EP2734725B1 - Système d'injection haute pression - Google Patents

Système d'injection haute pression Download PDF

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Publication number
EP2734725B1
EP2734725B1 EP12733611.3A EP12733611A EP2734725B1 EP 2734725 B1 EP2734725 B1 EP 2734725B1 EP 12733611 A EP12733611 A EP 12733611A EP 2734725 B1 EP2734725 B1 EP 2734725B1
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EP
European Patent Office
Prior art keywords
pressure
pump
fuel
predelivery
rail
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.)
Not-in-force
Application number
EP12733611.3A
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German (de)
English (en)
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EP2734725A1 (fr
Inventor
Christian Langenbach
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Robert Bosch GmbH
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Robert Bosch GmbH
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Publication of EP2734725A1 publication Critical patent/EP2734725A1/fr
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Publication of EP2734725B1 publication Critical patent/EP2734725B1/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D33/00—Controlling delivery of fuel or combustion-air, not otherwise provided for
    • F02D33/003—Controlling the feeding of liquid fuel from storage containers to carburettors or fuel-injection apparatus ; Failure or leakage prevention; Diagnosis or detection of failure; Arrangement of sensors in the fuel system; Electric wiring; Electrostatic discharge
    • F02D33/006—Controlling the feeding of liquid fuel from storage containers to carburettors or fuel-injection apparatus ; Failure or leakage prevention; Diagnosis or detection of failure; Arrangement of sensors in the fuel system; Electric wiring; Electrostatic discharge depending on engine operating conditions, e.g. start, stop or ambient conditions
    • 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
    • F02D41/02—Circuit arrangements for generating control signals
    • F02D41/04—Introducing corrections for particular operating conditions
    • F02D41/06—Introducing corrections for particular operating conditions for engine starting or warming up
    • F02D41/062—Introducing corrections for particular operating conditions for engine starting or warming up for starting
    • 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
    • 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
    • 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
    • F02M59/38—Pumps characterised by adaptations to special uses or conditions
    • F02M59/42—Pumps characterised by adaptations to special uses or conditions for starting of engines
    • 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
    • F02M63/0265—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
    • 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

