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WO2010012534A1 - Réservoir de carburant sous pression pour système d'injection de moteurs à combustion interne - Google Patents

Réservoir de carburant sous pression pour système d'injection de moteurs à combustion interne Download PDF

Info

Publication number
WO2010012534A1
WO2010012534A1 PCT/EP2009/056788 EP2009056788W WO2010012534A1 WO 2010012534 A1 WO2010012534 A1 WO 2010012534A1 EP 2009056788 W EP2009056788 W EP 2009056788W WO 2010012534 A1 WO2010012534 A1 WO 2010012534A1
Authority
WO
WIPO (PCT)
Prior art keywords
pressure
fuel
fuel pressure
receptacles
pressure accumulator
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.)
Ceased
Application number
PCT/EP2009/056788
Other languages
German (de)
English (en)
Inventor
David Passepont
Volker Staub
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 WO2010012534A1 publication Critical patent/WO2010012534A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
    • F02M55/025—Common rails
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
    • F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding common rails
    • 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
    • F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/46—Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02 - F02M69/44
    • F02M69/462—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down
    • F02M69/465—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down of fuel rails
    • 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
    • F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/46—Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02 - F02M69/44
    • F02M69/54—Arrangement of fuel pressure regulators

Definitions

  • the invention relates to a fuel pressure accumulator according to the preamble of claim 1.
  • Fuel pressure accumulators are known in which, in addition to the pump and injector-side connections, there are still receptacles for add-on components.
  • a maximum pressure valve is attached to the fuel pressure accumulator as an add-on component in addition to a rail pressure sensor.
  • the pressure valve is designed either as a normally open pressure control valve or - in a simplified design - as a pressure relief valve.
  • a normally open pressure control valve may well be designed so that it also performs a pressure limiting function.
  • Object of the present invention is to develop a fuel pressure accumulator so that while maintaining the existing system functionality, the use of a normally closed pressure control valve is possible, which usually can not always ensure the pressure limiting function.
  • the pressure limiting function must then be perceived by a separate pressure valve, which is arranged in the high pressure part of the injection system and limits the pressure in the high pressure part to the maximum allowable pressure.
  • receptacles By at least two receptacles are provided for pressure valves in the container wall, can be attached to the fuel pressure accumulator both a pressure control valve, as well as a pressure relief valve.
  • the receptacles for the pressure valves are formed as receiving openings in the container wall of the fuel pressure accumulator and are connected via an at least partially extending in the container wall drainage channel with a formed on the container wall low pressure connection is particularly advantageous. In this way, can be dispensed with separate low-pressure connections for discharging the overflow at the pressure valves.
  • a drain channel as a bore starting from a receiving opening or an opening of a low-pressure connection has the advantage that can be dispensed with a plug of the bore.
  • FIG. 1 shows the structure of a fuel pressure accumulator according to the invention with add-on components attached thereto according to a first embodiment
  • FIG. 2 shows a partial section through a fuel pressure accumulator according to the invention according to a second embodiment
  • 3 shows a partial section through a fuel pressure accumulator according to the invention according to a third embodiment
  • FIG. 4 shows a partial section through a fuel pressure accumulator according to the invention according to a fourth embodiment
  • FIG. 5 shows a partial section through a fuel pressure accumulator according to the invention according to a fifth embodiment.
  • Fig. 1 denotes a tubular fuel pressure accumulator having a container wall 2, which surrounds a fuel storage space 3.
  • the fuel pressure accumulator 1 is provided for an injection system for internal combustion engines and is commonly referred to as a rail.
  • the container wall 2 of the fuel pressure accumulator 1 forms a plurality of terminals 4 for fuel pressure lines to a high-pressure pump, not shown, and not shown injectors.
  • Two mounting components 8, 9 are designed as pressure valves, wherein a first pressure valve 8 is a pressure control valve and a second pressure valve 9 is a pressure relief valve.
  • the pressure control valve 8 has an electrical connection 16 for connection to a control device or a power supply, not shown.
  • the receptacles 5, 6 are formed in the example case as receiving openings, which enable a not further shown thread screwing the add-on components.
  • the two receiving openings 5, 6 for the pressure valves are connected via drain channels 11, 12 with low-pressure connections 13, 14, so that a controlled via the pressure valves amount of fuel can be led to a low pressure return.
  • the flow channels 11, 12 respectively open into the receiving openings 5, 6, that when attached to the fuel pressure accumulator 1 attachment component 8, 9, a seal between the high pressure part and the low pressure part (drain channel 11, 12) is ensured.
  • the two pressure valves 8, 9 arranged at opposite ends of the fuel pressure accumulator 1.
  • a rail pressure sensor 10 is provided, the receptacle 7 radially between the end arranged receiving openings 5, 6 is located.
  • the distribution of the attachment components 8, 9, 10 on the high-pressure accumulator 1 is fundamentally arbitrary.
  • FIG. 2 shows an alternative arrangement possibility for the pressure valves 8, 9.
  • the associated receiving openings 5, 6 are still spatially separated from each other, but arranged at least adjacent in the container wall 2. Both receiving openings are connected via the drainage channels 11, 12 with a common low-pressure connection 13 a.
  • the drainage channel 12 is designed as a bore in the container wall 2, which is perpendicular to the drainage channel 11, this cuts and is closed to the outside by a sealing plug 15. The bore 12 terminates in the receiving opening 6.
  • FIG. 3 shows a further exemplary embodiment for the use of a common low-pressure connection 13a for both receiving openings 5, 6.
  • the drain hole 12 is designed as a bore which connects the receiving opening 6 with an opening 13b in the container wall 2.
  • the bore 12 is designed obliquely, wherein it emanates from the opening 13b and opens into the receiving opening 6 and is thus sealed after mounting the low pressure port 13a to the outside.
  • the bore 12 can also lead, starting from the receiving opening 5 to the receiving opening 6, so that after assembly of the attachment components 8, 9, a seal is also ensured to the outside and a common low pressure port 13a is present.
  • the bore 12, as shown in Figure 5, be introduced from the receiving opening 6 to the outlet channel 11.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

