EP3701136A1 - Steuereinrichtung zum ansteuern eines verbrennungsmotors und verfahren zum erwärmen einer abgasreinigungseinrichtung - Google Patents
Steuereinrichtung zum ansteuern eines verbrennungsmotors und verfahren zum erwärmen einer abgasreinigungseinrichtungInfo
- Publication number
- EP3701136A1 EP3701136A1 EP18773417.3A EP18773417A EP3701136A1 EP 3701136 A1 EP3701136 A1 EP 3701136A1 EP 18773417 A EP18773417 A EP 18773417A EP 3701136 A1 EP3701136 A1 EP 3701136A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fluid
- temperature
- combustion engine
- internal combustion
- control device
- 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.)
- Withdrawn
Links
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 73
- 238000010438 heat treatment Methods 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 18
- 239000012530 fluid Substances 0.000 claims abstract description 95
- 239000000446 fuel Substances 0.000 claims abstract description 31
- 238000002347 injection Methods 0.000 claims abstract description 20
- 239000007924 injection Substances 0.000 claims abstract description 20
- 230000006835 compression Effects 0.000 claims abstract description 13
- 238000007906 compression Methods 0.000 claims abstract description 13
- 238000000746 purification Methods 0.000 claims description 70
- 238000005259 measurement Methods 0.000 claims description 6
- 238000012360 testing method Methods 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 5
- 238000013022 venting Methods 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 description 77
- 239000003054 catalyst Substances 0.000 description 9
- 238000004590 computer program Methods 0.000 description 5
- 238000004393 prognosis Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000007792 addition Methods 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000010411 electrocatalyst Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000007420 reactivation Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/04—Introducing corrections for particular operating conditions
- F02D41/06—Introducing corrections for particular operating conditions for engine starting or warming up
- F02D41/062—Introducing corrections for particular operating conditions for engine starting or warming up for starting
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- 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
- F02D41/024—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to increase temperature of the exhaust gas treating apparatus
- F02D41/0245—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to increase temperature of the exhaust gas treating apparatus by increasing temperature of the exhaust gas leaving the engine
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- 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
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- 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
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- 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
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- 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
- B60W20/40—Controlling the engagement or disengagement of prime movers, e.g. for transition between prime movers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
- F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
- F02D13/0203—Variable control of intake and exhaust valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D35/00—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for
- F02D35/02—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions
- F02D35/025—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions by determining temperatures inside the cylinder, e.g. combustion temperatures
- F02D35/026—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions by determining temperatures inside the cylinder, e.g. combustion temperatures using an estimation
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- 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
- F02D41/024—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to increase temperature of the exhaust gas treating apparatus
- F02D41/0255—Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to increase temperature of the exhaust gas treating apparatus to accelerate the warming-up of the exhaust gas treating apparatus at engine start
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- 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
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
- F02D41/2425—Particular ways of programming the data
- F02D41/2429—Methods of calibrating or learning
- F02D41/2441—Methods of calibrating or learning characterised by the learning conditions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/30—Controlling fuel injection
- F02D41/32—Controlling fuel injection of the low pressure type
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- 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
- B60W2510/0614—Position of fuel or air injector
- B60W2510/0623—Fuel flow rate
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- 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
- B60W2510/0676—Engine temperature
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
- F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
- F02D13/0242—Variable control of the exhaust valves only
- F02D13/0249—Variable control of the exhaust valves only changing the valve timing only
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D17/00—Controlling engines by cutting out individual cylinders; Rendering engines inoperative or idling
- F02D17/02—Cutting-out
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
- F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
- F02D2013/0292—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation in the start-up phase, e.g. for warming-up cold engine or catalyst
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- 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
- F02D2041/001—Controlling intake air for engines with variable valve actuation
- F02D2041/0012—Controlling intake air for engines with variable valve actuation with selective deactivation of cylinders
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/023—Temperature of lubricating oil or working fluid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/04—Engine intake system parameters
- F02D2200/0414—Air temperature
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/08—Exhaust gas treatment apparatus parameters
- F02D2200/0802—Temperature of the exhaust gas treatment apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/08—Exhaust gas treatment apparatus parameters
- F02D2200/0802—Temperature of the exhaust gas treatment apparatus
- F02D2200/0804—Estimation of the temperature of the exhaust gas treatment apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/10—Parameters related to the engine output, e.g. engine torque or engine speed
- F02D2200/101—Engine speed
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/70—Input parameters for engine control said parameters being related to the vehicle exterior
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/04—Introducing corrections for particular operating conditions
- F02D41/12—Introducing corrections for particular operating conditions for deceleration
- F02D41/123—Introducing corrections for particular operating conditions for deceleration the fuel injection being cut-off
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- 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
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- 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
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- 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 present invention relates to a control device for controlling an internal combustion engine in a towing mode to maintain or bring an exhaust gas purification device connected downstream of the internal combustion engine at an operating temperature, and to a method for heating an exhaust gas purification device.
