EP1625293B8 - Method for switching off an internal combustion engine - Google Patents

Method for switching off an internal combustion engine

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Publication number
EP1625293B8
EP1625293B8 EP04725320A EP04725320A EP1625293B8 EP 1625293 B8 EP1625293 B8 EP 1625293B8 EP 04725320 A EP04725320 A EP 04725320A EP 04725320 A EP04725320 A EP 04725320A EP 1625293 B8 EP1625293 B8 EP 1625293B8
Authority
EP
European Patent Office
Prior art keywords
internal combustion
combustion engine
operating state
crankshaft
stopping
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.)
Expired - Fee Related
Application number
EP04725320A
Other languages
German (de)
French (fr)
Other versions
EP1625293B1 (en
EP1625293A1 (en
Inventor
Normann Freisinger
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.)
Mercedes Benz Group AG
Original Assignee
Daimler AG
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Filing date
Publication date
Application filed by Daimler AG filed Critical Daimler AG
Publication of EP1625293A1 publication Critical patent/EP1625293A1/en
Application granted granted Critical
Publication of EP1625293B1 publication Critical patent/EP1625293B1/en
Publication of EP1625293B8 publication Critical patent/EP1625293B8/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • F02D17/00—Controlling engines by cutting out individual cylinders; Rendering engines inoperative or idling
    • F02D17/04—Controlling engines by cutting out individual cylinders; Rendering engines inoperative or idling rendering engines inoperative or idling, e.g. caused by abnormal conditions
    • 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
    • F02D41/042—Introducing corrections for particular operating conditions for stopping the engine
    • 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
    • F02D41/009—Electrical control of supply of combustible mixture or its constituents using means for generating position or synchronisation signals
    • F02D2041/0095—Synchronisation of the cylinders during engine shutdown
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/0002—Controlling intake air
    • F02D41/0005—Controlling intake air during deceleration
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N11/00—Starting of engines by means of electric motors
    • F02N11/08—Circuits or control means specially adapted for starting of engines
    • F02N11/0814—Circuits or control means specially adapted for starting of engines comprising means for controlling automatic idle-start-stop
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N15/00—Other power-operated starting apparatus; Component parts, details, or accessories, not provided for in, or of interest apart from groups F02N5/00 - F02N13/00
    • F02N15/003—Starters comprising a brake mechanism
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N19/00—Starting aids for combustion engines, not otherwise provided for
    • F02N19/005—Aiding engine start by starting from a predetermined position, e.g. pre-positioning or reverse rotation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N19/00—Starting aids for combustion engines, not otherwise provided for
    • F02N19/005—Aiding engine start by starting from a predetermined position, e.g. pre-positioning or reverse rotation
    • F02N2019/008—Aiding engine start by starting from a predetermined position, e.g. pre-positioning or reverse rotation the engine being stopped in a particular position

