WO2019020256A1 - Procédé et dispositif de régénération d'un filtre à particules d'un véhicule - Google Patents

Procédé et dispositif de régénération d'un filtre à particules d'un véhicule Download PDF

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Publication number
WO2019020256A1
WO2019020256A1 PCT/EP2018/065306 EP2018065306W WO2019020256A1 WO 2019020256 A1 WO2019020256 A1 WO 2019020256A1 EP 2018065306 W EP2018065306 W EP 2018065306W WO 2019020256 A1 WO2019020256 A1 WO 2019020256A1
Authority
WO
WIPO (PCT)
Prior art keywords
electric machine
drive
regeneration
vehicle
internal combustion
Prior art date
Application number
PCT/EP2018/065306
Other languages
German (de)
English (en)
Inventor
Matthias EGE
Christian Post
Original Assignee
Robert Bosch Gmbh
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 Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO2019020256A1 publication Critical patent/WO2019020256A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W20/00—Control systems specially adapted for hybrid vehicles
    • B60W20/10—Controlling the power contribution of each of the prime movers to meet required power demand
    • B60W20/15—Control strategies specially adapted for achieving a particular effect
    • B60W20/16—Control strategies specially adapted for achieving a particular effect for reducing engine exhaust emissions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W10/00—Conjoint control of vehicle sub-units of different type or different function
    • B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
    • B60W10/08—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W20/00—Control systems specially adapted for hybrid vehicles
    • B60W20/10—Controlling the power contribution of each of the prime movers to meet required power demand
    • B60W20/13—Controlling the power contribution of each of the prime movers to meet required power demand in order to stay within battery power input or output limits; in order to prevent overcharging or battery depletion
    • 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
    • F02D41/021—Introducing corrections for particular conditions exterior to the engine
    • F02D41/0235—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus
    • F02D41/027—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to purge or regenerate the exhaust gas treating apparatus
    • F02D41/029—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to purge or regenerate the exhaust gas treating apparatus the exhaust gas treating apparatus being a particulate filter
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W20/00—Control systems specially adapted for hybrid vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/06—Combustion engines, Gas turbines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/06—Combustion engines, Gas turbines
    • B60W2510/068—Engine exhaust temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2510/00—Input parameters relating to a particular sub-units
    • B60W2510/24—Energy storage means
    • B60W2510/242—Energy storage means for electrical energy
    • B60W2510/244—Charge state
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2710/00—Output or target parameters relating to a particular sub-units
    • B60W2710/06—Combustion engines, Gas turbines
    • B60W2710/0666—Engine torque
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2710/00—Output or target parameters relating to a particular sub-units
    • B60W2710/08—Electric propulsion units
    • B60W2710/083—Torque
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
    • B60W2710/00—Output or target parameters relating to a particular sub-units
    • B60W2710/24—Energy storage means
    • B60W2710/242—Energy storage means for electrical energy
    • B60W2710/244—Charge state
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2250/00—Engine control related to specific problems or objectives
    • F02D2250/36—Control for minimising NOx emissions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2400/00—Control systems adapted for specific engine types; Special features of engine control systems not otherwise provided for; Power supply, connectors or cabling for engine control systems
    • F02D2400/16—Adaptation of engine control systems to a different battery voltages, e.g. for using high voltage batteries
    • 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 is based on a method and a device for the regeneration of a particulate filter of a vehicle according to the preamble of the independent claims.
  • a vehicle which has an internal combustion engine with a particle filter and a navigation device.
  • the data of the navigation device are used to calculate a vehicle load based on a travel route of the vehicle. In this case, routes are preferred in which the vehicle load is advantageous for regeneration of the particulate filter.
  • the method according to the invention or the device according to the invention for the regeneration of a particulate filter of a vehicle has the advantage that the regeneration of the particulate filter in the vehicle is optimized.
  • the electric machine is used as a drive to produce an advantageous load state of the internal combustion engine for the regeneration and the NOx emissions. This way, the NOx emissions can be reduced.
  • FIG. 2 shows the steps of the method according to the invention.
  • FIG. 1 shows a drive for a hybrid vehicle consisting of an electric motor 2 and an internal combustion engine 1. Both motors are able to drive a drive shaft 4 of the vehicle and thus cause a movement of the vehicle.
  • a control whether the drive of the drive shaft for each vehicle by the electric motor 2 or by the internal combustion engine 1 is coordinated by a control unit 10 which causes by control pulses a corresponding power output of the internal combustion engine 1 and the electric motor 2 to the drive shaft 4 of the vehicle ,