- an internal combustion engine is usually followed by an exhaust gas purification system which removes impurities, such as NO x or Ru ß, from the exhaust gas emitted by the internal combustion engine.
- This exhaust gas purification device must have a minimum temperature for proper operation. In a normal operation of the internal combustion engine, this temperature is basically given, but the internal combustion engine is held in a towed state for a long time, for example, in a longer downhill or, in the case of a hybrid drive, using an electric machine, the temperature of the exhaust gas purification device can decrease so far or be so low that an exhaust gas purification is not possible. It has therefore been proposed, for example in DE 19720381, to bring the exhaust gas purification device by means of an additional heating element to the required operating temperature during operation of an emission-free drive unit, such as an electric machine, and before the start of the internal combustion engine.
- a disadvantage of this external and additional heating element is that additional electrical energy must be applied to the heating element and a space for the heating element must be provided.
- Object of the present invention is therefore to provide a way to keep an exhaust gas purification device to operating temperature or bring without an additional heating system must be provided and without polluting the environment by excessive emissions of the exhaust gas.
- a control device for controlling an internal combustion engine with at least one cylinder-piston unit in a drag mode which serves to bring or to maintain an exhaust gas purification device assigned to the internal combustion engine to an operating temperature.
- a piston movement of the cylinder-piston unit is induced via a movement of an output unit, in particular an output shaft, assigned to the internal combustion engine.
- an output unit in particular an output shaft
- Such a towing mode for example, by special driving conditions, such as a downhill or the removal of the foot of the accelerator arise.
- the piston is moved purely by the transmitted from the wheels to the output shaft rotational movement, provided that the internal combustion engine is coupled to the output shaft.
- such a towing mode can be achieved if, for example, in a purely electric driving, in which an electric machine transmits a torque to the wheels of the vehicle, the engine is not decoupled from the electric machine by means of a coupling device, but remains coupled, so that Torque of the electric machine is transmitted not only to the wheels, but also to the internal combustion engine. Again, the movement of the piston is induced by the rotational movement of the output shaft.
- each cylinder piston unit of the internal combustion engine has an intake valve to supply an intake fluid into the cylinder.
- This inlet fluid may be pure air or an air-fuel mixture depending on the design of the engine.
- the cylinder-piston unit to an exhaust valve, which is an outlet fluid in the Transfer exhaust purification device.
- this outlet fluid is the exhaust gas, that is to say the combustion gases after the fuel combustion has taken place in the cylinder-piston unit.
- fuel may be introduced by means of a fuel injector directly into the inlet fluid upstream or downstream of the inlet valve. The control of intake valve and exhaust valve and the fuel injection into the intake fluid is controlled by the controller.
- the exhaust gas purifier may be a three-way catalyst, a particulate filter, a catalytic coated particulate filter, a NOx trap catalyst, an SCR catalyst, an oxidation catalyst, or combinations thereof.
- a particulate filter e.g., a particulate filter
- a catalytic coated particulate filter e.g., a NOx trap catalyst
- SCR catalyst e.g., a SCR catalyst
- oxidation catalyst e.g., SCR catalyst
- oxidation catalyst e.g., oxidation catalyst, or combinations thereof.
- other and / or additional exhaust gas purification devices may be present.
- this control device can be used both in pure combustion engines in the case of long downhill.
- the use is particularly advantageous in hybrid powertrains, where an emission-free drive, such as an electric machine, provides for the towing mode of the vehicle.
- an emission-free drive such as an electric machine
- the exhaust gas purification device must be brought to operating temperature in order to avoid excessive emissions of pollutants.
