EP2450553A3 - Fuel injection system of a combustion engine and method for controlling same - Google Patents

Fuel injection system of a combustion engine and method for controlling same Download PDF

Info

Publication number
EP2450553A3
EP2450553A3 EP11182137.7A EP11182137A EP2450553A3 EP 2450553 A3 EP2450553 A3 EP 2450553A3 EP 11182137 A EP11182137 A EP 11182137A EP 2450553 A3 EP2450553 A3 EP 2450553A3
Authority
EP
European Patent Office
Prior art keywords
pressure
combustion engine
injection system
fuel injection
low
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
EP11182137.7A
Other languages
German (de)
French (fr)
Other versions
EP2450553B1 (en
EP2450553A2 (en
Inventor
Helmar Gruhl
Paulo Jorge Ferreira Goncalves
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 EP2450553A2 publication Critical patent/EP2450553A2/en
Publication of EP2450553A3 publication Critical patent/EP2450553A3/en
Application granted granted Critical
Publication of EP2450553B1 publication Critical patent/EP2450553B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/30—Controlling fuel injection
    • F02D41/38—Controlling fuel injection of the high pressure type
    • F02D41/3809—Common rail control systems
    • F02D41/3836—Controlling the fuel pressure
    • F02D41/3845—Controlling the fuel pressure by controlling the flow into the common rail, e.g. the amount of fuel pumped
    • F02D41/3854—Controlling the fuel pressure by controlling the flow into the common rail, e.g. the amount of fuel pumped with elements in the low pressure part, e.g. low pressure pump
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/30—Controlling fuel injection
    • F02D41/38—Controlling fuel injection of the high pressure type
    • F02D41/3809—Common rail control systems
    • F02D41/3836—Controlling the fuel pressure
    • F02D41/3845—Controlling the fuel pressure by controlling the flow into the common rail, e.g. the amount of fuel pumped
    • 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
    • F02M59/20—Varying fuel delivery in quantity or timing
    • F02M59/36—Varying fuel delivery in quantity or timing by variably-timed valves controlling fuel passages to pumping elements or overflow passages
    • F02M59/366—Valves being actuated electrically
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/30—Controlling fuel injection
    • F02D41/3082—Control of electrical fuel pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/30—Controlling fuel injection
    • F02D41/38—Controlling fuel injection of the high pressure type
    • F02D41/3809—Common rail control systems
    • F02D41/3836—Controlling the fuel pressure
    • F02D41/3863—Controlling the fuel pressure by controlling the flow out of the common rail, e.g. using 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
    • 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
    • F02M63/025—Means for varying pressure in common rails by bleeding fuel pressure from the common rail

Abstract

Die Erfindung betrifft ein Verfahren zur Steuerung eines einen Niederdruck- (1) und einen Hochdruckbereich (2) aufweisenden Kraftstoffeinspritzsystems einer Brennkraftmaschine, wobei eine Hochdruckkraftstoffpumpe (3) eine Niederdruckmenge aus dem Niederdruckbereich (1) zugeführt wird, welche diese Niederdruckmenge auf Hochdruck verdichtet und in einen Druckspeicher (11) des Hochdruckbereichs (2) fördert, und wobei die Niederdruckmenge der Hochdruckkraftstoffpumpe (3) entsprechend eines in einem Betriebspunkt der Brennkraftmaschine zu erreichenden Einspritzdrucks zudosiert wird, wobei ferner die Niederdruckmenge durch eine Regelung einer Fördermenge einer Förderpumpe (5) und einer Drosselmenge einer Zumesseinheit (8; 19) eingestellt wird. Die Erfindung betrifft des Weiteren die Ausgestaltung eines derartigen Kraftstoffeinspritzsystems.

Figure imgaf001
The invention relates to a method for controlling a low-pressure (1) and a high-pressure area (2) comprising a fuel injection system of an internal combustion engine, wherein a high pressure fuel pump (3) is supplied from the low pressure region (1), which compresses this low pressure to high pressure and in a pressure accumulator (11) of the high-pressure region (2) promotes, and wherein the low-pressure amount of the high-pressure fuel pump (3) is metered according to an injection point to be reached at an operating point of the internal combustion engine, further wherein the low pressure amount by controlling a delivery rate of a feed pump (5) and a Throttling amount of a metering unit (8; 19) is set. The invention further relates to the configuration of such a fuel injection system.
Figure imgaf001
EP11182137.7A 2010-11-04 2011-09-21 Fuel injection system of a combustion engine and method for controlling same Not-in-force EP2450553B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102010043374A DE102010043374A1 (en) 2010-11-04 2010-11-04 Fuel injection system of an internal combustion engine, and method for controlling the selbigen

Publications (3)

Publication Number Publication Date
EP2450553A2 EP2450553A2 (en) 2012-05-09
EP2450553A3 true EP2450553A3 (en) 2014-07-30
EP2450553B1 EP2450553B1 (en) 2019-09-11

Family

ID=44674532

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11182137.7A Not-in-force EP2450553B1 (en) 2010-11-04 2011-09-21 Fuel injection system of a combustion engine and method for controlling same

Country Status (2)

Country Link
EP (1) EP2450553B1 (en)
DE (1) DE102010043374A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1298306A2 (en) * 2001-09-28 2003-04-02 Robert Bosch Gmbh Method of operating a combustion engine
EP1574704A2 (en) * 2004-03-11 2005-09-14 Denso Corporation Fuel injection system having electric low-pressure pump
WO2006032577A1 (en) * 2004-09-21 2006-03-30 Siemens Aktiengesellschaft Method and device for controlling an internal combustion engine
WO2011067008A1 (en) * 2009-12-02 2011-06-09 Robert Bosch Gmbh Fuel injection device with quantity difference control for an electric pre-supply pump

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19735561B4 (en) 1997-08-16 2007-12-20 Robert Bosch Gmbh Method and device for controlling an internal combustion engine
DE19752025B4 (en) * 1997-11-24 2006-11-09 Siemens Ag Method and device for regulating the fuel pressure in a fuel storage

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1298306A2 (en) * 2001-09-28 2003-04-02 Robert Bosch Gmbh Method of operating a combustion engine
EP1574704A2 (en) * 2004-03-11 2005-09-14 Denso Corporation Fuel injection system having electric low-pressure pump
WO2006032577A1 (en) * 2004-09-21 2006-03-30 Siemens Aktiengesellschaft Method and device for controlling an internal combustion engine
WO2011067008A1 (en) * 2009-12-02 2011-06-09 Robert Bosch Gmbh Fuel injection device with quantity difference control for an electric pre-supply pump

Also Published As

Publication number Publication date
EP2450553B1 (en) 2019-09-11
DE102010043374A1 (en) 2012-05-10
EP2450553A2 (en) 2012-05-09

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