Definitions

  • the invention relates to a method for stopping an internal combustion engine, in particular for a motor vehicle.
  • the stopping of an internal combustion engine of a motor vehicle is usually initiated by the driver with the ignition key.Thus, the fuel supply is interrupted by turning the ignition key, ie injection valves or injectors are no longer energized of the internal combustion engine is initiated by an engine control unit after certain conditions such as a vehicle speed of zero and an actuation of the brake of the motor vehicle are met.
  • the problem is that the actual present position of the internal combustion engine, ie the angular position of Crankshaft and the camshaft and thus the cylinder position are initially unknown. Only after the shafts of the internal combustion engine rotate, the associated sensors deliver evaluatable output signals from which the instantaneous angular position of the crankshaft and the camshaft can be determined.
  • crankshaft sensor wheel Only when certain engine-specific conditions are met and the reference mark of the crankshaft sensor wheel is detected, a synchronization can take place, in which the correct angular position of the crankshaft and camshaft is detected and in the case of which the correct cylinder positions are known.
  • the start time can vary considerably. There are particularly unfavorable and particularly favorable starting positions. In the worst case, for example, requires a 4-cylinder 4-stroke engine about 180 ° crankshaft longer for a start of the engine.
  • the direct start of an Otto internal combustion engine is only possible if the necessary for the direct start discharge position of the crankshaft is achieved by chance.
  • DE 198 58 992 AI describes a start / drive unit for an internal combustion engine of a motor vehicle, in which the actual starting process of the internal combustion engine precedes a StartGermanungsphase in which the starting conditions are detected with a closed clutch and a decision on the subsequent phase of operation is made.
  • a start clarification phase an internal combustion engine can be started without the usual starter.
  • DE 100 30 001 Al discloses a method for the controlled shutdown of a - internal combustion engine, in which the crankshaft is moved after completion of the discharge operation in the desired angular position;
  • DE 100 50 170 A1 describes a method in which, during the switching-off operation of the internal combustion engine, braking or driving means bring the crankshaft into a predetermined rest position.
  • crankshaft is actively positioned during the discharge process of the internal combustion engine, however, are only possible for certain, but not for all starting systems.
  • the inventive method is characterized by the fact that the internal combustion engine after the initiation of the shutdown, for example, by turning the ignition key or by the engine control unit in the stop-start operation of the motor vehicle, is turned off from a defined operating condition out.
  • the defined operating state is chosen such that a desired outlet position of the crankshaft is achieved.
  • the actual shutdown of the internal combustion engine is delayed after the time of initiation of the shutdown until a defined operating state of the internal combustion engine is reached. If the internal combustion engine is turned off from this defined operating state, then no active intervention in the discharge process is necessary, the crankshaft automatically reaches a desired discharge position, which corresponds to the most favorable starting position for a subsequent starting process of the internal combustion engine.
  • the defined operating state of the internal combustion engine can be determined by a specific rotational speed of the internal combustion engine, by a specific throttle position of the internal combustion engine, by a specific load of the generator and / or ancillaries, by a defined final injection and combustion in a specific cylinder of the internal combustion engine or by a combination of these Be given parameters.
  • the defined operating state for switching off the internal combustion engine varies depending on the type and structure of the internal combustion engine, but can be readily determined.
  • the defined operating state for stopping the internal combustion engine during operation of the internal combustion engine is further learned and optimized.
  • the outlet position of the crankshaft can be additionally controlled by an active influence of the outlet process. This happens For example, by changing the throttle position during the outlet orlauf, by changing the load in the belt drive during the discharge process (eg power steering pump, air conditioner, etc.), by actively braking the engine with the clutch of a downstream transmission and subsequent immediate opening of the clutch and the like.
  • an active influence of the outlet process For example, by changing the throttle position during the outlet orlauf, by changing the load in the belt drive during the discharge process (eg power steering pump, air conditioner, etc.), by actively braking the engine with the clutch of a downstream transmission and subsequent immediate opening of the clutch and the like.

Landscapes

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

Abstract

Disclosed is a method for switching off an internal combustion engine. According to the inventive method, the internal combustion is switched off from a defined operating state once the process for switching off said internal combustion engine is initiated. The defined operating state is selected in such a way that a desired deceleration position of the crankshaft is obtained. The invention can be used in motor vehicles, particularly passenger cars.