- a prognosis model stored, for example, in a memory unit belonging to the control device can be used. This prognosis model predicts a connection of the internal combustion engine based, for example, on a driving profile, on GPS data and / or traffic information data.
- control device is further configured to control the exhaust valve such that the exhaust valve is opened when the piston is in a region of top dead center.
- the fluid in the cylinder more precisely in the cylinder interior, has its highest compression and thus its highest heating and, when exhausted, can effectively heat the exhaust gas purifier.
- the exhaust valve can also be opened at a different position than in the region of top dead center. While this may reduce the achievable temperature of the fluid in the cylinder, the achievable temperature is still high enough to allow heating of the exhaust gas purifier.
- Reasons for opening the exhaust valve to another location may be due to hardware limitations, for example.
- the control device controls the outlet valve in such a way that the outlet valve is opened when the heated outlet fluid has a desired or required temperature.
- the exhaust valve can be opened, but it is also possible to let the piston pass through several strokes until the fluid in the cylinder has the appropriate temperature.
- an exhaust gas recirculation (EGR) system may also be used to recirculate exhaust gas that has already been heated into an intake manifold of the internal combustion engine. Since then already heated fluid is introduced into the cylinder interior, the temperature can be significantly increased again.
- the exhaust valve can also be controlled in such a way that instead of actuating the intake valve fresh, cold inlet fluid into the cylinder interior, the exhaust valve is opened during suction, so that the heated exhaust fluid is sucked back into the cylinder interior and there can be heated further.
- a sensor may be provided in the cylinder which determines the temperature of the fluid.
- the temperature model may further determine a temperature change based on the rotational speeds of the combustion engine, the temperatures of the intake fluid, the ambient ambient temperatures, and / or the number of piston strokes.
- control device is further designed to enable a reactivation of the fuel injection and a transition of the valve control to normal operation only when the exhaust gas purification device has reached a certain minimum temperature, in particular its operating temperature. This can ensure that a "normal" engine operation or a connection of the internal combustion engine takes place only if a functioning exhaust gas cleaning is ensured. The reaching of the operating temperature can also be measured by a sensor.
- the achievement of the corresponding operating temperature of the exhaust gas purification device can be estimated by the temperature profiles are determined on a test bench for a variety of operating parameters and stored in the temperature model.
- the temperature model can also define when and under what conditions the exhaust gas purification device reaches its operating temperature.
- aging-related operating temperature increases of the exhaust gas purification device can be taken into account by both the measuring sensors and the temperature model. This is particularly advantageous since, depending on the mileage or generally an aging state of the exhaust gas purification device increases its minimum operating temperature over time.
- the use of the temperature model has the advantage that no additional units, such as temperature sensors, must be provided in the cylinder or the exhaust gas purification device, which interact with the control device.
- the control device does not automatically control the fuel injection or the valves, as described above, in each detected towing mode, but first of all checks whether heating of the exhaust gas purification device is necessary at all. Such heating may be required, for example, if the combustion engine is connected by means of the above-mentioned prognosis model and / or if the temperature of the exhaust gas purification device is below the operating temperature. Whether the latter is the case can be determined by direct measurement with the probe or via the above-mentioned temperature model.
- an additional heating element such as, for example, a heatable pane, an electrocatalyst or the like, can still be present upstream of the waste gas purification device.
- a further aspect of the present invention relates to a hybrid drive system of a hybrid vehicle having an electric machine and an internal combustion engine, wherein the internal combustion engine is controlled by a control device as described above.
- a further aspect of the present invention relates to a method for controlling an internal combustion engine, in particular an internal combustion engine in a hybrid drive train of a hybrid vehicle as described above, the method comprising the steps:
- the temperature model or a combustion engine start-up prognosis model is used to check whether heating of the exhaust gas purification device is necessary.
- the method has one of the following steps:
- the method may advantageously comprise one of the following steps:
- a computer program product which has a program code which is designed to cause a processor of the control unit to carry out the method explained above.
- a computer program product such as a computer program means, for example, as a storage medium, such as memory card, USB stick, CD-ROM, DVD, or in the form of a downloadable file provided by a server in a network or delivered. This can be done, for example, in a wireless communication network by transmitting a corresponding one File with the computer program product or the computer program means done.
