WO2013053593A1 - Culasse en deux parties pour pompe à carburant haute pression, dotée d'un clapet anti-retour - Google Patents

Culasse en deux parties pour pompe à carburant haute pression, dotée d'un clapet anti-retour Download PDF

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Publication number
WO2013053593A1
WO2013053593A1 PCT/EP2012/068826 EP2012068826W WO2013053593A1 WO 2013053593 A1 WO2013053593 A1 WO 2013053593A1 EP 2012068826 W EP2012068826 W EP 2012068826W WO 2013053593 A1 WO2013053593 A1 WO 2013053593A1
Authority
WO
WIPO (PCT)
Prior art keywords
component
valve plate
cylinder head
valve
cylindrical cavity
Prior art date
Application number
PCT/EP2012/068826
Other languages
German (de)
English (en)
Inventor
Friedrich Boecking
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 WO2013053593A1 publication Critical patent/WO2013053593A1/fr

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
    • 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
    • F04B53/007—Cylinder heads
    • 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
    • F04B1/0421—Cylinders
    • 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
    • F04B53/16—Casings; Cylinders; Cylinder liners or heads; Fluid connections
    • 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
    • F04B53/22—Arrangements for enabling ready assembly or disassembly

Definitions

  • Two-piece cylinder head for a high-pressure fuel pump with integrated non-return valve Two-piece cylinder head for a high-pressure fuel pump with integrated non-return valve
  • the inventive design of the cylinder head allows improved functionality of the check valve, which a backflow of the fuel from the high-pressure chamber more effective than in known
  • the modular construction of the cylinder head allows easier interchangeability, e.g. the valve plate with the individual valves. Furthermore, manufacturing costs of the cylinder head can be saved because the manufacturing process is simplified by the modular design of the cylinder head.
  • the cylinder head may be used in high-pressure fuel pumps used in fuel injectors for injecting fuel into a combustion chamber of an internal combustion engine.
  • the corresponding fuel injection devices can be used, for example, in motor vehicles such as cars and in particular in commercial vehicles such as trucks.
  • the cylinder head according to the invention and the corresponding High-pressure fuel pump can be used in systems with fuel pressure accumulator, also referred to as "rail" or common rail injection.
  • fuel pressure accumulator systems fuel, e.g. Gasoline or diesel, by means of a high-pressure fuel pump from a fuel tank, in particular from the fuel tank or a storage pot in a fuel pressure accumulator G.Raü "promoted.” There, the fuel is stored under high pressure to the fuel pressure accumulator one or in the In principle, a plurality of fuel injection devices can be connected, which can inject the fuel directly into combustion chambers assigned to them The fuel injection device can be connected to an electronic control unit or to a control unit which regulates the injection time and the injection quantity, for example via an electrically actuated valve ,
  • the cylinder head may have one or more suction and check valves.
  • the cylinder head is arranged on a housing of the high-pressure fuel pump.
  • a valve plate is integrated, in which at least one suction valve and a check valve are incorporated or arranged.
  • the suction valve can suck fuel via an inlet from the fuel tank and a
  • Check valve as a pressure relief valve, which opens in the direction of the high-pressure chamber to be executed. At the check valve may also be provided a stroke stop.
  • the check valve is integrated parallel to the suction valve in the valve plate. That is, both valves are arranged spatially parallel to each other. hydraulic However, the valves are considered in series, ie arranged one behind the other. In particular, the check valve is arranged downstream of the suction valve. The valves may be arranged eccentrically in the valve plate. This means that neither the suction valve nor the check valve must be positioned centrally on the valve plate.
  • the cylinder head has a first component and a separately manufactured second component.
  • the first component has a first cylindrical cavity, also referred to as a pump working space or as a high-pressure bore.
  • the cavity is used to guide a first cylindrical cavity
  • the first component may e.g. be carried out as a forging blank relatively small, which reduces the cost of the cured material. Furthermore, the shape of the first component in
  • the second component does not have to be hardened and can be made of cheaper material.
  • the two-part embodiment of the cylinder head allows the modular design and integration of the valve plate in the cylinder head.
  • the first component has an annular step, also referred to as a cylinder head ring.
  • the shoulder has a larger radial dimension in a plane perpendicular to the longitudinal axis of the first component than the remaining first component. That is, the first component has a longitudinal axis, which coincides in particular with the longitudinal axis of the cylindrical cavity in the first component. If sectional planes perpendicular to this longitudinal axis are formed by the first component of the cylinder head, then the cross-sectional area or the radius of the first component in the sectional plane which runs through the shoulder is greatest.
  • Component has a bearing surface, which corresponds in a radial dimension of the radial dimension of the paragraph and is designed to receive the paragraph.
  • the paragraph thus defines together with the contact surface the positioning of the first and the second component in relation to each other.
  • the second component has a second cylindrical cavity, also referred to above as a recess.
  • the longitudinal axis of the second cavity coincides with a
