WO2016146229A1 - Système pour moteur à combustion interne, moteur à combustion interne et procédé pour faire fonctionner un système pour moteur à combustion interne - Google Patents

Système pour moteur à combustion interne, moteur à combustion interne et procédé pour faire fonctionner un système pour moteur à combustion interne Download PDF

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Publication number
WO2016146229A1
WO2016146229A1 PCT/EP2016/000198 EP2016000198W WO2016146229A1 WO 2016146229 A1 WO2016146229 A1 WO 2016146229A1 EP 2016000198 W EP2016000198 W EP 2016000198W WO 2016146229 A1 WO2016146229 A1 WO 2016146229A1
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WO
WIPO (PCT)
Prior art keywords
combustion engine
internal combustion
unit
exhaust gas
turbocharger
Prior art date
Application number
PCT/EP2016/000198
Other languages
German (de)
English (en)
Inventor
Claus-Oliver Schmalzing
Original Assignee
Mtu Friedrichshafen Gmbh
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Filing date
Publication date
Application filed by Mtu Friedrichshafen Gmbh filed Critical Mtu Friedrichshafen Gmbh
Publication of WO2016146229A1 publication Critical patent/WO2016146229A1/fr

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/02—EGR systems specially adapted for supercharged engines
    • F02M26/04—EGR systems specially adapted for supercharged engines with a single turbocharger
    • F02M26/05—High pressure loops, i.e. wherein recirculated exhaust gas is taken out from the exhaust system upstream of the turbine and reintroduced into the intake system downstream of the compressor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • B60K6/42—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs characterised by the architecture of the hybrid electric vehicle
    • B60K6/48—Parallel type
    • B60K6/485—Motor-assist type
    • 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
    • F01N5/00—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy
    • F01N5/04—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy the devices using kinetic energy
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B37/00—Engines characterised by provision of pumps driven at least for part of the time by exhaust
    • F02B37/12—Control of the pumps
    • F02B37/24—Control of the pumps by using pumps or turbines with adjustable guide vanes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
    • F02B39/02—Drives of pumps; Varying pump drive gear ratio
    • F02B39/08—Non-mechanical drives, e.g. fluid drives having variable gear ratio
    • F02B39/10—Non-mechanical drives, e.g. fluid drives having variable gear ratio electric
    • 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
    • F02D41/0002—Controlling intake air
    • F02D41/0007—Controlling intake air for control of turbo-charged or super-charged engines
    • 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
    • F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D41/0047—Controlling exhaust gas recirculation [EGR]
    • F02D41/005—Controlling exhaust gas recirculation [EGR] according to engine operating conditions
    • F02D41/0052—Feedback control of engine parameters, e.g. for control of air/fuel ratio or intake air amount
    • 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
    • F02D41/0025—Controlling engines characterised by use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D41/0047—Controlling exhaust gas recirculation [EGR]
    • F02D41/0065—Specific aspects of external EGR control
    • F02D41/0072—Estimating, calculating or determining the EGR rate, amount or flow
    • 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
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/02—EGR systems specially adapted for supercharged engines
    • F02M26/09—Constructional details, e.g. structural combinations of EGR systems and supercharger systems; Arrangement of the EGR and supercharger systems with respect to the engine
    • F02M26/10—Constructional details, e.g. structural combinations of EGR systems and supercharger systems; Arrangement of the EGR and supercharger systems with respect to the engine having means to increase the pressure difference between the exhaust and intake system, e.g. venturis, variable geometry turbines, check valves using pressure pulsations or throttles in the air intake or exhaust system
    • 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
    • F02D41/14—Introducing closed-loop corrections
    • F02D41/1438—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor
    • F02D41/1444—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases
    • F02D41/1448—Introducing closed-loop corrections using means for determining characteristics of the combustion gases; Sensors therefor characterised by the characteristics of the combustion gases the characteristics being an exhaust gas pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N11/00—Starting of engines by means of electric motors
    • F02N11/04—Starting of engines by means of electric motors the motors being associated with current generators
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/40—Engine management systems
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/62—Hybrid vehicles

