EP1989410A1 - Systeme d'injection dote d'un dispositif de dosage de carburant dans un systeme de gaz d'echappement d'un moteur a combustion interne et procede correspondant - Google Patents

Systeme d'injection dote d'un dispositif de dosage de carburant dans un systeme de gaz d'echappement d'un moteur a combustion interne et procede correspondant

Info

Publication number
EP1989410A1
EP1989410A1 EP07703343A EP07703343A EP1989410A1 EP 1989410 A1 EP1989410 A1 EP 1989410A1 EP 07703343 A EP07703343 A EP 07703343A EP 07703343 A EP07703343 A EP 07703343A EP 1989410 A1 EP1989410 A1 EP 1989410A1
Authority
EP
European Patent Office
Prior art keywords
fuel
valve
pressure
metering
injection system
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP07703343A
Other languages
German (de)
English (en)
Other versions
EP1989410B1 (fr
Inventor
Michael Hoffmann
Helmut Pichler
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.)
Mercedes Benz Group AG
Original Assignee
Daimler 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
Application filed by Daimler AG filed Critical Daimler AG
Publication of EP1989410A1 publication Critical patent/EP1989410A1/fr
Application granted granted Critical
Publication of EP1989410B1 publication Critical patent/EP1989410B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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
    • 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
    • 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
    • F01N2610/1446—Means for damping of pressure fluctuations in the delivery system, e.g. by puffer volumes or throttling

