EP1403509A3 - Pressure limiting device and fuel system with such a pressure limiting device - Google Patents

Pressure limiting device and fuel system with such a pressure limiting device Download PDF

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Publication number
EP1403509A3
EP1403509A3 EP03003826A EP03003826A EP1403509A3 EP 1403509 A3 EP1403509 A3 EP 1403509A3 EP 03003826 A EP03003826 A EP 03003826A EP 03003826 A EP03003826 A EP 03003826A EP 1403509 A3 EP1403509 A3 EP 1403509A3
Authority
EP
European Patent Office
Prior art keywords
pressure limiting
limiting device
fuel system
pressure
injection system
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.)
Granted
Application number
EP03003826A
Other languages
German (de)
French (fr)
Other versions
EP1403509A2 (en
EP1403509B1 (en
Inventor
Helmut Rembold
Wolfgang Bueser
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 EP1403509A2 publication Critical patent/EP1403509A2/en
Publication of EP1403509A3 publication Critical patent/EP1403509A3/en
Application granted granted Critical
Publication of EP1403509B1 publication Critical patent/EP1403509B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • F02M63/023—Means for varying pressure in common rails
    • F02M63/0235—Means for varying pressure in common rails by bleeding fuel pressure
    • F02M63/0245—Means for varying pressure in common rails by bleeding fuel pressure between the high pressure pump and the common rail
    • 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
    • F02M55/04—Means for damping vibrations or pressure fluctuations in injection pump inlets or outlets
    • 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
    • F02M63/0012—Valves
    • F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
    • F02M63/005—Pressure relief valves
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/31—Fuel-injection apparatus having hydraulic pressure fluctuations damping elements
    • F02M2200/315—Fuel-injection apparatus having hydraulic pressure fluctuations damping elements for damping fuel pressure fluctuations
    • 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
    • F02M2200/40—Fuel-injection apparatus with fuel accumulators, e.g. a fuel injector having an integrated fuel accumulator
    • 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
    • F02M63/0012—Valves
    • F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
    • F02M63/004—Sliding valves, e.g. spool valves, i.e. whereby the closing member has a sliding movement along a seat for opening and closing
    • 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
    • F02M63/0012—Valves
    • F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
    • F02M63/0045—Three-way valves

Landscapes

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

Abstract

Es werden verschiedene Druckbegrenzungseinrichtungen (56) vorgeschlagen, welche die Integration eines Druckbegrenzungsventils in eine Kraftstoffpumpe (30) einer Kraftstoffeinspritzanlage ermöglichen. Dabei werden über eine Ausgleichskammer (82) kurzzeitige Druckspitzen, die sich bei jedem Förderhub der Kraftstoffpumpe (30) ergeben, abgebaut und somit ein unerwünschtes Öffnen der Druckbegrenzungseinrichtung (56) im Normalbetrieb der Kraftstoffeinspritzanlage verhindert.

Figure 00000001
Various pressure limiting devices (56) are proposed, which enable the integration of a pressure relief valve into a fuel pump (30) of a fuel injection system. In this case, via a compensation chamber (82) short-term pressure peaks, resulting in each delivery stroke of the fuel pump (30) degraded and thus prevents unwanted opening of the pressure limiting device (56) during normal operation of the fuel injection system.
Figure 00000001
EP20030003826 2002-09-27 2003-02-20 Pressure limiting device and fuel system with such a pressure limiting device Expired - Lifetime EP1403509B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2002145084 DE10245084A1 (en) 2002-09-27 2002-09-27 Pressure limiting device and fuel system with such a pressure limiting device
DE10245084 2002-09-27

Publications (3)

Publication Number Publication Date
EP1403509A2 EP1403509A2 (en) 2004-03-31
EP1403509A3 true EP1403509A3 (en) 2005-01-05
EP1403509B1 EP1403509B1 (en) 2006-08-09

Family

ID=31969645

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20030003826 Expired - Lifetime EP1403509B1 (en) 2002-09-27 2003-02-20 Pressure limiting device and fuel system with such a pressure limiting device

Country Status (3)

