WO2018024381A1 - Vehicle brake system piston pump comprising a lubricant - Google Patents
Vehicle brake system piston pump comprising a lubricant Download PDFInfo
- Publication number
- WO2018024381A1 WO2018024381A1 PCT/EP2017/061147 EP2017061147W WO2018024381A1 WO 2018024381 A1 WO2018024381 A1 WO 2018024381A1 EP 2017061147 W EP2017061147 W EP 2017061147W WO 2018024381 A1 WO2018024381 A1 WO 2018024381A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- lubricant
- eccentric
- vehicle brake
- brake system
- piston pump
- 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
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/02—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical
- F04B9/04—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms
- F04B9/045—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being mechanical the means being cams, eccentrics or pin-and-slot mechanisms the means being eccentrics
-
- 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
- F04B53/18—Lubricating
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M107/00—Lubricating compositions characterised by the base-material being a macromolecular compound
- C10M107/38—Lubricating compositions characterised by the base-material being a macromolecular compound containing halogen
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Y—INDEXING SCHEME RELATING TO ASPECTS CROSS-CUTTING VEHICLE TECHNOLOGY
- B60Y2400/00—Special features of vehicle units
- B60Y2400/81—Braking systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2210/00—Working fluid
- F05B2210/10—Kind or type
- F05B2210/11—Kind or type liquid, i.e. incompressible
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2260/00—Function
- F05B2260/98—Lubrication
Definitions
- the invention relates to a vehicle brake system piston pump, in which a piston by means of an eccentric is movable back and forth, between the piston and the eccentric a friction surface is formed and on the friction surface, a lubricant is provided.
- Vehicles especially passenger cars, are usually equipped with a vehicle brake system with at least one wheel brake for braking a wheel of this vehicle.
- the wheel brake is often designed hydraulically and is of a fluid or brake fluid, which is located within a fluid line, flowed.
- a switched into the fluid line hydraulic unit sets the fluid by means of an associated
- Vehicle brake system piston pump under pressure It comes in
- slidable piston is used, which is driven by an eccentric.
- the eccentric runs in an eccentric space.
- the eccentric thus converts its rotating movement into a linear movement of the piston.
- the eccentric rubs against a face of the piston acting as a friction surface.
- a lubricant is provided to reduce friction.
- a lubricating film of oil or grease between the piston and the eccentric is usually formed.
- a lubricant as known from DE 697 23 040, a layer of a self-lubricating material is provided.
- a vehicle brake system piston pump in which a piston can be moved back and forth by means of an eccentric, a friction surface is formed between the piston and the eccentric, and a lubricant is provided on the friction surface.
- the lubricant is as a
- the lubricant between the piston and the eccentric serves to reduce friction on the friction surface. Since the lubricant consumes or the lubricating layer wears, the amount of the lubricant or the thickness of the lubricating layer determines the
- the vehicle brake system piston pump according to the invention has
- Lubricant that is designed as a pourable dry substance.
- Bulkable refers to a particulate or granular mixture that is to be moved in a space or container.
- the property of bulkability is determined by the particle size, the particle distribution, the bulk density, the
- Angle of repose which determines humidity and temperature.
- the moisture is low in the lubricant according to the invention or the lubricant is formed as a dry matter.
- the dry matter of this type is located at or in the vicinity of the friction surface between the piston and the eccentric.
- the dry matter passes between eccentric and piston.
- On the friction surface individual particles or grains of the lubricant are placed between the piston and the eccentric, thus forming a friction-reducing lubricating effect.
- the particles are usually arranged side by side on the friction surface.
- the pourability of the lubricant according to the invention makes it possible for other particles to reach the friction surface over and over again. At the same time that is
- the eccentric is advantageously arranged in an eccentric space in which the lubricant is retained.
- the vehicle brake system piston pump is designed such that the lubricant in the
- the eccentric rotates with a shaft, wherein the center of gravity of the eccentric lies outside the axis of rotation of this shaft.
- Around the eccentric around the eccentric space is formed, which surrounds the eccentric.
- the inventive dry and at the same time pourable lubricant is advantageously circulated in this way.
- the eccentric space thus serves as a storage space and at the same time as a circulation space for the lubricant.
- the lubricant has such a strength that it is deformable between the piston and the eccentric.
- Strength is the property of a substance, in this case the lubricant, to deform under a force.
- the strength is advantageous so that the lubricant is crushed or crushed during movement of the eccentric and piston between the piston and the eccentric.
- the individual particles of the lubricant according to the invention are thereby pressed flat and increase their areal extent.
- the thus enlarged areal extent of the individual particles of the lubricant increases overall the surface of the lubricating layer between the piston and the eccentric.
- each individual particle acts as a "platelike" platelet, these platelets in particular lying next to one another and thus forming a lubricating layer, by means of which the piston is spaced from the eccentric.
- the lubricant is formed so that the lubricant is formed of a plurality of particles, each having a spherical shape.
