EP1298316B1 - Système d'injection de carburant - Google Patents

Système d'injection de carburant Download PDF

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Publication number
EP1298316B1
EP1298316B1 EP02021072A EP02021072A EP1298316B1 EP 1298316 B1 EP1298316 B1 EP 1298316B1 EP 02021072 A EP02021072 A EP 02021072A EP 02021072 A EP02021072 A EP 02021072A EP 1298316 B1 EP1298316 B1 EP 1298316B1
Authority
EP
European Patent Office
Prior art keywords
pump
internal combustion
combustion engine
pressure
injection
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.)
Revoked
Application number
EP02021072A
Other languages
German (de)
English (en)
Other versions
EP1298316A2 (fr
EP1298316A3 (fr
Inventor
Kai-Uwe Dr. Münch
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.)
Deutz AG
Original Assignee
Deutz AG
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7700403&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP1298316(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Deutz AG filed Critical Deutz AG
Publication of EP1298316A2 publication Critical patent/EP1298316A2/fr
Publication of EP1298316A3 publication Critical patent/EP1298316A3/fr
Application granted granted Critical
Publication of EP1298316B1 publication Critical patent/EP1298316B1/fr
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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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
    • F02M39/00—Arrangements of fuel-injection apparatus with respect to engines; Pump drives adapted to such arrangements
    • 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
    • F02M39/00—Arrangements of fuel-injection apparatus with respect to engines; Pump drives adapted to such arrangements
    • F02M39/02—Arrangements of fuel-injection apparatus to facilitate the driving of pumps; Arrangements of fuel-injection pumps; Pump drives
    • 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
    • F02M63/0265—Pumps feeding common rails
    • F02M63/027—More than one high pressure pump feeding a single common rail
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/02—Input parameters for engine control the parameters being related to the engine
    • F02D2200/06—Fuel or fuel supply system parameters
    • F02D2200/0602—Fuel pressure
    • 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

