EP1282771A1 - Verfahren zum betreiben eines kraftstoffzumesssystems einer direkteinspritzenden brennkraftmaschine - Google Patents
Verfahren zum betreiben eines kraftstoffzumesssystems einer direkteinspritzenden brennkraftmaschineInfo
- Publication number
- EP1282771A1 EP1282771A1 EP01947132A EP01947132A EP1282771A1 EP 1282771 A1 EP1282771 A1 EP 1282771A1 EP 01947132 A EP01947132 A EP 01947132A EP 01947132 A EP01947132 A EP 01947132A EP 1282771 A1 EP1282771 A1 EP 1282771A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fuel
- pressure
- internal combustion
- metering system
- combustion engine
- 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
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
- F02M63/0275—Arrangement of common rails
- F02M63/0285—Arrangement of common rails having more than one common rail
- F02M63/0295—Arrangement of common rails having more than one common rail for V- or star- or boxer-engines
-
- 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
-
- 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
Definitions
- the present invention relates to a method for operating a fuel metering system of a direct-injection internal combustion engine, with a fuel reservoir, at least one pre-pump for conveying fuel from the fuel reservoir into a low-pressure region of the
- Fuel metering system a high-pressure pump arrangement with at least two high-pressure pumps for conveying fuel from the low-pressure region into at least one high-pressure accumulator, a control device for regulating an injection pressure prevailing in the high-pressure accumulator and with fuel injection valves for injecting fuel from the high-pressure accumulator into combustion chambers of the internal combustion engine.
- the invention also relates to a fuel metering system of a direct-injection internal combustion engine, with a fuel reservoir, at least one pre-pump for conveying fuel from the fuel reservoir into a low-pressure area of the fuel metering system, a high-pressure pump arrangement with at least two high-pressure pumps for conveying fuel from the low-pressure area into at least one High-pressure accumulator, a control device for regulating an injection pressure prevailing in the high-pressure accumulator and with fuel injection valves for injecting fuel from the high-pressure accumulator into combustion chambers of the internal combustion engine.
- the present invention relates to a direct-injection internal combustion engine with a fuel metering system, which has a fuel reservoir, at least one pre-pump for conveying fuel from the
- Fuel reservoir in a low pressure area of the fuel metering system a high pressure pump arrangement with at least two high pressure pumps for delivering fuel from the low pressure area in at least one
- the invention also relates to a control device for such a direct-injection internal combustion engine.
- Fuel metering systems are known from the prior art, for example in the form of internal combustion engines with gasoline direct injection (BDE).
- BDE gasoline direct injection
- the fuel metering system usually has a
- Electric fuel pump trained pre-pump that delivers fuel from a fuel tank in ' a low pressure area of the fuel metering system.
- a high-pressure pump arrangement of the fuel metering system delivers fuel from the low-pressure area at high pressure into a high-pressure accumulator.
- the high pressure accumulator is e.g. as the manifold of a common rail (CR) fuel metering system.
- Injection valves open from the high-pressure accumulator and can be used to inject fuel from the high-pressure accumulator into combustion chambers of the internal combustion engine.
- the injection valves are controlled by a control unit of the internal combustion engine.
- the control unit also has the task of regulating an injection pressure prevailing in the high-pressure accumulator via a pressure control circuit.
- An increase in the injection pressure can be achieved by suitably controlling the high-pressure pump arrangement, that is to say by increasing the fuel supply to the high-pressure accumulator.
- a reduction in the injection pressure can be achieved by suitably controlling a control valve branching off the high-pressure accumulator, that is to say by increasing the fuel flow from the high-pressure accumulator, or by reducing the delivery capacity of the HDP.
- the control valve is designed, for example, as a quantity control valve (in the case of 1-cylinder piston high-pressure pumps) or as a pressure control valve (in the case of 3-cylinder radial piston high-pressure pumps).
- the high-pressure pump arrangement In internal combustion engines with four or fewer cylinders or in internal combustion engines with a relatively small displacement, the high-pressure pump arrangement generally comprises only one high-pressure pump. This can be designed, for example, as a 1-cylinder piston pump or as a 3-cylinder radial piston pump. With one high-pressure pump, a reliable supply of the combustion chambers with the required amount of fuel can be ensured in internal combustion engines with four or fewer cylinders or in internal combustion engines with a relatively small displacement in all operating states of the internal combustion engine.