Definitions

  • Injection system with a device for metering fuel into an exhaust system of an internal combustion engine and a method for this purpose
  • the invention relates to an injection system with a device for metering fuel into an exhaust system of an internal combustion engine according to the preamble of claim 1 and a method for metering fuel into an exhaust system of an internal combustion engine according to the preamble of claim 8.
  • soot particles contained in the exhaust of diesel engines in particulate filters.
  • the soot collected in the particulate filter is oxidized by means of oxygen.
  • the temperature required for the oxidation of the particulate filter can be achieved with the help of an upstream of the particulate filter oxidation catalyst.
  • metered amount of fuel is injected into the exhaust gas of the internal combustion engine so as to produce the required increase in temperature by means of a chemical reaction of the fuel in the oxidation catalyst.
  • the generic document DE 102 51 686 Al shows an injection system with a device for dosing of fuel in an exhaust system of an internal combustion engine.
  • the injection system is in the form of a
  • the accumulator injection system has a fuel pump that delivers fuel from a fuel tank into a reservoir and holds it under high pressure. Injectors are connected to the accumulator, which in each case emit fuel from the accumulator into a combustion chamber of the internal combustion engine.
  • the injection system has an injection valve, which is assigned to the exhaust system of the internal combustion engine and can spray off fuel into the exhaust system. In the injection valve, an injection nozzle and an injector controlling the actuator are combined, wherein the actuator is controlled by a control unit.
  • the fuel pump supplies fuel to the fuel injector from the fuel tank. Between the fuel pump and the injection valve, a shut-off valve is arranged, which can interrupt the fuel flow to the injection nozzle in an emergency. Furthermore, a fuel pressure sensor is provided which can measure the pressure of the fuel in front of the injection valve.
  • the regeneration of the particulate filter takes place at low exhaust and Oxidationskatalysator- or
  • Particle filter temperatures by means of the injectors which additionally spray fuel into the combustion chambers of the internal combustion engine.
  • At high exhaust and Oxidationskatalysator- or particle filter temperatures is a spraying of fuel by means of the injection valve in the exhaust system of the internal combustion engine. This is to ensure that the injected fuel for the regeneration of the particulate filter in all load and speed ranges of the internal combustion engine can go into a vapor state before the fuel encounters the oxidation catalyst or during the fuel meets the oxidation catalyst.
  • the disadvantage here is that the spraying of fuel by means of the injectors adversely affects the thermodynamic efficiency of the internal combustion engine and the device for metering fuel into the exhaust system of the internal combustion engine is not suitable at low exhaust and Oxidationskatalysator- or particle filter temperatures effective regeneration of the particulate filter ensure.
  • the object of the invention is in contrast to provide an injection system with a device for metering fuel of the type mentioned, in which the spraying of fuel into the exhaust system can be done so that the particulate filter in all load and speed ranges of the engine a high efficiency can be regenerated, which can be dispensed with an additional injection of fuel into the combustion chambers.
  • the device according to the invention is characterized by a pressure regulating valve, which is arranged between the shut-off valve and the metering valve and is connected via a drain to the injection system.
  • the injection system has a high-pressure pump which delivers fuel to a reservoir and maintains it under high pressure.
  • An injection nozzle is connected to the injection system via an inlet. In the inlet a shut-off valve and a metering valve are provided.
  • the injection nozzle is assigned to an exhaust system of the internal combustion engine.
  • the check valve releases the fuel from the injection system for injection through the injector and the metering valve meters the released fuel to the injector.
  • the injector injects the metered fuel into the exhaust system to regenerate a particulate filter in the exhaust system downstream of the injector.
  • a pressure regulating valve is arranged between the shut-off valve and the metering valve.
  • the pressure regulating valve levels the pressure of the fuel between the shut-off valve and the metering valve to a certain value by shutting off a portion of the fuel between the shut-off valve and the metering valve via the drain.
  • the discarded fuel is returned to the injection system.
  • the pressure of the fuel upstream of the metering valve can be controlled within narrow limits, so that minute quantities of fuel can be discharged from the injector with high accuracy, which can evaporate even at low exhaust gas temperatures before the fuel strikes the oxidation catalyst.
  • the shut-off valve is preceded by a throttle.
  • the fuel from the injection system flows through the throttle to the shut-off valve and with the shut-off valve open to the dosing valve and the pressure control valve.
  • pressure fluctuations in the fuel from the injection system are smoothed by the throttle, whereby the accuracy of the control of the pressure of the fuel before the metering valve can be further improved.
  • the throttle, the shut-off valve, the metering valve and the pressure control valve are zusaramengeroxt in a metering unit.
  • the dosing unit is connected to the injection system via the inlet and via the drain. The fuel flows via the inlet into the dosing unit.
  • the fuel flows through the throttle into the shut-off valve, after the shut-off valve to the dosing valve and to the pressure regulating valve, after the dosing valve to the injection nozzle and after the pressure regulating valve into the drain.
  • the throttle, the shut-off valve, the metering valve and the pressure control valve are combined to save space in a single component.
  • the shut-off valve, the metering valve and the pressure regulating valve are connected to one another via a damping volume.
  • a damping volume pressure waves in the fuel from the injection system elemeniert, whereby the accuracy of the control of the pressure of the fuel before the metering valve can be further improved.
  • the injection nozzle is connected via an injection line with the metering unit.
  • the metering unit is connected via the inlet to the injection system and the injection nozzle is connected via the injection line with the metering unit.