Country Link
EP (1) EP1403509B1 (en)
JP (1) JP2004116526A (en)
DE (2) DE10245084A1 (en)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005062548A1 (en) * 2005-12-27 2007-07-05 Robert Bosch Gmbh Common rail fuel system has fuel pump to pump fuel into rail, injectors through which fuel flows out of rail and connected valve device controlled by pressure in rail to avoid high frequency vibrations of fuel stored in rail
US20080022974A1 (en) * 2006-07-28 2008-01-31 Caterpillar Inc. Multi-stage relief valve having different opening pressures
ITMI20072219A1 (en) 2007-11-23 2009-05-24 Bosch Gmbh Robert OVERPRESSURE VALVE AND HIGH PRESSURE PUMP INCLUDING THIS PRESSURE VALVE
DE102008014250A1 (en) * 2008-03-13 2009-09-17 Man Diesel Se Fuel supply system of an internal combustion engine
DE102008020329A1 (en) * 2008-04-23 2009-10-29 Continental Automotive Gmbh Device and method for fuel allocation and thus equipped internal combustion engine
ATE554283T1 (en) * 2009-07-08 2012-05-15 Delphi Tech Holding Sarl PUMP UNIT
US8240291B2 (en) 2009-10-23 2012-08-14 Caterpillar Inc. Pressure relief valve
IT1400581B1 (en) * 2010-06-18 2013-06-14 Bosch Gmbh Robert LUBRICATION AND OVERFLOW VALVE FOR A FUEL SUPPLY SYSTEM FROM A TANK TO AN INTERNAL COMBUSTION ENGINE AND SUCH A SYSTEM INCLUDING THAT VALVE.
DE102010064216A1 (en) * 2010-12-27 2012-06-28 Robert Bosch Gmbh Pump, in particular a fuel injection system
DE102011003396A1 (en) * 2011-01-31 2012-08-02 Continental Automotive Gmbh Pump unit for a high-pressure pump
DE102013212553A1 (en) * 2013-06-28 2014-12-31 Robert Bosch Gmbh Hydraulic assembly for a fuel system of an internal combustion engine
DE102015205114B4 (en) 2015-03-20 2022-08-04 Volkswagen Aktiengesellschaft Procedure for avoiding excessive system pressures in common rail systems
US10443595B2 (en) * 2015-04-20 2019-10-15 Hitachi, Ltd. Automotive fuel pump
CN108386357B (en) * 2018-04-18 2024-05-28 北京燕都碧城科技有限公司 Liquid impact preventing device of single screw compressor
CN111608833B (en) * 2020-05-07 2021-08-06 一汽解放汽车有限公司 Safety pressure limiting valve for balancing pressure of common rail system
KR102540496B1 (en) * 2021-08-30 2023-06-07 주식회사 현대케피코 Pulsating Volume Extensible Type High Pressure Pump

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5558068A (en) * 1994-05-31 1996-09-24 Zexel Corporation Solenoid valve unit for fuel injection apparatus
US5927323A (en) * 1997-04-23 1999-07-27 Zexel Corporation Pressure control valve
EP0950810A2 (en) * 1998-04-15 1999-10-20 Mitsubishi Denki Kabushiki Kaisha Diaphragm stopper construction for a high-pressure accumulator
WO2002044549A2 (en) * 2000-11-30 2002-06-06 Robert Bosch Gmbh Fuel injection pump for internal combustion engines, especially diesel engines
DE10118936A1 (en) * 2001-04-18 2002-11-07 Bosch Gmbh Robert Pressure limiting device and fuel system with such a pressure limiting device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5558068A (en) * 1994-05-31 1996-09-24 Zexel Corporation Solenoid valve unit for fuel injection apparatus
US5927323A (en) * 1997-04-23 1999-07-27 Zexel Corporation Pressure control valve
EP0950810A2 (en) * 1998-04-15 1999-10-20 Mitsubishi Denki Kabushiki Kaisha Diaphragm stopper construction for a high-pressure accumulator
WO2002044549A2 (en) * 2000-11-30 2002-06-06 Robert Bosch Gmbh Fuel injection pump for internal combustion engines, especially diesel engines
DE10118936A1 (en) * 2001-04-18 2002-11-07 Bosch Gmbh Robert Pressure limiting device and fuel system with such a pressure limiting device

Also Published As

Publication number Publication date
JP2004116526A (en) 2004-04-15
DE50304554D1 (en) 2006-09-21
DE10245084A1 (en) 2004-04-01
EP1403509A2 (en) 2004-03-31
EP1403509B1 (en) 2006-08-09

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