- Fuel metering system of the type described in the introduction with a pre-pump and a high-pressure pump are known.
- a high pressure pump for a fuel metering system is known.
- the high-pressure pump described can be designed as a radial piston pump with three pump pistons arranged in a star shape or as an axial piston pump with two pump pistons arranged parallel to one another.
- the invention proposes, starting from the method of the type mentioned at the outset, that the fuel metering system has a fuel circuit for metering fuel into all combustion chambers of the internal combustion engine, all high-pressure pumps being arranged in the fuel circuit, and that all high-pressure pumps via a common pressure control circuit can be controlled independently.
- the fuel metering system is therefore not subdivided into several fuel circuits, rather only one fuel circuit is provided for metering fuel into all combustion chambers of the internal combustion engine. All high-pressure pumps of the high-pressure pump arrangement are arranged in this fuel circuit.
- the fuel metering system according to the invention preferably has two high-pressure pumps.
- the high-pressure pumps used can be designed as standard pumps, for example as 1-cylinder piston pumps or as 3-cylinder radial piston pumps, as are known per se from the prior art.
- the control unit of the fuel metering system controls all high pressure pumps independently of one another via a common pressure control circuit. Only a high-pressure accumulator is arranged in the fuel circuit, the injection pressure of which can be regulated by only one pressure control circuit.
- the method according to the invention can be implemented in a particularly simple and inexpensive manner.
- the combustion chambers can be reliably supplied with fuel, in particular in internal combustion engines with a relatively large displacement or in internal combustion engines with four or
- the invention proposes that the control device controls the high-pressure pumps in parallel with one another. Alternatively, it is proposed that the control device control one or more first high-pressure pumps in the opposite direction to one or more second high-pressure pumps.
- the control unit advantageously controls the high-pressure pumps with the same activation time.
- the internal combustion engine have at least six cylinders.
- the fuel metering system has two high-pressure storage areas which are connected to one another via a pressure compensation line.
- the pressure equalization line combines the two high-pressure storage areas into a common high-pressure store.
- the fuel metering system has a fuel circuit for metering fuel into all combustion chambers of the internal combustion engine, all high-pressure pumps being arranged in the fuel circuit, and that Control unit controls all high-pressure pumps independently of one another via a common pressure control circuit.
- Figure 1 is a schematic block diagram of a
- Figure 2 is a schematic block diagram of a first embodiment of a fuel metering system according to the invention.
- Figure 3 is a diagram illustrating a
- Figure 4 is a schematic block diagram of a second embodiment of a fuel metering system according to the invention in detail
- FIG. 5 shows a diagram to illustrate a second exemplary embodiment of a method according to the invention for operating the fuel metering system from FIG. 4;
- FIG. 6 shows a diagram to illustrate a third exemplary embodiment of a method according to the invention for operating the fuel metering system from FIG. 4.
- FIG. 1 shows a direct-injection internal combustion engine 1 of a motor vehicle, in which a piston 2 can be moved back and forth in a cylinder 3.
- the cylinder 3 is provided with a combustion chamber 4, which includes the piston 2, an inlet valve 5 and an outlet valve 6 in o in o in o in
- the high-pressure accumulator 16 is designed as a storage strip of a common rail (CR) fuel metering system.
- a pressure sensor is arranged on the high-pressure accumulator 16, which detects the injection pressure prevailing in the high-pressure accumulator 16 and generates a corresponding output signal p_r.
- Several - in the present case four - injection valves 9 open out of the high-pressure accumulator 16, via which fuel is injected into the combustion chambers 4 of the cylinders 3 of the internal combustion engine 1. To inject fuel, the injection valves 9 are driven with a corresponding control signal ES.
- the spark plug 10 is controlled by a control signal ZW.
- a low pressure regulator 20 is arranged in the low pressure area ND, via which fuel from the low pressure area ND back into the
- Fuel reservoir 12 can flow if the pressure in the low-pressure region ND exceeds a predeterminable pressure value.
- a filter 21 is arranged between the preliminary pump 13 and the high-pressure pumps 14, 15.
- a control unit 22 is acted upon by input signals 23, which represent operating variables of the internal combustion engine 1 measured by means of sensors.
