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EP2217795B1 - Système d'injection de carburant pour un moteur à combustion interne à injecteur de hc - Google Patents

Système d'injection de carburant pour un moteur à combustion interne à injecteur de hc Download PDF

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Publication number
EP2217795B1
EP2217795B1 EP08855268A EP08855268A EP2217795B1 EP 2217795 B1 EP2217795 B1 EP 2217795B1 EP 08855268 A EP08855268 A EP 08855268A EP 08855268 A EP08855268 A EP 08855268A EP 2217795 B1 EP2217795 B1 EP 2217795B1
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EP
European Patent Office
Prior art keywords
pump
pressure
fuel
low
pressure region
Prior art date
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Active
Application number
EP08855268A
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German (de)
English (en)
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EP2217795A2 (fr
Inventor
Christian Langenbach
Marcus Kristen
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Robert Bosch GmbH
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Robert Bosch GmbH
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Publication of EP2217795A2 publication Critical patent/EP2217795A2/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
    • F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
    • F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
    • F01N3/025—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using fuel burner or by adding fuel to exhaust
    • F01N3/0253—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using fuel burner or by adding fuel to exhaust adding fuel to exhaust gases
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/03—Adding substances to exhaust gases the substance being hydrocarbons, e.g. engine fuel
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2610/00—Adding substances to exhaust gases
    • F01N2610/14—Arrangements for the supply of substances, e.g. conduits