Definitions

  • the invention relates to a Brennla-aftmaschinenvortechnische, an internal combustion engine and a method for operating a Brennla-aftmaschinenvortechnische.
  • the invention relates to an internal combustion engine device with an exhaust gas recirculation, with an adjustable turbocharger and with a control and / or regulating unit, the
  • the control and / or regulating unit is provided to adjust a requirement characteristic of the exhaust gas recirculation by adjusting the turbocharger.
  • a purging gradient for the exhaust gas recirculation can be set particularly well.
  • an EGR mass flow driven by the scavenging gradient can be set well via the scavenging gradient, with the result that an EGR rate can also be set well.
  • exhaust gas values can be set particularly well, which means that even strict limit values for the exhaust gas values can be complied with particularly well.
  • exhaust gas recirculation is in particular a Unit for the recirculation of exhaust gas from an exhaust system understood in an intake.
  • a “rinsing trap” is understood in particular to mean a pressure difference between a boost pressure and an exhaust backpressure, a “boost pressure” being understood below to mean a boost pressure relevant to the rinsing trap at an intersection at which the exhaust gas recirculation flows into the intake tract, and Exhaust back pressure "one for the
  • EGR mass flow is in particular a mass flow of the exhaust gas recirculation from the exhaust system
  • EGR rate is understood in particular to mean a value which is calculated from the mass flow of EGR divided by a mass flow of combustion air.
  • Combustion air mass flow is understood in particular to mean a sum of a fresh air mass flow and the EGR mass flow .
  • an “adjustable turbocharger” is understood to mean, in particular, a turbocharger which is provided for a change in charge pressure and / or exhaust gas backpressure as a function of a control characteristic.
  • Charge pressure is understood to mean, in particular, a pressure of a combustion air, the combustion air from the turbocharger compressed fresh air and recirculated exhaust gas recirculation exhaust gas.
  • exhaust backpressure is understood in particular to mean a pressure of an exhaust gas before a relaxation in the turbocharger.
  • Adjustment by the control and / or regulating unit in this context means, in particular, that the control and / or regulating unit has at least one Adjustment provided tax code provides. For example, under an adjustment of the turbocharger is understood that the control and / or regulating unit a
  • the control and / or regulating unit can have a control function which is provided to evaluate a control parameter in order to determine the control characteristic
  • Control unit is in particular a unit with a processor unit and with a memory unit and with a memory unit stored in the memory unit
  • control and / or regulating unit can have a plurality of interconnected control units, which are preferably provided via a bus system, in particular a CAN bus system to communicate with each other.
  • a "requirement parameter” is to be understood as meaning, in particular, a characteristic variable which is set to a required value by adjusting the turbocharger.
  • “Provided” is understood to mean in particular specially programmed, designed and / or equipped.
  • the exhaust gas recirculation is provided for guiding an EGR mass flow, of which the requirement characteristic is at least mutually dependent. Since the EGR mass flow has a high influence on the exhaust gas values, compliance with strict limit values can be achieved particularly well by such a dependency. Under one
  • Specific parameter of the exhaust gas recirculation is understood in particular to mean a parameter which is related to the exhaust gas recirculation, such as, in particular, the EGR rate, the EGR mass flow or the scavenging gradient
  • the request characteristic depends on the EGR mass flow or the EGR mass flow depends on the request characteristic.
  • "at least” is understood in particular to mean that the requirement parameter can also be embodied as the EGR rate.
  • control and / or regulating unit is provided to set at least one exhaust gas value to a desired value by setting the requirement characteristic. This can ensure that the limit values for the exhaust gas values are not exceeded, at least in normal operation. If a sensor for detecting the at least one exhaust gas value is provided, can be for the control and / or
  • Control unit an input characteristic are provided, based on which the control and / or regulating unit determines the value for the request characteristic.
  • the turbocharger has an adjustable turbine unit.
  • the exhaust back pressure can be changed, bringing the
  • An “adjustable turbine unit” is understood to mean, in particular, a turbine unit that is used to change the exhaust gas back pressure at a constant pressure