Description

Verfahren zum Abstellen einer Brennkraftmaschine Method for stopping an internal combustion engine
Die Erfindung betrifft ein Verfahren zum Abstellen einer Brennkraftmaschine, insbesondere für ein Kraftfahrzeug.The invention relates to a method for stopping an internal combustion engine, in particular for a motor vehicle.
Das Abstellen einer Brennkraftmaschine eines Kraftfahrzeugs" wird üblicherweise durch den Fahrer mit dem Zündschlüssel eingeleitet. In der Regel wird durch Drehen des Zündschlüssels die Kraftstoffversorgung unterbrochen, d.h. Einspritzventile bzw. Injektoren werden nicht mehr bestromt. Im Falle eines Stopp- Start-Betriebes wird das Abstellen der Brennkraftmaschine durch ein Motorsteuergerät eingeleitet, nachdem gewisse Bedingungen wie beispielsweise eine Fahrzeuggeschwindigkeit von Null und eine Betätigung der Bremse des Kraftfahrzeugs erfüllt sind.The stopping of an internal combustion engine of a motor vehicle "is usually initiated by the driver with the ignition key.Thus, the fuel supply is interrupted by turning the ignition key, ie injection valves or injectors are no longer energized of the internal combustion engine is initiated by an engine control unit after certain conditions such as a vehicle speed of zero and an actuation of the brake of the motor vehicle are met.
Beim Einschalten einer Brennkraftmaschine - durch Drehen des Zündschlüssels durch den Fahrer bzw. durch das Motorsteuergerät im Stopp-Start-Betrieb des Kraftfahrzeugs - mit elektronisch geregelter Zündung und/oder Einspritzung besteht das Problem, dass die tatsächlich vorliegende Lage der Brennkraftmaschine, d.h. die Winkellage der Kurbel- und der Nockenwelle und damit die Zylinderstellung zunächst nicht bekannt sind. Erst nachdem sich die Wellen der Brennkraftmaschine drehen, liefern die zugeordneten Sensoren auswertbare Ausgangssignale, aus denen die momentane Winkelstellung der Kurbel- und der Nockenwelle ermittelt werden kann. Erst wenn bestimmte motorspezifische Bedingungen erfüllt sind und die Bezugsmarke des Kurbelwellen- geberrades erkannt ist, kann eine Synchronisation erfolgen, bei der die korrekte Winkelstellung von Kurbel- und Nockenwelle erkannt wird und bei der damit auch die korrekten Zylinderstellungen bekannt sind.When turning on an internal combustion engine - by turning the ignition key by the driver or by the engine control unit in the stop-start operation of the motor vehicle - with electronically controlled ignition and / or injection, the problem is that the actual present position of the internal combustion engine, ie the angular position of Crankshaft and the camshaft and thus the cylinder position are initially unknown. Only after the shafts of the internal combustion engine rotate, the associated sensors deliver evaluatable output signals from which the instantaneous angular position of the crankshaft and the camshaft can be determined. Only when certain engine-specific conditions are met and the reference mark of the crankshaft sensor wheel is detected, a synchronization can take place, in which the correct angular position of the crankshaft and camshaft is detected and in the case of which the correct cylinder positions are known.
Beim Starten einer Brennkraftmaschine aus unterschiedlichen Positionen der Kurbelwelle kann die Startzeit erheblich variieren. Es gibt besonders ungünstige und besonders günstige Startpositionen. Im ungünstigsten Fall benötigt zum Beispiel ein 4-Zylinder-4-Takt-Motor etwa 180° Kurbelwelle länger für einen Start der Brennkraftmaschine. Der Direktstart einer Otto- Brennkraftmaschine ist nur dann möglich, wenn zufällig die für den Direktstart notwendige Auslaufposition der Kurbelwelle erreicht wird.When starting an internal combustion engine from different positions of the crankshaft, the start time can vary considerably. There are particularly unfavorable and particularly favorable starting positions. In the worst case, for example, requires a 4-cylinder 4-stroke engine about 180 ° crankshaft longer for a start of the engine. The direct start of an Otto internal combustion engine is only possible if the necessary for the direct start discharge position of the crankshaft is achieved by chance.
