EP0935711A1 - Chapeau de soupape pour reduire l'espace mort dans des pompes a pistons radiaux destinees a des systemes de freinage de vehicules - Google Patents

Chapeau de soupape pour reduire l'espace mort dans des pompes a pistons radiaux destinees a des systemes de freinage de vehicules

Info

Publication number
EP0935711A1
EP0935711A1 EP98943656A EP98943656A EP0935711A1 EP 0935711 A1 EP0935711 A1 EP 0935711A1 EP 98943656 A EP98943656 A EP 98943656A EP 98943656 A EP98943656 A EP 98943656A EP 0935711 A1 EP0935711 A1 EP 0935711A1
Authority
EP
European Patent Office
Prior art keywords
piston
piston pump
holding part
pump according
spring
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.)
Withdrawn
Application number
EP98943656A
Other languages
German (de)
English (en)
Inventor
Heinz Siegel
Dieter Merklein
Joachim Ehrlich
Andreas Weh
Michael Hellebrandt
Tobias Fluck
Michael Schlitzkus
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP0935711A1 publication Critical patent/EP0935711A1/fr
Withdrawn legal-status Critical Current

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
    • F04B1/0421—Cylinders
    • 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
    • B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
    • B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
    • B60T13/12—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid
    • B60T13/16—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being liquid using pumps directly, i.e. without interposition of accumulators or reservoirs
    • B60T13/168—Arrangements for pressure supply
    • 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
    • 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
    • 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
    • F04B53/10—Valves; Arrangement of valves
    • F04B53/12—Valves; Arrangement of valves arranged in or on pistons
    • F04B53/125—Reciprocating valves
    • F04B53/126—Ball valves
    • 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
    • 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
    • F04B53/148—Pistons, piston-rods or piston-rod connections the piston being provided with channels which are coacting with the cylinder and are used as a distribution member 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
    • 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
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2225/00—Synthetic polymers, e.g. plastics; Rubber