  • the dosing unit and the injection nozzle can be provided spatially separated from one another on the internal combustion engine or exhaust system, so that only the injection nozzle and the injection line can be fitted in the hot region of the exhaust system.
  • the injector opens automatically by the pressure of the fuel in the injection line and injects fuel into the exhaust system.
  • the pressure set by the metering unit of the fuel exceeds the opening pressure of the preferably spring-loaded injection nozzle, so that the injector opens automatically and the released fuel is injected into the exhaust system of the internal combustion engine.
  • the pressure of the fuel is controlled by the pressure regulating valve within narrow limits, whereby the amount of fuel sprayed depends substantially on the opening duration of the metering valve, so that the amount of fuel sprayed off can be precisely controlled.
  • the dosing unit is connected via the inlet to a low-pressure circuit of the injection system.
  • the injection system has a low pressure circuit and a low pressure circuit fueled by the high pressure circuit.
  • the high-pressure circuit provides the injectors with high-pressure fuel for spraying into the combustion chambers of the internal combustion engine.
  • a fuel pressure provided by the low-pressure pump is sufficient for mixing and vaporizing the sprayed fuel by means of the device according to the invention for metering fuel into the exhaust system.
  • no fuel from the high pressure circuit is needed for the regeneration of the particulate filter.
  • the metering unit via the drain with a return of the Injection system connected.
  • the diverted fuel from the dosing unit is returned to the injection system.
  • the inventive method is characterized by the shut-off valve, is released by the fuel for one or more Abspritzungen through the injector and metered by the metering the released fuel for one or more Abspritzungen the injector and by means of the pressure control valve, the pressure of the released fuel between the shut-off valve and the metering valve is controlled.
  • the check valve releases the fuel from the injection system for one or more injections through the injector.
  • the metering valve meters the fuel released by the shut-off valve so that the automatically opening injection nozzle makes one or more sprayings into the exhaust system of the internal combustion engine.
  • the pressure regulating valve controls the pressure of the released fuel between the shut-off valve and the metering valve, so that the pressure of the fuel before the metering valve is leveled to a certain value.
  • fuel is taken from the injection system exclusively when spraying fuel into the exhaust system.
  • a part of the fuel between the shut-off valve and the metering valve is shut down by means of the pressure control valve.
  • the pressure of the fuel between the shut-off valve and the metering valve is leveled by means of the pressure regulating valve to a pressure which is below the lowest delivery pressure of the low-pressure pump.
  • a constant pressure level for the spraying of fuel into the exhaust system is ensured in all load and speed ranges of the internal combustion engine.
  • Fig. 1 is a schematically simplified illustration of an embodiment of an injection system according to the invention with a device for metering fuel into an exhaust system of an internal combustion engine and
  • Fig. 2 is a schematically simplified illustration of the device for metering the fuel.
  • FIG. 1 shows a schematically simplified illustration of the exemplary embodiment according to the invention of an injection system 1 with a device for metering fuel 2 into an exhaust system 3 of an internal combustion engine.
  • the injection system 1 is designed as a storage injection system (common rail) for internal combustion engines, in particular diesel internal combustion engines.
  • the injection system 1 supplies the device for metering fuel 2 in the Exhaust system 3 of the internal combustion engine not shown with fuel.
  • an exhaust gas purification system with an oxidation catalyst 4 and a downstream arranged particulate filter 5 is provided in the exhaust gas system 3.
  • the fuel metering device 2 discharges fuel into the exhaust system 3 upstream of the oxidation catalyst 4.
  • the fuel mixes with the exhaust gas and passes with the exhaust gas to the oxidation catalyst 4.
  • the oxidation catalyst 4 the fuel is converted into heat by means of a chemical reaction.
  • the particulate filter 5 is regenerated by oxidizing the soot collected in the particulate filter 5 with the aid of oxygen.
  • the exhaust gas or particle filter temperature required for this purpose is generated in the oxidation catalytic converter 4.
  • the injection system 1 comprises a low pressure circuit 6, a high pressure circuit 7 and a return 8.
  • the low pressure circuit 6 supplies the high pressure circuit 7 with fuel.
  • the return 8 of the vented for venting pressure rules and for controlling the injection system 1 flows fuel.
  • the low-pressure circuit 6 has a low-pressure pump 9, which draws fuel from a fuel tank 14 via a shut-off valve 10, a radiator 11, a check valve 12 and a prefilter 13.
  • the fuel from the fuel tank 14 first flows through the radiator 11, which is associated with a non-illustrated control unit of the internal combustion engine to its cooling. Thereafter, the fuel in the pre-filter 13 is cleaned of coarse contaminants until the low-pressure pump 9 conveys the sucked fuel into a filter unit 15. In the filter unit 15, the fuel is finely cleaned and Water contained in the fuel at least partially separated from the fuel.
  • the check valve 9 is provided in a separation point of the low pressure circuit 6 to the fuel tank 13 and prevent idling of the low pressure circuit 6 after disconnecting the low pressure circuit 6 from the fuel tank 14.
  • the check valve 11 prevents idling of the low pressure circuit 6 after a shutdown of the injection system. 1
  • a high-pressure pump 16 delivers the fuel from the low-pressure circuit 6 to the accumulator 17 and keeps the fuel under high pressure in the accumulator 17.
  • the high pressure pump 16 is preferably designed as a controllable series punch pump.
  • a pressure sensor 18 is used to determine the pressure of the fuel in the memory 17.
  • the pressure sensor 18 is connected to the control unit.
  • the maximum achievable pressure of the fuel in the memory 17 is determined by means of a pressure valve 19. When a predetermined pressure of the fuel in the reservoir 17 is exceeded, the pressure valve 19 opens and excess fuel from the reservoir 17 flows into the return flow 8.
  • the memory 17 is connected via injection lines 20 with injectors 21.
