WO1999002833A1 - Procede pour la commande optimisee de moteurs a combustion interne - Google Patents

Procede pour la commande optimisee de moteurs a combustion interne Download PDF

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Publication number
WO1999002833A1
WO1999002833A1 PCT/DE1998/001862 DE9801862W WO9902833A1 WO 1999002833 A1 WO1999002833 A1 WO 1999002833A1 DE 9801862 W DE9801862 W DE 9801862W WO 9902833 A1 WO9902833 A1 WO 9902833A1
Authority
WO
WIPO (PCT)
Prior art keywords
engine
control
maps
internal combustion
motor
Prior art date
Application number
PCT/DE1998/001862
Other languages
German (de)
English (en)
Inventor
Cornel Stan
Jürgen GRABNER
Original Assignee
Forschungs- Und Transferzentrum E.V. An Der Westsächs. Hochschule Zwickau
Ibw Ing.-Büro Wünschel Elektronik 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 Forschungs- Und Transferzentrum E.V. An Der Westsächs. Hochschule Zwickau, Ibw Ing.-Büro Wünschel Elektronik Gmbh filed Critical Forschungs- Und Transferzentrum E.V. An Der Westsächs. Hochschule Zwickau
Publication of WO1999002833A1 publication Critical patent/WO1999002833A1/fr

Links

Classifications

    • 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
    • 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
    • F02D41/1401—Introducing closed-loop corrections characterised by the control or regulation method
    • F02D41/1406—Introducing closed-loop corrections characterised by the control or regulation method with use of a optimisation method, e.g. iteration

