EP1022459B1 - Method used at starting of an vehicle engine - Google Patents

Method used at starting of an vehicle engine Download PDF

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Publication number
EP1022459B1
EP1022459B1 EP99125192A EP99125192A EP1022459B1 EP 1022459 B1 EP1022459 B1 EP 1022459B1 EP 99125192 A EP99125192 A EP 99125192A EP 99125192 A EP99125192 A EP 99125192A EP 1022459 B1 EP1022459 B1 EP 1022459B1
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EP
European Patent Office
Prior art keywords
vehicle
brake
starting
engine
vehicle brake
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Expired - Lifetime
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EP99125192A
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German (de)
French (fr)
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EP1022459A1 (en
Inventor
Willibald Birzl
Matthias Herger
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Bayerische Motoren Werke AG
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Bayerische Motoren Werke AG
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02NSTARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
    • F02N11/00Starting of engines by means of electric motors
    • F02N11/10Safety devices

Definitions

  • the invention relates to a method for starting the engine of a vehicle according to the preamble of claim 1.
  • the Rolling resistance when switching off the engine often the first gear automatically inserted This state must be canceled when starting the vehicle be otherwise an unintentional movement of the vehicle would be done.
  • the driver must first make sure that the neutral setting selected or the drive train is interrupted. Is not this the case, he must first select the neutral position or the drive train to interrupt. If he does not carry out this step, he can Engine cannot be started for safety reasons. He takes this step however, he often has to use the service brake to start the engine press to secure the vehicle against rolling away.
  • DE 196 32 863 A1 describes a motor vehicle with a parking brake known in which, depending on the vehicle operating state, a hydraulic or electro-mechanical operating mode can be selected.
  • a hydraulic or electro-mechanical operating mode can be selected.
  • the vehicle brake is used when using the vehicle hydraulic mode and after leaving by means of the electromechanical Mode operated.
  • a decision to switch can be made based on a door control, a driver seat occupancy detection or one Ignition activation is recognized. An automatic actuation of a however, the brake not previously operated is not described.
  • DE 196 29 426 A1 is an automated parking brake described in which the parking brake at the end of driving is actuated automatically. On the other hand, when driving starts the parking brake released again.
  • the object of the present invention is to provide a simple method for increasing driving safety and ease of use when starting an engine specify.
  • An essential essence of the invention is that an upcoming tempering of the engine is recognized. This is followed by starting the engine the vehicle brake released at first for securely locking the vehicle actuated via external force.
  • the upcoming starting of the vehicle can be done, for example, via the Unlocking the vehicle, opening the vehicle door, driver seat occupancy detection and / or an actuation of the ignition lock or the Ignition / starter determination can be determined.
  • the actuation of a Starter or ignition device is particularly closely connected to one impending engine start.
  • the Invention first check whether the gear selector is neutral is posed. If this is not the case, the gear selection device can be used starting the engine to neutral or the drivetrain be decoupled. For example, when turning the ignition key to the "ignition on” position the vehicle brake is applied and the clutch be opened. This is special for a vehicle with one automated manual transmission is an advantage, as an additional safety function first gear is engaged when the engine is switched off.
  • Solving the Vehicle braking may be in response to the actuation of a pedal, for example an accelerator pedal or a brake pedal.
  • the vehicle brake is actuated - as in the preamble of the claim 1 specified - about external power; d. H. the one for the vehicle brake brake pressure to be applied or the braking energy - depending on whether electrically, pneumatically or hydraulically operated - must have a corresponding Secondary device are generated in the vehicle.
  • a preferred embodiment of the invention is therefore characterized in that that the vehicle brake is released again after a certain time after activating the vehicle brake no engine start is done.
  • a parking brake can also be applied with respect to the parking brake that only requires energy itself, the parking brake after actuation, however, like the conventional handbrake is kept in a locked state.
  • the present invention is an inexpensive, simple, Safety and comfort increasing procedure for starting the engine of a vehicle.
  • the ease of use is an inexpensive, simple, Safety and comfort increasing procedure for starting the engine of a vehicle.
  • Vehicle start increases without the driver taking additional actions before Must start the vehicle. Moreover, safety is through avoidance incorrect operation and rolling away of the vehicle when starting of the vehicle.
  • a vehicle brake is a prerequisite for performing the procedure, which can be operated via external force.
  • Such vehicle brakes are in the Most of today's vehicles are in the form of brake control systems.
  • Sufficient hydraulic pressure is usually provided by a separate pump provided for a hydraulic brake circuit and this hydraulic pressure according to the braking requirements via valves modulated.
  • any other can also be operated via external power Vehicle brake, for example a purely electric brake become.
  • a remote control signal be evaluated to unlock or release the vehicle door. It is also possible to evaluate the door opening switch.
  • the present procedure checks whether the ignition key is in the start position ("Ignition On" position) was turned. If this is the case, then a Corresponding signal passed on to a control unit, which on a imminent engine start closes (step 10).
  • the service brake is then automatically activated in step 12.
  • the present method is used in a vehicle with automated Manual transmission used, the first when parking the vehicle Gear is engaged. For this reason, in step 12 after the automatic Activating the service brake automatically opens the clutch. Alternatively, the neutral gear could also be engaged.
  • step 16 the internal combustion engine is started in step 16, which is due to the previous measures cannot lead to immediate movement of the vehicle.
  • the service brake is in step 18 solved when any pedal of the vehicle, for example that Accelerator pedal or the brake pedal is operated. By pressing one These pedals signal the driver that he is in a ready to drive state and is in control of the vehicle.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Regulating Braking Force (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)

Description

Die Erfindung betrifft ein Verfahren beim Anlassen des Motors eines Fahrzeugs gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a method for starting the engine of a vehicle according to the preamble of claim 1.