- the spherical shape of the individual particles allows a particularly easy-flowing, advantageous moving of the lubricant within the eccentric space by means of the Eccentric.
- the individual spherical particles roll off each other as the particles move.
- the lubricant is formed so that the lubricant is formed from a plurality of particles, each having a lens shape.
- a lens mold represents a deformed sphere in which two opposite sides of the sphere are flattened. In optics, this lens shape is also referred to as a biconvex lens. In the present case, the lens shape has the advantage that the associated particles more easily slip between the eccentric and the piston due to the flattened shape.
- Another advantage is that a lenticular particle rests with the flattened sides between the piston and the eccentric.
- the lens thus arranged is further deformed by the piston and cylinder into a disk.
- the lubricant is made of polytetrafluoroethylene.
- Polytetrafluoroethylene also known as PTFE, is advantageously suitable herein as a dry lubricant, since PTFE has a very low dynamic coefficient of friction of 0.07 (in words: zero point zero seven).
- the lubricant formed with PTFE is advantageously provided with additives, in particular graphite.
- the lubricant according to the invention preferably has a shore
- Hardness D is between 50 and 80 (in words: between fifty and eighty), especially between 55 and 70 (in words: between fifty-five and seventy). To measure the Shore D hardness is determined by means of a
- the lubricant according to the invention is thus advantageously designed as a pourable dry substance.
- the lubricant preferably consists of a plurality of particles, each having a spherical shape or lens shape.
- the lubricant is made of polytetrafluoroethylene (PTFE).
- the lubricant is made of molybdenum (IV) sulfide or perfluoroalkoxy polymer (PFA).
- Other advantageous materials are polyetheretherketone (PEEK) or a special form of polyethylene ultrahigh molecular weight high density polyethylene (PE-UHMW).
- PEEK polyetheretherketone
- PE-UHMW polyethylene ultrahigh molecular weight high density polyethylene
- the lubricant according to the invention is advantageously also designed as a mixture of different lubricants.
- the invention is accordingly further directed to a use of such lubricant according to the invention in a vehicle brake system piston pump.
- Fig. 2 is a partial longitudinal section of an inventive
- FIG. 3 is a detail view of a first variant of FIG. 2,
- FIG. 4 is a detail view of a second variant of FIG. 2,
- Fig. 1 shows a portion of a vehicle brake system piston pump 10 which serves to generate hydraulic pressure on wheel brakes of a vehicle.
- the pressure is generated by means of the vehicle brake system piston pump 10 by a piston 12 moves into a pressure chamber 14 while a
- Liquid 16 is pressurized relative to the environment.
- the movement of the piston 12 is generated by means of an eccentric 18, which rotates in an eccentric space 20.
- the eccentric 18 is coupled to a rotatable eccentric shaft 22 stationary. The eccentric 18 converts so the
- the eccentric 18 is eccentrically mounted on the eccentric shaft 22, which means that its gravity point 24 is located outside the axis 26 of the eccentric shaft 22. In this arrangement is within the eccentric space 20 between the
- Eccentric 18 and an inner wall 28 of the eccentric 20 a cavity 30 is formed. This cavity 30 changes during the movement of the eccentric 18 on the eccentric shaft 22 its shape.
- the lubricant 34 is formed in a conventional manner as a grease.
- the grease lubricates during a movement of the
- a structurally similarsammlungmsanlagen- piston pump 10 is illustrated, in which according to the invention, the lubricant 32 is formed as a pourable dry matter 36.
- the dry matter 36 comprises a multiplicity of particles 38 which, according to FIGS. 2 and 3, each have a spherical shape.
- FIG. 4 shows the dry matter 36 in an embodiment in which the particles 38 each have a lens shape.
- the dry substance 36 is mounted within the eccentric space 20.
- the dry matter 36 is conveyed to the friction surface 32 between the pistons 12 and the eccentric 18 during the movement of the eccentric 18.