Definitions

  • VALVE ADAPTER FOR REDUCING THE DEAD SPACE IN RADIAL PISTON PUMPS FOR VEHICLE BRAKE SYSTEMS
  • the invention relates to a piston pump according to the type of the main claim, which is provided in particular for a hydraulic vehicle brake system with a slip control device.
  • Such a piston pump is known for example from DE 44 07 978 A1.
  • the known piston pump has a piston which can be driven to a reciprocating stroke movement. During its stroke movement, the piston reduces and increases a volume of a displacement space of the piston pump. When the volume of the displacement space is reduced, fluid is displaced; this is a delivery stroke of the piston pump. When the volume of the displacement space is increased, fluid is sucked in; this is a suction stroke of the piston pump.
  • the piston pump according to the invention with the features of the main claim has a displacement body which is arranged in the displacement space.
  • This displacement body reduces an available volume of the displacement space, it is in particular designed so that a residual or dead volume remaining at the end of the delivery stroke is as small as possible. This improves the efficiency of the piston pump according to the invention.
  • the piston pump is provided in particular as a pump in a brake system of a vehicle and is used to control the pressure in wheel brake cylinders.
  • ABS or ASR or FDR or EHB are used for such brake systems.
  • the pump is used, for example, to return brake fluid from a wheel brake cylinder or from several wheel brake cylinders to a master brake cylinder (ABS) and / or to convey brake fluid from a reservoir into a wheel brake cylinder or into several wheel brake cylinders (ASR or FDR or EHB) .
  • the pump is required, for example, in a brake system with wheel slip control (ABS or ASR) and / or in a brake system (FDR) serving as a steering aid and / or in an electro-hydraulic brake system (EHB).
  • Wheel slip control can, for example, prevent the wheels of the vehicle from locking during braking when the brake pedal (ABS) is pressed hard and / or the driven wheels of the vehicle are spinning when the accelerator pedal (ASR) is pressed hard.
  • brake pressure is built up in one or more wheel brake cylinders independently of an actuation of the brake pedal or accelerator pedal, for example in order to prevent the vehicle from breaking out of the lane desired by the driver.
  • the pump can also be used in an electrohydraulic brake system (EMS) in which the pump delivers the brake fluid into the wheel brake cylinder or in the wheel brake cylinders when an electric brake pedal sensor detects an actuation of the brake pedal or in which the pump for filling a memory of the brake system serves.
  • EMS electrohydraulic brake system
  • FIG. 1 and 2 show axial sections of two exemplary embodiments of piston pumps according to the invention
  • FIG. 3 shows an end view of a holding part of the piston pump shown in FIG. 2
  • FIG. 4 shows a modification of the piston pump shown in FIG.
  • the piston pump according to the invention shown in FIG. 1, designated overall by 10, has a pin-shaped piston 12 which is axially displaceably guided in a plastic bushing 14.
  • the liner 14 is inserted into a hydraulic block of a hydraulic vehicle brake system, which is not otherwise shown, which forms a pump housing 16.
  • further hydraulic components such as solenoid valves (not shown) are inserted and hydraulically connected to one another and to the piston pump 10.
  • Pump housing 16 is fixed in this.
  • the liner 14, the piston 12 and the closure element 18 enclose a displacement space 22 of the piston pump 10.
  • a helical compression spring is arranged as a piston return spring 24, which is supported on the closure element 18 and which supports the piston 12 against a peripheral surface of an eccentric 26 which can be driven by an electric motor presses, by means of which the piston 12 can be driven in a manner known per se to a reciprocating stroke movement in the liner 14.
  • Two spring-loaded check valves 28 are provided as inlet and outlet valves outside of the liner 14, in the hydraulic block forming the pump housing 16, which are shown symbolically in FIG.
  • the check valves 28 communicate with the displacement space 22 via a radial bore 30 in the liner 14.
  • a displacement body 32 In the interior of the piston return spring 24 there is a displacement body 32 which largely fills the interior of the piston return spring 24.
  • the displacement body 32 is pin-like, it protrudes in one piece from the closure element 18.
  • the displacement body 32 reduces the volume available in the displacement space 22 for fluid that can be pumped with the piston pump 10, in particular the volume available at the end of a delivery stroke when the piston 12 is in its most inserted position in the sleeve 14, the so-called residual volume available in the displacement chamber 22, the so-called Dead space to a minimum. This improves the efficiency of the piston pump 10. It also serves to minimize the dead space that the wire of the piston return spring has a rectangular winding cross section. Instead of a rectangular winding cross section, other cross sections, for example parallelogram or roof-shaped winding cross sections, whose facing winding surfaces are approximately complementary, can be selected in order to reduce a gap between the spring windings and thus the dead space when the piston return spring 24 is compressed.
  • the piston return spring 24 largely fills an annular space between the displacement body 32 and the liner 14.
  • the displacement body 32 can also be provided as a peg-like extension on the piston 12 and extend into the interior of the piston return spring 24 (not shown).
  • the piston pump 34 according to the invention shown in FIG. 2 is inserted into a pump housing 36 which is formed by a hydraulic block of a hydraulic vehicle brake system, which is otherwise not shown.
  • a pump housing 36 which is formed by a hydraulic block of a hydraulic vehicle brake system, which is otherwise not shown.
  • the piston pump 34 has a liner 38 with a liner base 40 which is integral with it and which is pressed into a cylinder bore 42.
  • a cylindrical sealing plug 46 is attached to the liner bottom 40 by means of a Bördeis 44. The plug 46 is fixed in the pump housing 36 by caulking 48 and closes one end of the cylinder bore 42 pressure tight.
  • a check valve is used as an outlet valve 52, which has a valve ball 54 as a valve closing body, which is pressed by a helical compression spring as a valve closing spring 56 against a conical valve seat 58, which is formed at an opening of an axial through hole 60 in the liner bottom 40 is.
  • An outlet is through a radial outlet bore 62 in the plug 46 which communicates with an outlet bore 64 in the pump housing 36.
  • a piston 66 of the piston pump 34 according to the invention is designed as a composite part with a steel core 68, which is overmolded on its circumference with a sliding jacket 70 made of plastic.
  • a suitable plastic for the sliding jacket is, for example, a fiber plastic with about 15% carbon fibers and with Teflon components, which give the sliding jacket 70 good sliding properties.
  • This end face of the steel core 68 forms a sliding surface 72, with which the piston 66 is pressed by a piston return spring 74 against a circumference of an eccentric 76 which can be driven by an electric motor and with which the piston 40 can be driven to a reciprocating stroke movement in the axial direction.