Definitions

  • HC injectors inject fuel upstream of the particulate filter (s) into the exhaust pipe, thereby allowing better control of the regeneration of the particulate filter.
  • a fuel injection system that has a delivery pump that delivers fuel from a tank to a high pressure pump.
  • the high-pressure pump delivers the fuel to a high-pressure accumulator which is followed by several injectors.
  • a regeneration system for a particulate filter having an injector to which fuel is supplied by the feed pump from the tank via a controllable valve.
  • the invention has for its object to provide a fuel injection system with an HC injector, which is optimized in terms of efficiency and cost.
  • a fuel injection system of an internal combustion engine having a low pressure region and a high pressure region, wherein in the low pressure region a prefeed pump is provided which promotes fuel from a fuel tank to a high pressure pump, and wherein in the high pressure region, a high pressure pump is provided, which are under high pressure Fuel to a common rail or at least one injector promotes, thereby solved, that the low-pressure region comprises at least one HC injector and that the at least one HC injector injects fuel upstream of one or more particulate filter in the exhaust aftertreatment device of the internal combustion engine.
  • Due to the invention claimed integration of the HC injector in the low pressure region of the fuel injection system can account for a separate fuel pump for the HC injector. Rather, the already existing feed pump is used if necessary for the promotion of fuel in the HC injector. This results in a simplification of the fuel injection system and the production costs are significantly lower. In addition, there is the advantage that no further fuel pump is required, whereby the weight and consequent fuel consumption and the CO2 emission of a vehicle equipped with the fuel injection system vehicle are low.
  • the feed pump is designed as an electrically driven fuel pump or as a mechanically driven fuel pump.
  • a switchable additional fuel pump is still provided.
  • This usually electrically powered switchable additional fuel pump is usually to do so, when starting the engine to achieve the fastest possible pressure build-up. Furthermore, this additional fuel pump can be used to refill the fuel injection system after a Tankleer mars. As soon as the internal combustion engine has started and the mechanically driven delivery pump builds up sufficient pressure, the additional fuel pump is switched off again. According to the invention, the additional fuel pump can now be switched on while the internal combustion engine is running, so that a two-stage pressure increase takes place in the low-pressure region of the fuel injection system. The first pressure increase is effected by the additional fuel pump, while the mechanically driven feed pump arranged downstream thereof effects a further pressure increase.
  • the pressure on the pressure side of the prefeed pump is briefly and selectively increased during this particular mode of operation, so that a sufficiently high pressure for injecting fuel through the HC injector in the low pressure region is present. Since the electrically switchable additional fuel pump anyway has very low operating times, the additional short stress of about 10 to 20 minutes for regeneration readily possible and requires no additional measures to increase the robustness and life of the already existing additional fuel pump.
  • the at least one HC injector it is possible to connect the at least one HC injector to a fuel supply line or an interior of the high-pressure fuel pump. Of course, it is also possible to connect the at least one HC injector to a return line.
  • a pressure control valve is arranged between the interior of the high-pressure fuel pump and the return line.
  • this pressure control valve With the help of this pressure control valve, the operating pressure of the low pressure region of the internal combustion engine is regulated in normal operation.
  • the pressure control valve may, for example, the pressure in the fuel inlet on the suction side the prefeed pump are controlled. By briefly increasing the delivery rate of the prefeed pump and the pressure in the low pressure region increases according to the characteristic of the pressure control valve.
  • the above object is also achieved by a method for operating a fuel injection system having a low-pressure region and a high-pressure region, wherein in the low-pressure region, a prefeed pump is provided which promotes fuel from a fuel tank to a high-pressure pump, and wherein in the high-pressure region, a high-pressure pump is provided at high pressure fuel in a common rail or at least one injector promotes, wherein at least one HC injector is connected to the low pressure region and wherein the at least one HC injector injects fuel upstream of one or more particulate filter in an exhaust pipe of the internal combustion engine, if necessary , is achieved in that during the injection of fuel through the HC injector, the pressure in the low pressure region of the fuel injection system is raised.
  • the prefeed pump does not need to be designed for a steady-state pressure equal to the injection pressure of the HC injector. It is sufficient if the prefeed pump can provide the injection pressure of the HC injector for a short time, that is to say a few minutes. As a result, the prefeed pump can be designed to be less expensive and smaller.