L'invention concerne un réservoir de carburant sous pression pour système d'injection de moteurs à combustion interne, qui présente une paroi de récipient (2) sur laquelle sont formés des raccordements (4) de conduites de carburant et des cavités de réception (5, 6, 7) d'éléments de montage (8, 9, 10). Au moins deux des cavités de réception (5, 6, 7) pour éléments de montage (8, 9, 10) sont aménagées, en tant que cavités de réception de soupape (5, 6) destinées à recevoir des soupapes de pression (8, 9), séparées spatialement les unes des autres.
PCT/EP2009/056788 2008-07-31 2009-06-03 Réservoir de carburant sous pression pour système d'injection de moteurs à combustion interne Ceased WO2010012534A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008040901.4 2008-07-31
DE200810040901 DE102008040901A1 (de) 2008-07-31 2008-07-31 Kraftstoffdruckspeicher für ein Einspritzsystem für Brennkraftmaschinen

Publications (1)

Publication Number Publication Date
WO2010012534A1 true WO2010012534A1 (fr) 2010-02-04

Family

ID=41076692

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/056788 Ceased WO2010012534A1 (fr) 2008-07-31 2009-06-03 Réservoir de carburant sous pression pour système d'injection de moteurs à combustion interne

Country Status (2)

Country Link
DE (1) DE102008040901A1 (fr)
WO (1) WO2010012534A1 (fr)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010043256A1 (de) 2010-11-03 2012-05-03 Robert Bosch Gmbh Kraftstoffhochdruckspeicher für ein Common-Rail-Einspritzsystem
DE102011075058A1 (de) * 2011-05-02 2012-11-08 Robert Bosch Gmbh Brennstoffverteiler
DE102013214965A1 (de) * 2013-07-31 2015-02-05 Robert Bosch Gmbh Brennstoffverteiler und Brennstoffeinspritzsystem
DE102014212001A1 (de) 2014-06-23 2015-12-24 Robert Bosch Gmbh Druckregelventil mit integriertem Drucksensor
DE102014211967A1 (de) 2014-06-23 2015-12-24 Robert Bosch Gmbh Druckregelventil mit integriertem Drucksensor
DE102014215442A1 (de) 2014-08-05 2016-02-11 Robert Bosch Gmbh Druckregelventil mit integriertem Drucksensor
DE102014226637A1 (de) 2014-12-19 2016-06-23 Robert Bosch Gmbh Druckregelventil mit integriertem Drucksensor
DE102015202978A1 (de) 2015-02-19 2016-08-25 Robert Bosch Gmbh Druckregelventil
DE102015203515A1 (de) 2015-02-27 2016-09-01 Robert Bosch Gmbh Teildruckausgeglichenes Druckregelventil für einen Hochdruckspeicher
DE102015206538A1 (de) 2015-04-13 2016-10-13 Robert Bosch Gmbh Druckregelventil mit integriertem Drucksensor
DE102015214333A1 (de) 2015-07-29 2017-02-02 Robert Bosch Gmbh Kraftstoffeinspritzsystem
DE102016209423B4 (de) 2016-05-31 2025-07-03 Robert Bosch Gmbh Hochdruckspeicher und Verfahren zur Herstellung eines Hochdruckspeichers
DE102016209413A1 (de) 2016-05-31 2017-11-30 Robert Bosch Gmbh Kraftstoffdruckspeicher, Einspritzsystem mit einem Kraftstoffdruckspeicher und Verfahren zum Betreiben eines Einspritzsystems mit einem Kraftstoffdruckspeicher
DE102016210385A1 (de) 2016-06-13 2017-12-14 Robert Bosch Gmbh Drucksensor für einen Hochdruckspeicher und Hochdruckspeicher
DE102016220185A1 (de) 2016-10-17 2018-04-19 Robert Bosch Gmbh Drucksensor für einen Hochdruckspeicher und Hochdruckspeicher
CH715387A1 (de) * 2018-09-27 2020-03-31 Ganser Hydromag Common Rail für eine Brennstoffeinspritzvorrichtung.

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5088463A (en) * 1990-06-28 1992-02-18 Mcguane Industries Fuel supply system for internal combustion engines
JPH09144624A (ja) * 1995-11-20 1997-06-03 Toyoda Gosei Co Ltd 燃料圧力脈動減衰装置
US20050092301A1 (en) * 2003-11-04 2005-05-05 Denso Corporation Valve opening degree control system and common rail type fuel injection system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5088463A (en) * 1990-06-28 1992-02-18 Mcguane Industries Fuel supply system for internal combustion engines
JPH09144624A (ja) * 1995-11-20 1997-06-03 Toyoda Gosei Co Ltd 燃料圧力脈動減衰装置
US20050092301A1 (en) * 2003-11-04 2005-05-05 Denso Corporation Valve opening degree control system and common rail type fuel injection system

Also Published As

Publication number Publication date
DE102008040901A1 (de) 2010-02-04

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