  • the injectors 21 are each assigned to a combustion chamber of the internal combustion engine and spray the fuel from the reservoir 17 directly into the combustion chambers.
  • the injectors 21 are controlled by the controller.
  • the injectors 21 are each equipped with a known hydraulic pressure booster, which allows the pressure of the fuel during injection through the injectors 21 against the pressure of the fuel in High pressure circuit 7, in particular the memory 17 and the injection lines 20, further increase.
  • a Kraftstoffsammeivolumen 22 is arranged to flow into the diverted fuel from the low pressure circuit 6 and the high pressure circuit 7.
  • the filter unit 15 Connected to the fuel collecting volume 22 is the filter unit 15, from which at least part of the fuel delivered by the low-pressure pump 9 into the filter unit 15 flows to vent the filter unit 15.
  • the high-pressure pump 16 is connected to the fuel collecting volume 22 via a pressure valve 23 integrated in the high-pressure pump 16.
  • the pressure valve 23 controls upon reaching a certain pressure of the fuel in the high pressure pump 16 fuel.
  • the injectors 21 are connected via a check valve 24 to the fuel collection chamber 22. Via the check valve 24, the fuel which has been diverted to control the injectors 21 flows into the fuel collecting volume 22.
  • the fuel diverted from the pressure valve 19 flows from the reservoir 17 via a throttle 25 into the fuel chamber
  • the throttle 25 is used in a faulty open position of the pressure valve 19 to build up a dynamic pressure, so that at least a portion of the incorrectly discharged fuel from the memory 17, flow in the flow direction in front of the throttle 25, via a check valve 26 back into the high-pressure pump 16 can, whereby the lubrication of the high-pressure pump 16 is ensured.
  • the amount of fuel diverted from the injectors 21 to control the hydraulic pressure ratio flows through a throttle 27, a fuel cooler 28 and a check valve 29 between the low pressure pump 9 and the Filter unit 15 in the low pressure circuit 6.
  • the discarded fuel from the injectors 21 is preferably cooled by means of a not shown coolant circuit of the internal combustion engine.
  • the fuel from the fuel collection volume 22 flows back into the fuel tank 14 via a check valve 30.
  • the shut-off valve 30 is provided at a separation point of the return line 8 to the fuel tank 14 and prevents when disconnecting the return line 8 from the fuel tank 14, an idling of the low-pressure circuit 6. Via a check valve 31 and a throttle 32, the low-pressure pump sucks 9 fuel from the fuel tank 14.
  • the device for metering fuel 2 into the exhaust system 3 of the internal combustion engine is supplied with fuel from the injection system 1.
  • a metering unit 33 is connected via an inlet 34 to the low pressure circuit 6.
  • the fuel flows via an injection line 35 to the injection nozzle 36.
  • the injection nozzle 36 is assigned to the exhaust system 3 and injects fuel into the exhaust system 3.
  • Deposited fuel from the metering unit 33 flows via an outlet 37 together with the diverted fuel from the high-pressure pump 16 into the fuel collecting chamber 22 of the return line 8.
  • FIG. 2 shows a schematically simplified illustration of the device for metering fuel 2.
  • a throttle 38, a shut-off valve 39, a metering valve 40 and a pressure control valve 41 are combined to save space in a single component.
  • the shut-off valve 39 and the metering valve 40 are preferably designed as solenoid valves and are provided by the control unit controlled.
  • the pressure control valve 41 is designed as a spring-loaded throttle valve with a preferably flat pressure control characteristic.
  • the check valve 39, the metering valve 40 and the pressure control valve 41 are connected to each other via a damping volume 42.
  • the fuel from the low-pressure circuit 6 flows through the inlet 34 through the throttle 38 to the shut-off valve 39.
  • the fuel flows through the damping volume 42 to the metering valve 40 and the pressure control valve 41.
  • the fuel flows over the Injection line 35 to the injection nozzle 36.
  • the injection nozzle 36 is received in a holding device 43 of an exhaust pipe 44 of the exhaust system 3.
  • the preferably spring-loaded injection nozzle 36 opens automatically and injects fuel into the exhaust system 3 from.
  • the pressure control valve 41 controls the pressure of the fuel in the dosing unit 33 by the pressure control valve 41 abgnat a portion of the fuel from the damping volume 42.
  • the diverted fuel flows into the return passage 8 via the drain 37.
  • the throttle 38 and the damping volume 42 contributes.
  • Throttle 38 can be smoothed pressure fluctuations of the fuel for the metering unit 33, which arise in the low pressure circuit 6 when supplying the high pressure pump 16 through the low pressure pump 9.
  • the damping volume 42 tuned to the throttle 38, pressure waves in the dosing unit 33, which arise from the pressure fluctuations remaining in the fuel, can be damped or eliminated.
  • the spraying of the fuel required for the regeneration of the particulate filter 5 can take place by means of a single spray or can be split into several sprayings in a clocked manner.
  • the metering valve 40 allows one or more sprayings through the injection nozzle 36 by the metering valve 40 once or more times in succession metered the fuel of the injection nozzle 36 by opening and closing.
  • the shut-off valve 39 releases the fuel required for the regeneration of the particle filter 5 for one or more sprayings.
  • the pressure control valve 41 controls the fuel pressure in the damping volume 42, between the shut-off valve 39 and the metering valve 40.
  • the injection system 1, in particular the low-pressure circuit 6, only phased out fuel for the regeneration of the particulate filter 5.
  • the pressure of the fuel in the metering unit 33 is essentially determined by the pressure of the fuel in the low-pressure circuit 6.
  • the pressure regulating valve 41 levels the pressure of the fuel in the damping volume 42 to a pressure which is below the lowest delivery pressure of the low-pressure pump 9. This ensures that in each load state of the internal combustion engine, a sufficient amount of fuel for the regeneration of the particulate filter 5 is available.
  • the throttle 38 by means of the throttle 38, the amount of fuel flowing into the metering unit 33 so that the amount of fuel to be controlled by the pressure control valve 41 is narrower than the minimum and maximum amounts of fuel provided by the low pressure pump 9, whereby the accuracy of pressure control can be further increased.
  • the device according to the invention for metering fuel 2 for the dimensioning of the injection system 1, in particular the low-pressure circuit 6, plays a minor role, so that costs and space can be saved.