Definitions

  • the present invention relates to a method for operating a high-pressure injection system according to the preamble of claim 1 and to a high-pressure injection system according to the preamble of claim 8.
  • a high-pressure pump In high-pressure injection systems for internal combustion engines, in particular in common-rail injection systems of diesel or gasoline engines, a high-pressure pump permanently ensures the maintenance of the pressure in the high-pressure accumulator or high-pressure rail of the common-rail injection system.
  • the high-pressure pump can be driven, for example, by a camshaft of the internal combustion engine by means of a drive shaft.
  • Vor detailpumpen, z. B. a gear or rotary vane pump used, which are connected upstream of the high-pressure pump.
  • the prefeed pump delivers the fuel from a fuel tank through a fuel line to the high pressure pump.
  • piston pumps are used as high-pressure pumps.
  • a drive shaft is mounted. Radially to pistons are arranged in a cylinder.
  • a roller with a roller rolling surface On the drive shaft with at least one cam is a roller with a roller rolling surface, which is mounted in a roller shoe.
  • the roller shoe is connected to the piston, so that the piston is forced to oscillate translational motion.
  • a spring applies to the roller shoe a radially directed to the drive shaft force, so that the roller is in constant contact with the drive shaft.
  • the roller stands with the roller rolling surface on a shaft rolling surface as the surface of the drive shaft with the at least one cam in contact with the drive shaft.
  • the roller is mounted by means of a sliding bearing in the roller shoe.
  • the high-pressure wave is, as already described, by a shaft, z. B. a camshaft of the engine driven.
  • the high-pressure pump can promote fuel under high pressure to a high-pressure rail, it is thus necessary that the engine is driven or started by an electric starter motor. Only with a rotational movement of the crankshaft or a camshaft of the internal combustion engine and a drive shaft of the high-pressure pump performs a rotational movement, so that only at the beginning of starting the engine from the high-pressure pump fuel can be promoted to the high-pressure rail. As a result, at the beginning of the starting process, there is no sufficient starting pressure on the high-pressure rail and thus on valves or injection valves or injectors.
  • the DE 10 2006 045 933 A1 shows a high-pressure pump for high-pressure fuel delivery.
  • the high-pressure pump has a drive shaft with cams. Cylindrical rollers are supported by roller shoes and rest on the cams. The roller shoes are mounted by means of a plunger assembly in a bore of a part of the housing. The pump elements are attached to the plunger assembly. A coil spring presses the plunger assembly onto the cams.
  • a radial piston pump for fuel high pressure generation in fuel injection systems of internal combustion engines known.
  • a pump housing In a pump housing is a drive shaft stored. Pistons are supported on the drive shaft, so that by rotating the drive shaft, the pistons are moved back and forth. Between the piston and the drive shaft tappets are arranged.
  • the DE 10 2009 029 573 A shows a high-pressure pump for high-pressure fuel delivery.
  • a method of operating a high pressure injection system for an internal combustion engine comprising the steps of: delivering fuel to a high pressure pump with a prime pump, delivering fuel to the high pressure pump to a high pressure rail under high pressure, delivering fuel to the priming pump Starting the internal combustion engine to the high-pressure rail, wherein the prefeed pump is operated in two different flow directions and in a first conveying direction, the fuel is conveyed to the high-pressure pump and in a second, the first conveying direction opposite conveying direction of the fuel before starting the engine in promoted the high-pressure rail.
  • the prefeed pump is operated in two different directions of flow.
  • the fuel is supplied to the prefeed pump without passing the fuel through the high pressure pump prior to starting the engine to the high pressure rail.
  • the fuel can thus be supplied to the high-pressure rail advantageously before starting the internal combustion engine directly without passing through the high pressure pump in an advantageous manner. This makes it possible that a starting pressure in the high-pressure rail can be built up very quickly before starting the internal combustion engine.
  • the fuel is conveyed by the high-pressure pump through an HP fuel line into the high-pressure rail and the fuel is conveyed by the prefeed pump through an LP fuel line into the high-pressure rail.