- the individual particles 38 of the dry substance 36 are between the piston 12 and the eccentric 18 compressed.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Fluid Mechanics (AREA)
- Physics & Mathematics (AREA)
- Organic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Transportation (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Lubricants (AREA)
- Braking Arrangements (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
- Reciprocating Pumps (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2019504856A JP2019525059A (en) | 2016-08-01 | 2017-05-10 | Vehicle brake device piston pump with lubrication means |
CN201780047442.3A CN109563820A (en) | 2016-08-01 | 2017-05-10 | Vehicle brake apparatus-piston pump with lubriation material |
KR1020197003047A KR20190033547A (en) | 2016-08-01 | 2017-05-10 | Vehicle brake system piston pump including lubricant |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016214127.9A DE102016214127A1 (en) | 2016-08-01 | 2016-08-01 | Vehicle brake system piston pump with a lubricant |
DE102016214127.9 | 2016-08-01 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2018024381A1 true WO2018024381A1 (en) | 2018-02-08 |
Family
ID=58709456
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2017/061147 WO2018024381A1 (en) | 2016-08-01 | 2017-05-10 | Vehicle brake system piston pump comprising a lubricant |
Country Status (5)
Country | Link |
---|---|
JP (1) | JP2019525059A (en) |
KR (1) | KR20190033547A (en) |
CN (1) | CN109563820A (en) |
DE (1) | DE102016214127A1 (en) |
WO (1) | WO2018024381A1 (en) |
Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1433299A1 (en) * | 1963-12-18 | 1969-03-20 | Centre Nat Rech Scient | lubricant |
DE19904926A1 (en) * | 1999-02-06 | 2000-08-10 | Bosch Gmbh Robert | Pump unit for a slip-controlled, hydraulic vehicle brake system |
DE69723040T2 (en) | 1996-12-23 | 2004-05-06 | Robert Bosch Gmbh | Radial piston pump, in particular fuel pump for an internal combustion engine |
EP1876220A1 (en) * | 2005-03-30 | 2008-01-09 | FUJIFILM Corporation | Lubricant composition |
DE102009001314A1 (en) * | 2009-03-04 | 2010-09-09 | Robert Bosch Gmbh | Drive for high-pressure pump i.e. fuel injection pump, of internal-combustion engine in motor vehicle, has roller cooperating with cam, where roller is rotatably supported in edge-open recess of roller shoe |
WO2012055821A1 (en) * | 2010-10-25 | 2012-05-03 | Aktiebolaget Skf | Lubricant thickened with oleophilic fibers |
US20140024564A1 (en) * | 2012-07-19 | 2014-01-23 | Climax Engineered Materials, Llc | Spherical Copper/Molybdenum Disulfide Powders, Metal Articles, and Methods for Producing Same |
US20150368577A1 (en) * | 2013-02-06 | 2015-12-24 | Daikin Industries, Ltd. | Solid particle, solid lubricant, and metal member |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6110991U (en) * | 1984-06-25 | 1986-01-22 | トヨタ自動車株式会社 | Ceramics vane pump |
JPS62251480A (en) * | 1986-04-24 | 1987-11-02 | Ishikawajima Harima Heavy Ind Co Ltd | Powder lubrication compressor |
US6814561B2 (en) * | 2001-10-30 | 2004-11-09 | Scimed Life Systems, Inc. | Apparatus and method for extrusion of thin-walled tubes |
US7314898B2 (en) * | 2004-12-29 | 2008-01-01 | 3M Innovative Properties Company | Microsphere-filled polytetrafluoroethylene compositions |
JP2010037991A (en) * | 2008-08-01 | 2010-02-18 | Taiho Kogyo Co Ltd | Shoe |
CN104747414A (en) * | 2013-12-31 | 2015-07-01 | 上海三电贝洱汽车空调有限公司 | Slider |
-
2016
- 2016-08-01 DE DE102016214127.9A patent/DE102016214127A1/en not_active Withdrawn
-
2017
- 2017-05-10 WO PCT/EP2017/061147 patent/WO2018024381A1/en active Application Filing
- 2017-05-10 CN CN201780047442.3A patent/CN109563820A/en active Pending
- 2017-05-10 JP JP2019504856A patent/JP2019525059A/en active Pending
- 2017-05-10 KR KR1020197003047A patent/KR20190033547A/en not_active Application Discontinuation
Patent Citations (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1433299A1 (en) * | 1963-12-18 | 1969-03-20 | Centre Nat Rech Scient | lubricant |
DE69723040T2 (en) | 1996-12-23 | 2004-05-06 | Robert Bosch Gmbh | Radial piston pump, in particular fuel pump for an internal combustion engine |
DE19904926A1 (en) * | 1999-02-06 | 2000-08-10 | Bosch Gmbh Robert | Pump unit for a slip-controlled, hydraulic vehicle brake system |
EP1876220A1 (en) * | 2005-03-30 | 2008-01-09 | FUJIFILM Corporation | Lubricant composition |
DE102009001314A1 (en) * | 2009-03-04 | 2010-09-09 | Robert Bosch Gmbh | Drive for high-pressure pump i.e. fuel injection pump, of internal-combustion engine in motor vehicle, has roller cooperating with cam, where roller is rotatably supported in edge-open recess of roller shoe |
WO2012055821A1 (en) * | 2010-10-25 | 2012-05-03 | Aktiebolaget Skf | Lubricant thickened with oleophilic fibers |
US20140024564A1 (en) * | 2012-07-19 | 2014-01-23 | Climax Engineered Materials, Llc | Spherical Copper/Molybdenum Disulfide Powders, Metal Articles, and Methods for Producing Same |
US20150368577A1 (en) * | 2013-02-06 | 2015-12-24 | Daikin Industries, Ltd. | Solid particle, solid lubricant, and metal member |
Also Published As
Publication number | Publication date |
---|---|
DE102016214127A1 (en) | 2018-02-01 |
KR20190033547A (en) | 2019-03-29 |
JP2019525059A (en) | 2019-09-05 |
CN109563820A (en) | 2019-04-02 |
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