  • the adjustable turbine unit may have a variable turbine geometry.
  • the turbocharger is provided for adjusting the turbine unit one of the turbine unit provided power and / or a retrieved from the turbine unit power, whereby in particular a speed of the turbine unit can be changed.
  • the exhaust back pressure can be changed, in particular increased.
  • control and / or regulating unit is provided to adjust the request characteristic of the exhaust gas recirculation by adjusting the turbine unit.
  • the requirement parameter By adjusting the requirement parameter by adjusting the turbine unit, in particular the exhaust back pressure changes. This changes with the adjustment of the turbine unit, the scavenging gradient and thus the EGR mass flow. The requirement parameter can thus be easily adjusted.
  • the turbine unit has a turbine wheel and a generator coupled to the turbine wheel.
  • a power which is additionally provided by the turbine unit, when the exhaust back pressure is increased, can be used, for example, to charge an energy storage.
  • a flow resistance of the turbine unit can be increased, such as a coupled to the turbine wheel brake.
  • the turbocharger preferably has a compressor unit that can be mechanically decoupled at least partially from the turbine unit. By means of a mechanical decoupling, the compressor unit and the turbine unit can be operated and / or adjusted at least partially independently of one another. In particular, it is easily possible by means of
  • Adjust compressor unit adapted to current operating conditions boost pressure and at least partially independent of the exhaust gas back pressure and thus to change the purging gradient to adjust the request characteristic of the exhaust gas recirculation.
  • Compressor unit of the turbine unit partially mechanically decoupled, completely mechanically decoupled, partially mechanically decoupled or completely mechanically decoupled.
  • mechanically decoupled is in particular understood that the
  • Exhaust gas turbocharger having a unit which is provided to provide a separable or at least variable mechanical coupling between the turbine unit and the compressor unit, such as a clutch.
  • mechanically decoupled is meant, in particular, that a mechanical connection, such as a common shaft of the turbine unit and the compressor unit, is omitted.
  • the compressor unit is mechanically completely decoupled from the turbine unit, for example, an electrical, a pneumatic and / or a
  • the turbine unit and the compressor unit are electromechanically or electrically coupled together.
  • control and / or regulating unit is advantageously provided to the
  • Requirement characteristic of the exhaust gas recirculation at least substantially to be adjusted by adjusting the turbine unit.
  • the setting of the requirement characteristic has at least essentially the effect on the exhaust gas counterpressure relevant for the scavenging gradient.
  • the fresh air mass flow in such an embodiment is at least substantially unaffected by the setting of the requirement characteristic.
  • the boost pressure can be adapted to a modified EGR mass flow to adjust the fresh air mass flow to a requested value, which is necessary for an internal combustion engine can provide a requested engine performance.
  • the exhaust gas values can be influenced.
  • the term "at least essentially” means, in particular, that the control and / or regulating unit is intended to be used in the event of a cessation of the
  • Requirement parameter to leave a setting of the compressor unit substantially unchanged.
  • Requirement characteristic at least at a constant requested engine power the change of the exhaust back pressure at least by a factor of 2, preferably at least by a factor of 5, and particularly preferably at least by a factor 10 is greater than the change of
  • Fresh-air mass flow If, for example, the exhaust backpressure is increased by 10%, the fresh air mass flow increases at a constant requested engine power particularly preferably by at most 1%.
  • the control and / or regulating unit is provided for adjusting the
  • the turbine unit at least partially independent of the
  • control and / or regulating unit can independently set the boost pressure and the EGR rate.
  • independent is understood in particular to mean that the control and / or regulating unit has at least one Provides control characteristic, which is provided for the compressor unit, and at least provides a control characteristic, which is provided for the turbine unit.
  • at least partially means, in particular, that the control and / or regulating unit can additionally provide at least one further control parameter which is provided for the compressor unit and the turbine unit.
  • the Brerinkraftmaschinenvorraum has at least one energy storage device to which the compressor unit and / or the turbine unit are connected. As a result, power peaks can be buffered. For example, a