  • the valve plate corresponds in its radial dimension to a radial dimension of the second cylindrical cavity and is arranged in the second cylindrical cavity. That The valve plate can be inserted precisely into the second cavity and rest on the first component.
  • a pressure pipe socket is provided on the cylinder head, which corresponds in its radial dimension of the radial dimension of the second cylindrical cavity and is arranged in the second cylindrical cavity.
  • the valve plate is arranged between the first component and the pressure pipe socket.
  • the pressure pipe socket is designed to engage positively and / or non-positively with the second component and to press the valve plate in the direction of the first component. That is the Pressure pipe socket acts as a clamping element.
  • a thread may be provided in the corresponding region of the second cavity with which an external thread of the pressure pipe socket can engage.
  • a recess may be provided which connects the check valve with the high-pressure chamber.
  • the valve plate has a first valve plate element and a separate second valve plate element.
  • the suction valve and the check valve are arranged in the first valve plate element.
  • the second valve plate element has a first one
  • the first recess hydraulically connects the first cylindrical cavity of the first component to the suction valve, and the second recess connects the first
  • the valve plate has a separate third valve plate element which has a third recess which connects the check valve to the high-pressure chamber.
  • the first valve plate element is thus arranged between the second and third valve plate element.
  • the radial dimensions of all the valve plate elements are adapted to the radial dimensions of the second cavity.
  • Expansion of the valve plate elements in the axial direction may be variable.
  • the axial extent or height of the second valve plate element can be selected such that when the first valve plate element rests on the second valve plate element, provided in the second component
  • Inlet opening is located exactly at the height of a Setzventileinlasses.
  • Recesses in the second and third valve plate element can as
  • valve element and also of the cylinder head is advantageous since the production of the individual parts is less complicated and less complicated. Furthermore, the individual parts can be easily replaced if necessary.
  • Valve plate element by means of at least one pin with the second
  • Valve plate element connected.
  • the first valve plate element is further connected by means of at least one pin to the third valve plate element.
  • a high-pressure fuel pump for a fuel injection device is presented.
  • the fuel injection device the
  • Fig. 2 shows a cross section through a section of the
  • Fig. 1 shows a fuel injection device 1, e.g. to the
  • a high-pressure fuel pump 43 also referred to as a fuel delivery device, delivers fuel from a fuel reservoir 41 into a high-pressure chamber 9, also referred to as a fuel pressure accumulator or rail.
  • High-pressure fuel pump 43 may be provided with a multi-part cylinder head 7 according to the invention.
  • At the high-pressure chamber 9 is at least one injection element 6 is arranged.
  • FIG. 2 shows an enlarged section of the high-pressure fuel pump 43 with a two-part cylinder head 7 and a modular valve plate 27.
  • the production of the cylinder head 7 according to the invention is much simpler and cheaper than that of the known cylinder heads.
  • the check valve 31, which is integrated or embedded together with the suction valve 29 in the valve plate 27 is optimally functional.
  • the pressurized fuel then passes out of the pump working chamber 47 through the check valve 31 and a
  • the second component 13 is designed as a flange which is arranged outside annularly and concentrically around the first component 1 1 and allows attachment of the cylinder head 7 on the housing 19 of the high-pressure fuel pump 43 by means of screws 59.
  • the second component 13 has a second one
  • Valve plate 27 are arranged.
  • the first component 1 1 is seated with an annular shoulder 21 in the second designed as a flange member 13.
  • the paragraph 21 is greater in a plane perpendicular to the longitudinal axis 23 of the first member 11 than the rest of the first component 11.
  • the paragraph 21 is located on a Support surface 22 which is provided on the second component 13 for this purpose.
  • the individual modules of the valve plate 27 rest on the first component 1 1 following the pump working chamber 47. On the valve plate 27 follows in the second
  • the pressure pipe socket 33 presses the elements located in the second cylindrical cavity 16 of the second component 13 against the first component 11 and against the housing 19.
  • the valve plate 27 is modular and has a first valve plate member 35 and a respective separate second valve plate member 37 and third valve plate member 39.
  • the suction valve 29 and the check valve 31 are disposed in the first valve plate member 35.
  • the check valve 31 is guided and has a Hubanschlagplatte 45.
  • the suction valve 29 is guided as an outward-opening valve (A-valve) in the first valve plate member 35.
  • the third valve plate element 39 has a third recess 55, which connects the check valve 31 with a recess in the pressure pipe socket 33 and thus with the high-pressure chamber 9.
  • valve plate members 35, 37, 39 are connected together by pins 57 and in particular thereby positioned and aligned with respect to each other.
  • the cylinder head assembly consisting of the first component 1 1, second component 13, the valve plate 27 with the individual
  • the high-pressure fuel pump 43 according to the invention and in particular the two-part or multi-part design of the cylinder head 7 allows a simple symmetrical design of the cylinder head 7 and in particular of the first component 1 1 of the cylinder head 7.
  • the Anflanschfunktion is taken over by a separately executed second component 13. This leads to a simplification of the manufacturing process and to considerable

