EP1248898A2 - Commande d'un moteur a combustion interne multicylindre comportant des soupapes d'admission commandables individuellement - Google Patents

Commande d'un moteur a combustion interne multicylindre comportant des soupapes d'admission commandables individuellement

Info

Publication number
EP1248898A2
EP1248898A2 EP00989784A EP00989784A EP1248898A2 EP 1248898 A2 EP1248898 A2 EP 1248898A2 EP 00989784 A EP00989784 A EP 00989784A EP 00989784 A EP00989784 A EP 00989784A EP 1248898 A2 EP1248898 A2 EP 1248898A2
Authority
EP
European Patent Office
Prior art keywords
internal combustion
combustion engine
cylinders
cylinder internal
cylinder
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Withdrawn
Application number
EP00989784A
Other languages
German (de)
English (en)
Inventor
Ruediger Becker
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
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 EP1248898A2 publication Critical patent/EP1248898A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • 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
    • F02D13/0223—Variable control of the intake valves only
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/0005—Deactivating valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
    • F01L9/10—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
    • F01L9/20—Valve-gear or valve arrangements actuated non-mechanically by electric means
    • 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
    • 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
    • F02D41/008—Controlling each cylinder individually
    • 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
    • F02D41/008—Controlling each cylinder individually
    • F02D41/0087—Selective cylinder activation, i.e. partial cylinder operation
    • 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
    • F02D41/025—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 changing the composition of the exhaust gas, e.g. for exothermic reaction on exhaust gas treating apparatus
    • 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
    • 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
    • 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
    • F02D2250/18—Control of the engine output torque
    • 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