  • Power surplus of the turbine unit can be used to supply power to the energy storage. This power can be supplied to the compressor unit at a later time.
  • the energy store is preferably designed as an electrical energy store.
  • the energy store may, in particular depending on an embodiment of the
  • Turbocharger also have a different configuration, for example, if hydraulic and / or pneumatic components are provided for adjusting the compressor unit and / or the turbine unit.
  • the internal combustion engine device has a generator which is connected to the energy store, or a starter generator provided for starting an internal combustion engine, which is connected to the energy store.
  • an electric power for operating the compressor unit can be generated by the generator or the starter-generator and stored temporarily by means of the energy store.
  • At least the compressor unit can be adjusted completely independently of the turbine unit, since the power requested by the compressor unit can be provided by the energy store. If the generator is provided by a shaft of the internal combustion engine, such as by a crankshaft of the
  • Internal combustion engine to be driven can be dispensed with the turbine unit for generating electrical power.
  • the control and / or regulating unit can set the request characteristic very easily by such an embodiment.
  • an internal combustion engine in particular a diesel engine, with a
  • FIG. 1 schematically shows an exemplary embodiment of an internal combustion engine 22 with an internal combustion engine device 23.
  • the internal combustion engine device 23 has an intake tract 12 and an exhaust system 13.
  • the engine device 23 includes an exhaust gas recirculation 1, which is provided to the exhaust gas from the exhaust system 13 the
  • the exhaust gas recirculation 1 comprises an EGR line 14 with an exhaust gas cooler 15 and an exhaust gas recirculation valve 16.
  • the exhaust gas cooler 15 is provided to cool the exhaust gas before it is supplied to a guided in the intake manifold 12 fresh air.
  • Exhaust gas recirculation valve 16 is designed to provide an EGR mass flow, i. a mass flow of the exhaust gas flowing through the EGR passage 14 to adjust.
  • the EGR mass flow is driven in operation by a purge gradient between the exhaust system 13 and the intake tract 12.
  • the engine 22 is formed as a diesel engine. In the illustrated
  • the internal combustion engine 22 to an idle speed of about 600 U / min.
  • the internal combustion engine 22 is thus designed as a high-speed rotor.
  • the internal combustion engine 22 comprises, depending on the design, between 8 and 20 cylinders, with only one of the cylinders 17 being provided with a reference numeral for the sake of simplicity.
  • Each of the cylinders 17 of the internal combustion engine 22 has a cylinder volume of at least 4.77 l.
  • a cylinder output of the internal combustion engine 22 is at least 150 kW.
  • the diesel engine is thus for a power between 1200 kW and 3000 kW
  • diesel engine can also have other engine data.
  • the engine device 23 further includes a turbocharger 2.
  • the turbocharger 2 is particularly intended to provide a boost pressure in the intake tract 12 which is increased relative to an ambient pressure.
  • the turbocharger 2 comprises a compressor unit 7 which, in one operation, compresses the fresh air drawn in from an environment and thereby provides the increased boost pressure.
  • the compressor unit 7 comprises a compressor wheel 8.
  • the compressor wheel 8 is arranged in the intake tract 12. In one operation, the compressor wheel 8 is driven and thereby compresses the Fresh air sucked in from the environment.
  • the compressed fresh air is in an operation with the exhaust gas, which is supplied to the intake manifold 12 via the exhaust gas recirculation 1, and fed as combustion air mass flow to the cylinders 17 of the internal combustion engine 22.
  • the combustion air supplied to the cylinders 17 is mixed with a fuel.
  • the combustion air and the fuel form an ignitable air-fuel mixture in the cylinders 17.
  • the internal combustion engine 22 on a plurality of injectors, not shown, which are intended to inject the fuel directly into the cylinder 17.
  • injectors not shown, which are intended to inject the fuel directly into the cylinder 17.
  • other embodiments are conceivable. In this
  • the fuel is designed as a diesel fuel.
  • the air-fuel mixture ignites automatically when compressed.
  • the turbocharger 2 comprises a turbine unit 4, which is provided to provide a power for driving the compressor unit 7.
  • the turbine unit 4 comprises a
  • Turbine 5 which is arranged in the exhaust system 13.
  • the exhaust gas forms an exhaust gas mass flow whose pressure and / or its kinetic energy drives the turbine wheel 5.