- input signals 23 represent operating variables of the internal combustion engine 1 measured by means of sensors.
- the control unit 22 with an air mass sensor, a lambda sensor, a speed sensor or a pressure sensor 24 and the like arranged in the high pressure area HD, preferably in the high pressure accumulator 16. connected.
- Control unit 22 generates output signals 25 with which over 10 tO t F> in o in o in o in
- Both high-pressure pumps 14, 15 are arranged in this one fuel circuit. Both high-pressure pumps 14, 15 are controlled independently of one another by the control unit 22 via a common pressure control circuit. For a resource-saving operation of the fuel metering system 11, both high-pressure pumps 14, 15 are activated with the same activation time T. The activation time T is therefore calculated only once for the two high-pressure pumps 14, 15 in the control unit 22.
- FIG. 1 shows the fuel metering system 11 according to the invention for an internal combustion engine 1 with four cylinders 3.
- the fuel metering system 11 according to the invention also ensures a reliable fuel supply to the combustion chambers 4
- FIG. 2 shows a fuel metering system 11 according to the invention using the example of an 8-cylinder internal combustion engine 1.
- the high-pressure accumulator 16 comprises a left bank 16 'and a right bank 16' '.
- the two banks 16 ', 16' ' are connected to one another via a pressure compensation line 26, so that the same injection pressure prevails in both banks 16', 16 '' and the banks 16 ', 16' 'can be regarded as a common high-pressure accumulator 16.
- Four injection valves 9 branch off from each bank 16 ′, 16 ′′, via which fuel can be injected into the combustion chambers 4 of the internal combustion engine 1. Any bank
- 16 ', 16' ' is from its own high pressure pump 14; 15 supplied with fuel from the low pressure range ND.
- Each high pressure pump 14; 15 is its own power amplifier 27; 28 assigned.
- the control unit 22 determines the activation time T only once for both high-pressure pumps 14, 15.
- the control signal T is distributed to the output stages 27, 28 of the two high-pressure pumps 14, 15 via a switch 29.
- the switch 29 is switched every 180 ° according to a synchro grid for the 8-cylinder internal combustion engine 1 the crankshaft KW switched.
- the synchro grid is to be derived accordingly based on the adjustable camshaft.
- FIG. 3 shows a control of the high-pressure pumps 14, 15 of the fuel metering system 1 from FIG. 2 according to a preferred embodiment.
- the stroke h_l of the high pressure pump 14 is shown in the upper half of FIG. 3 and the stroke h_2 of the high pressure pump 15 is shown in the lower part.
- the two high-pressure pumps 14, 15 are actuated in opposite directions to one another.
- FIG. 3 shows when the pump pistons of the high-pressure pumps 14, 15 carry out a suction stroke or when they deliver fuel into the high-pressure accumulator 16 in one delivery stroke.
- FIG. 4 shows a fuel metering system according to the invention 11 for an internal combustion engine with six cylinders 3 shown in the detail.
- six injection valves 9 open from the high-pressure accumulator 16, via which fuel can be injected into the combustion chambers 4 of the individual cylinders 3.
- Fuel metering system 11 from FIG. 1 is also conveyed here by two high-pressure pumps 14, 15 of fuel from the low-pressure region ND of the fuel metering system 11 into the high-pressure accumulator 16.
- the fuel metering system 11 shown in FIG. 4 also has only one fuel circuit for metering fuel into all combustion chambers 4 of the internal combustion engine 1.
- Both high-pressure pumps 14, 15 are arranged in this one fuel circuit.
- Both high-pressure pumps 14, 15 are controlled independently of one another via a common pressure control circuit (cf. FIG. 2).
- FIGS. 5 and 6 show two different possibilities for controlling the high-pressure pumps 14, 15 of the fuel metering system 11 from FIG. 4.
- the high-pressure pumps 14, 15 are activated in parallel with one another.
- the high-pressure pumps 14, 15 are actuated in opposite directions to one another, similar to the exemplary embodiment from FIG.
- the suction stroke and conveying stroke are shown in FIGS. 5 and 6.