Zur Lösung dieser Problematik sind aus dem Stand der Technik bereits verschiedene Lösungsansätze bekannt.To solve this problem, various approaches are already known from the prior art.
So beschreibt zum Beispiel die DE 198 58 992 AI eine Start/ Antriebseinheit für eine Brennkraftmaschine eines Kraftfahrzeugs, bei der dem eigentlichen Startvorgang der Brennkraftmaschine eine Startklärungsphase vorausgeht, in der bei geschlossener Schaltkupplung die Startverhältnisse erfasst werden und eine Entscheidung über die nachfolgende Betriebsphase getroffen wird. Mittels dieser Startklärungsphase soll eine Brennkraftmaschine ohne den üblichen Starter gestartet werden können.Thus, for example, DE 198 58 992 AI describes a start / drive unit for an internal combustion engine of a motor vehicle, in which the actual starting process of the internal combustion engine precedes a Startklärungsphase in which the starting conditions are detected with a closed clutch and a decision on the subsequent phase of operation is made. By means of this start clarification phase, an internal combustion engine can be started without the usual starter.
Ein weiterer Ansatz zur Lösung des oben erläuterten Problems besteht in dem aktiven Positionieren der Kurbelwelle beim Abstellen der Brennkraftmaschine eines Kraftfahrzeugs. 'So sind zum Beispiel aus der DE 198 35 045 C2, der DE 199 36 885 C2 und der DE 199 60 984 AI verschiedene Verfahren zur aktiven AuslaufSteuerung einer Brennkraftmaschine bekannt, bei denen die Kurbelwelle in einer bestimmten Winkelstellung angehalten wird, die einer möglichst günstigen Startposition der Brennkraftmaschine entspricht. Das Anhalten der Kurbelwelle in einer bestimmten Winkelstellung erfolgt gemäß der DE 198 35 045 C2 zum Beispiel mittels eines Bremssystems, im Fall der DE 199 36 885 C2 mittels eines Elektromotors zur Erzeugung eines Bremsdrehmoments, und im Fall der DE 199 60 984 AI mittels einer Ansteuerung der Gasauslassventile.Another approach to solving the problem discussed above is to actively position the crankshaft when stopping the engine of a motor vehicle. 'Thus, for example, from DE 198 35 045 C2, DE 199 36 885 C2 and DE 199 60 984 AI, various methods for active discharge controlling an internal combustion engine in which the crankshaft is stopped in a certain angular position, the favorable one possible Start position of the internal combustion engine corresponds. The stopping of the crankshaft in a certain angular position takes place according to DE 198 35 045 C2, for example by means of a brake system, in the case of DE 199 36 885 C2 by means of an electric motor for generating a braking torque, and in the case of DE 199 60 984 AI by means of a control of the gas outlet valves.
Alternativ ist es auch möglich, die Kurbelwelle während oder nach dem Auslaufvorgang der Brennkraftmaschine in eine gewünschte Winkelstellung zu bewegen. Die DE 100 30 001 AI offenbart ein Verfahren zum kontrollierten Abstellen einer - Brennkraftmaschine, bei dem die Kurbelwelle nach Beendigung des Auslaufvorgangs in die gewünschte Winkelstellung bewegt wird; die DE 100 50 170 AI beschreibt ein Verfahren, bei dem während des Abschaltvorgangs der Brennkraftmaschine bremsende oder antreibende Mittel die Kurbelwelle in eine vorbestimmte Ruhelage bringen.Alternatively, it is also possible to move the crankshaft during or after the discharge of the internal combustion engine in a desired angular position. DE 100 30 001 Al discloses a method for the controlled shutdown of a - internal combustion engine, in which the crankshaft is moved after completion of the discharge operation in the desired angular position; DE 100 50 170 A1 describes a method in which, during the switching-off operation of the internal combustion engine, braking or driving means bring the crankshaft into a predetermined rest position.
Derartige Verfahren, bei denen die Kurbelwelle während des Auslaufvorgangs der Brennkraftmaschine aktiv positioniert wird, sind allerdings nur bei bestimmten, nicht aber bei allen Startsystemen möglich.Such methods, in which the crankshaft is actively positioned during the discharge process of the internal combustion engine, however, are only possible for certain, but not for all starting systems.