Definitions

  • the invention relates to a method for the optimized control of internal combustion engines by calculating control measures as a function of the regular comparison of the current operating state with engine maps. Such a method is required in particular for the control of internal combustion engines if they can be used under changing environmental conditions.
  • control devices For the control of modern internal combustion engines, control devices are used that use engine maps that are stored in memory modules to derive specifications for selected engine control variables.
  • the engine manufacturers determine these characteristic maps for engine operation under standardized operating conditions and, if necessary, also for various requirement characteristics.
  • the memory modules used for a specific engine type are equipped with a uniform content and are available for engine management in the form of read-only memories. This complies with the cost-effective manufacture of the control units, but is in conflict with the knowledge that the optimized control is not only dependent on characteristic engine parameters, but also on important environmental conditions. This limits the effective use of performance characteristics not only when the engine is used under recognized extreme operating conditions, but also when the engines are used regularly under environmental factors that deviate from the standard conditions.
  • the technical means for the application of the method should not go much beyond the usual technical effort.
  • the object is achieved essentially by the characterizing features of claim 1. According to this, it is provided that the respective control measures are calculated as a function of the regular comparison of the current operating state with the content of engine characteristic maps, the parameters of the engine characteristic maps being varied depending on the current status characteristic data of the engine and other information about the ambient conditions influencing the engine operation.
  • the updated engine maps are always available for the electronic control unit of the respective engine.
  • the specific control measures are determined for important influencing variables of the engine operation in each case as a function of current information about the operating state and of the engine maps determined for specific application characteristics.
  • the engine maps to be used for the engine control are varied not only taking into account the current status data of the engine but also the other information about the ambient conditions influencing the engine operation. According to the proposal, this is done via calculation processes which, if necessary, are carried out by the manufacturer, by authorized workshops or by the respective control unit itself. In this way, updated engine maps are available to the control device for the internal combustion engine, from which the necessary control measures for important influencing variables of engine operation can be derived.
  • control measures for the influencing variables composition, metering quantity, admission pressure and temperature of the fuel and for the influencing variable ignition timing are preferably determined.
  • data of the ambient conditions such as air pressure, outside temperature and air humidity
  • data of the request characteristics such as starting condition, vehicle acceleration or deceleration, city travel and cruise control operation, as further information for determining the engine maps to be used.
  • the maps, corrected taking into account the engine, environmental and requirement data, are preferably provided by the control unit of the respective internal combustion engine itself.
  • the corrected characteristic maps required to be configured by the manufacturer in accordance with the specific place of use of the vehicle and to be stored in the control unit of the internal combustion engine.
  • re-programmable memory modules are used for storing the engine maps in the respective control units as a storage medium for the provision of the engine maps.
  • the microcomputer of the control unit itself triggers the saving of the engine maps intended for the specific application.
  • the recalculation of parameters of the engine map and the saving of the updated engine map to a read-write memory are performed as an additional task by the microcomputer of the control unit for the engine control.
  • the map updated regularly by qualified service centers instead of dynamically adapting the maps to the current operating and operating conditions.
  • the manufacturer can also adapt the maps required for the engine control to the specific operating and operating conditions.
  • an additional computer module is used for the recalculation of parameters of the engine map in the control unit of the internal combustion engine.
  • the corrected characteristic maps are read into the read / write memory of the control unit for the internal combustion engine from an external data carrier.
  • the control unit has a corresponding data interface.
  • the intermediate memory is designed as a reprogrammable memory module, while the engine maps provided by the manufacturer remain unchanged on a read-only memory. This can be helpful, for example, for engine diagnostics purposes.
  • the information on the current requirement characteristics are preselected as standardized requirement states, the selection of the characteristic diagrams depending on the required driving style being able to be consumption-optimized, performance-optimized and / or pollution-reducing.
  • the advantages of the invention are, in summary, to significantly improve the utility properties of modern internal combustion engines with relatively low technical and logistical expenditure.
  • this improvement in efficiency can be achieved by using optimal Mü ⁇ oelekfronikbauchen the optimal operation of internal combustion engines not only under standardized operating conditions assumed as statically but also under the respective specific operating conditions, which can temporarily or permanently deviate significantly from assumed standard conditions.
  • the control electronics by specifying the required control algorithm, is given the ability to calculate the corrected characteristic maps themselves, taking into account the known engine characteristics and the environmental characteristics to be measured, insofar as they are essential for engine operation.
  • This proposed solution of a dynamic map correction as an essential prerequisite for the optimized control of internal combustion engines at the same time supports the efforts to concentrate the production of consumer goods in locations with the most favorable manufacturing conditions and yet to enable the optimized use of these goods worldwide.
  • Fig. 1 the schematic representation of the control unit of a
  • An internal combustion engine is equipped with a control unit 1, which has the following
  • Components are:
  • the central microcomputer module 4 is connected to transducers 2, which in turn are connected to sensors for detecting the operating and ambient conditions
  • Control unit 1 usually also contains a component 3
  • control unit 1 has a pulse generator 5 and one
  • control unit 1 In addition to a read-only memory as a map memory 6, the control unit 1 also contains a reprogrammable memory module as a buffer 7.
  • control unit 1 has output stages 8 with which the
  • the microcomputer 4 accesses those in the map memory
  • Buffer 7 is stored and until a new characteristic diagram the basis for the derivation of control information by the
  • Microcomputer 4 forms.
  • the calculated tax information is from
  • Microcomputer 4 via the output stages 8 to the adjusting mechanisms of the
  • the microcomputer 4 ensures that there is a constant dynamic update of the im
  • control signals required for engine operation are calculated at any time on the basis of an engine map corrected to the required extent.
  • the microcomputer also has an interface 9 in
  • Map information can be accessed.
  • the interface 9 also serves for reading in externally updated data
  • control algorithms to be used can also be corrected via the interface 9.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)

Abstract

L'invention vise à créer un procédé pour la commande optimisée de moteurs à combustion interne qui permette l'exploitation efficace du moteur en utilisant les réserves de puissance et de longévité existantes tout en garantissant, le cas échéant, une usure minimisée. A cet effet, on calcule les mesures de commande en fonction de la comparaison régulière entre état de fonctionnement actuel et contenu des courbes de puissance et couple du moteur, en faisant varier les paramètres des courbes de puissance et couple du moteur en fonction des données d'état caractéristiques actuelles du moteur et en fonction d'autres informations sur les conditions ambiantes influençant le fonctionnement du moteur. Les courbes de puissance et couple du moteur actualisées sont constamment mises à disposition de l'appareil de commande électronique du moteur concerné. L'invention concerne donc un procédé de commande optimisée de moteurs à combustion interne par le calcul de mesures de commande en fonction de la comparaison régulière entre état de fonctionnement actuel et courbes de puissance et couple du moteur. Un tel procédé est tout particulièrement nécessaire pour la commande de moteurs à combustion interne utilisés dans des conditions ambiantes changeantes.
PCT/DE1998/001862 1997-07-09 1998-07-05 Procede pour la commande optimisee de moteurs a combustion interne WO1999002833A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1997129212 DE19729212C2 (de) 1997-07-09 1997-07-09 Verfahren zur optimierten Steuerung von Verbrennungsmotoren
DE19729212.7 1997-07-09