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10023033 | 2000-05-11 | ||
DE10023033A DE10023033A1 (de) | 2000-05-11 | 2000-05-11 | Verfahren zum Betreiben eines Kraftstoffzumesssystems einer direkteinspritzenden Brennkraftmaschine |
PCT/DE2001/001720 WO2001086139A1 (de) | 2000-05-11 | 2001-05-08 | Verfahren zum betreiben eines kraftstoffzumesssystems einer direkteinspritzenden brennkraftmaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1282771A1 true EP1282771A1 (de) | 2003-02-12 |
EP1282771B1 EP1282771B1 (de) | 2007-04-04 |
Family
ID=7641621
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01947132A Expired - Lifetime EP1282771B1 (de) | 2000-05-11 | 2001-05-08 | Verfahren zum betreiben eines kraftstoffzumesssystems einer direkteinspritzenden brennkraftmaschine |
Country Status (5)
Country | Link |
---|---|
US (1) | US6823844B2 (de) |
EP (1) | EP1282771B1 (de) |
JP (1) | JP4709466B2 (de) |
DE (2) | DE10023033A1 (de) |
WO (1) | WO2001086139A1 (de) |
Families Citing this family (35)
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DE10003906A1 (de) * | 2000-01-29 | 2001-08-09 | Bosch Gmbh Robert | Verfahren und Vorrichtung zum Kalibrieren eines Drucksensors |
DE10036773B4 (de) | 2000-07-28 | 2004-01-29 | Robert Bosch Gmbh | Verfahren zum Betreiben eines Kraftstoffzumesssystems einer direkt einspritzenden Brennkraftmaschine |
US6932583B2 (en) * | 2001-04-16 | 2005-08-23 | Siemens Diesel Systems Technology | Multiple stage pump with multiple external control valves |
JP2003227428A (ja) * | 2001-11-28 | 2003-08-15 | Honda Motor Co Ltd | エンジンの燃料噴射装置 |
US10308265B2 (en) | 2006-03-20 | 2019-06-04 | Ge Global Sourcing Llc | Vehicle control system and method |
US10569792B2 (en) | 2006-03-20 | 2020-02-25 | General Electric Company | Vehicle control system and method |
US9733625B2 (en) | 2006-03-20 | 2017-08-15 | General Electric Company | Trip optimization system and method for a train |
US9950722B2 (en) | 2003-01-06 | 2018-04-24 | General Electric Company | System and method for vehicle control |
JP4225240B2 (ja) * | 2004-04-28 | 2009-02-18 | トヨタ自動車株式会社 | 内燃機関の燃料供給装置 |
ATE507384T1 (de) * | 2004-06-30 | 2011-05-15 | Fiat Ricerche | Kraftstoffeinspritzsystem für brennkraftmaschine mit common rail |
ATE397723T1 (de) * | 2004-06-30 | 2008-06-15 | Fiat Ricerche | Einspritzsystem für verbrennungskraftmaschine |
KR100795406B1 (ko) * | 2004-07-12 | 2008-01-17 | 얀마 가부시키가이샤 | 축압식 연료분사장치 및 그 축압식 연료분사장치를 구비한내연기관 |
JP4438553B2 (ja) * | 2004-07-30 | 2010-03-24 | トヨタ自動車株式会社 | 内燃機関の高圧燃料系統の制御装置 |
US7234449B2 (en) * | 2005-07-14 | 2007-06-26 | General Electric Company | Common fuel rail fuel system for locomotive engine |
US9828010B2 (en) | 2006-03-20 | 2017-11-28 | General Electric Company | System, method and computer software code for determining a mission plan for a powered system using signal aspect information |
US9156477B2 (en) | 2006-03-20 | 2015-10-13 | General Electric Company | Control system and method for remotely isolating powered units in a vehicle system |
JP4415275B2 (ja) * | 2006-03-23 | 2010-02-17 | 株式会社デンソー | 燃料供給装置 |
US7426917B1 (en) | 2007-04-04 | 2008-09-23 | General Electric Company | System and method for controlling locomotive smoke emissions and noise during a transient operation |
FR2914959B1 (fr) * | 2007-04-13 | 2013-03-08 | Siemens Automotive Hydraulics Sa | Perfectionnement aux dispositifs d'alimentation de carburant sous haute pression par pompe transfert |