  • the control unit 10 controls the internal combustion engine 1 or the electric motor 2 via corresponding drive lines.
  • the internal combustion engine 1 has a plurality of cylinders 3.
  • the combustion exhaust gases of the combustion in the cylinders 3 are discharged through an exhaust pipe 5 through a particulate filter 6 and finally also after the particulate filter through the exhaust pipe 7 to the environment. Further exhaust aftertreatment means, such as further catalysts, are not shown in FIG. 1 for reasons of clarity.
  • the exhaust gas contains fine particles, which are commonly referred to as soot. However, these are not just carbon but also other substances contained in fuels, such as sulfur.
  • the particle filter 6 Through the passage through the particle filter 6, these particles are filtered out of the exhaust gas, so that only a few or no particles are contained in the opening into the environment exhaust pipe 7. Due to this continuous filtering process, the particulate filter 6 stores the particles.
  • a regeneration phase is provided.
  • the temperature in the particulate filter 6 is kept at a sufficient value, since the combustion of the particles stored in the particulate filter 6 requires an initial temperature of, for example, 580 degrees.
  • the vehicle still has a battery 12 and a navigation device 11.
  • the battery 12 is connected to the electric machine 2 and either supplies electrical energy for operating the electric machine 2 as a drive or else receives electrical energy from the electric machine 2, which is then stored in the battery when the electric machine 2 is operated as a generator becomes.
  • the state of charge of the battery which is also referred to as SOC (State of Charge) is monitored by a corresponding device, such as a control unit. This function can, for example, be taken over by the control unit 10 for controlling the internal combustion engine 1 or the electric machine 2. Alternatively, a separate battery control device may be provided. Still referring to Figure 2, details of regeneration during high load operation are shown. In a first step 201, an ongoing regeneration is detected once again.
  • step 201 is followed by step 202. If no regeneration is currently taking place, step 201 is again followed by step 201, ie the method of FIG. 2 is not started.
  • step 202 it is checked whether the NOx emissions are too high or the engine is operating in a critical operating range. If the NOx emissions are not above a threshold or the engine is not operating in a critical range, then step 201 is followed by step 201. If the NOx emissions are above a threshold or the engine is operating in a critical range Step 203 is followed by Step 203. At Step 203, it is checked whether the NOx emission can be brought into an acceptable range by shifting the load point without deteriorating the regeneration of the particulate filter.
  • step 203 is again followed by step 201, and if so, step 203 is followed by step 204.
  • the transition from step 203 to step 204 is preferably at high engine loads since then the NOx emissions are very high and due to the heat generation associated with a high load, there is no danger of interrupting the regeneration of the particulate filter. Furthermore, the exhaust gas temperatures are relatively high in such a driving operation. Due to these high temperatures, the usual measures for reducing NOx emissions, such as a NOx storage catalytic converter, are operated in a range in which the efficiency of these measures is low. In the case of low loads, the possibilities of reducing the NOx emissions are also reduced due to the high temperatures in the regeneration of the particulate filter 6. In this case, however, the temperature window for the regeneration of the particulate filter would be left immediately by relieving the internal combustion engine. Therefore, the transition from step 203 to step 204 usually does not occur at a low load.
  • step 204 it is then checked whether the electrical system allows a corresponding shift of the operating point of the engine.
  • the electric machine 2 must be able to supply a corresponding power to the drive shaft 4 from giving and the battery 12 must be able to provide the appropriate electrical energy.
  • the electric machine or the battery may be too hot, so that further operation for replacing the internal combustion engine is temporarily out of the question. If it is determined in step 204 that the electrical system is not ready, then step 201 follows, and if the readiness of the electrical system is determined, step 204 is followed by step 205.
  • step 205 the electrical system then engages the operating point of the internal combustion engine 1 is shifted so that a reduction of the NOx release takes place without thereby the regeneration of the particulate filter 6 would be deteriorated. This way, regeneration and the emission of NOx can be optimized simultaneously during operation.
  • One of the prerequisites for operation of the electric machine 2 as a drive for reducing the NOx emissions is a sufficient state of charge of the battery.
  • a predictive state of charge control can take place.
  • the electric machine When regeneration of the particulate filter is imminent, the electric machine may be operated as a generator to condition the battery to an appropriate target value. The battery charge is then used in the subsequent regeneration phase to reduce NOx emissions. It can thus reduce the NOx emissions during regeneration.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • Transportation (AREA)
  • Automation & Control Theory (AREA)
  • General Engineering & Computer Science (AREA)
  • Processes For Solid Components From Exhaust (AREA)
  • Hybrid Electric Vehicles (AREA)

