EP1479903B1 - pompe à pistons, en particulier pompe d'essence à haute pression - Google Patents

pompe à pistons, en particulier pompe d'essence à haute pression Download PDF

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Publication number
EP1479903B1
EP1479903B1 EP20040007021 EP04007021A EP1479903B1 EP 1479903 B1 EP1479903 B1 EP 1479903B1 EP 20040007021 EP20040007021 EP 20040007021 EP 04007021 A EP04007021 A EP 04007021A EP 1479903 B1 EP1479903 B1 EP 1479903B1
Authority
EP
European Patent Office
Prior art keywords
piston pump
pressure fuel
pump
casing
fuel piston
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.)
Expired - Lifetime
Application number
EP20040007021
Other languages
German (de)
English (en)
Other versions
EP1479903A1 (fr
Inventor
Heinz Siegel
Thomas Jackisch
Siamend Flo
Andreas Utler
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
Priority to EP11153643.9A priority Critical patent/EP2312148B1/fr
Priority to EP11153765.0A priority patent/EP2312149B1/fr
Publication of EP1479903A1 publication Critical patent/EP1479903A1/fr
Application granted granted Critical
Publication of EP1479903B1 publication Critical patent/EP1479903B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • F04B53/22—Arrangements for enabling ready assembly or disassembly
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
    • F02M59/445—Selection of particular materials
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
    • F02M59/48—Assembling; Disassembling; Replacing
    • 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
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/24—Fuel-injection apparatus with sensors