  • the fuel is thus supplied during operation of the internal combustion engine through the HP fuel line from the high-pressure pump to the high pressure rail and before starting the engine directly from the prefeed pump through the LP fuel line to the high-pressure rail.
  • check valves whether the fuel is conveyed by the prefeed pump in the high-pressure pump or in the high-pressure rail.
  • check valves only check valves and a prefeed pump with two different flow directions are required in order either to feed the fuel from the prefeed pump of the high-pressure pump or directly through the LP fuel line from the prefeed pump to the high-pressure rail.
  • the fuel is conveyed to the high-pressure rail for at least 1 s, 5 s, 10 s or 20 s before starting the internal combustion engine and / or the high-pressure pump with the prefeed pump.
  • the fuel with the prefeed pump with a starting pressure for. B. at least 30 bar, 50 bar or 70 bar, in particular between 80 bar and 120 bar, promoted to the high-pressure rail.
  • the high-pressure pump is mechanically driven by the internal combustion engine and / or the prefeed pump is driven by an electric motor.
  • the prefeed pump is driven by the electric motor because the prefeed pump promotes the fuel to the high-pressure rail before an operation of the internal combustion engine.
  • the electric motor is operated in the first conveying direction of the prefeed pump with a first direction of rotation and in the second conveying direction of the prefeed pump, the electric motor is operated in a second direction of rotation, wherein the first and second directions of rotation of the electric motor are oppositely directed.
  • the prefeed pump is driven by the electric motor with an intermediate gear and by means of the transmission, the conveying direction of the prefeed pump can be switched from the first conveying direction in the second conveying direction and vice versa.
  • the prefeed pump is attached to the high-pressure pump and / or integrated.
  • the prefeed pump is designed as a vane pump.
  • Inventive high-pressure injection system for an internal combustion engine in particular for a motor vehicle, comprising a high-pressure pump, a prefeed pump, a high-pressure rail, wherein a method described in this patent application is executable.
  • the prefeed pump has an inlet opening as a suction side and an outlet opening as a pressure side and the prefeed pump is operable in two different, oppositely directed conveying directions, so that the inlet opening as the suction side and the outlet opening as the pressure side are interchangeable.
  • the prefeed pump is hydraulically connected with an LP fuel line to the high-pressure rail and is hydraulically connected to a high-pressure pump with a VHD fuel line.
  • non-return valves are arranged in fuel lines, so that due to the check valves in a first conveying direction of the prefeed pump, the fuel from the feed pump, in particular exclusively, in the high-pressure pump is conveyed and in a second conveying direction of the high-pressure pump of the fuel, in particular exclusively, in the High pressure rail is eligible. Only by means of check valves and a prefeed pump, which is operable in two different opposite directions of delivery, thus can be used by the prefeed pump alternately the fuel either the high-pressure pump or be fed directly to the high-pressure rail through the ND fuel line before starting the engine. This makes the high-pressure injection system particularly easy to manufacture and operate, inexpensive and reliable.
  • the prefeed pump is a gear pump and / or the delivery rate of the prefeed pump is controllable and / or regulated and / or the prefeed pump is an electric prefeed pump with an electric motor and / or of the prefeed pump is the fuel with a prefeed, z. B. between 3 and 6 bar, and a starting pressure, z. B. between 50 and 150 bar, eligible.
  • the fuel with the prefeed pump with a starting pressure for. B. at least 30 bar, 50 bar or 70 bar, in particular between 80 bar and 120 bar, promoted to the high-pressure rail.
  • the fuel is supplied from the prefeed pump with a prefeed pressure, for. B. in the range between 3 bar and 6 bar, in particular in the range of about 4 bar promoted.
  • this prefeed pressure is not sufficient to allow valves, such.
  • injectors or injectors the fuel can be injected into the combustion chambers of the engine.
  • a higher starting pressure for example of at least 20 bar, 50 bar, 80 bar or 90 bar is required.
  • the prefeed pump is due to its structural design in a position to provide such a high starting pressure available, so that with the prefeed pump, a sufficient starting pressure can be provided without an operation of the high-pressure pump.
  • the electric motor of the prefeed pump is integrated in the prefeed pump, z. B. by permanent magnets are installed in a gear.
  • the electric motor is a brushless electric motor and / or an electronically commutated electric motor.