Definitions

  • the invention relates to an internal combustion engine with a fuel injection system having an uncontrolled high pressure pump, in the fuel supply line a fore pump and a control device are turned on and wherein the high pressure pump via a high pressure line to a high pressure storage device and this via an injection line and a control valve with an injection valve are connected.
  • the illustrated fuel injection pump assembly includes two high pressure pumps that fill independent high pressure accumulator devices with fuel.
  • the two high-pressure pumps each have a housing with an associated camshaft for actuating the bucket tappets.
  • This housing must be attached to a suitable point of the internal combustion engine and the camshaft be driven in a suitable manner.
  • a toothed belt with corresponding gears or meshing gears when driving the camshaft of the crankshaft of the internal combustion engine is required.
  • Another internal combustion engine with a fuel injection device for a self-igniting internal combustion engine is known from DE 195 08 445 A1 known.
  • This internal combustion engine has a high-pressure pump from which fuel is conveyed into a supply reservoir.
  • Fuel quantity the high pressure pump on a pump piston with a bevel for quantity control.
  • This pump piston is rotated by a control rod, wherein the adjustment of the control rod is effected by an adjusting device which evaluates the pressure prevailing in the supply reservoir pressure.
  • the invention has for its object to provide an air-compressing internal combustion engine with a fuel injection system designed as a common rail system, in particular with regard to the high-pressure pump and the drive is simple and with a conventional system has the same parts.
  • the high-pressure pump is a single pump element which has a pump housing which can be inserted into the crankcase of the internal combustion engine and the single pump element has an injection cam of a gas exchange camshaft having rolling roller tappet, which is connected to the pump plunger.
  • the control device is an electromagnetically actuated hydraulic valve.
  • This hydraulic valve or the hydraulic valve having a pressure control valve and a zero-delivery throttle is switched on at a suitable point in the supply line, which in a further embodiment is integrated directly in the crankcase or adapted to the crankcase.
  • the hydraulic valve preferably outside of the crankcase in the area is arranged adjacent to a single pump element, controls the fuel flow to the single pump element.
  • a comprehensive control or regulation of the fuel quantity to be fed into the high-pressure storage device is possible with a simple construction of the single pump element. It can also be provided two single pump elements, in which case the hydraulic valve is arranged between the individual pump elements.
  • the control device in addition to the electromagnetically operated hydraulic valve on a pressure control valve and a zero feed throttle.
  • excess fuel is again discharged into the fuel tank, in particular in the case of a constant delivery of fuel through a backing pump.
  • the backing pump is advantageously adjusted so that it delivers a quantity of fuel that is greater in each case than the maximum amount of fuel injected by the injection valves into the combustion chambers.
  • the delivery pressure in the low-pressure system is for example set to a value between 5 and 10 bar, preferably 7 bar.
  • the supply line between the hydraulic valve and the individual pump elements is relieved via the zero-feed throttle and discharged through the hydraulic valve leakage fuel flowing through.
  • the amount of fuel flowing out via the zero-delivery throttle is so small that there is no impairment of the fuel supply to the individual pump elements.
  • the hydraulic valve is in a further embodiment of the invention, a pulse width modulating hydraulic valve or a proportional horrndes hydraulic valve. Both variants allow accurate and reliable quantity control of the fuel to be supplied to the single pump elements, thus ensuring overall reliable and accurate fuel supply and pressure adjustment in the high pressure storage device.
  • Fig. 1 shows a schematically illustrated crankcase 3 of a self-igniting internal combustion engine 1 with a total of six cylinders.
  • the internal combustion engine has a crankshaft 2 mounted in the crankcase 3, which drives the camshaft 4 via a single meshing engagement, that is to say via a camshaft gearwheel 5b meshing with a crankshaft gearwheel 5a.
  • the camshaft 4 has each cylinder associated bearing points 8a, 8b, between which gas exchange cam 6a and 6b and an injection cam 7 are arranged.
  • the injection cam 7 can also be arranged between the gas exchange cam 6a and the gas exchange cam 6b.
  • the bearings 8a, 8b, the gas exchange cams 6a, 6b and the injection cam 7 go directly, so without punctures, into each other. As a result, a very stiff camshaft 4 is formed.
  • the crankcase 3 are recessed in accordance with the number of cylinders close to the cylinder head, into which a corresponding number of high-pressure pumps can be used.
  • these high-pressure pumps are connected via short injection lines directly to the injection valves.
  • the high-pressure pump is designed as a single pump element 10 that has a pump housing 19 which can be directly inserted into the crankcase 3.
  • a Zylinderplunger 13 is guided without control edge, the Zylinderplunger 13 cooperates with a roller tappet 9, which rolls on the injection cam 7.
  • a supply line 14 is further admitted for fuel, which is connected to the fuel supply to the injection pump element 10.
  • a second or further single pump element may be present if required by the corresponding design of the injection system for filling the high-pressure storage device 11. Otherwise, the recesses in the crankcase 3 for receiving the (conventional) high-pressure pumps with closure lids 18 are closed.
  • an electromagnetically actuated hydraulic valve 16 is switched on, which controls the fuel flow to the single pump element 10.
  • the single pump element 10 is connected via a high-pressure line 12 to the high-pressure accumulator device 11 and fills this quantity regulated by the hydraulic valve 16 with fuel.
  • injection pipes 17 which are connected to the injection valves 15 are exhausted.
  • control valves are installed, which control the amount of fuel delivered by the respective injection valve 15 into the combustion chamber.
  • Fig. 2 the fuel injection system is shown without reference to the internal combustion engine.
  • the fuel is supplied from a fore-pump 20 from a fuel tank 21 via a filter device 22 to the hydraulic valve 16.
  • the hydraulic valve 16 is connected via a supply line 14 with one or more individual pump elements 10, wherein the individual pump elements 10 via check valves 23 promote the fuel via high pressure lines 12 into the high pressure storage device 11.
  • the fuel is supplied to the injection valves 15 via injection lines 17.
  • the entire system, so in particular the hydraulic valve 16 and the control valves of the injectors 15 is controlled, the necessary parameters for controlling, for example, the pressure in the high-pressure accumulator device 11 are supplied as measured data to the control unit 24.
  • the detail enlargement A of the hydraulic valve 16 shows the preferred construction of this hydraulic valve 16, which additionally has a pressure regulating valve 25 and a zero feed throttle 26. In this case, the discharged from the pressure control valve 25 and the zero feed throttle 26 amount of fuel is returned to the fuel tank 26.

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

Claims (9)

  1. Moteur à combustion interne comprenant un système d'injection de carburant qui présente une pompe haute pression non régulée, dans la conduite d'alimentation en carburant (14) de laquelle sont montés une pré-pompe (20) et un dispositif de commande (16), la pompe haute pression étant connectée par le biais d'une conduite haute pression (12) à un dispositif d'accumulation de haute pression (11) et celui-ci étant connecté par le biais d'une conduite d'injection (17) et d'une soupape de commande à une soupape d'injection,
    caractérisé en ce qu'un dispositif de filtre (22) est monté dans la conduite d'alimentation (14), dans le sens de l'écoulement, derrière la pré-pompe (20) et avant le dispositif de commande, en ce que la pompe haute pression est un élément de pompe individuel (10) qui présente un carter de pompe (19) inséré dans le carter moteur (3) du moteur à combustion interne et en ce que l'élément de pompe individuel (10) présente un poussoir à galet (9) connecté au plongeur de la pompe et roulant sur une came d'injection (7) d'un arbre à cames d'échange gazeux (4).
  2. Moteur à combustion interne selon la revendication 1,
    caractérisé en ce que le plongeur de la pompe est un plongeur de cylindre (13) sans arête de commande .
  3. Moteur à combustion interne selon l'une quelconque des revendications précédentes, caractérisé en ce que le dispositif de commande est une soupape hydraulique (16) à commande électromagnétique.
  4. Moteur à combustion interne selon l'une quelconque des revendications 1 ou 2,
    caractérisé en ce que le dispositif de commande présente une soupape hydraulique (16) électromagnétique ainsi qu'une soupape de régulation de la pression (25) et un papillon à débit nul (26).
  5. Moteur à combustion interne selon l'une quelconque des revendications précédentes, caractérisé en ce que la soupape hydraulique (16) est une soupape hydraulique (16) à modulation de largeur d'impulsion.
  6. Moteur à combustion interne selon l'une quelconque des revendications 1 à 4, caractérisé en ce que la soupape hydraulique (16) est une soupape hydraulique à commande proportionnelle (16).
  7. Moteur à combustion interne selon l'une quelconque des revendications précédentes, caractérisé en ce que la conduite d'alimentation (14) est intégrée dans le carter moteur (3).
  8. Moteur à combustion interne selon l'une quelconque des revendications 1 à 6, caractérisé en ce que la conduite d'alimentation (14) est adaptée au carter moteur (3).
  9. Moteur à combustion interne selon l'une quelconque des revendications précédentes, caractérisé en ce qu'un amplificateur de pression est monté dans la conduite d'injection (17) et/ou dans la soupape d'injection (15).
EP02021072A 2001-09-26 2002-09-21 Système d'injection de carburant Revoked EP1298316B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10147534 2001-09-26
DE10147534A DE10147534A1 (de) 2001-09-26 2001-09-26 Kraftstoff-Einspritzsystem