Definitions

  • the invention relates to a method for operating a multi-cylinder internal combustion engine with individually controllable intake valves, each cylinder of the multi-cylinder internal combustion engine being assigned at least one intake valve.
  • the invention further relates to a corresponding multi-cylinder internal combustion engine and an engine control for a multi-cylinder internal combustion engine.
  • the object is achieved by a method for operating a multi-cylinder internal combustion engine with individually controllable intake valves according to claim 1, wherein at least one intake valve is assigned to each cylinder of the multi-cylinder internal combustion engine.
  • the inlet valves are actuated by at least two cylinders in such a way that the at least two cylinders emit a different output.
  • the object is further achieved by a multi-cylinder internal combustion engine according to claim 14 and an engine control according to claim 15.
  • a different amount of fuel is supplied to the at least two cylinders.
  • no ignition takes place in at least one of the at least two cylinders.
  • the inlet valve of at least one cylinder remains closed when the torque applied by means of the other cylinders is sufficient to produce the desired torque.
  • the inlet valve of at least one cylinder remains closed when the power applied by the other cylinders is sufficient to produce the desired power.
  • the inlet valve of at least one cylinder remains closed if the torque applied by means of the other cylinders is sufficient to produce the torque for the multi-cylinder internal combustion engine, which torque is predetermined by a traction control system.
  • the exhaust gases of the multi-cylinder internal combustion engine are cleaned by means of a catalyst, with no ignition taking place in at least one of the at least two cylinders if the temperature of the catalyst is less than a lower tolerance value for the temperature of the catalyst.
  • fuel is supplied to the at least one of the at least two cylinders.
  • no fuel is supplied to the at least one of the at least two cylinders if the temperature of the catalytic converter is greater than an upper tolerance value for the temperature of the catalytic converter.
  • the inlet valve of the at least one of the at least two cylinders is controlled in such a way that it admits a maximum possible amount of air into the at least one of the at least two cylinders.
  • the inlet valves of the cylinders of the multi-cylinder internal combustion engine are not closed at the same time when a power setpoint for the multi-cylinder internal combustion engine is reduced.
  • the inlet valves of the cylinders of the multi-cylinder internal combustion engine are closed in succession with a predetermined delay when the power setpoint for the multi-cylinder internal combustion engine is reduced.
  • the closed inlet valves of the cylinders of the multi-cylinder internal combustion engine remain closed as long as the power output of the multi-cylinder internal combustion engine is greater than or equal to the power setpoint for the multi-cylinder internal combustion engine.
  • FIG. 1 shows a multi-cylinder internal combustion engine.
  • FIG. 2 shows a flow chart for improving the efficiency of a multi-cylinder internal combustion engine.
  • FIG. 3 shows a flow chart for improving the efficiency of a multi-cylinder internal combustion engine when a motor torque is specified by a traction control system
  • Fig. 4 is a flow chart for influencing the temperature of a catalyst
  • Fig. 1 shows an embodiment for a multi-cylinder internal combustion engine 1 with individually controllable intake valves 21, 22, 23, 24.
  • the multi-cylinder internal combustion engine 1 has an intake pipe 2, through which air into the, in an exemplary embodiment four, cylinders 61, 62nd , 63, 64 of the multi-cylinder internal combustion engine 1 can be fed.
  • a load sensor 9, which indicates the load state Q of the multi-cylinder internal combustion engine 1, and a temperature sensor 10 for measuring the temperature ⁇ air of the air which is drawn in via the intake pipe 2 are arranged on the intake pipe 2.
  • the multi-cylinder internal combustion engine 1 also has (fuel) injection nozzles 11, 12, 13, 14, by means of which fuel for the cylinders 61, 62, 63, 64 can be supplied individually.
  • the exhaust gases generated during combustion collect in an exhaust pipe 4 and are cleaned in a catalytic converter 5.
  • a lambda probe 7 is arranged in the exhaust pipe 4.
  • a temperature sensor 3 for measuring the temperature ⁇ ⁇ of the catalyst 5 is assigned to the catalyst 5.
  • the multi-cylinder internal combustion engine 1 in the present exemplary embodiment has a temperature sensor 8 for measuring the temperature u m of the coolant of the multi-cylinder internal combustion engine 1.
  • the signals ö k , ö m , ü A j. r , Q and ⁇ of the temperature sensors 3, 8 and 10, the load sensor 9 and the lambda probe 7 are fed to an engine control 6.
  • the multi-cylinder internal combustion engine 1 is controlled or regulated by means of the engine control 6.
  • the signal ti controls the injector 11, the signal t 2 the injector 12, the signal t the injector 13 and the injection signal t 4 the injector 14.
  • the data connections between the engine control 6 and the injectors 11, 12 , 13, 14 not shown.
  • the signal x controls the inlet valve 21, the signal v 2 the inlet valve 22, the signal v 3 the inlet valve 23 and the signal v 4 the inlet valve 24.
  • the data connections between the engine control 6 and the inlet valves 21, 22, 23, 24 are not shown for reasons of clarity.
  • the inlet valves 21, 22, 23, 24 are, for. B. executed according to the intake valves according to DE 195 11 320 2.
  • each cylinder 61, 62, 63, 64 is assigned an intake valve 21, 22, 23, 24. However, the cylinders 61, 62, 63, 64 can each be assigned more than one inlet valve.
  • one or more cylinders can thus be operated by means of the control of the intake valves.
  • the inlet valves are closed. These cylinders do not participate in the combustion. The remaining cylinders take over the delivery of the moment and are operated at an unthrottled operating point. This results in an improved overall efficiency.
  • the inlet valves can be closed in order to reduce cooling of the catalytic converter, since the air flow is interrupted.
  • the motor controller 6 has an interface to a traction control system (ASR).
  • a setpoint torque M * is supplied to the engine control from the traction control system. Further details on a traction control system can, for. B. the article "FDR - die
  • FIG. 2 shows a flowchart which is implemented in an exemplary embodiment on the engine control 6 in FIG. 1.
  • a first step 30 the position of the accelerator pedal is determined and converted into a target torque M *.
  • n opt of the cylinders is determined, which is necessary to achieve the desired target torque M * when the cylinders are operated at their optimal operating point.
  • the optimum operating point is to be understood as the operating point at which the efficiency of the multi-cylinder internal combustion engine 1 is greatest.
  • n oU ⁇ cylinders which should not contribute to the performance of the multi-cylinder internal combustion engine 1 are selected with N is the number of cylinders 61, 62, 63, 64.
  • step 33 there is a step 33 in which n opt the cylinder of the multi-cylinder internal combustion engine be operated in such a sawn in conventional manner 1 that the multi-cylinder internal combustion engine 1 reaches the target torque M *.
  • Step 33 is followed by step 34, in which the discharge valves of (n out ) cylinders of the multi-cylinder internal combustion engine 1 are closed and in which no fuel is injected for the other (n out ) cylinders.
  • FIG. 3 shows a flow chart that is implemented in the exemplary embodiment on the motor controller 6 in FIG. 1.
  • a target torque M * is read in by a traction control system. Steps 31, 32, 33 and 34 follow, which correspond to steps 31, 32, 33 and 34 in FIG. 2.
  • FIG. 4 shows a flow chart for influencing the temperature of the catalytic converter 5. This flow chart is implemented on the engine control 6 in an exemplary embodiment.
  • the temperature u " ⁇ of the catalyst 5 is read in in a step 40.
  • no temperature sensor 3 is provided for measuring the temperature ⁇ " ⁇ of the catalyst 5.
  • the temperature t) ⁇ of the catalytic converter 5 is calculated in step 40 using a temperature model.
  • Step 40 is followed by a query 41, in which a query is made as to whether
  • a step 43 then follows.
  • a cylinder for example cylinder 61, is selected in which no ignition takes place.
  • fuel is added to the selected cylinder 61 by means of an injection nozzle 11.
  • the inlet valve 21 of the selected cylinder 61 is controlled in such a way that it admits air, in particular a maximum possible amount of air, to the selected cylinder 61.
  • the ratio of air (opening of the intake valve) and injection time can be adapted to the needs.
  • this can be regulated with the lambda probe 7.
  • the cylinder for air / fuel control can be exchanged in rotation in order to achieve better mixing. This procedure is preferably used after a cold start.
  • step 44 follows.
  • a cylinder e.g. Cylinder 61 selected, with no ignition. No fuel is added to the selected cylinder 61.
  • the inlet valve 21 of the selected cylinder 61 is controlled in such a way that it admitted air, in particular a maximum possible amount of air, into the selected cylinder 61.
  • a step 46 follows in which the multi-cylinder internal combustion engine 1 is operated in a conventional manner.
  • steps 30, 31, 32, 33 and 34 according to FIG. 2 or steps 35, 31, 32, 33 and 34 according to FIG. 3 take place in step 46.
  • Steps 43 and 44 are followed by a step 45 in which the unselected cylinders 62, 63, 64 are operated normally the.
  • the non-selected cylinders 62, 63, 64 in step 45 are analogous to steps 30, 31, 32, 33 and 34 according to FIG. 2 or steps 35, 31, 32, 33 and 34 3 are operated.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
  • Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Valve Device For Special Equipments (AREA)