  • the sliding surface 72 is designed to be low-wear by using a low-wear material for the steel core 68 or by hardening the steel core 68.
  • the steel core 68 is an essentially cylindrical part that is very easy to produce in terms of shape.
  • the sliding jacket 70 surrounds the circumference of the steel core 68 with a hollow cylindrical section 78, it extends on an end face of the steel core 68 facing away from the eccentric 76, the steel core 68 or the piston 66 extending into the bushing 38.
  • the section 80 of the sliding jacket 70 which extends the piston 66 has a transverse hole 82 which penetrates an axial blind hole 84 which is likewise provided in the section 80 of the sliding jacket 70 which extends the piston 66.
  • the blind hole 84 widens to form a conical valve seat 86 and opens at one of the Liner bottom 40 facing end of the piston 66.
  • a check valve is used as the inlet valve 88, which has a valve ball 90 as a valve closing body, which is pressed by a helical compression spring as a valve closing spring 92 against the valve seat 86.
  • the transverse hole 82 in the piston 66 communicates through a cylindrical filter screen 94, which is attached to an open end face of the bush 38, with an inlet channel 96, which is attached radially to the piston pump 34 in the pump housing 36.
  • the valve closing spring 92 is supported on a holding part 98 which is attached to the end face of the piston 66 facing the liner bottom 40.
  • the holding part 98 has a perforated disk-shaped edge 100 which is pressed by the piston return spring 74 against the end face of the piston 66 facing it, as a result of which the holding part 98 is held on the piston 66.
  • the holding part 98 is shown in front view from the direction of the piston 66 in FIG. 3.
  • Four angled retaining webs 102 protrude from a side facing away from the piston 66 and are integral with the perforated disk-shaped edge 100.
  • the holding webs 102 hold a cylindrical displacement body 104 which is integral with them and which stands coaxially through the perforated disk-shaped edge 100 of the holding part 98.
  • the valve closing spring 92 which is supported on the holding webs 102 of the holding part 98, has, like the piston return spring 74, a rectangular winding cross section.
  • the rectangular winding cross section of these two springs 74, 92 serves to reduce the volume of the displacement space 106 of the piston pump 34, which is available to a fluid that can be pumped by the piston pump 34.
  • the dead volume of the displacement space 106 which remains with the piston 66 pushed farthest into the liner 38, is reduced by the displacement body 104 and the springs 74, 92 with their rectangular winding cross sections, thereby increasing the efficiency of the piston pump 34 according to the invention.
  • the holding part 98 has four integral parts which protrude from its perforated disk-shaped edge 100 into the blind hole 84
  • Centering fingers 108 which hold the holding part 98 coaxially on the piston 66.
  • the centering fingers 108 have an interference fit in the blind hole 84, i. H. the holding part 98 is by a
  • connection of the holding part 98 to the piston 66 serves to hold the holding part 98 against the force of the valve closing spring 92 on the piston 66 until it is inserted into the bushing 38 and the holding part 98 is held on the piston 66 by the piston return spring 74.
  • the connection of the holding part 98 to the piston 66 can, for example, also take place in a form-fitting manner by means of a snap-in or snap-in connection which is not shown, known per se, or integrally, for example by gluing.
  • the displacement body 104 limits an opening stroke of the valve ball 90 of the inlet valve 88, it forms a valve stroke limitation.
  • This valve stroke limitation reduces the force with which the valve ball 90 strikes the valve seat 86 when the inlet valve 88 closes and thereby reduces wear on the valve seat 86. This is particularly important if the valve seat 86 is formed from a soft material. As a result, a long service life is achieved in the case of a valve seat 86 which is molded from plastic, as in the exemplary embodiment shown. Since the displacement body 104 forming the valve stroke limiter is made of plastic, the valve stroke limiter can be produced with a more precise measure than a valve stroke limiter manufactured, for example, as a sheet metal deep-drawn part.
  • the holding part 98 also forms a guide and sealing element for the piston 66 of the piston pump 34 according to the invention:
  • the holding part 98 has a low, hollow-cylindrical edge 110 which, in one piece from the perforated disk-shaped edge 100 on the circumference of the piston 66, a short distance into an annular space between the piston 66 and the sleeve 38 protrudes.
  • This hollow cylindrical edge 110 and a peripheral edge of the perforated disk-shaped edge 100 of the holding part 98 guide the piston 66 in the liner 38.
  • a circumferential sealing lip 112 protrudes in one piece from the perforated disk-shaped edge 100 of the holding part 98.
  • the sealing lip 112 is also in one piece with the holding part 98.
  • An expansion ring 114 with a conical expansion surface 116 on its circumference lies between the piston return spring 74 and the sealing lip 112 of the holding part 98.
  • the expanding ring 114 is pressed in the axial direction by the piston return spring 74 against an approximately hollow-conical inner surface 118 of the sealing lip 112, in this way spreads the sealing lip 112 radially and presses it in sealing contact against an inner wall of the bushing 38 the piston return spring 74 ensures a permanently elastic expansion behavior of the sealing lip 112 and thus a permanently reliable sealing of the piston 66 in the liner 38.
  • the spreading force with which the sealing lip 112 is pressed against the inner wall of the bushing 38 can be set via the cone angles of the expanding surface 116 of the expanding ring 114 and the inner surface 118 of the sealing lip 112.
  • the holding part 98 is made of the same plastic as the sliding jacket 70, it is low-wear and has good sliding properties. The plastic holding part 98 is inexpensive to manufacture.
  • Another advantage of the holding part 98 attached to an end face of the piston 66 is that it protects this end face of the piston against damage before and during the insertion of the piston 66 into the liner 38.
  • the piston pump 120 shown in FIG. 4 is a modification of the piston pump 34 shown in FIG. 2 according to the invention.
  • the holding part 98 of FIG. 4 has no sealing lip and no hollow cylindrical edge for piston guidance.
  • the piston 66 is guided in the liner 38 directly on the outer circumference 122 of the piston 66.
  • a rubber sealing ring 124 is placed on an annular step 126 of the piston 66, with which the piston 66 engages on it tapered end located in the liner 38.
  • the perforated disk-shaped edge 100 of the holding part 98 holds the sealing ring 124 axially on the piston 66.
  • the sealing ring 124 can be pushed onto the ring step 126 before the holding part 98 is connected to the piston 66. This makes it much easier to attach the sealing ring 124 to the piston 66.
  • the piston pump 120 shown in FIG. 4 is of the same design and functions in the same way as the piston pump 34 shown in FIG. 2. To avoid repetition, the comments on FIG. 2 are referred to in this respect. The same components are labeled with the same reference numbers.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Details Of Reciprocating Pumps (AREA)