Abstract

L'invention concerne un système d'injection doté d'un dispositif de dosage de carburant dans le système de gaz d'échappement d'un moteur à combustion interne ainsi qu'un procédé correspondant. Un système d'injection (1) doté d'une pompe à haute pression (16) qui transporte le carburant dans un accumulateur (17) et l'y maintient sous haute pression, d'injecteurs (21) qui sont reliés à l'accumulateur (17) et qui injectent du carburant provenant de l'accumulateur (17) dans chaque chambre de combustion du moteur à combustion interne et d'un gicleur d'injection (36) associé au système (3) de gaz d'échappement et relié par une amenée (34) au système d'injection (1). Une soupape de blocage (39) et une soupape de dosage (40) sont prévues dans l'amenée (34) et entre la soupape de blocage (39) et la soupape de dosage (40) est disposée une soupape (41) de régulation de pression. La soupape (41) de régulation de pression est reliée par une sortie (37) au système d'injection (1). Le système d'injection selon l'invention est prévu pour les moteurs à combustion interne diesel.
EP07703343A 2006-02-28 2007-02-08 Systeme d'injection dote d'un dispositif de dosage de carburant dans un systeme de gaz d'echappement d'un moteur a combustion interne et procede correspondant Expired - Fee Related EP1989410B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006009099A DE102006009099A1 (de) 2006-02-28 2006-02-28 Einspritzsystem mit einer Vorrichtung zum Dosieren von Kraftstoff in ein Abgassystem einer Brennkraftmaschine und einem Verfahren hierzu
PCT/EP2007/001064 WO2007098845A1 (fr) 2006-02-28 2007-02-08 Systeme d'injection dote d'un dispositif de dosage de carburant dans un système de gaz d'échappement d'un moteur à combustion interne et procede CORRESPONDANT

Publications (2)

Publication Number Publication Date
EP1989410A1 true EP1989410A1 (fr) 2008-11-12
EP1989410B1 EP1989410B1 (fr) 2009-09-23

Family

ID=37897356

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07703343A Expired - Fee Related EP1989410B1 (fr) 2006-02-28 2007-02-08 Systeme d'injection dote d'un dispositif de dosage de carburant dans un systeme de gaz d'echappement d'un moteur a combustion interne et procede correspondant

Country Status (6)

Country Link
US (1) US7942131B2 (fr)
EP (1) EP1989410B1 (fr)
JP (1) JP4898842B2 (fr)
CN (1) CN101389835B (fr)
DE (2) DE102006009099A1 (fr)
WO (1) WO2007098845A1 (fr)

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WO2007098845A1 (fr) 2007-09-07
US20090050109A1 (en) 2009-02-26
CN101389835A (zh) 2009-03-18
JP4898842B2 (ja) 2012-03-21
DE102006009099A1 (de) 2007-08-30
JP2009528472A (ja) 2009-08-06
CN101389835B (zh) 2011-02-16
US7942131B2 (en) 2011-05-17
EP1989410B1 (fr) 2009-09-23

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