20 of the piston pump 12 and its structure and function will be described below with reference to Figures 2 and 3 ben.
- the pump piston 12 has a blind hole-like axial passage 21, which is connected via transverse bores 22 with an inlet channel 23 forming a suction side of the piston pump, so that fluid can be conveyed from the inlet channel 23 into the displacement chamber 13 during a suction process.
- the pump piston 12 is provided on its end face facing the displacement chamber 13 with a non-return valve 24 which comprises an attachment 25 whose foot region surrounds the receiving space for the piston ring 19 delimited on the side opposite the annular collar 20 and on which a reset spring 26 acts to bias the pump piston 12 in the direction away from the displacement chamber 13.
- the return spring 26 presses the pump piston 12 over the attachment 25 in the axial direction against an eccentric 27 that can be driven in an electric motor rotation, which serves to drive the piston 12 so that it experiences a reciprocating movement.
- the outlet valve cover 18 designed as a check valve outlet valve 28 is arranged, which controls a FIid idstrom between the displacement chamber 13 and a pressure side of the piston pump 10 forming outlet channel 29, the outlet valve cover 18 for this purpose on the Lauf ⁇ sleeve 26 facing end face is provided with a leading to the outlet channel 29, channel-like connecting channel 30.
- the piston ring 19, which is shown alone in FIG. 2, is an injection molded part made of filled polyamide, which is designed as an open ring, which has two interengaging end regions 32 and 33, each of which has a lug 34 or 35 for engagement in a recess 36 or 37 of the other end region 33 or 32.
- the tabs 34 and 35 each engage in the corresponding receptacle 36 or 37 so that they rest on a support area 38 or 39 of the other end area 33 or 32 and axially on the tab 35 or 34 of the other End region 33 and 32 are limited.
- the piston ring 19 On its inner side, the piston ring 19 furthermore has axially aligned ribs 40, which are uniformly distributed over the inner peripheral surface of the piston ring 19 and serve as spacers which define the width of an annular gap 41 between the pump piston 12 and the piston ring 19 , so that, in order to achieve the sealing effect, a fluid force X symbolized by arrows in FIG. 3 acts on the inside of the piston ring 19.
- the fluid force X also acts on the end face of the piston ring 19 facing away from the annular collar 20, between end regions 32 and 33 of the piston ring 19, in particular gaps between the tabs 34 and 35 and the respective associated support region 36 or 39 of the other end portion 33 or 32 and a gap between the tab 34 and the tab 35 can be sealed reliably.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Transportation (AREA)
- Details Of Reciprocating Pumps (AREA)
- Reciprocating Pumps (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/718,734 US20080025855A1 (en) | 2004-11-24 | 2005-10-12 | Piston Pump And Piston Ring |
EP05801349A EP1817498A1 (de) | 2004-11-24 | 2005-10-12 | Kolbenpumpe und kolbenring |
JP2007541894A JP2008520886A (ja) | 2004-11-24 | 2005-10-12 | ピストンポンプ及びピストンリング |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004056660A DE102004056660A1 (de) | 2004-11-24 | 2004-11-24 | Kolbenpumpe und Kolbenring |
DE102004056660.7 | 2004-11-24 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006056507A1 true WO2006056507A1 (de) | 2006-06-01 |
Family
ID=35385761
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2005/055185 WO2006056507A1 (de) | 2004-11-24 | 2005-10-12 | Kolbenpumpe und kolbenring |
Country Status (5)
Country | Link |
---|---|
US (1) | US20080025855A1 (de) |
EP (1) | EP1817498A1 (de) |
JP (1) | JP2008520886A (de) |