  • the invention claimed temporary increase in pressure in the low pressure range can be done in an electrically driven feed pump by increasing the drive voltage of the same or in a pressure-controlled electrically driven pump by increasing the setpoint of the pressure.
  • FIG. 1 shows a first embodiment of a fuel injection system according to the invention in a block diagram representation.
  • the fuel injection system comprises, inter alia, a high-pressure fuel pump 1, a tank 3, a pressure sensor 4, an electrically driven prefeed pump 5, a fuel filter 7, a rail 9 and a pressure relief valve 11.
  • the injectors connected to the rail 9 are in FIG. 1 not shown.
  • the pressure limiting valve 11 opens into a return line 13, in which the leakage quantities of the injectors, not shown, are discharged.
  • the return line 13 opens in this embodiment in the tank 3 and drives there a jet pump 10 at.
  • a temperature sensor T Inside the high-pressure fuel pump 1 may optionally be arranged a temperature sensor T.
  • the high-pressure fuel pump 1 is hydraulically connected to the tank 3 via a fuel inlet 15, the filter 7 and the prefeed pump 5. Downstream of the prefeed pump 5, an HC injector 16 is connected to the fuel inlet 15. If necessary, fuel can be injected into an exhaust pipe (not shown) of the internal combustion engine with the HC injector 16. The targeted injection of fuel into the exhaust pipe at a location upstream of a particulate filter, the regeneration of the particulate filter can be triggered.
  • the fuel inlet 15 connects a delivery side of the prefeed pump 5 with an interior 17 of the pump housing of the high-pressure pump 1, so that the entire delivery flow of the prefeed pump 5 passes into the interior 17.
  • a connecting line 18 provides a hydraulic connection between the interior 17 of the pump housing on the one hand and a Metering unit 19 and the return line 13 on the other hand forth. Between the connecting line 18 and the return line 13, a pressure regulating valve 20 is arranged.
  • the metering unit 19 serves to control the amount of fuel sucked by pump elements 21 of the high-pressure fuel pump 1 and thus also the delivery rate thereof.
  • the suction sides of the pump elements 21 are hydraulically connected via a distribution line 23 to the output of the metering unit 19.
  • the pump elements 21 consist essentially of suction valves 25, high-pressure side check valves 27 and a piston 29 which oscillates in a cylinder bore (without reference numeral).
  • the pistons 29 of the pump elements 21 are driven by roller tappets 31 of cams 33 of a drive shaft 35.
  • the pump elements 21 convey fuel under high pressure via a high-pressure line 34 into the rail 9.
  • the cams 33 are part of a drive shaft 35, which is rotatably mounted on both sides of the cam 33 in a first bearing and in a second bearing in a pump housing (not shown).
  • the drive shaft 35 is arranged in the interior 17 of the pump housing.
  • the bearings of the drive shaft 35 are forcibly traversed by a partial flow of the fuel flowing from the fuel inlet 15 into the interior 17 of the pump housing fuel and are in the block diagram according to FIG. 1 shown as throttle points.
  • the first camp has in FIG. 1 the reference numeral 39, while the second bearing has been provided with the reference numeral 41.
  • the pressure control valve 20 downstream of the interior 17 of the high-pressure fuel pump 1 is arranged.
  • the pressure control valve 20 comprises a control piston 55, which is acted upon by a spring 56 in the closing direction and a leakage line 57th
  • the pressure control valve 20 downstream of the interior 17 prevails in the interior 17 almost the same pressure as on the pressure side of the feed pump 5.
  • the pressure on the pressure side of the prefeed pump 5 and thus of the interior 17 is about 3 to 6 bar.
  • first bearing 39 and the second bearing 41 are generally formed as sliding bearings, formed by the forced flow through the bearings 39 and 41 in the bearings 39 and / or 41, a hydrodynamic lubricating wedge. As a result, the load capacity of the first bearing 39 and the second bearing 41 increases considerably and at the same time the heat dissipation from the first bearing 39 and the second bearing 41 is improved.
  • the arrangement of the pressure regulating valve 20 in the connecting line 18 has in the normal operation of the fuel injection system, inter alia, the advantage that the delivery height of the prefeed pump can be reduced.
  • this also means that the normal operating pressure in the low-pressure region of the Kralftstoffeinspritzsystems is not sufficient to operate an HC injector. Namely, when the pressure with which the fuel is injected from the HC injector 16 into the exhaust gas aftertreatment device of the internal combustion engine is too low, the fuel is not sufficiently finely atomized, and thereby the complete combustion of the injected fuel is not ensured. With incomplete combustion, the emission values of the internal combustion engine deteriorate, which is undesirable.
  • the pressure in the low-pressure region of the fuel injection system can now be increased simultaneously with the injection of fuel through the HC injector 16. This can be done by increasing the supply voltage of the electrically driven feed pump 5 so that it runs at a higher speed and as a result the delivery pressure increases to the desired value.
  • a pressure control it is also possible to increase the operating pressure via a pressure control.