  • the producible by the high-pressure pump pressure in the high-pressure rail is, for example, in the range of 1000 to 3000 bar z. B. for diesel engines or between 40 bar and 400 bar z. B. for gasoline engines.
  • Fig. 1 is highly schematic of a high-pressure injection system 1 shown.
  • the high-pressure injection system 1 comprises a high-pressure pump 2, by means of which a high-pressure rail 10 supplies fuel through an HP fuel line 12 under high pressure.
  • a high-pressure rail 10 for example, there is a pressure in the range of 1000 to 3000 bar for diesel engines and 40 to 400 bar for gasoline engines.
  • fuel is supplied by means not shown injectors in the combustion chambers of an internal combustion engine.
  • the high pressure pump 2 is driven by the engine 8 through a drive shaft 9.
  • the high-pressure injection system 1 further comprises an electric prefeed pump 3 with an inlet opening 24 and an outlet opening 25.
  • the electric prefeed pump 3 is driven by an electric motor 7 and is a rotary vane pump or a gear pump 4, preferably an internal gear pump 5, in particular a gerotor pump 6.
  • the prefeed pump 3 is operable in two different opposite conveying directions, such that the inlet opening 24 and the outlet opening 25 are interchangeable.
  • a first conveying direction the fuel is supplied to the high-pressure pump 2 through a VHD fuel line 14 and supplied to the high-pressure rail 10 in a second conveying direction opposite the first conveying direction through an LP fuel line 13.
  • ND fuel line 13 thus the prefeed pump 3 is directly connected to the high-pressure rail 10.
  • the prefeed pump 3 sucks in the first conveying direction through a first fuel suction 15 fuel from a fuel tank 11 and then promotes this with a Vor fundamentaltik, for example between 3 and 6 bar, through the VHD fuel line 14 to the high-pressure pump 2.
  • the prefeed pump 3 sucks fuel from the fuel tank 11 through a second fuel suction line 16 and delivers it through the LP fuel line 13 to the high-pressure rail 10 at a starting pressure, for example between 50 and 150 bar.
  • a first check valve 17 is arranged hydraulically between the high-pressure pump 2 and the mouth or branch of the second fuel suction line 16 into the VHD fuel line 14.
  • a second check valve 18 is disposed between the mouth or branch of the LP fuel line 13 in the first fuel suction 15.
  • the first and second check valves 17, 18 are designed such that the fuel in the first conveying direction of the prefeed pump 3 exclusively in the first conveying direction of the prefeed pump 3, that is from the fuel tank 11 through the first fuel suction 15 and through the VHD fuel line fourteenth to the high pressure pump 2, can be passed and no reverse flow direction is possible.
  • a third check valve 19 and in the second Kraftstoffsaugtechnisch 16 a fourth check valve 20 is arranged in the LP fuel line 13.
  • the third and fourth check valves 19, 20 are designed such that in the first conveying direction of the prefeed pump 3 from the prefeed pump 3 no fuel from the high-pressure rail 10 can be sucked and no fuel is passed through the second fuel suction 16 into the fuel tank 11 ,
  • the fuel is sucked through the second fuel suction 16 from the prefeed pump 3 from the fuel tank 11 and then directly through the LP fuel line 13 without passage through the high-pressure pump 2 the high-pressure rail 10 fed.
  • the second check valve 18 prevents fuel from being returned to the fuel tank 11 through the first fuel suction line 15 and prevents the first check valve 17 from being sucked from the high pressure pump 2 by the prefeed pump 3 in the second conveying direction.
  • the second and fourth check valves 18, 20 prevent the prefeed pump 3 from idling, that is, the fuel flows into the fuel tank 11, and the first check valve 17 also prevents the high-pressure pump 2 from running at a standstill the high-pressure pump 2 and the prefeed pump 3rd
  • a pressure sensor 22 detects the pressure of the fuel at the high-pressure rail 10 and by means of a control unit 22 the prefeed pump 3 is controlled and / or regulated as a function of the pressure detected by the pressure sensor 22.
  • High-pressure injection system 1 associated significant benefits. Only by means of the feed pump 3 operable in two directions and with the check valves 17, 18, 19 and 20, it is technically simple and thus inexpensive possible to supply fuel through the prefeed pump 3 before starting the engine 8 at a starting pressure directly to the high-pressure rail.
  • the internal combustion engine 8 can be started very quickly, for example, ignition can already take place at the first top dead center of the internal combustion engine 8, because in the high-pressure rail 10 already before the start of the engine 8 from the prefeed pump 3 just a sufficient starting pressure of, for example, at least 50 bar has been established.