US7630823B2 (en) | 2007-09-20 | 2009-12-08 | General Electric Company | System and method for controlling the fuel injection event in an internal combustion engine |
EP2063093A1 (de) * | 2007-11-26 | 2009-05-27 | Delphi Technologies, Inc. | Kraftstoffeinspritzsystem |
US7690353B2 (en) * | 2007-11-30 | 2010-04-06 | Caterpillar Inc. | Synchronizing common rail pumping events with engine operation |
DE102007060634A1 (de) | 2007-12-17 | 2009-06-18 | Robert Bosch Gmbh | Verfahren zum Betreiben einer Brennkraftmaschine |
EP2085603A1 (de) * | 2008-01-31 | 2009-08-05 | Caterpillar Motoren GmbH & Co. KG | System und Verfahren zur Verhinderung der Überhitzung einer CR-Pumpe |
US9834237B2 (en) | 2012-11-21 | 2017-12-05 | General Electric Company | Route examining system and method |
DE102009050469B4 (de) * | 2009-10-23 | 2015-11-05 | Mtu Friedrichshafen Gmbh | Verfahren zur Steuerung und Regelung einer Brennkraftmaschine |
DE102011112947B3 (de) * | 2011-09-13 | 2012-12-20 | L'orange Gmbh | Hochdruckpumpensystem |
US8789513B2 (en) | 2011-09-26 | 2014-07-29 | Hitachi, Ltd | Fuel delivery system |
DE102012203097B3 (de) * | 2012-02-29 | 2013-04-11 | Continental Automotive Gmbh | Verfahren und Vorrichtung zum Bestimmen eines Fehlers einer Druckmessung in einem Druckbehälter |
US9669851B2 (en) | 2012-11-21 | 2017-06-06 | General Electric Company | Route examination system and method |
WO2015056045A1 (en) * | 2013-10-14 | 2015-04-23 | Renault Trucks | Fuel supply system for an internal combustion engine |
EP3071817B1 (de) * | 2013-11-20 | 2020-03-11 | Woodward, Inc. | Parallelendosierendes druckregulierungssystem mit integrierter durchflussmesserpositionierung |
DE102016213595A1 (de) * | 2016-07-25 | 2018-01-25 | Robert Bosch Gmbh | Kraftstofffördereinrichtung für eine Brennkraftmaschine, sowie ein Verfahren zur Förderung von Kraftstoff in einer Kraftstofffördereinrichtung |
DE102017208160A1 (de) * | 2017-05-15 | 2018-11-15 | Man Diesel & Turbo Se | Dual-Fuel-Motor und Verfahren zum Betreiben desselben |
DE102018216176A1 (de) * | 2018-09-21 | 2020-03-26 | Robert Bosch Gmbh | Kraftstofffördereinrichtung für eine Brennkraftmaschine |
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US5230613A (en) * | 1990-07-16 | 1993-07-27 | Diesel Technology Company | Common rail fuel injection system |
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DE19823639A1 (de) * | 1998-05-27 | 1999-12-02 | Bosch Gmbh Robert | Kraftstoffversorgungsanlage einer Brennkraftmaschine |
JP2000310171A (ja) * | 1999-04-27 | 2000-11-07 | Mitsubishi Electric Corp | 燃料供給装置 |
-
2000
- 2000-05-11 DE DE10023033A patent/DE10023033A1/de not_active Ceased
-
2001
- 2001-05-08 DE DE50112290T patent/DE50112290D1/de not_active Expired - Lifetime
- 2001-05-08 EP EP01947132A patent/EP1282771B1/de not_active Expired - Lifetime
- 2001-05-08 US US10/030,634 patent/US6823844B2/en not_active Expired - Lifetime
- 2001-05-08 JP JP2001582712A patent/JP4709466B2/ja not_active Expired - Lifetime
- 2001-05-08 WO PCT/DE2001/001720 patent/WO2001086139A1/de active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO0186139A1 * |
Also Published As
Publication number | Publication date |
---|---|
JP2003532833A (ja) | 2003-11-05 |
DE50112290D1 (de) | 2007-05-16 |
WO2001086139A1 (de) | 2001-11-15 |
JP4709466B2 (ja) | 2011-06-22 |
DE10023033A1 (de) | 2001-11-22 |
EP1282771B1 (de) | 2007-04-04 |
US20020162536A1 (en) | 2002-11-07 |
US6823844B2 (en) | 2004-11-30 |
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