  • This requires on the delivery side of the prefeed pump 5, a pressure sensor 4, which is connected via signal lines, not shown, with a pressure regulator.
  • the pre-feed pump 5 is used as a setpoint to the pressure p in the low pressure range is about 3 - 5 bar set.
  • the target value is p to the pressure controller for a short time to a value of about 7 - increases bar 10th
  • the prefeed pump is driven Consequently, 5 of the pressure regulator so that the desired nominal pressure p is set to the low-pressure region.
  • the prefeed pump 5 can be operated above the nominal point for these short operating times, without being damaged or their life is drastically reduced.
  • the fuel injection system according to the invention can be realized without additional investment in a reinforced pump, which has an advantageous effect on its economy.
  • a flow-limiting element 42 is arranged in the connection of the flows of at least one of the bearings 39, 41 with the return line 13. It can also be provided that the processes of both bearings 39, 41 are first brought together and then connected together with the return line 13, in which case only one flow-limiting element 42 is required for both bearings 39, 41.
  • the flow-limiting element 42 may be formed, for example, as a throttle point. Alternatively, the flow-limiting element 42 may also be designed as a switchable throttle, for example in the form of an electrically or hydraulically actuated valve.
  • the flow-limiting element 42 may also be designed as a pressure-holding valve, which opens at a certain pressure and then causes a pressure increase according to the valve characteristic. Particularly advantageous in combination with the flow-limiting element 42 when the pressure control valve 20 has a progressive spring characteristic. In this way, the most constant possible pressure in the low pressure range in normal operation, ie without HC injection, can be achieved, while the highest possible pressure increase in the low pressure region is achieved with increase in flow in the low pressure range for HC injection.
  • the spring of the pressure regulating valve 20 is designed so that its spring stiffness increases with increasing opening stroke.
  • FIG. 2 is shown a further embodiment of a fuel injection system according to the invention.
  • the prefeed pump 5 is mechanically driven. It is often coupled directly to the drive shaft 35 of the high-pressure pump 1. Because of this rigid coupling of the pressure build-up at the start of the engine, in which the speeds are naturally very low, relatively slow vonstatten. To remedy this deficiency is upstream of the Pre-feed pump 5 an electrically driven switchable additional fuel pump 43 is provided. This additional fluid pump 43 is usually operated only during the start of the internal combustion engine, so that a faster pressure build-up in the fuel injection system is possible.
  • this additional fuel pump is operated simultaneously and hydraulically in series with the prefeed pump 5, even when the internal combustion engine is running, when fuel is to be injected through the HC injector 16. For then add the delivery levels of additional fuel pump 43 and feed pump 5 to a value that is sufficiently large to ensure the fine atomization of the fuel through the HC injector.
  • a suction throttle 45 is provided, which ensures that the flow rate of the prefeed pump 5 is limited, especially at high speeds
  • the mechanically driven prefeed pump 5 of the second exemplary embodiment can be designed as a vane cell pump, as an internal gear pump, in particular as a gerotor pump, or as an external gear pump. These pumps have a gap between the rotating components and the pump housing that causes leakage losses. This gap is in FIG. 2 represented by the symbol of a throttle (see reference numeral 49). The leaked through the gap leakage amount is discharged through a leakage line 51.
  • the leakage line 51 opens into the line (without reference numeral), which supplies the flowing through the first bearing 39 amount of fuel to the return line 13.
  • the HC injector 16 is supplied with fuel from the interior 17 of the high-pressure fuel pump 1 and is arranged downstream of the priming pump 5, so that it is acted upon by the delivery pressure of the prefeed pump 5.
  • Switching on the additional fuel pump 43 causes - depending on the speed of the high pressure pump 1 and the power of the additional fuel pump 43 - a pressure increase in the interior 17 and thus also at the HC injector sixteenth
  • FIG. 3 a fuel injection system is shown, in which a mechanically driven prefeed pump 5 is provided, wherein in the inlet to the prefeed pump 5, a switchable throttle 50 is arranged.
  • the switchable throttle 50 may be an electrically operated valve analogously to the embodiment according to FIG. 7 or hydraulically actuated. In the hydraulic control of the switchable throttle 50, the pressure drop resulting from the flow to the HC injector 16 can be utilized. Upstream of the mechanically driven feed pump 5 can analogously to the execution according to FIG. 2 an additional fuel pump 43 may be provided. If an increased pressure in the low-pressure region is required for the HC injection, then the switchable throttle 50 is set to a larger flow cross-section, so that the delivery rate of the prefeed pump 5 is increased, which in turn leads to pressure increase in the low pressure region.
  • FIG. 4 shows an embodiment of the hydraulic control of the switchable Diossel 50th