Der Vollständigkeit halber wird auch auf die DE 197 35 455 Cl verwiesen, die ein Verfahren offenbart, bei dem zum Reduzieren von Abgasemissionen aktiv in den Abstellvorgang einer Brennkraftmaschine eingegriffen wird. Dieser aktive Eingriff in den Abstellvorgang hat jedoch keinen unmittelbaren Einfluss auf die Auslaufposition der Kurbelwelle.For the sake of completeness, reference is also made to DE 197 35 455 C1, which discloses a method in which the emission process of an internal combustion engine is actively intervened to reduce exhaust emissions. However, this active intervention in the shut-off process has no direct influence on the outlet position of the crankshaft.
Ausgehend von dem vorgenannten Stand der Technik ist es eine Aufgabe der vorliegenden Erfindung, ein Verfahren zum Abstellen einer Brennkraftmaschine bereitzustellen, mit dem die Startzeit eines anschließenden Startvorgangs der Brennkraftmaschine unabhängig vom Startsystem deutlich reduziert werden kann.Based on the aforementioned prior art, it is an object of the present invention to provide a method for stopping an internal combustion engine, with which the starting time of a subsequent starting operation of the internal combustion engine can be significantly reduced independently of the starting system.
Diese Aufgabe wird durch ein Verfahren zum Abstellen einer Brennkraftmaschine mit den Merkmalen des Anspruchs 1 gelöst. Das erfindungsgemäße Verfahren zeichnet sich dadurch aus, dass die Brennkraftmaschine nach dem Einleiten des Abstellvorgangs, z.B. durch Drehen des Zündschlüssels oder durch das Motorsteuergerät im Stopp-Start-Betrieb des Kraftfahrzeugs, aus einem definierten Betriebszustand heraus abgestellt wird. Der definierte Betriebszustand ist dabei derart gewählt, dass eine gewünschte Auslaufposition der Kurbelwelle erreicht wird. Bei einem bekannten Auslaufverhalten der Brennkraftmaschine wird somit der eigentliche Abstellvorgang der Brennkraftmaschine nach dem Zeitpunkt des Einleitens des Abstellvorgangs verzögert, bis ein definierter Betriebszustand der Brennkraftmaschine erreicht ist. Wird die Brennkraftmaschine aus diesem definierten Betriebszustand heraus abgestellt, so ist anschließend kein aktiver Eingriff in den Auslaufvorgang notwendig, die Kurbelwelle erreicht automatisch eine gewünschte Auslaufposition, die einer möglichst günstigen Startposition für einen anschließenden Startvorgang der Brennkraftmaschine entspricht.This object is achieved by a method for stopping an internal combustion engine with the features of claim 1. The inventive method is characterized by the fact that the internal combustion engine after the initiation of the shutdown, for example, by turning the ignition key or by the engine control unit in the stop-start operation of the motor vehicle, is turned off from a defined operating condition out. The defined operating state is chosen such that a desired outlet position of the crankshaft is achieved. In a known discharge behavior of the internal combustion engine thus the actual shutdown of the internal combustion engine is delayed after the time of initiation of the shutdown until a defined operating state of the internal combustion engine is reached. If the internal combustion engine is turned off from this defined operating state, then no active intervention in the discharge process is necessary, the crankshaft automatically reaches a desired discharge position, which corresponds to the most favorable starting position for a subsequent starting process of the internal combustion engine.
Der definierte Betriebszustand der Brennkraftmaschine kann durch eine bestimmte Drehzahl der Brennkraftmaschine, durch eine bestimmte Drosselklappenstellung der Brennkraftmaschine, durch eine bestimmte Belastung der Lichtmaschine und/oder der Nebenaggregate, durch eine definierte letzte Einspritzung und Verbrennung in einem bestimmten Zylinder der Brennkraftmaschine oder durch eine Kombination dieser Parameter gegeben sein. Der definierte Betriebszustand zum Abstellen der Brennkraftmaschine variiert je nach Art und Aufbau der Brennkraftmaschine, kann jedoch ohne weiteres ermittelt werden.The defined operating state of the internal combustion engine can be determined by a specific rotational speed of the internal combustion engine, by a specific throttle position of the internal combustion engine, by a specific load of the generator and / or ancillaries, by a defined final injection and combustion in a specific cylinder of the internal combustion engine or by a combination of these Be given parameters. The defined operating state for switching off the internal combustion engine varies depending on the type and structure of the internal combustion engine, but can be readily determined.