Abstract

L'invention concerne une commande d'un moteur à combustion interne multicylindre comportant des soupapes d'admission commandables individuellement, au moins une soupape d'admission étant affectée à chaque cylindre du moteur à combustion interne multicylindre. Selon l'invention, les soupapes d'admission d'au moins deux cylindres sont commandées de manière que ces deux cylindres au moins délivrent une puissance différente.
EP00989784A 2000-01-05 2000-11-22 Commande d'un moteur a combustion interne multicylindre comportant des soupapes d'admission commandables individuellement Withdrawn EP1248898A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10000216 2000-01-05
DE10000216A DE10000216A1 (de) 2000-01-05 2000-01-05 Steuerung eines Mehrzylinder-Verbrennungsmotors mit individuell ansteuerbaren Einlaßventilen
PCT/DE2000/004120 WO2001049976A2 (fr) 2000-01-05 2000-11-22 Commande d'un moteur a combustion interne multicylindre comportant des soupapes d'admission commandables individuellement

Publications (1)

Publication Number Publication Date
EP1248898A2 true EP1248898A2 (fr) 2002-10-16

Family

ID=7626799

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00989784A Withdrawn EP1248898A2 (fr) 2000-01-05 2000-11-22 Commande d'un moteur a combustion interne multicylindre comportant des soupapes d'admission commandables individuellement

Country Status (3)

Country Link
EP (1) EP1248898A2 (fr)
DE (1) DE10000216A1 (fr)
WO (1) WO2001049976A2 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6308670B1 (en) * 2000-07-06 2001-10-30 Ford Global Tech., Inc. System and method for valve timing
EP2072788B1 (fr) 2007-12-21 2011-05-25 Ford Global Technologies, LLC Moteur et procédé de régénération d'un dispositif de traitement des gaz d'échappement dans un tel moteur

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4391095A (en) * 1981-07-02 1983-07-05 Texaco Inc. Internal combustion engine with exhaust filter rejuvenation
JPH0381542A (ja) * 1989-08-24 1991-04-05 Mazda Motor Corp エンジンの制御装置
US5205152A (en) * 1991-02-19 1993-04-27 Caterpillar Inc. Engine operation and testing using fully flexible valve and injection events
DE4141946C2 (de) 1991-12-19 2003-03-13 Bosch Gmbh Robert Verfahren und Vorrichtung zur Steuerung des Betriebs einer Sekundärluftpumpe
JP3733786B2 (ja) * 1999-05-21 2006-01-11 トヨタ自動車株式会社 電磁駆動弁を有する内燃機関

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0149976A2 *

Also Published As

Publication number Publication date
DE10000216A1 (de) 2001-07-12
WO2001049976A3 (fr) 2002-04-04
WO2001049976A2 (fr) 2001-07-12

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