- Fig. 1 schematic representations of two possible hybrid drive systems
- Fig. 2 a schematic representation of an internal combustion engine with
- Fig. 1 shows two different embodiments of a hybrid drive system 1, wherein in Fig. 1 a, an internal combustion engine 2 via a transmission 4 and a clutch device 6 with an output unit 8, in particular vehicle wheels 10, while an electric machine 12 with another pair of Vehicle wheels 14 is connected.
- Fig. 1 a an internal combustion engine 2 via a transmission 4 and a clutch device 6 with an output unit 8, in particular vehicle wheels 10, while an electric machine 12 with another pair of Vehicle wheels 14 is connected.
- the vehicle thus constructed on the one Wheel axle 16 is driven by the combustion engine 2, while it is driven on the other wheel axle 18 by means of an electric machine 12.
- the electric machine 12 and the internal combustion engine 2 together provide for a drive of the vehicle 1, but it is also possible that only the electric machine 12 or the internal combustion engine 2 drive the vehicle.
- Fig. 1 b shows an alternative embodiment of a vehicle with a hybrid drive, in which only one vehicle axle 16 is driven, while the other vehicle axle 18 only runs along.
- the internal combustion engine 2 and the electric motor 12 can be connected to one another via the coupling unit 6 or can be separated from one another.
- a combined operation of internal combustion engine 2 and electric motor 12 or a separate operation of only electric motor 12 or only internal combustion engine 2 can thus be provided.
- other embodiments are possible.
- the internal combustion engine 2 has, as usual, a plurality of cylinder piston units 20, one of which is schematically shown in FIG.
- the cylinder-piston unit 20 or the internal combustion engine 2 is furthermore, as FIG. 2 shows, connected to an exhaust gas purification device 30.
- an exhaust gas purification device also called catalyst, cleans the exhaust gases of the internal combustion engine 2 of pollutants, such as nitrogen oxides or soot.
- the exhaust gas purification device 30 must have a certain operating temperature. This can also change with increasing age of the exhaust gas purification device 30.
- the cylinder-piston unit 20 an inlet valve 32, an exhaust valve 34 and a fuel injection device 36, which cooperate in the rough principle such that air is introduced from an intake manifold 38 via the inlet valve 32 into the cylinder interior 28, there by means of fuel injection device 36 with Fuel is added, then ignited and the resulting during combustion exhaust gas is transferred via the exhaust valve 36 to the exhaust gas purification device 30.
- the movement of the piston 24 is induced via the taking place in the interior 28 of the cylinder-piston unit 20 combustion and the concomitant expansion and pressure movement of the piston 24 downward.
- the movement of the piston 24 is induced via, for example, the rotational movement of the wheels 10 or via the torque transmission of the electric machine 12.
- the inventor has recognized that this induced movement of the piston 24 can be used to compress and thereby heat a fluid in the cylinder space 28 and deliver the heated fluid to the exhaust gas purifier 30 to heat it.
- a control device 40 which controls both the inlet valve 32, and the exhaust valve 34 and the fuel injection device 36.
- the intake valve 32, the exhaust valve 34 and the fuel injector 36 are common elements of the internal combustion engine 2 and, as mentioned above, are typically controlled by the controller 40 such that via the inlet valve 32 the inlet fluid 42 (eg, air) enters the working space 28 of the cylinders Piston unit 20 is introduced.
- the intake fluid 42 may be an air-fuel mixture, with the fuel injector 36 disposed upstream of the valve 34 or, as in the case illustrated in FIG. 2, pure intake air introduced into the inner space 28 of the cylinder-piston unit 20 , and there is fuel added.
- the resulting exhaust gas 44 is transferred via the outlet valve 34 into the exhaust gas purification system 30.
- the control unit 40 controls the inlet valve 32, the exhaust valve 34th and the fuel injector 36 such that the fuel injection is deactivated, and a substantially fuel-free inlet fluid 42 is admitted via the inlet valve 32 into the interior space 28 of the cylinder-piston unit 20. There it is compressed by means of the drag-induced movement of the piston 24 and heated during this compression, so that the resulting heated fluid is transferred as heated exhaust fluid 44 through the exhaust valve 34 into the exhaust gas purifier 30.
- the outlet valve 34 is controlled by the control device 40 such that it opens when the piston 24 is in a region of top dead center, that is, the fluid is in a state of high compression.
- control device 40 can control the outlet valve 34 in such a way that the outlet valve 34 opens when the fluid in the cylinder interior 28 has reached a specific temperature TF.