Publications (3)

Publication Number Publication Date
EP1298316A2 EP1298316A2 (fr) 2003-04-02
EP1298316A3 EP1298316A3 (fr) 2005-02-02
EP1298316B1 true EP1298316B1 (fr) 2008-05-07

Family

ID=7700403

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02021072A Revoked EP1298316B1 (fr) 2001-09-26 2002-09-21 Système d'injection de carburant

Country Status (6)

Country Link
EP (1) EP1298316B1 (fr)
AT (1) ATE394594T1 (fr)
DE (2) DE10147534A1 (fr)
DK (1) DK1298316T3 (fr)
ES (1) ES2305166T3 (fr)
PT (1) PT1298316E (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2172634A2 (fr) 2008-10-02 2010-04-07 DEUTZ Aktiengesellschaft Concept de réglage de pression de rail pour régulateur de pression de rail doté de plusieurs actionneurs
CN101086242B (zh) * 2006-06-09 2011-04-20 C.R.F.索奇埃塔·孔索尔蒂莱·佩尔·阿齐奥尼 内燃机喷油系统

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10237586A1 (de) † 2002-08-16 2004-02-26 Robert Bosch Gmbh Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine
JP2004316518A (ja) * 2003-04-15 2004-11-11 Denso Corp 高圧燃料供給装置
EP1657434B1 (fr) * 2004-11-12 2007-02-28 C.R.F. Società Consortile per Azioni Pompe à haute pression avec une installation pour régulation du débit pour un système d'injection de carburant
DE102008008259A1 (de) * 2008-02-08 2009-08-13 Deutz Ag Brennkraftmaschine mit einem Common-Rail-Einspritzsystem

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5230613A (en) 1990-07-16 1993-07-27 Diesel Technology Company Common rail fuel injection system
AU6785994A (en) * 1993-05-06 1994-12-12 Cummins Engine Company Inc. Variable displacement high pressure pump for common rail fuel injection systems
JP3077738B2 (ja) * 1994-04-28 2000-08-14 株式会社デンソー 高圧サプライポンプ
DE19508445B4 (de) * 1995-03-09 2004-07-08 Deutz Ag Kraftstoffeinspritzvorrichtung für eine selbstzündende Brennkraftmaschine
DE19716513C2 (de) * 1997-04-19 1999-02-11 Mtu Friedrichshafen Gmbh Kraftstoffeinspritzsystem für einen Verbrennungsmotor mit einer Common-Rail-Schiene
DE19719265A1 (de) * 1997-05-07 1998-11-12 Deutz Ag Einspritzsystem einer Brennkraftmaschine
EP0915252A3 (fr) * 1997-11-05 2000-03-15 SIG Schweizerische Industrie-Gesellschaft Système d'injection par alimentation commune des injecteurs

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101086242B (zh) * 2006-06-09 2011-04-20 C.R.F.索奇埃塔·孔索尔蒂莱·佩尔·阿齐奥尼 内燃机喷油系统
EP2172634A2 (fr) 2008-10-02 2010-04-07 DEUTZ Aktiengesellschaft Concept de réglage de pression de rail pour régulateur de pression de rail doté de plusieurs actionneurs
DE102008049964A1 (de) 2008-10-02 2010-04-08 Deutz Ag Raildruckregelungskonzept für Raildruckregler mit mehreren Stellgliedern

Also Published As

Publication number Publication date
EP1298316A2 (fr) 2003-04-02
DK1298316T3 (da) 2008-08-11
ATE394594T1 (de) 2008-05-15
DE50212211D1 (de) 2008-06-19
PT1298316E (pt) 2008-07-29
ES2305166T3 (es) 2008-11-01
EP1298316A3 (fr) 2005-02-02
DE10147534A1 (de) 2003-04-30

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