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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)
  • Exhaust Gas After Treatment (AREA)

Claims (13)

  1. Système d'injection de carburant d'un moteur à combustion interne comprenant une région basse pression et une région haute pression, une pompe de pré-alimentation (5) étant prévue dans la région basse pression, laquelle refoule du carburant depuis un réservoir de carburant (3) jusqu'à une pompe haute pression (1), et une pompe haute pression (1) étant prévue dans la région haute pression, laquelle présente un arbre d'entraînement monté à rotation dans un espace interne (17) et par le biais d'au moins un palier (39, 41) et refoule du carburant à haute pression vers une rampe commune (9) ou au moins vers une soupape d'injection, l'espace interne (17) de la pompe haute pression (1) faisant partie de la région basse pression et la région basse pression comprenant au moins un injecteur de HC (16) qui injecte au besoin du carburant depuis la région basse pression et en aval de la pompe de pré-alimentation (5) dans un dispositif de post-traitement des gaz d'échappement du moteur à combustion interne, caractérisé en ce que la pression dans la région basse pression pendant l'injection de carburant est augmentée par l'injecteur de HC dans le dispositif de post-traitement des gaz d'échappement par une augmentation de la quantité d'alimentation vers la région basse pression.
  2. Système d'injection de carburant selon la revendication 1, caractérisé en ce que la pompe de pré-alimentation (5) est réalisée sous forme de pompe à carburant entraînée électriquement.
  3. Système d'injection de carburant selon la revendication 1, caractérisé en ce que la pompe de pré-alimentation (5) est réalisée sous forme de pompe à carburant entraînée mécaniquement, notamment sous forme de pompe à carburant entraînée directement par la pompe haute pression de carburant (1).
  4. Système d'injection de carburant selon la revendication 3, caractérisé en ce qu'un étranglement commutable (50) est prévu en amont avant la pompe de pré-alimentation (5).
  5. Système d'injection de carburant selon la revendication 3, caractérisé en ce qu'en plus de la pompe de pré-alimentation (5) entraînée mécaniquement, encore une autre pompe à carburant supplémentaire (43) pouvant être incorporée dans le circuit et entraînée électriquement est prévue.
  6. Système d'injection de carburant selon l'une quelconque des revendications précédentes, caractérisé en ce que l'au moins un injecteur de HC (16) est raccordé à une conduite d'alimentation en carburant (15) ou à un espace interne (17) de la pompe haute pression de carburant (1).
  7. Système d'injection de carburant selon l'une quelconque des revendications 1 à 6, caractérisé en ce que l'au moins un injecteur de HC (16) est raccordé à la conduite de retour (13).
  8. Système d'injection de carburant selon la revendication 4, caractérisé en ce que l'étranglement commutable (50) est commuté électriquement ou hydrauliquement.
  9. Système d'injection de carburant selon l'une quelconque des revendications précédentes, caractérisé en ce que dans une liaison de l'au moins un palier (39, 41) à la conduite de retour (13) est prévu un élément de limitation du débit (42).
  10. Procédé pour faire fonctionner un système d'injection de carburant comprenant une région basse pression et une région haute pression, une pompe de pré-alimentation (5) étant prévue dans la région basse pression, laquelle refoule du carburant depuis un réservoir de carburant (3) jusqu'à une pompe haute pression (1), et une pompe haute pression (1) étant prévue dans la région haute pression, laquelle refoule du carburant à haute pression dans une rampe commune (9) ou au moins vers une soupape d'injection, au moins un injecteur de HC (16) étant raccordé à la région basse pression, et l'au moins un injecteur de HC (16) injectant au besoin du carburant en amont d'un ou de plusieurs filtres à particules dans un tuyau d'échappement du moteur à combustion interne, caractérisé en ce que pendant l'injection de carburant à travers l'injecteur de HC (16) dans le tuyau d'échappement, la pression dans la région basse pression est augmentée par une augmentation de la quantité d'alimentation vers la région basse pression.
  11. Procédé selon la revendication 10, caractérisé en ce que la pompe de pré-alimentation (5) est entraînée électriquement, et en ce que l'augmentation de pression dans la région basse pression est réalisée par une augmentation de la tension de commande de la pompe de pré-alimentation (5).
  12. Procédé selon l'une quelconque des revendications 10 à 11, caractérisé en ce que la pompe de pré-alimentation (5) est commandée par un régulateur de pression et en ce que l'augmentation de pression dans la région basse pression est réalisée par une augmentation de la valeur de consigne (psoll) de la pression.
  13. Procédé selon l'une quelconque des revendications 10 à 11, caractérisé en ce qu'en plus de la pompe de pré-alimentation (5), il est prévu une pompe à carburant supplémentaire (43) entraînée électriquement et disposée en amont de la pompe de pré-alimentation (5), et en ce que l'augmentation de pression dans la région basse pression est réalisée par enclenchement de la pompe à carburant supplémentaire (43) en plus de la pompe de pré-alimentation (5).
EP08855268A 2007-11-29 2008-11-12 Système d'injection de carburant pour un moteur à combustion interne à injecteur de hc Active EP2217795B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102007057438 2007-11-29
DE102008043643A DE102008043643A1 (de) 2007-11-29 2008-11-11 Kraftstoffeinspritzsystem für eine Brennkraftmaschine mit HC-Injektor
PCT/EP2008/065373 WO2009068438A2 (fr) 2007-11-29 2008-11-12 Système d'injection de carburant pour un moteur à combustion interne à injecteur de hc