  • a portion of the exhaust gas mass flow exiting the cylinders 17 is supplied to the intake manifold 12 via the EGR passage 14. The remaining exhaust gas is discharged via the turbine unit 4.
  • the exhaust gas recirculation 1 is arranged in a high-pressure region.
  • the exhaust system 13 has a front of the turbine 5 arranged branch 18, at which the EGR line 14 branches off from the exhaust system 13.
  • the intake tract 12 has an opening 19, at which the EGR line 14 opens into the intake tract 12.
  • the junction 19 is arranged downstream of the compressor unit 7, based on a flow direction of the combustion air mass flow.
  • the purging slope is formed as a pressure difference between an exhaust back pressure in the exhaust system 13 and a boost pressure in the intake tract 12.
  • the turbocharger 2 is adjustable.
  • the internal combustion engine device 23 comprises a control and regulation unit 3, which is provided to set a requirement parameter of the exhaust gas recirculation 1 by adjusting the turbocharger 2.
  • the demand characteristic of the exhaust gas recirculation 1 is formed as the EGR rate.
  • the Internal combustion engine 22 at least one exhaust gas value, which depends on the EGR rate.
  • the control unit 3 adjusts the EGR rate in one operation such that the exhaust gas values are within predefined exhaust gas limit values.
  • the setting of the EGR rate may be configured as a controller or as a controller.
  • maps can be stored in the control and regulation unit 3, which set the request characteristic in dependence of other parameters.
  • For a control further sensors, such as a lambda probe 20 may be provided, which detect the exhaust gas values.
  • the turbine unit 4 of the turbocharger 2 is adjustable.
  • the control unit 3 is provided by adjustment of the turbine unit 4, the request characteristic of
  • the turbine unit 4 has a generator 6 coupled to the turbine wheel 5.
  • the turbine 5 of the turbine unit 4 is provided for driving the generator 6.
  • a rotational speed which has the turbine wheel 5 depends on a power that the generator 6 outputs. In this case, the larger the power output by the generator 6, the smaller the rotational speed that the turbine wheel 5 has. With decreasing speed increases simultaneously generated by the turbine 5 flow resistance.
  • the exhaust back pressure depends in particular on the
  • the compressor unit 7 is mechanically completely decoupled from the turbine unit 4 in the illustrated embodiment.
  • the turbine unit 4 and the compressor unit 7 are electromechanically coupled with each other.
  • the compressor unit 7 has an electric motor 9 which is provided for driving the compressor wheel 8. The in one operation of the
  • Turbine unit 4 delivered electrical power can be used for a drive of the compressor 8.
  • the control unit 3 is provided to adjust the electric power transmitted from the turbine unit 4 to the compressor unit 7. By change the transmitted electric power, the control unit 3 is provided to change the coupling between the turbine unit 4 and the compressor unit 7.
  • the control unit 3 is provided to the request characteristic of
  • Exhaust gas recirculation 1 essentially by adjusting the turbine unit 4 set.
  • the control and regulation unit 3 is provided, in particular, for setting a power requirement for the turbine unit 4. If the exhaust gas mass flow is sufficiently high, the turbine unit 4 provides a power that the
  • control unit 3 is provided for setting the request characteristic, the turbine unit 4 regardless of the
  • Adjust compressor unit 7 To set the requirement parameter, the control and regulation unit 3 only changes the power requirement to the turbine unit 4.
  • the internal combustion engine device 23 comprises an electrical energy store 10, to which the compressor unit 7 and the turbine unit 4 are connected.
  • the energy store 10 is intended to receive, store and deliver electrical power. If the power provided by the turbine unit 4 is greater than the power consumed by the compressor unit 7, the energy storage device 10 is supplied by the turbine unit 4
  • the energy storage 10 is in the form of a battery.
  • the control unit 3 is provided to control the compressor unit 7 independently of the turbine unit 4.
  • the internal combustion engine 22 has a crankshaft 21, to which the starter-generator 11 is connected.
  • the starter generator 11 is provided to provide a starting torque for starting the engine 22. In one operation, the starter-generator 11 is intended to deliver electrical power dissipated by the
  • the starter-generator 11 is particularly intended to provide the differential power to the power supplied by the Turbine unit 4 is provided, is smaller than the power absorbed by the compressor unit 7.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Supercharger (AREA)
  • Exhaust-Gas Circulating Devices (AREA)