- This temperature TF can be determined, for example, via a temperature sensor 46 arranged in the cylinder interior.
- control device 40 may be configured to enable fuel injection and normal operation of the intake and exhaust valves 32, 34 only when a temperature of the exhaust gas purification system T Ka t has reached a certain value. This temperature can also be measured, for example, via a temperature sensor 48 present in the exhaust gas purification device 30 and provided to the control device 40. Instead of the direct measurement of the temperatures in the cylinder interior 28 or in the exhaust gas purification system 30, the control device 40 may also be assigned a memory module 50, for example integrated in the control device 40, in which a temperature model of the fluid temperature T F , and / or the exhaust gas purification device temperature T Ka t is stored.
- the temperature model can be determined, for example, via measurements on an engine test bench, in which the temperature profiles of the temperatures T F and T Ka t are measured for different operating parameters and engine settings.
- the temperature model may be a multi-dimensional matrix including, for example, information about the temperature of the inlet fluid, the temperature of the environment, the speed of the towed motor, the volume flow of the outlet fluid, the temperature of the outlet fluid, and the temperature of the exhaust gas purification system.
- a prognosis model can be stored in the control unit 50, which, for example based on GPS data and / or traffic information data, predicts a connection of the internal combustion engine and thus the need for an exhaust gas purification device to operating temperature.
- the controller 40 may determine when at a given temperature of the inlet fluid T E F, a given temperature of the outlet fluid T F , a given volume flow of the outlet fluid VF, and / or a given engine speed n is an operating temperature T K at the exhaust gas purification device is reached.
- FIG. 3 is a time-temperature diagram, wherein the temperature of the catalyst T Ka t over the time t is plotted.
- FIG. 3 shows two temperature profiles I, II, which result, for example, at different output parameters.
- the exhaust-gas purification device 30 is at its operating temperature T at, as soon as when using the parameters of the graph II.
- the temperature increase of the catalyst T Ka t is essentially fundamentally dependent on the temperature of the outlet fluid T F.
- Whose temperature T F can For example, in turn, the amount of compression, or the temperature of the inlet fluid, can be affected.
- an exhaust gas recirculation system 52 (see Fig. 2) can be used to use already compressed and heated air as the inlet fluid, so that the heated air is compressed again and thus their temperature is further increased.
- Another important parameter to increase the temperature of the catalyst is the frequency at which the heated air is provided to the catalyst. This can be regulated, for example, via the speed of the motor.
- the air can also be kept in the cylinder interior for multiple piston strokes.
- an exhaust gas purification device can be maintained at an operating temperature during a drag mode of the internal combustion engine or brought to the operating temperature without the need for an additional heating device. Thereby, a cost-saving and energy-saving heating of the exhaust gas purification device can be provided.
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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)
- Automation & Control Theory (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102017219172.4A DE102017219172A1 (de) | 2017-10-25 | 2017-10-25 | Steuereinrichtung zum Ansteuern eines Verbrennungsmotors und Verfahren zum Erwärmen einer Abgasreinigungseinrichtung |
| PCT/EP2018/075270 WO2019081130A1 (de) | 2017-10-25 | 2018-09-19 | Steuereinrichtung zum ansteuern eines verbrennungsmotors und verfahren zum erwärmen einer abgasreinigungseinrichtung |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP3701136A1 true EP3701136A1 (de) | 2020-09-02 |