Abstract

L'invention concerne une pompe à piston (34) destinée en particulier à un système de freinage hydraulique de véhicule à antipatinage. L'invention vise à réduire l'espace mort de la pompe à piston (34). A cet effet, il est prévu de placer un corps de déplacement (104) sur le piston (66) au moyen d'un élément de retenue (98). Ce corps (104) fait saillie à l'intérieur d'un ressort de fermeture d'une soupape d'admission (88) intégrée dans le piston (66), ledit ressort se présentant sous la forme d'une vis. Ce ressort de fermeture de soupape (92) et un ressort de rappel de piston (74) à section de spire rectangulaire sont conçus de manière à réduire l'espace mort de la pompe à piston (34).
EP98943656A 1997-07-30 1998-07-08 Chapeau de soupape pour reduire l'espace mort dans des pompes a pistons radiaux destinees a des systemes de freinage de vehicules Withdrawn EP0935711A1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE19732811 1997-07-30
DE19732811 1997-07-30
DE19747850A DE19747850A1 (de) 1997-07-30 1997-10-30 Kolbenpumpe
DE19747850 1997-10-30
PCT/DE1998/001890 WO1999006704A1 (fr) 1997-07-30 1998-07-08 Chapeau de soupape pour reduire l'espace mort dans des pompes a pistons radiaux destinees a des systemes de freinage de vehicules

Publications (1)