Abstract

L'invention concerne un système pour moteur à combustion interne (23) comprenant une recirculation des gaz d'échappement (1), un turbocompresseur réglable (2) et une unité de commande et/ou de régulation (3) destinée au réglage du turbocompresseur (2), ladite unité de commande et/ou de régulation (3) étant conçue pour régler une caractéristique requise de la recirculation des gaz d'échappement (1) par réglage du turbocompresseur (2). L'invention concerne par ailleurs un moteur à combustion interne (22) pourvu d'un tel système pour moteur à combustion interne (23), ainsi qu'un procédé pour faire fonctionner un moteur à combustion interne (22) pourvu d'un tel système pour moteur à combustion interne (23).
PCT/EP2016/000198 2015-03-18 2016-02-05 Système pour moteur à combustion interne, moteur à combustion interne et procédé pour faire fonctionner un système pour moteur à combustion interne WO2016146229A1 (fr)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017110082A1 (de) * 2017-05-10 2018-11-15 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Verfahren zum Betreiben einer Brennkraftmaschine mit einem elektrisch unterstützten Abgasturbolader
DE102020004926A1 (de) 2020-08-13 2022-02-17 Cellcentric Gmbh & Co. Kg Turbolader für einen Energiewandler eines Kraftfahrzeugs, Kraftfahrzeug sowie Verfahren zum Betreiben eines Turboladers
DE102020004927A1 (de) 2020-08-13 2022-02-17 Cellcentric Gmbh & Co. Kg Turbolader für einen Energiewandler eines Kraftfahrzeugs, Kraftfahrzeug sowie Verfahren zum Betreiben eines solchen Turboladers
US20220260008A1 (en) * 2021-02-12 2022-08-18 Subaru Corporation Supercharging system

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DE10334809A1 (de) * 2002-07-31 2004-03-25 Denso Corp., Kariya Steuerungssystem für eine Brennkraftmaschine
WO2004027235A1 (fr) * 2002-09-19 2004-04-01 Detroit Diesel Corporation Procede de commande d'un moteur au moyen de systemes vgt et egr
US20100170245A1 (en) * 2007-04-16 2010-07-08 Continental Automotive Gmbh Turbocharger configuration and turbochargeable internal combustion engine
US20120297767A1 (en) * 2009-07-27 2012-11-29 Ecomotors International, Inc. System and Method to Control an Electronically-Controlled Turbocharger

Patent Citations (4)

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Publication number Priority date Publication date Assignee Title
DE10334809A1 (de) * 2002-07-31 2004-03-25 Denso Corp., Kariya Steuerungssystem für eine Brennkraftmaschine
WO2004027235A1 (fr) * 2002-09-19 2004-04-01 Detroit Diesel Corporation Procede de commande d'un moteur au moyen de systemes vgt et egr
US20100170245A1 (en) * 2007-04-16 2010-07-08 Continental Automotive Gmbh Turbocharger configuration and turbochargeable internal combustion engine
US20120297767A1 (en) * 2009-07-27 2012-11-29 Ecomotors International, Inc. System and Method to Control an Electronically-Controlled Turbocharger

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017110082A1 (de) * 2017-05-10 2018-11-15 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Verfahren zum Betreiben einer Brennkraftmaschine mit einem elektrisch unterstützten Abgasturbolader
DE102017110082B4 (de) * 2017-05-10 2018-12-13 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Verfahren zum Betreiben einer Brennkraftmaschine mit einem elektrisch unterstützten Abgasturbolader
DE102020004926A1 (de) 2020-08-13 2022-02-17 Cellcentric Gmbh & Co. Kg Turbolader für einen Energiewandler eines Kraftfahrzeugs, Kraftfahrzeug sowie Verfahren zum Betreiben eines Turboladers
DE102020004927A1 (de) 2020-08-13 2022-02-17 Cellcentric Gmbh & Co. Kg Turbolader für einen Energiewandler eines Kraftfahrzeugs, Kraftfahrzeug sowie Verfahren zum Betreiben eines solchen Turboladers
US20220260008A1 (en) * 2021-02-12 2022-08-18 Subaru Corporation Supercharging system

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