Publications (1)

Publication Number Publication Date
WO1999002833A1 true WO1999002833A1 (fr) 1999-01-21

Family

ID=7835054

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE1998/001862 WO1999002833A1 (fr) 1997-07-09 1998-07-05 Procede pour la commande optimisee de moteurs a combustion interne

Country Status (2)

Country Link
DE (1) DE19729212C2 (fr)
WO (1) WO1999002833A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004051759A1 (de) * 2004-10-23 2006-04-27 Daimlerchrysler Ag Integration eines Fahrzeugmodells mit Echtzeitaktualisierung

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19932155B4 (de) * 1999-07-13 2005-12-29 Forschungs- und Transferzentrum eV an der Westsächsischen Hochschule Zwickau Verfahren zur optimierten Steuerung von Antriebseinheiten für Fahrzeuge mit Verbrennungskraftmaschinen
DE10120943B4 (de) * 2001-04-20 2005-02-10 Wittenstein Ag Verfahren zur Bestimmung der Auslegung und zur Optimierung der Lebensdauer
DE102013200318B4 (de) 2013-01-11 2019-04-04 Ford Global Technologies, Llc Verfahren und Vorrichtung zur Verbrauchsoptimierung eines Antriebsstrangs eines Fahrzeugs
DE102014115033A1 (de) 2014-07-18 2016-01-21 Deon Group AG Elektromotorisch verstellbare Stützeinrichtung
DE102014115126A1 (de) 2014-07-18 2016-01-21 Deon Group AG Elektromotorisch verstellbare Stützeinrichtung
DE102014115039A1 (de) 2014-07-18 2016-01-21 Deon Group AG Ausrückungsverfahren zur Ausrückung eines Möbelantriebs

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EP0265078A2 (fr) * 1986-10-21 1988-04-27 Japan Electronic Control Systems Co., Ltd. Appareil adaptatif de commande de rapport air/carburant dans un moteur à combustion interne
EP0286103A2 (fr) * 1987-04-08 1988-10-12 Hitachi, Ltd. Système de contrôle pour des conditions de travail déterminées d'un moteur à combustion interne
US5162997A (en) * 1990-01-23 1992-11-10 Nissan Motor Company, Limited Control system for automotive vehicle for controlling vehicle driving behavior with feature of harmonization of vehicular driving condition dependent control and driver's driving tendency adapted control
US5284116A (en) * 1988-07-29 1994-02-08 North American Philips Corporation Vehicle management computer
EP0766024A2 (fr) * 1995-09-29 1997-04-02 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Système de commande de changement de vitesse pour transmission automatique des véhicules automobiles avec une commande électronique

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Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0265078A2 (fr) * 1986-10-21 1988-04-27 Japan Electronic Control Systems Co., Ltd. Appareil adaptatif de commande de rapport air/carburant dans un moteur à combustion interne
EP0286103A2 (fr) * 1987-04-08 1988-10-12 Hitachi, Ltd. Système de contrôle pour des conditions de travail déterminées d'un moteur à combustion interne
US5284116A (en) * 1988-07-29 1994-02-08 North American Philips Corporation Vehicle management computer
US5162997A (en) * 1990-01-23 1992-11-10 Nissan Motor Company, Limited Control system for automotive vehicle for controlling vehicle driving behavior with feature of harmonization of vehicular driving condition dependent control and driver's driving tendency adapted control
EP0766024A2 (fr) * 1995-09-29 1997-04-02 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Système de commande de changement de vitesse pour transmission automatique des véhicules automobiles avec une commande électronique

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004051759A1 (de) * 2004-10-23 2006-04-27 Daimlerchrysler Ag Integration eines Fahrzeugmodells mit Echtzeitaktualisierung

Also Published As

Publication number Publication date
DE19729212A1 (de) 1999-01-14
DE19729212C2 (de) 2002-01-24

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