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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)

Claims (12)

  1. Procédé pour faire fonctionner un système d'injection à haute pression (1) pour un moteur à combustion interne (8), comprenant les étapes suivantes :
    - refoulement de carburant avec une pompe de pré-refoulement (3) vers une pompe haute pression (2),
    - refoulement de carburant avec la pompe haute pression (2) à une rampe à haute pression (10) à une pression élevée,
    - refoulement de carburant avec la pompe de pré-refoulement (3) avant un démarrage du moteur à combustion interne (8) à la rampe à haute pression (10),
    caractérisé en ce que
    la pompe de pré-refoulement (3) est entraînée dans deux directions de refoulement différentes et, dans une première direction de refoulement, le carburant est refoulé vers la pompe haute pression (2) et dans une deuxième direction de refoulement opposée à la première direction de refoulement, le carburant est refoulé avant le démarrage du moteur à combustion interne (8) par une conduite de carburant basse pression (13) dans la rampe à haute pression (10).
  2. Procédé selon la revendication 1,
    caractérisé en ce que
    le carburant est conduit avec la pompe de pré-refoulement (3) à la rampe à haute pression (10) sans passer à travers la pompe haute pression (2) avant le démarrage du moteur à combustion interne (8).
  3. Procédé selon la revendication 1 ou 2,
    caractérisé en ce que
    le carburant est refoulé depuis la pompe haute pression (2) par une conduite de carburant haute pression (12) dans la rampe à haute pression (10) et le carburant est refoulé depuis la pompe de pré-refoulement (3) à travers une conduite de carburant basse pression (13) dans la rampe à haute pression (10).
  4. Procédé selon l'une quelconque ou plusieurs des revendications précédentes,
    caractérisé en ce que
    l'on commande au moyen de clapets antiretour (17, 18, 19, 20) si le carburant provenant de la pompe de pré-refoulement (3) est refoulé dans la pompe haute pression (2) ou dans la rampe à haute pression (10).
  5. Procédé selon l'une quelconque ou plusieurs des revendications précédentes,
    caractérisé en ce que
    au moins 1s, 5s, 10s ou 20s avant le démarrage du moteur à combustion interne (8) et/ou de la pompe haute pression (2), le carburant est refoulé avec la pompe de pré-refoulement (3) vers la rampe haute pression (10).
  6. Procédé selon l'une quelconque ou plusieurs des revendications précédentes,
    caractérisé en ce que
    le carburant est refoulé avec la pompe de pré-refoulement (3) à une pression de démarrage, par exemple d'au moins 30 bar, 50 bar ou 70 bar, en particulier entre 80 bar et 120 bar, vers la rampe haute pression (10).
  7. Procédé selon l'une quelconque ou plusieurs des revendications précédentes,
    caractérisé en ce que
    la pompe haute pression (2) est entraînée mécaniquement par le moteur à combustion interne (8)
    et/ou
    la pompe de pré-refoulement (3) est entraînée par un moteur électrique (7).
  8. Système d'injection à haute pression (1) pour un moteur à combustion interne (8), en particulier pour un véhicule automobile (23), comprenant :
    - une pompe à haute pression (2),
    - une pompe de pré-refoulement (3),
    - une rampe à haute pression (10),
    - une conduite de carburant basse pression (13),
    caractérisé en ce
    qu'un procédé selon l'une quelconque ou plusieurs des revendications précédentes peut être mis en oeuvre.
  9. Système d'injection à haute pression selon la revendication 8,
    caractérisé en ce que
    la pompe de pré-refoulement (3) présente une ouverture d'entrée (24) en tant que côté d'aspiration et une ouverture de sortie (25) en tant que côté de pression et la pompe de pré-refoulement (3) peut être entraînée dans deux directions de refoulement différentes, orientées en sens inverse, de telle sorte que l'ouverture d'entrée (24) en tant que côté d'aspiration et l'ouverture de sortie (25) en tant que côté de pression puissent être interchangeables.
  10. Système d'injection à haute pression selon la revendication 8 ou 9,
    caractérisé en ce que
    la pompe de pré-refoulement (3) est connectée hydrauliquement par une conduite de carburant basse pression (13) à la rampe haute pression (10) et par une conduite de carburant à pré-pression élevée (14) à la pompe haute pression (2).
  11. Système d'injection à haute pression selon l'une quelconque ou plusieurs des revendications 8 à 10, caractérisé en ce que
    dans des conduites de carburant (13, 14, 15, 16) sont disposés des clapets antiretour (17, 18, 19, 20) de telle sorte que du fait des clapets antiretour (17, 18, 19, 20), dans une première direction de refoulement de la pompe de pré-refoulement (3), le carburant puisse être refoulé depuis la pompe de pré-refoulement (3), en particulier exclusivement, dans la pompe haute pression (2), et dans une deuxième direction de refoulement de la pompe haute pression (2), le carburant puisse être refoulé, de préférence exclusivement, dans la rampe haute pression (10).
  12. Système d'injection haute pression selon l'une quelconque ou plusieurs des revendications 8 à 11, caractérisé en ce que
    la pompe de pré-refoulement (3) est une pompe à engrenages (4)
    et/ou
    la puissance de refoulement de la pompe de pré-refoulement (3) peut être commandée et/ou régulée, et/ou
    la pompe de pré-refoulement (3) est une pompe de pré-refoulement électrique (3) avec un moteur électrique (7),
    et/ou
    le carburant peut être refoulé depuis la pompe de pré-refoulement (7) à une pression de pré-refoulement, par exemple comprise entre 3 et 6 bar, et à une pression de démarrage, par exemple comprise entre 50 et 150 bar.
EP12733611.3A 2011-07-22 2012-06-12 Système d'injection haute pression Not-in-force EP2734725B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011079673A DE102011079673A1 (de) 2011-07-22 2011-07-22 Hochdruckeinspritzsystem
PCT/EP2012/061123 WO2013013878A1 (fr) 2011-07-22 2012-06-12 Système d'injection haute pression

