WO2004018867A1 - Kraftstoffeinspritzeinrichtung für eine brennkraftmaschine - Google Patents
Kraftstoffeinspritzeinrichtung für eine brennkraftmaschine Download PDFInfo
- Publication number
- WO2004018867A1 WO2004018867A1 PCT/DE2003/000880 DE0300880W WO2004018867A1 WO 2004018867 A1 WO2004018867 A1 WO 2004018867A1 DE 0300880 W DE0300880 W DE 0300880W WO 2004018867 A1 WO2004018867 A1 WO 2004018867A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- fuel
- pump
- pressure
- combustion engine
- internal combustion
- 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
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
-
- 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
- F02M59/34—Varying fuel delivery in quantity or timing by throttling of passages to pumping elements or of overflow passages, e.g. throttling by means of a pressure-controlled sliding valve having liquid stop or abutment
-
- 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
-
- 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
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/0047—Layout or arrangement of systems for feeding fuel
Definitions
- the invention relates to a fuel injection device for an internal combustion engine according to the preamble of claim 1.
- Such a fuel injection device is known from DE 195 15 191 AI.
- This Kraf material injection device has a plurality of high-pressure pumps, each having a pump piston driven by a camshaft of the internal combustion engine in one stroke.
- a feed pump is also provided, through which fuel is delivered from a fuel tank to the high-pressure pumps.
- the high pressure pumps turn fuel into one
- a solenoid valve is arranged on each high-pressure pump to control the amount of fuel delivered to the store by the high-pressure pumps, by means of which a connection of the high-pressure pumps to a relief region is controlled. If the respective high-pressure pump is separated from the relief area by the solenoid valve, fuel is conveyed into the accumulator by this and if the respective high-pressure pump is connected to the relief area through the solenoid valve, no fuel is conveyed into the accumulator by this.
- a solenoid valve is present, the fuel injection device has a complex structure.
- the fuel injection device according to the invention with the features according to claim 1 has the advantage that it has a simple structure, since only one fuel metering device is required by which the amount of fuel delivered by the at least one high-pressure pump is set in the accumulator.
- Training according to claim 4 ensures that the pressure between the feed pump and the
- Fuel metering device is limited if no or only a small inflow of fuel is set by the fuel metering device.
- the configuration according to claim 5 ensures that no fuel is conveyed by the at least one high-pressure pump, which is necessary under certain operating conditions of the internal combustion engine, even if the inflow of fuel cannot be completely prevented by the fuel metering device.
- the embodiment according to claim 7 enables even fuel delivery into the accumulator even with a small number of high-pressure pumps.
- Fuel injection device for an internal combustion engine 2 shows a detail of the fuel injection device in a section along line II-II in FIG. 1.
- Fuel injection device for an internal combustion engine for example, a motor vehicle shown.
- the .0 internal combustion engine is preferably a self-igniting internal combustion engine and has one or more cylinders.
- the motor vehicle has a fuel reservoir 10 in which fuel is stored for the operation of the internal combustion engine.
- L5 fuel injection device has a feed pump 12, through which fuel from the fuel reservoir 10 is fed via a connection 13 to the suction side of at least one, preferably several, for example two, high-pressure pumps 14.
- ⁇ 0 deliver fuel to a memory 16, which can be tubular or in any other form, for example.
- Lines 18 lead from the store 16 to injectors 20 arranged on the cylinders of the internal combustion engine. There is an electrical one at each of the injectors 20
- control valve 22 arranged through which an opening of the injectors 20 is controlled so as to
- control valves 22 are controlled by an electronic one
- control device 23 is controlled by which the time and the duration of the fuel injection by the injectors 20 is determined as a function of operating parameters of the internal combustion engine, such as speed, load, temperature and others.
- the high-pressure pumps 14 are mechanically driven by a camshaft 30 of the internal combustion engine and thus proportional to the speed of the internal combustion engine.
- the high-pressure pumps 14 each have a pump housing 32, in which a pump piston 36 is tightly guided in a cylinder bore 34 and delimits a pump chamber 38 in the respective cylinder bore 34.
- an outlet valve 40 is arranged in the form of a check valve opening towards the accumulator 16, through which the separation between the pump work rooms 38 and the accumulator 16 takes place during the suction stroke of the pump pistons 36.