Family
ID=63667909
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP18773417.3A Withdrawn EP3701136A1 (de) | 2017-10-25 | 2018-09-19 | Steuereinrichtung zum ansteuern eines verbrennungsmotors und verfahren zum erwärmen einer abgasreinigungseinrichtung |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US11199146B2 (de) |
| EP (1) | EP3701136A1 (de) |
| CN (1) | CN111033019A (de) |
| DE (1) | DE102017219172A1 (de) |
| WO (1) | WO2019081130A1 (de) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102019216361A1 (de) * | 2019-10-24 | 2021-04-29 | Robert Bosch Gmbh | Verfahren zur Ventilsteuerung zum schnellen Aufheizen der Abgasanlage |
| DE102021118935A1 (de) | 2021-07-22 | 2023-01-26 | Vitesco Technologies GmbH | Batteriemanagement-Verfahren und Batteriemanagement-System für eine Bordnetz-Batterie eines Hybrid-Kraftfahrzeugs |
| DE102022213216A1 (de) * | 2022-12-07 | 2024-06-13 | Volkswagen Aktiengesellschaft | Verfahren zum Betreiben eines Hybridfahrzeugs |
Family Cites Families (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4445779A1 (de) * | 1994-12-21 | 1996-06-27 | Fev Motorentech Gmbh & Co Kg | Verfahren zur Steuerung einer Mehrzylinder-Brennkraftmaschine in der Kaltstart- und Warmlaufphase |
| DE19720381C2 (de) | 1997-05-15 | 2001-09-06 | Daimler Chrysler Ag | Hybridtriebwerk |
| JP3633401B2 (ja) * | 1999-10-26 | 2005-03-30 | トヨタ自動車株式会社 | 内燃機関の排気昇温装置 |
| EP1126148B1 (de) * | 2000-01-05 | 2003-07-02 | Robert Bosch Gmbh | Verfahren zur Regelung der Wärmeverluste eines katalytischen Konverters während Schubbetrieb |
| DE10348107B4 (de) * | 2003-10-16 | 2007-02-15 | Bayerische Motoren Werke Ag | Verfahren zum Aufheizen eines Katalysators eines Verbrennungsmotors |
| DE102004031502B4 (de) * | 2004-06-30 | 2013-12-05 | Daimler Ag | Verfahren zum Betreiben einer Brennkraftmaschine |
| DE102005006702B4 (de) * | 2005-02-15 | 2009-04-16 | Audi Ag | Verfahren und Vorrichtung zur Steuerung einer Verbrennungskraftmaschine |
| JP4973374B2 (ja) * | 2007-08-07 | 2012-07-11 | 日産自動車株式会社 | ハイブリッド原動機の制御装置 |
| JP2009103093A (ja) * | 2007-10-25 | 2009-05-14 | Mitsubishi Fuso Truck & Bus Corp | ディーゼルエンジンの制御装置 |
| US8904767B2 (en) | 2008-10-31 | 2014-12-09 | Volvo Lastvagnar Ab | Method and apparatus for cold starting an internal combustion engine |
| DE102008063449A1 (de) * | 2008-12-17 | 2010-07-01 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Verfahren zum Betreiben eines Hybridantriebs |
| DE102011017721A1 (de) * | 2011-04-28 | 2012-10-31 | Robert Bosch Gmbh | Heizen einer Abgasnachbehandlungsanlage durch Schleppen eines Verbrennungsmotors mit Hilfe eines Elektromotors |
| US9835065B2 (en) * | 2011-10-03 | 2017-12-05 | Volvo Technology Corporation | Internal combustion engine system and method for increasing the temperature in at least one part of the internal combustion engine system |
| EP2829710B1 (de) * | 2012-03-22 | 2016-11-30 | Toyota Jidosha Kabushiki Kaisha | Steuerungsvorrichtung für einen verbrennungsmotor |
| US9470128B2 (en) * | 2013-05-28 | 2016-10-18 | Electro-Motive Diesel, Inc. | Exhaust system implementing active regeneration control |
| DE102015224003A1 (de) * | 2015-12-02 | 2017-06-08 | Robert Bosch Gmbh | Verfahren zur Steuerung eines Hybridantriebs |
| CN108431390B (zh) * | 2016-01-19 | 2022-03-18 | 伊顿智能动力有限公司 | 针对热管理的汽缸停用和发动机制动 |
-
2017
- 2017-10-25 DE DE102017219172.4A patent/DE102017219172A1/de not_active Withdrawn
-
2018
- 2018-09-19 EP EP18773417.3A patent/EP3701136A1/de not_active Withdrawn
- 2018-09-19 CN CN201880054267.5A patent/CN111033019A/zh active Pending
- 2018-09-19 WO PCT/EP2018/075270 patent/WO2019081130A1/de not_active Ceased
-
2020
- 2020-02-11 US US16/787,786 patent/US11199146B2/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| DE102017219172A1 (de) | 2019-04-25 |
| CN111033019A (zh) | 2020-04-17 |
| WO2019081130A1 (de) | 2019-05-02 |
| US11199146B2 (en) | 2021-12-14 |
| US20200173388A1 (en) | 2020-06-04 |
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