Publication Number Publication Date
EP0935711A1 true EP0935711A1 (fr) 1999-08-18

Family

ID=26038685

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98943656A Withdrawn EP0935711A1 (fr) 1997-07-30 1998-07-08 Chapeau de soupape pour reduire l'espace mort dans des pompes a pistons radiaux destinees a des systemes de freinage de vehicules

Country Status (5)

Country Link
US (1) US20010002978A1 (fr)
EP (1) EP0935711A1 (fr)
JP (1) JP2001501282A (fr)
DE (1) DE19747850A1 (fr)
WO (1) WO1999006704A1 (fr)

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DE19924774A1 (de) * 1999-05-29 2000-11-30 Bosch Gmbh Robert Kolbenpumpe
DE10015295A1 (de) * 2000-03-28 2001-10-04 Bosch Gmbh Robert Kolbenpumpe
DE10023849B4 (de) * 2000-05-16 2005-11-17 Brueninghaus Hydromatik Gmbh Kolbenmaschine mit in Führungsbuchsen einer Zylindertrommel verschiebbar gelagerten Kolben und Führungsbuchse für eine solche Kolbenmaschine
DE10134069B4 (de) * 2001-07-13 2011-07-07 Robert Bosch GmbH, 70469 Kraftstoffpumpe für ein Kraftstoffsystem einer Brennkraftmaschine
EP1545952B1 (fr) 2002-09-24 2008-02-27 Continental Teves AG & Co. oHG Dispositif de refoulement
DE102005035082A1 (de) * 2005-07-21 2007-02-01 Ks Gleitlager Gmbh Hubring für eine Einspritzpumpe
DE102005042197A1 (de) * 2005-09-06 2007-03-08 Robert Bosch Gmbh Kolbenpumpe mit verbessertem Kolben
DE102006010674A1 (de) 2005-09-14 2007-03-15 Continental Teves Ag & Co. Ohg Kolbenpumpe
DE102006028638A1 (de) * 2006-06-22 2008-01-03 Robert Bosch Gmbh Kolbenpumpe
DE102006029368A1 (de) * 2006-06-27 2008-01-03 Robert Bosch Gmbh Kolbenpumpe für ein Fahrzeugbremssystem mit einem Dichtelement
JP4946637B2 (ja) * 2006-08-07 2012-06-06 株式会社アドヴィックス ピストンポンプ
DE102006048902A1 (de) * 2006-10-17 2008-04-30 Robert Bosch Gmbh Kolbenpumpe für ein Fahrzeugbremssystem mit einer Kolbenstange
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DE102007008261A1 (de) * 2007-02-20 2008-08-21 Robert Bosch Gmbh Hochdruckpumpe zur Förderung von Kraftstoff mit einer verbesserten Führung des Pumpenkolbens
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DE102007047418A1 (de) 2007-10-04 2009-04-23 Robert Bosch Gmbh Kolbenpumpe zur Förderung eines Fluids und zugehöriges Bremssystem
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DE102007052756A1 (de) * 2007-11-06 2009-05-07 Robert Bosch Gmbh Kunststoffelement, Kolbenpumpe sowie Montageverfahren
DE102007054097A1 (de) * 2007-11-13 2009-05-14 Robert Bosch Gmbh Pumpenelement, Hydraulikblock mit Pumpenelement sowie Montageverfahren
DE102009046313A1 (de) * 2009-11-03 2011-05-05 Robert Bosch Gmbh Kolbenanordnung einer Kolbenpumpe
DE102010039507A1 (de) * 2010-08-19 2012-02-23 Robert Bosch Gmbh Kolbenführungselement
DE102012207000A1 (de) * 2012-04-27 2013-10-31 Continental Teves Ag & Co. Ohg Kolbenpumpe
DE102017212498A1 (de) * 2017-07-20 2019-01-24 Robert Bosch Gmbh Kolbenpumpe, insbesondere Kraftstoff-Hochdruckpumpe für eine Brennkraftmaschine
CN107816432B (zh) * 2017-09-30 2019-11-19 简式国际汽车设计（北京）有限公司 一种柱塞泵

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JP2001501282A (ja) 2001-01-30
DE19747850A1 (de) 1999-02-04
WO1999006704A1 (fr) 1999-02-11
US20010002978A1 (en) 2001-06-07

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