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

L'invention concerne une culasse (7) pour une pompe à carburant haute pression (43) d'un système d'injection de carburant (1). Ladite culasse (7) est en liaison hydraulique avec une chambre haute pression (9) et présente un raccord de soupape (27) en liaison hydraulique avec la chambre haute pression (9). Une soupape d'aspiration (29) et un clapet anti-retour (31) sont montés en parallèle dans le raccord de soupape (27).
PCT/EP2012/068826 2011-10-10 2012-09-25 Culasse en deux parties pour pompe à carburant haute pression, dotée d'un clapet anti-retour WO2013053593A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011084193.8 2011-10-10
DE201110084193 DE102011084193A1 (de) 2011-10-10 2011-10-10 Zweiteiliger Zylinderkopf für eine Kraftstoffhochdruckpumpe mit integriertem Rückschlagventil

Publications (1)

Publication Number Publication Date
WO2013053593A1 true WO2013053593A1 (fr) 2013-04-18

Family

ID=47008553

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2012/068826 WO2013053593A1 (fr) 2011-10-10 2012-09-25 Culasse en deux parties pour pompe à carburant haute pression, dotée d'un clapet anti-retour

Country Status (2)

Country Link
DE (1) DE102011084193A1 (fr)
WO (1) WO2013053593A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105570116A (zh) * 2016-01-25 2016-05-11 辽宁广惠智能装备有限公司 大排量水切割增压器

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114962200B (zh) * 2022-05-11 2023-05-23 哈尔滨工业大学（深圳） 一种多倍频凸轮数字泵

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1297479B (de) * 1968-02-28 1969-06-12 Brueckner Alfred Zylinderkopf einer Hochdruckkolbenpumpe fuer Fluessigkeiten
US4773833A (en) * 1987-04-13 1988-09-27 Apv Gaulin, Inc. High pressure homogenizer pump
FR2925623A1 (fr) * 2007-12-21 2009-06-26 Danfoss Commercial Compressors Culasse pour compresseur frigorifique a piston, unite de compression comprenant cette culasse, et compresseur frigorifique a piston comprenant cette unite de compression

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1297479B (de) * 1968-02-28 1969-06-12 Brueckner Alfred Zylinderkopf einer Hochdruckkolbenpumpe fuer Fluessigkeiten
US4773833A (en) * 1987-04-13 1988-09-27 Apv Gaulin, Inc. High pressure homogenizer pump
FR2925623A1 (fr) * 2007-12-21 2009-06-26 Danfoss Commercial Compressors Culasse pour compresseur frigorifique a piston, unite de compression comprenant cette culasse, et compresseur frigorifique a piston comprenant cette unite de compression

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105570116A (zh) * 2016-01-25 2016-05-11 辽宁广惠智能装备有限公司 大排量水切割增压器

Also Published As

Publication number Publication date
DE102011084193A1 (de) 2013-04-11

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