- an inlet valve 42 in the form of one each
- Pump work rooms 38 arranged check valve opening through which the separation between the pump work rooms 38 and the feed pump 12 takes place during the delivery stroke of the pump piston 36.
- the pump pistons 36 of the high-pressure pumps 14 are driven directly by the camshaft 30 of the internal combustion engine, which also actuates the gas exchange valves of the internal combustion engine.
- the camshaft 30 has additional cams 44 corresponding to the number of high-pressure pumps 14, by means of which the pump pistons 36 are driven in one stroke.
- the cams 44 are preferably designed as multiple cams, for example, as shown in FIG. 2, as triple cams, so that each pump piston 36 performs three strokes when the camshaft 30 rotates.
- the pump pistons 36 are supported by a tappet 43, for example a roller tappet, on the cam 44, the contact between the tappet 43 and the cam 44 being ensured by a spring 45.
- a tappet 43 for example a roller tappet
- Pump workrooms 38 with the inlet valves 42 open are connected to the outlet of the feed pump 12 and are filled with fuel, the pump workrooms 38 being separated from the accumulator 16 by the closed outlet valves 40.
- the pump work spaces 38 are connected to the accumulator 16 when the outlet valves 40 are open and are separated from the pressure side of the delivery pump 12 by the closed inlet valves 42.
- the fuel injection device also has a fuel metering device 46, which is arranged between the pressure side of the feed pump 12 and the suction side of the high-pressure pumps 14.
- Fuel metering device 46 is formed, for example, by an electrically operated proportional valve which has an actuator 47, for example an electromagnet or a piezo actuator, and a valve member 48 which can be moved thereby and by means of which a variable flow cross section is set.
- the actuator 47 is controlled by the control device 23 such that a specific flow cross section is set in the connection between the feed pump 12 and the high-pressure pumps 14 by the valve member 48 of the fuel metering device 46.
- the flow cross section can be continuously through the valve member 48 between a maximum flow cross section and a minimum
- Flow cross-section can be adjusted.
- the flow cross section can be at least approximately completely closed by the valve member 48.
- the Control device 23 is connected to a pressure sensor 49, by means of which the pressure prevailing in the accumulator 16 is detected at least indirectly, and from which an electrical signal for the pressure is supplied to the control device 23.
- the control device 23 are also signals for
- Preset pressure in the memory 16 wherein a signal for the actual value of the pressure is supplied to the control device 23 by the pressure sensor 49.
- the fuel metering device 46 is controlled by the control device 23 such that this deviation is eliminated. If the actual value for the pressure in the memory 16 is less than the target value; the fuel metering device 46 is controlled by the control device 23 such that it has a larger flow cross section between the feed pump
- the fuel metering device 46 is controlled by the control device 23 such that it sets a smaller flow cross section between the feed pump 12 and the high pressure pumps 14, so that the high pressure pumps 14 have a smaller one Amount of fuel is fed into the memory 16.
- a bypass connection 50 branches off from the connection 13 between the feed pump 12 and the high-pressure pumps 14 upstream of the fuel metering device 46, which leads to a relief region than that to the fuel storage container 10, for example leading return 54 or the suction side of the feed pump 12 can serve.
- an overflow valve 52 which opens towards the relief area and which is a pressure valve which opens when a predetermined pressure is exceeded and releases the bypass connection 50 to the relief area. If the high-pressure pumps 14 are not intended to provide full delivery and the fuel metering device 46 does not release the maximum flow cross-section, the pressure between the feed pump 12 and the fuel metering device 46 increases and if the opening pressure of the overflow valve 52 is exceeded, fuel flows to the relief area. so that the pressure between the feed pump 12 and the Kraf substance metering device 46 is limited.
- a further bypass connection 56 branches off downstream of the fuel metering device 46 between the latter and the high-pressure pumps 14 to a relief area, which in turn can serve as the return 54 or the suction side of the feed pump 12 ,
- a throttle point 58 is provided in the further bypass connection 56.
- no fuel may be conveyed into the accumulator 16 by the high-pressure pumps 14. If the flow cross-section between the feed pump 12 and the high-pressure pumps 14 cannot be completely closed reliably by the fuel metering device 46, fuel still passes through the fuel metering device 46. This fuel is discharged via the further bypass connection 58 into the relief area, so that it is not sucked in by the high-pressure pumps 14 and conveyed into the accumulator 16. Through throttle 58 the amount of fuel flowing to the relief area is limited.