Definitions

  • the invention relates to a piston pump, in particular high-pressure fuel pump, with a housing and with at least one laterally attached to the housing component.
  • a piston pump of the type mentioned is known from the market. It is used, for example, in fuel systems with direct fuel injection. In such systems, the fuel is compressed by a high pressure pump to a very high pressure and delivered to a fuel rail.
  • the high pressure piston pump includes a cylinder in which a piston is reciprocably received. During this movement of the piston, fuel taken up in a working space is compressed. The fuel enters the working space via an inlet port, and from the high pressure piston pump to the fuel manifold via an outlet port.
  • the two nozzles are on the Cylinder, which has a round outer cross section, screwed into side holes. The lateral surface of the cylinder is turned flat in the area of the holes.
  • the housing in the known high-pressure piston pump is made of steel. This is necessary in order to use the high-pressure piston pump with such fuels, which are ethanolhaltig.
  • US 2,573,344 describes a fuel injector with a one-piece steel housing whose outer cross-section is square.
  • the object underlying the present invention is achieved in a piston pump of the type mentioned above in that the housing has a polygonal cross-sectional shape with at least partially straight side surfaces, and that at least one component is arranged in the region of a straight side surface.
  • a component to be mounted on the housing can be easily arranged.
  • the straight side surfaces provide ideal interfaces for most types of components to be attached.
  • An additional processing of the side surfaces for the integration of a component can be omitted. This lowers the manufacturing costs of the housing.
  • tools which introduce radially extending holes in the housing or edit there existing holes to be positioned more accurately and faster on the straight side surfaces which increases the manufacturing quality of the piston pump according to the invention.
  • Round profiles are available in a wide variety of diameters and material qualities, which facilitates the production of a piston pump which is tailored precisely to the specific requirements of the particular application.
  • Standard polygonal profiles, especially as commonly drawn starting materials are inexpensive, so that in this embodiment of the piston pump according to the invention, the production costs are low.
  • the side surfaces are at least approximately the same size. This increases the flexibility of the housing since basically any component can be placed on each side surface.
  • the housing has the shape of a symmetrical polygonal cross-section, in particular of a hexagon, in cross-section.
  • the opposing side surfaces are arranged parallel to each other. This facilitates the positioning of the housing during processing.
  • the support of forces that must be applied during processing or during the attachment of components on a side surface on this is simplified in this embodiment of the piston pump.
  • a hexagon offers with six side surfaces a sufficient number of possible connection points for components, at the same time still low production costs.
  • the invention has an effect if the housing is made of stainless steel.
  • the processing of stainless steel is relatively expensive and time-consuming and consuming. Since complex machining steps can be dispensed with in the piston pump according to the invention especially when using stainless steel, the costs significantly reduced.
  • At least one component arranged on a side surface is a pressure sensor.
  • the straight side surfaces of the piston pump according to the invention are particularly well suited for mounting a commercially available pressure sensor. Already this reduces the costs considerably.
  • those components which have a fluid connection and those components which have an electrical connection, at least approximately opposite each other. This facilitates the assembly and the sensible arrangement of the fluid or electrical lines.
  • an internal combustion engine carries the reference numeral 10. It comprises a fuel system 12 to which a fuel tank 14 belongs.
  • a prefeed pump 16 conveys to a high-pressure piston pump 18.
  • this has an inlet pipe 20.
  • the high-pressure piston pump 18 with a fuel manifold 24, in which the fuel is stored under high pressure.
  • a plurality of fuel injectors 26 are connected, which inject the fuel directly into them associated combustion chambers 28.
  • the high pressure piston pump 18 is placed directly on in FIG. 1 not shown manner driven by a camshaft of the internal combustion engine 10.
  • an electromagnetic actuator 30 is provided in the high-pressure piston pump 18, which operates on an in FIG. 1 invisible inlet valve of the high-pressure piston pump 18 acts.
  • the entirety of electromagnetic actuator 30 and inlet valve of the high-pressure pump-piston pump 18 is also referred to as a quantity control valve.
  • the high-pressure piston pump 18 comprises an elongated housing 34 which is made of stainless steel and in which a cylinder liner 36 and a reciprocating piston 38 are received in this.
  • the housing 34 is made of a commercial drawn hexagonal profile 39 having a total of six substantially straight side surfaces 40a to 40f. Alternatively, the straight side surfaces could also be made by turning.
  • the cylinder liner 36 and the piston 38 are arranged in a blind bore 42 which extends in the central axis of the hexagonal profile 39.
  • the blind bore 42 and the piston 38 define a working space 44th
  • a stepped bore 46 is introduced, which can communicate via an inlet valve, not shown, with the working space 44 and in which the inlet port 20 is inserted. It is welded to the housing 34 in FIG. 48.
  • a stepped bore 50 is provided, in which the outlet port 22 is inserted. He is welded to the housing 34 with a weld 52.
  • an outlet valve 54 is pressed.
  • the stepped bore 50 may also communicate with the working space 44.
  • a stepped bore 56 is again introduced, in which the electromagnetic actuator 30 and (not visible), the inlet valve are used.
  • the side surface 40d opposite the side surface 40a, the side surface 40f opposite the side surface 40c, and the side surface 40b opposite the side surface 40e are free, so that when the stepped bores 46 are introduced, 50, and 56 and when installing the components 20, 22, and 30 required support forces can be well received.
  • further bores may simply be present, which serve to fasten further attachment components. These include, for example, hose holders or other additional components.
  • FIG. 4 An alternative embodiment of a high pressure piston pump 18 is shown in FIG. 4 shown.
  • carry such elements and areas which equivalent functions to elements and areas of related to the Figures 2 and 3 explained embodiment, have the same reference numerals. They are not explained again in detail.
  • the inlet nozzle 20 is not on the side surface 40a, but on the side surface 40b, ie immediately adjacent to the outlet 22, respectively. Further, in the side surface 40 f, a threaded bore 58 is introduced, in which a pressure sensor 60 is screwed. The threaded hole 58 communicates with the stepped bore 46, in the inlet nozzle 20 is attached. By the pressure sensor 60, therefore, the pressure in a low pressure region (without reference numeral) of the fuel system 12 can be detected.
  • the pressure sensor 60 is a commercial part, which can be easily attached to the housing 34 of the high-pressure piston pump 18 due to the presence of the straight side surface 40f and sealed, for example, via an O-ring 61. Due to the direct attachment of the pressure sensor 60 to the high-pressure piston pump 18, additional installations in the line area between the prefeed pump 16 and the high-pressure piston pump 18 are not required.
  • an electrical line which is connected to a socket 62 of the pressure sensor 60, be performed together with an already existing electrical line, which is connected to a socket 64 of the electromagnetic actuator 30.
  • FIG. 4 is very clear that when using a hexagonal profile 39 for the housing 34 on the one hand, the electrical components 30 and 60 and on the other hand connected to the fluid lines components 20 and 22 can be grouped in a simple manner opposite. This simplifies the corresponding wiring again.

Claims (6)