Abstract

L'invention concerne un procédé et un dispositif pour la régénération d'un filtre à particules (6) d'un véhicule, le véhicule comprenant un moteur à combustion interne (1), une machine électrique (2) et une batterie (12). La machine électrique (2) peut être utilisée comme entraînement du véhicule en conjonction avec le moteur à combustion interne (1), ou comme entraînement seul ou comme générateur. Des moyens sont en outre prévus qui vérifient, lors d'une régénération en cours, si les émissions de NOx du moteur à combustion interne (1) peuvent être réduites par l'utilisation de la machine électrique (2) comme entraînement, sans que la régénération en soit significativement dégradée. Si la vérification est positive, la machine électrique (2) est utilisée comme entraînement pour réduire les émissions de NOx.
PCT/EP2018/065306 2017-07-26 2018-06-11 Procédé et dispositif de régénération d'un filtre à particules d'un véhicule WO2019020256A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017212811.9 2017-07-26
DE102017212811.9A DE102017212811A1 (de) 2017-07-26 2017-07-26 Verfahren und Vorrichtung zur Regeneration eines Partikelfilters eines Fahrzeugs

Publications (1)

Publication Number Publication Date
WO2019020256A1 true WO2019020256A1 (fr) 2019-01-31

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PCT/EP2018/065306 WO2019020256A1 (fr) 2017-07-26 2018-06-11 Procédé et dispositif de régénération d'un filtre à particules d'un véhicule

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DE (1) DE102017212811A1 (fr)
WO (1) WO2019020256A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007008745A1 (de) * 2006-03-03 2007-09-06 Mitsubishi Fuso Truck and Bus Corp., Kawasaki Steuergerät für ein elektrisches Hybridfahrzeug
EP2157407B1 (fr) 2008-08-19 2011-10-12 Robert Bosch Gmbh Procédé et dispositif de calcul d'un parcours
US20130204476A1 (en) * 2012-02-07 2013-08-08 Robert Bosch Gmbh Method and device for regenerating a particle filter present in a hybrid drive
US20130231842A1 (en) * 2012-03-01 2013-09-05 Robert Bosch Gmbh Method for operating a drive device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007008745A1 (de) * 2006-03-03 2007-09-06 Mitsubishi Fuso Truck and Bus Corp., Kawasaki Steuergerät für ein elektrisches Hybridfahrzeug
EP2157407B1 (fr) 2008-08-19 2011-10-12 Robert Bosch Gmbh Procédé et dispositif de calcul d'un parcours
US20130204476A1 (en) * 2012-02-07 2013-08-08 Robert Bosch Gmbh Method and device for regenerating a particle filter present in a hybrid drive
US20130231842A1 (en) * 2012-03-01 2013-09-05 Robert Bosch Gmbh Method for operating a drive device

Also Published As

Publication number Publication date
DE102017212811A1 (de) 2019-01-31

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