- the high-pressure pumps 14 are operatively connected in parallel to one another and these independently deliver fuel to the memory 16.
- the high-pressure pumps 14 are inserted, for example, into an opening 60 of a housing 61, for example a crankcase or a cylinder head of the internal combustion engine.
- the fuel metering device 46, the bypass connection 50 with the overflow valve 52 and the bypass connection 56 with the throttle point 58 can likewise be arranged on the housing of the internal combustion engine, in particular its crankcase 61 or cylinder head.
- the feed pump 12 can have its own drive, for example an electromotive drive, or can be driven by the internal combustion engine, for example likewise by the camshaft 30.
- a fuel filter 62 can be arranged in the connection of the feed pump 12 to the fuel reservoir 10, which fuel filter 62 is designed as a prefilter can.
- a fuel filter 63 can be arranged in the connection 13 of the feed pump 12 to the high-pressure pumps 14, which can be designed as a fine filter. It may be provided 64, can be adjusted by the pressure in the reservoir 16 also a pressure regulating valve by a 'compound is controlled to a relief region by this can be ramped down over the fuel from the storage sixteenth
- a pressure limiting valve can also be provided, by means of which the pressure in the accumulator 16 is limited.
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
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP03720202.5A EP1530681B2 (de) | 2002-08-16 | 2003-03-18 | Kraftstoffeinspritzeinrichtung für eine brennkraftmaschine |
| DE50307660T DE50307660D1 (de) | 2002-08-16 | 2003-03-18 | Kraftstoffeinspritzeinrichtung für eine brennkraftmaschine |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10237586.0 | 2002-08-16 | ||
| DE2002137586 DE10237586A1 (de) | 2002-08-16 | 2002-08-16 | Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2004018867A1 true WO2004018867A1 (de) | 2004-03-04 |
Family
ID=30775345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DE2003/000880 Ceased WO2004018867A1 (de) | 2002-08-16 | 2003-03-18 | Kraftstoffeinspritzeinrichtung für eine brennkraftmaschine |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1530681B2 (de) |
| CN (1) | CN100532804C (de) |
| DE (2) | DE10237586A1 (de) |
| WO (1) | WO2004018867A1 (de) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005038237A1 (de) * | 2003-09-19 | 2005-04-28 | Robert Bosch Gmbh | Kraftstoffeinspritzeinrichtung für eine brennkraftmaschine |
| ES2313845A1 (es) * | 2004-03-22 | 2009-03-01 | Emiliano Lopez-Cano Toribio | Metodo para la aplicacion de motores diesel a motocicletas. |
| CN103620199A (zh) * | 2011-06-23 | 2014-03-05 | 瓦锡兰芬兰有限公司 | 燃料喷射系统 |
| CN110939531A (zh) * | 2018-09-21 | 2020-03-31 | 罗伯特·博世有限公司 | 用于内燃机的燃料输送装置 |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5195451B2 (ja) * | 2008-04-15 | 2013-05-08 | 株式会社デンソー | 燃料噴射装置、それに用いられる蓄圧式燃料噴射装置システム |
| SE534873C2 (sv) * | 2010-06-22 | 2012-01-31 | Scania Cv Ab | Bränslesystem för insprutning av en bränsleblandning i en förbränningsmotor |
| DE102011007686A1 (de) | 2011-04-19 | 2012-10-25 | Robert Bosch Gmbh | Kraftstofffördereinrichtung für eine Kraftstoffeinspritzeinrichtung einer Brennkraftmaschine |
| DE102011089972A1 (de) * | 2011-12-27 | 2013-06-27 | Robert Bosch Gmbh | Kraftstoffüberströmventil für eine Kraftstoffeinspritzeinrichtung und Kraftstoffeinspritzeinrichtung mit Kraftstoffüberströmventil |
| US9394857B2 (en) * | 2012-01-03 | 2016-07-19 | Volvo Lastvagnar Ab | Fuel system and corresponding method |