DE (1) | DE102004056660A1 (de) |
WO (1) | WO2006056507A1 (de) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8153724B2 (en) * | 2005-04-06 | 2012-04-10 | Dow Corning Corporation | Organosiloxane compositions |
DE102006035708A1 (de) * | 2006-08-01 | 2008-02-07 | Robert Bosch Gmbh | Fahrzeugbremsanlagen-Kolbenpumpe mit einem Kolben |
EP2312155B1 (de) * | 2009-10-15 | 2019-03-20 | Delphi International Operations Luxembourg S.à r.l. | Flüssigkeitspumpe und Pumpenkolben |
DE102009046313A1 (de) * | 2009-11-03 | 2011-05-05 | Robert Bosch Gmbh | Kolbenanordnung einer Kolbenpumpe |
DE102010003674A1 (de) * | 2010-04-07 | 2011-10-13 | Robert Bosch Gmbh | Ringförmiges Dichtelement |
US20120112415A1 (en) * | 2010-11-10 | 2012-05-10 | United Technologies Corporation | Rotating seal ring with targeted split surface orientation |
CN102927175A (zh) * | 2011-08-08 | 2013-02-13 | 永克达工业股份有限公司 | 油压刹车器内活塞环结构 |
JP2017154635A (ja) * | 2016-03-02 | 2017-09-07 | 日立オートモティブシステムズ株式会社 | ブレーキ装置、プランジャポンプおよびプランジャポンプの製造方法 |
JP2017190066A (ja) * | 2016-04-14 | 2017-10-19 | 日立オートモティブシステムズ株式会社 | ブレーキ装置およびプランジャポンプ |
US9995397B2 (en) | 2016-07-12 | 2018-06-12 | United Technologies Corporation | Coated seal housing |
KR102390510B1 (ko) * | 2017-07-31 | 2022-04-26 | 현대모비스 주식회사 | 전자제어식 브레이크 시스템용 펌프장치 |
US11542819B2 (en) * | 2021-02-17 | 2023-01-03 | Pratt & Whitney Canada Corp. | Split ring seal for gas turbine engine rotor |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2117086A (en) * | 1982-03-12 | 1983-10-05 | Dana Corp | Piston rings |
DE3806348A1 (de) * | 1988-02-27 | 1989-09-07 | Diehl Gmbh & Co | Kolbenring |
DE19753083A1 (de) * | 1997-07-30 | 1999-02-04 | Bosch Gmbh Robert | Kolbenpumpe |
DE10106641A1 (de) * | 2001-02-12 | 2002-08-22 | Bosch Gmbh Robert | Kolbenpumpe |
DE10253901A1 (de) * | 2001-11-29 | 2003-09-11 | Sauer Danfoss Inc | Mittels Drehmaschine gedrehte Stirnflächendichtung und Verfahren zum Abdichten eines irregulär geformten Hohlraumes |
EP1441156A1 (de) * | 2001-09-27 | 2004-07-28 | German Ivanovich Zakhvatov | Kolbendichtung |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1438763A (en) * | 1922-04-24 | 1922-12-12 | William H Stehle | Piston ring |
US1541944A (en) * | 1924-04-11 | 1925-06-16 | Guerlay Hampton Arthur | Piston ring |
DE19820902A1 (de) * | 1998-05-09 | 1999-11-11 | Bosch Gmbh Robert | Kolbenpumpe |
-
2004
- 2004-11-24 DE DE102004056660A patent/DE102004056660A1/de not_active Withdrawn
-
2005
- 2005-10-12 EP EP05801349A patent/EP1817498A1/de not_active Withdrawn
- 2005-10-12 WO PCT/EP2005/055185 patent/WO2006056507A1/de active Application Filing
- 2005-10-12 JP JP2007541894A patent/JP2008520886A/ja not_active Withdrawn
- 2005-10-12 US US11/718,734 patent/US20080025855A1/en not_active Abandoned
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2117086A (en) * | 1982-03-12 | 1983-10-05 | Dana Corp | Piston rings |
DE3806348A1 (de) * | 1988-02-27 | 1989-09-07 | Diehl Gmbh & Co | Kolbenring |
DE19753083A1 (de) * | 1997-07-30 | 1999-02-04 | Bosch Gmbh Robert | Kolbenpumpe |
US6276909B1 (en) * | 1997-07-30 | 2001-08-21 | Robert Bosch Gmbh | Piston pump for a hydraulic brake system of a vehicle |
DE10106641A1 (de) * | 2001-02-12 | 2002-08-22 | Bosch Gmbh Robert | Kolbenpumpe |
EP1441156A1 (de) * | 2001-09-27 | 2004-07-28 | German Ivanovich Zakhvatov | Kolbendichtung |
DE10253901A1 (de) * | 2001-11-29 | 2003-09-11 | Sauer Danfoss Inc | Mittels Drehmaschine gedrehte Stirnflächendichtung und Verfahren zum Abdichten eines irregulär geformten Hohlraumes |
Also Published As
Publication number | Publication date |
---|---|
EP1817498A1 (de) | 2007-08-15 |
JP2008520886A (ja) | 2008-06-19 |
DE102004056660A1 (de) | 2006-06-01 |
US20080025855A1 (en) | 2008-01-31 |
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