In einer weiteren Ausgestaltung der Erfindung wird der definierte Betriebszustand zum Abstellen der Brennkraftmaschine im Betrieb der Brennkraftmaschine weiter gelernt und optimiert.In a further embodiment of the invention, the defined operating state for stopping the internal combustion engine during operation of the internal combustion engine is further learned and optimized.
In einer weiteren Ausgestaltung der Erfindung kann die Auslaufposition der Kurbelwelle zusätzlich durch eine aktive Beeinflussung des Auslaufvorgangs gesteuert werden. Dies geschieht beispielsweise durch Verandern der Drosselklappenstellung wahrend des Auslauf organgs, durch Verandern der Last im Riementrieb wahrend des Auslaufvorgangs (z.B. Lenkhilfpumpe, Klimagerat, usw.), durch aktives Bremsen der Brennkraftmaschine mit der Kupplung eines nachgeschalteten Getriebes und anschließendem sofortigen Offnen der Kupplung und dergleichen.In a further embodiment of the invention, the outlet position of the crankshaft can be additionally controlled by an active influence of the outlet process. this happens For example, by changing the throttle position during the outlet orlauf, by changing the load in the belt drive during the discharge process (eg power steering pump, air conditioner, etc.), by actively braking the engine with the clutch of a downstream transmission and subsequent immediate opening of the clutch and the like.
Ferner ist es von Vorteil, die Bremsen des Kraftfahrzeugs wahrend des Auslaufvorgangs der Brennkraftmaschine anzusteuern, um eine Bewegung des Kraftfahrzeugs und damit eine unerwünschte Veränderung der Winkelstellung der Kurbelwelle der Brennkraftmaschine zu verhindern.Furthermore, it is advantageous to control the brakes of the motor vehicle during the discharge process of the internal combustion engine in order to prevent a movement of the motor vehicle and thus an undesirable change in the angular position of the crankshaft of the internal combustion engine.
Mit dem oben beschriebenen und in den anhangenden Ansprüchen definierten Verfahren zum Abstellen einer Brennkraftmaschine ist es unabhängig vom Startsystem der Brennkraftmaschine auf einfache Weise und ohne aktiven Eingriff in die Positionierung der Kurbelwelle der Brennkraftmaschine möglich, eine für einen anschließenden Startvorgang der Brennkraftmaschine möglichst gunstige Auslaufposition der Kurbelwelle zu erzielen. Anstatt von nicht-definierten Bedingungen beim Abstellen der Brennkraftmaschine, die eine grundsatzlich beliebige Auslaufposition der Kurbelwelle zur Folge haben, wird bei dem erfindungsgemaßen Verfahren die Brennkraftmaschine aus einem definierten Betriebszustand heraus abgestellt, der eine bestimmte Auslaufposition der Kurbelwelle zur Folge hat. Zu diesem Zweck muss nur das Auslaufverhalten der Brennkraftmaschine bekannt sein, welches im laufenden Betrieb der Brennkraftmaschine weiter zur Optimierung des Verfahrens gelernt werden kann. With the above-described and defined in the appended claims method for stopping an internal combustion engine, it is independent of the starting system of the internal combustion engine in a simple manner and without active intervention in the positioning of the crankshaft of the internal combustion engine possible, a possible for a subsequent starting process of the internal combustion engine most favorable discharge position of the crankshaft to achieve. Instead of non-defined conditions when switching off the internal combustion engine, which have a basically any outlet position of the crankshaft result, the internal combustion engine is turned off from a defined operating condition in the inventive method, which has a certain outlet position of the crankshaft result. For this purpose, only the run-out behavior of the internal combustion engine must be known, which can be further learned during operation of the internal combustion engine to optimize the process.