  1. Pompe à pistons pour carburant à haute pression (18), avec un corps de pompe (34) et avec au moins un composant (20, 22, 30; 60) installé latéralement sur le corps de pompe, dans laquelle le corps de pompe (34) présente une forme de section transversale polygonale (39) avec des faces latérales (40) au moins localement droites, et dans laquelle au moins un composant (20, 22, 30; 60) est disposé dans la région d'une face latérale droite (40), caractérisée en ce que le corps est fabriqué à partir d'un profilé rond, à partir duquel les faces latérales droites (40) ont été usinées, ou à partir d'un profilé polygonal classique (39).
  2. Pompe à pistons pour carburant à haute pression (18) selon la revendication 1, caractérisée en ce que les faces latérales (40) sont au moins sensiblement de même grandeur.
  3. Pompe à pistons pour carburant à haute pression (18) selon la revendication 2, caractérisée en ce que le corps (34) présente en section transversale la forme d'un polygone symétrique, en particulier d'un hexagone (39).
  4. Pompe à pistons pour carburant à haute pression (18) selon l'une quelconque des revendications précédentes, caractérisée en ce que le corps (34) est fabriqué en acier allié.
  5. Pompe à pistons pour carburant à haute pression (18) selon l'une quelconque des revendications précédentes, caractérisée en ce qu'au moins un composant installé sur une face latérale (40) est un détecteur de pression (60).
  6. Pompe à pistons pour carburant à haute pression (18) selon l'une quelconque des revendications précédentes, caractérisée en ce que des composants (20, 22), qui présentent un raccord de fluide, et des composants (30; 60), qui présentent un raccord électrique (62, 64), sont situés au moins sensiblement en face l'un de l'autre.
EP20040007021 2003-05-20 2004-03-24 pompe à pistons, en particulier pompe d'essence à haute pression Expired - Lifetime EP1479903B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP11153643.9A EP2312148B1 (fr) 2003-05-20 2004-03-24 pompe à pistons, en particulier pompe d'essence à haute pression
EP11153765.0A EP2312149B1 (fr) 2003-05-20 2004-03-24 pompe à pistons, en particulier pompe d'essence à haute pression

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10322602 2003-05-20
DE2003122602 DE10322602A1 (de) 2003-05-20 2003-05-20 Kolbenpumpe, insbesondere Hochdruck-Kraftstoffpumpe

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP11153643.9 Division-Into 2011-02-08
EP11153765.0 Division-Into 2011-02-09

Publications (2)

Publication Number Publication Date
EP1479903A1 EP1479903A1 (fr) 2004-11-24
EP1479903B1 true EP1479903B1 (fr) 2011-05-25

Family

ID=33039211

Family Applications (3)

Application Number Title Priority Date Filing Date
EP11153765.0A Expired - Lifetime EP2312149B1 (fr) 2003-05-20 2004-03-24 pompe à pistons, en particulier pompe d'essence à haute pression
EP11153643.9A Expired - Fee Related EP2312148B1 (fr) 2003-05-20 2004-03-24 pompe à pistons, en particulier pompe d'essence à haute pression
EP20040007021 Expired - Lifetime EP1479903B1 (fr) 2003-05-20 2004-03-24 pompe à pistons, en particulier pompe d'essence à haute pression

Family Applications Before (2)

Application Number Title Priority Date Filing Date
EP11153765.0A Expired - Lifetime EP2312149B1 (fr) 2003-05-20 2004-03-24 pompe à pistons, en particulier pompe d'essence à haute pression
EP11153643.9A Expired - Fee Related EP2312148B1 (fr) 2003-05-20 2004-03-24 pompe à pistons, en particulier pompe d'essence à haute pression

Country Status (2)

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EP (3) EP2312149B1 (fr)
DE (1) DE10322602A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3343015B1 (fr) * 2015-08-28 2021-11-17 Hitachi Astemo, Ltd. Pompe à carburant à haute pression et procédé pour sa production
JP6708238B2 (ja) 2017-09-29 2020-06-10 株式会社デンソー 高圧ポンプ
JP6747482B2 (ja) 2017-09-29 2020-08-26 株式会社デンソー 高圧ポンプ
JP6809520B2 (ja) 2017-09-29 2021-01-06 株式会社デンソー 高圧ポンプ

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2573344A (en) 1946-09-13 1951-10-30 Everett P Larsh Fuel injector
US3220351A (en) * 1963-05-28 1965-11-30 Technicon Chromatography Corp Positive displacement pump
US5863187A (en) * 1997-02-10 1999-01-26 Ivek Corporation Two position rotary reciprocating pump with liquid displacement flow adjustment
US6123059A (en) * 1997-09-05 2000-09-26 Denso Corporation Fuel supply apparatus
US6503066B1 (en) * 2000-06-20 2003-01-07 Curtiss-Wright Flow Control Corporation Hydrostatic pressure test pump
DE10046315C2 (de) * 2000-09-19 2002-11-14 Siemens Ag Hochdruckpumpe für ein Speichereinspritzsystem sowie Speichereinspritzsystem
US6419459B1 (en) * 2000-10-02 2002-07-16 Gardner Denver, Inc. Pump fluid cylinder mounting assembly

Also Published As

Publication number Publication date
EP2312149A1 (fr) 2011-04-20
EP2312148A1 (fr) 2011-04-20
DE10322602A1 (de) 2004-12-09
EP2312148B1 (fr) 2013-10-16
EP2312149B1 (fr) 2013-05-22
EP1479903A1 (fr) 2004-11-24

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