| JP5672287B2 (ja) * | 2012-10-11 | 2015-02-18 | 株式会社デンソー | 燃料噴射装置 |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5404855A (en) * | 1993-05-06 | 1995-04-11 | Cummins Engine Company, Inc. | Variable displacement high pressure pump for fuel injection systems |
| US5701872A (en) * | 1994-11-09 | 1997-12-30 | Sanshin Kogyo Kabushiki Kaisha | Vertical engine |
| DE19630938A1 (de) * | 1996-07-31 | 1998-02-05 | Siemens Ag | Kraftstoffzuleitung mit einem Volumenstromregelventil und Volumenstromregelventil |
| WO2000011342A1 (de) * | 1998-08-25 | 2000-03-02 | Siemens Aktiengesellschaft | Verfahren zum schnellen aufbau des kraftstoffdruckes in einem kraftstoffspeicher |
| DE19846157A1 (de) * | 1998-10-07 | 2000-04-13 | Bosch Gmbh Robert | Pumpenanordnung zur Kraftstoffhochdruckerzeugung |
| DE10118755A1 (de) * | 2000-04-18 | 2001-12-06 | Toyota Motor Co Ltd | Hochdruckpumpe |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5230613A (en) † | 1990-07-16 | 1993-07-27 | Diesel Technology Company | Common rail fuel injection system |
| DE19508445B4 (de) † | 1995-03-09 | 2004-07-08 | Deutz Ag | Kraftstoffeinspritzvorrichtung für eine selbstzündende Brennkraftmaschine |
| DE10147534A1 (de) † | 2001-09-26 | 2003-04-30 | Deutz Ag | Kraftstoff-Einspritzsystem |
-
2002
- 2002-08-16 DE DE2002137586 patent/DE10237586A1/de not_active Withdrawn
-
2003
- 2003-03-18 EP EP03720202.5A patent/EP1530681B2/de not_active Expired - Lifetime
- 2003-03-18 DE DE50307660T patent/DE50307660D1/de not_active Expired - Lifetime
- 2003-03-18 CN CNB038193752A patent/CN100532804C/zh not_active Expired - Lifetime
- 2003-03-18 WO PCT/DE2003/000880 patent/WO2004018867A1/de not_active Ceased
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5404855A (en) * | 1993-05-06 | 1995-04-11 | Cummins Engine Company, Inc. | Variable displacement high pressure pump for fuel injection systems |
| US5701872A (en) * | 1994-11-09 | 1997-12-30 | Sanshin Kogyo Kabushiki Kaisha | Vertical engine |
| DE19630938A1 (de) * | 1996-07-31 | 1998-02-05 | Siemens Ag | Kraftstoffzuleitung mit einem Volumenstromregelventil und Volumenstromregelventil |
| WO2000011342A1 (de) * | 1998-08-25 | 2000-03-02 | Siemens Aktiengesellschaft | Verfahren zum schnellen aufbau des kraftstoffdruckes in einem kraftstoffspeicher |
| DE19846157A1 (de) * | 1998-10-07 | 2000-04-13 | Bosch Gmbh Robert | Pumpenanordnung zur Kraftstoffhochdruckerzeugung |
| DE10118755A1 (de) * | 2000-04-18 | 2001-12-06 | Toyota Motor Co Ltd | Hochdruckpumpe |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005038237A1 (de) * | 2003-09-19 | 2005-04-28 | Robert Bosch Gmbh | Kraftstoffeinspritzeinrichtung für eine brennkraftmaschine |
| US7219654B2 (en) | 2003-09-19 | 2007-05-22 | Robert Bosch Gmbh | Fuel injection device for an internal combustion engine |
| ES2313845A1 (es) * | 2004-03-22 | 2009-03-01 | Emiliano Lopez-Cano Toribio | Metodo para la aplicacion de motores diesel a motocicletas. |
| ES2313845B1 (es) * | 2004-03-22 | 2010-01-11 | Emiliano Lopez-Cano Toribio | Metodo para la aplicacion de motores diesel a motocicletas. |
| CN103620199A (zh) * | 2011-06-23 | 2014-03-05 | 瓦锡兰芬兰有限公司 | 燃料喷射系统 |
| CN110939531A (zh) * | 2018-09-21 | 2020-03-31 | 罗伯特·博世有限公司 | 用于内燃机的燃料输送装置 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100532804C (zh) | 2009-08-26 |
| DE10237586A1 (de) | 2004-02-26 |
| EP1530681B1 (de) | 2007-07-11 |
| EP1530681A1 (de) | 2005-05-18 |
| CN1675463A (zh) | 2005-09-28 |
| EP1530681B2 (de) | 2018-09-26 |
| DE50307660D1 (de) | 2007-08-23 |
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