Publications (2)

Publication Number Publication Date
EP2734725A1 EP2734725A1 (fr) 2014-05-28
EP2734725B1 true EP2734725B1 (fr) 2018-08-08

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP12733611.3A Not-in-force EP2734725B1 (fr) 2011-07-22 2012-06-12 Système d'injection haute pression

Country Status (7)

Country Link
EP (1) EP2734725B1 (fr)
JP (1) JP5786094B2 (fr)
KR (1) KR101929079B1 (fr)
CN (1) CN103688047B (fr)
DE (1) DE102011079673A1 (fr)
RU (1) RU2603711C2 (fr)
WO (1) WO2013013878A1 (fr)

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SE538000C2 (sv) * 2014-05-14 2016-02-02 Scania Cv Ab Bränslesystem för förbränningsmotor och ett förfarande för att reglera ett bränslesystem
DE102016200232A1 (de) * 2016-01-12 2017-07-13 Continental Automotive Gmbh Kraftstoffeinspritzsystem
SE541444C2 (en) * 2016-07-18 2019-10-01 Scania Cv Ab Fuel system comprising a high pressure pump adapted to pump fuel in case of failure of other fuel pumps

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU44415A1 (ru) * 1934-12-02 1935-09-30 Е.Е. Лонткевич Топливный насос дл двигателей внутреннего горени
RU2062345C1 (ru) * 1992-06-30 1996-06-20 Центральный научно-исследовательский автомобильный и автомоторный институт Топливоподающий агрегат двигателя внутреннего сгорания
US6604508B2 (en) * 2001-09-04 2003-08-12 Caterpillar Inc Volume reducer for pressurizing engine hydraulic system
JP3814245B2 (ja) * 2002-11-21 2006-08-23 ヤンマー株式会社 燃料噴射ポンプ
JP4002860B2 (ja) * 2003-06-12 2007-11-07 ヤンマー株式会社 燃料噴射ポンプの燃料噴射制御装置
JP3993841B2 (ja) * 2003-06-12 2007-10-17 ヤンマー株式会社 低温始動進角機構を備える燃料噴射ポンプ
DE10356262A1 (de) 2003-12-03 2005-06-30 Robert Bosch Gmbh Radialkolbenpumpe, insbesondere für Kraftstoffeinspritzsysteme
JP2008045536A (ja) * 2006-07-20 2008-02-28 Toyota Industries Corp Ｄｍｅエンジンの燃料供給装置
DE102006045933A1 (de) 2006-09-28 2008-04-03 Robert Bosch Gmbh Stößelbaugruppe für eine Hochdruckpumpe und Hochdruckpumpe mit wenigstens einer Stößelbaugruppe
DE102009029573A1 (de) * 2009-09-18 2011-03-24 Robert Bosch Gmbh Kraftstoffeinspritzsystem

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

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EP2734725A1 (fr) 2014-05-28
WO2013013878A1 (fr) 2013-01-31
KR20140041778A (ko) 2014-04-04
CN103688047A (zh) 2014-03-26
DE102011079673A1 (de) 2013-01-24
CN103688047B (zh) 2016-09-28
RU2014106613A (ru) 2015-08-27
RU2603711C2 (ru) 2016-11-27
JP2014521013A (ja) 2014-08-25
KR101929079B1 (ko) 2018-12-13
JP5786094B2 (ja) 2015-09-30

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