Publications (2)

Publication Number Publication Date
EP2217795A2 EP2217795A2 (fr) 2010-08-18
EP2217795B1 true EP2217795B1 (fr) 2012-09-26

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EP08855268A Active EP2217795B1 (fr) 2007-11-29 2008-11-12 Système d'injection de carburant pour un moteur à combustion interne à injecteur de hc

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EP (1) EP2217795B1 (fr)
JP (1) JP5328802B2 (fr)
KR (1) KR101602970B1 (fr)
CN (1) CN101878352B (fr)
DE (1) DE102008043643A1 (fr)
WO (1) WO2009068438A2 (fr)

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DE102016119167B4 (de) 2015-12-16 2022-08-25 Denso Corporation Abgasreinigungssystem

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DE102009047488A1 (de) 2009-12-04 2011-06-09 Robert Bosch Gmbh Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine
DE102010003517A1 (de) 2010-03-31 2011-10-06 Robert Bosch Gmbh Kraftstofffördereinrichtung für eine Kraftstoffeinspritzeinrichtung einer Brennkraftmaschine
DE102010030389A1 (de) 2010-06-23 2011-12-29 Robert Bosch Gmbh Kraftstoffhochdruckpumpe mit angebauter Vakuumpumpe
DE102013224414A1 (de) 2013-11-28 2015-05-28 Robert Bosch Gmbh Verfahren zum Betreiben eines Fluidfördersystems
CN106246424B (zh) * 2016-08-29 2019-07-30 潍柴动力股份有限公司 高压油泵、发动机燃油系统及发动机
CN107917027B (zh) * 2016-10-10 2021-08-31 罗伯特·博世有限公司 燃油供应系统和发动机系统
CN108119274B (zh) * 2016-11-29 2023-08-01 罗伯特·博世有限公司 燃料喷射系统中的燃料供给泵
CN109386415B (zh) * 2017-06-16 2022-06-03 罗伯特·博世有限公司 燃料喷射系统
DE102017217891A1 (de) * 2017-10-09 2019-04-11 Robert Bosch Gmbh Fördermodul zur Förderung eines Fluids
CN110939538B (zh) * 2018-09-21 2024-04-02 罗伯特·博世有限公司 燃料喷射系统中的燃料过滤器

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DE102016119167B4 (de) 2015-12-16 2022-08-25 Denso Corporation Abgasreinigungssystem
DE102016119167B9 (de) 2015-12-16 2022-10-27 Denso Corporation Abgasreinigungssystem

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JP2011504979A (ja) 2011-02-17
EP2217795A2 (fr) 2010-08-18
JP5328802B2 (ja) 2013-10-30
KR101602970B1 (ko) 2016-03-11
CN101878352B (zh) 2013-06-19
WO2009068438A2 (fr) 2009-06-04
WO2009068438A3 (fr) 2009-08-06
CN101878352A (zh) 2010-11-03
DE102008043643A1 (de) 2009-06-04
KR20100087734A (ko) 2010-08-05

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