Claims

Patentansprüche claims
1. Verfahren zum Abstellen einer Brennkraftmaschine, d a d u r c h g e k e n n z e i c h n e t, dass die Brennkraftmaschine nach dem Einleiten des Abstellvorgangs aus einem definierten Betriebszustand heraus abgestellt wird, wobei der definierte Betriebszustand derart gewählt ist, dass eine gewünschte Auslaufposition der Kurbelwelle erreicht wird.1. A method for stopping an internal combustion engine, the internal combustion engine is switched off after the initiation of the shutdown process from a defined operating state, wherein the defined operating state is selected such that a desired outlet position of the crankshaft is achieved.
2. Verfahren zum Abstellen einer Brennkraftmaschine nach Anspruch 1, d a d u r c h g e k e n n z e i c h n e t, dass der definierte Betriebszustand durch eine bestimmte2. A method for shutting down an internal combustion engine according to claim 1, wherein a defined operating state is determined by a specific operating state
Drehzahl der Brennkraftmaschine gegeben ist.Speed of the internal combustion engine is given.
3. Verfahren zum Abstellen einer Brennkraftmaschine nach Anspruch 1 oder 2, d a d u r c h g e k e n n z e i c h n e t, dass der definierte Betriebszustand durch eine bestimmte3. A method for parking an internal combustion engine according to claim 1 or 2, d a d u c h e c e n e z e c h e n e that the defined operating state by a certain
Drosselklappenstellung der Brennkraftmaschine gegeben ist.Throttle valve position of the internal combustion engine is given.
4. Verfahren zum Abstellen einer Brennkraftmaschine nach einem der Ansprüche 1 bis 3, d a d u r c h g e k e n n z e i c h n e t, dass der definierte Betriebszustand durch eine bestimmte Belastung der Lichtmaschine und/oder der Nebenaggregate gegeben ist. 4. A method for stopping an internal combustion engine according to one of claims 1 to 3, characterized in that the defined operating state is given by a specific load on the alternator and / or the ancillaries.
5. Verfahren zum Abstellen einer Brennkraftmaschine nach einem der Ansprüche 1 bis 4, d a d u r c h g e k e n n z e i c h n e t, dass der definierte Betriebszustand durch eine definierte letzte Einspritzung und Verbrennung in einem bestimmten Zylinder der Brennkraftmaschine gegeben ist.5. A method for stopping an internal combustion engine according to one of claims 1 to 4, d a d u r c h e g e c e n e c e in that the defined operating state is given by a defined last injection and combustion in a particular cylinder of the internal combustion engine.
6. Verfahren zum Abstellen einer Brennkraftmaschine nach einem der Ansprüche 1 bis 5, d a d u r c h g e k e n n z e i c h n e t, dass der definierte Betriebszustand zum Abstellen der6. A method for shutting down an internal combustion engine according to one of claims 1 to 5, characterized in that the defined operating state for switching off the
Brennkraftmaschine gelernt und optimiert wird.Internal combustion engine is learned and optimized.
7. Verfahren zum Abstellen einer Brennkraftmaschine nach einem der Ansprüche 1 bis 6, d a d u r c h g e k e n n z e i c h n e t, dass die Auslaufposition der Kurbelwelle durch Verändern der Drosselklappenstellung während des Auslaufvorgangs beeinflusst wird.7. A method for shutting down an internal combustion engine according to one of claims 1 to 6, characterized in that the outlet position of the crankshaft is influenced by changing the throttle position during the outlet process.
8. Verfahren zum Abstellen einer Brennkraftmaschine nach einem der Ansprüche 1 bis 7, d a d u r c h g e k e n n z e i c h n e t, dass die Auslaufposition der Kurbelwelle durch Verändern der Last im Riementrieb während des Auslaufvorgangs beeinflusst wird.8. A method for stopping an internal combustion engine according to any one of claims 1 to 7, d a d u r c h e c e n e c e s in that the outlet position of the crankshaft is influenced by changing the load in the belt drive during the outlet process.
9. Verfahren zum Abstellen einer Brennkraftmaschine nach einem der Ansprüche 1 bis 8, d a d u r c h g e k e n n z e i c h n e t, dass die Auslaufposition der Kurbelwelle durch aktives Bremsen der Brennkraftmaschine mit der Kupplung eines nachgeschalteten Getriebes beeinflusst wird.9. A method for stopping an internal combustion engine according to any one of claims 1 to 8, d a d u c h e c e n e c e s in that the outlet position of the crankshaft is influenced by active braking of the internal combustion engine with the clutch of a downstream transmission.
10. Verfahren zum Abstellen einer Brennkraftmaschine nach einem der Ansprüche 1 bis 9, d a d u r c h g e k e n n z e i c h n e t, dass während des Auslaufvorgangs der Brennkraftmaschine die Bremsen des Kraftfahrzeugs angesteuert werden, um eine Bewegung des Kraftfahrzeugs zu verhindern. 10. A method for stopping an internal combustion engine according to one of claims 1 to 9, characterized in that the brakes of the motor vehicle are actuated during the discharge process of the internal combustion engine in order to prevent a movement of the motor vehicle.
EP04725320A 2003-05-17 2004-04-02 Method for switching off an internal combustion engine Expired - Fee Related EP1625293B8 (en)

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DE10322305A DE10322305A1 (en) 2003-05-17 2003-05-17 Method for stopping an internal combustion engine
PCT/EP2004/003523 WO2004101976A1 (en) 2003-05-17 2004-04-02 Method for switching off an internal combustion engine

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EP1625293A1 EP1625293A1 (en) 2006-02-15
EP1625293B1 EP1625293B1 (en) 2007-11-21
EP1625293B8 true EP1625293B8 (en) 2008-01-23

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EP (1) EP1625293B8 (en)
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WO (1) WO2004101976A1 (en)

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DE10322305A1 (en) 2004-12-02
US20060065223A1 (en) 2006-03-30
JP2007503549A (en) 2007-02-22
WO2004101976A1 (en) 2004-11-25
US7527580B2 (en) 2009-05-05
EP1625293B1 (en) 2007-11-21
EP1625293A1 (en) 2006-02-15
DE502004005564D1 (en) 2008-01-03

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