Bei Fahrzeugen mit automatisierten Schaltgetrieben wird zur Erhöhung des Wegrollwiderstandes beim Abstellen des Motors oftmals der erste Gang automatisch eingelegt Dieser Zustand muß beim Starten des Fahrzeugs aufgehoben werden, da sonst eine unbeabsichtigte Bewegung des Fahrzeugs erfolgen würde. Der Fahrer muß dabei zunächst sicherstellen, ob die Neutralsteftung angewählt oder der Antriebsstrang unterbrochen ist. Ist dies nicht der Fall, so hat er zunächst die Neutralstellung anzuwählen bzw. den Antriebsstrang zu unterbrechen. Führt er diesen Schritt nicht aus, so kann der Motor aus Sicherheitsgründen nicht gestartet werden. Führt er diesen Schritt jedoch aus, so muß er zum Starten des Motors oftmals die Betriebsbremse betätigen, um das Fahrzeug gegen wegrollen zu sichern.In vehicles with automated manual transmissions, the Rolling resistance when switching off the engine often the first gear automatically inserted This state must be canceled when starting the vehicle be otherwise an unintentional movement of the vehicle would be done. The driver must first make sure that the neutral setting selected or the drive train is interrupted. Is not this the case, he must first select the neutral position or the drive train to interrupt. If he does not carry out this step, he can Engine cannot be started for safety reasons. He takes this step however, he often has to use the service brake to start the engine press to secure the vehicle against rolling away.

Aus der DE 196 32 863 A1 ist ein Kraftfahrzeug mit einer Feststellbremse bekannt, bei der je nach Fahrzeug-Betriebszustand ein hydraulischer oder elekromechanischer Betätigungsmodus gewählt werden kann. Beispielsweise wird die Fahrzeugbremse bei der Nutzung des Fahrzeugs mittels dem hydraulischen Modus und nach dem Verlassen mittels dem elektromechanischen Modus betrieben. Eine Entscheidung für eine Umschaltung kann aufgrund einer Türbetätigung, einer Fahrersitzbelegungserkennung oder einer Erkennung der Zündaktivierung erfolgen. Eine automatische Betätigung einer vorher nicht betätigten Bremse ist jedoch nicht beschrieben.DE 196 32 863 A1 describes a motor vehicle with a parking brake known in which, depending on the vehicle operating state, a hydraulic or electro-mechanical operating mode can be selected. For example the vehicle brake is used when using the vehicle hydraulic mode and after leaving by means of the electromechanical Mode operated. A decision to switch can be made based on a door control, a driver seat occupancy detection or one Ignition activation is recognized. An automatic actuation of a however, the brake not previously operated is not described.

In der DE 196 29 426 A1 hingegen ist eine automatisierte Feststellbremse beschrieben, bei der nach dem Ende des Fahrbetriebs die Feststellbremse automatisch betätigt wird. Bei der Aufnahme des Fahrbetriebs hingegen wird die Feststellbremse wieder gelöst.In DE 196 29 426 A1, however, is an automated parking brake described in which the parking brake at the end of driving is actuated automatically. On the other hand, when driving starts the parking brake released again.

Der Fall, bei der ein Fahrzeug während des Abgestelltseins nicht mit einer Fahrzeugbremse, insbesondere einer Feststellbremse, gesichert ist, bei dem aber trotzdem ein sicheres Anfahren gewährleistet werden soll, kann durch obige Vorrichtungen und Verfahren jedoch nicht gelöst werden.The case where a vehicle does not have a Vehicle brake, in particular a parking brake, is secured in the but still a safe start can be guaranteed by However, the above devices and methods cannot be solved.

Aufgabe der vorliegenden Erfindung ist es, ein einfaches Verfahren zur Erhöhung der Fahrsicherheit und des Bedienkomforts beim Starten eines Motors anzugeben.The object of the present invention is to provide a simple method for increasing driving safety and ease of use when starting an engine specify.

Diese Aufgabe wird durch die im Anspruch 1 genannten Merkmale gelöst.This object is achieved by the features mentioned in claim 1.

Ein wesentlicher Kern der Erfindung ist, daß ein bevorstehendes Anlassen des Motors erkannt wird. Darauffolgend wird vor dem Anlassen des Motors die zunächst gelöste Fahrzeugbremse zum sicheren Feststellen des Fahrzeugs über Fremdkraft betätigt.An essential essence of the invention is that an upcoming tempering of the engine is recognized. This is followed by starting the engine the vehicle brake released at first for securely locking the vehicle actuated via external force.

Durch die automatische Betätigung der Fahrzeugbremse, insbesondere der Feststellbremse, vor dem Starten des Motors wird das Fahrzeug während des Startvorgangs - also bis ein Fahrwunsch erkannt wird - gegen Wegrollen gesichert. Diese Maßnahme läßt sich besonders vorteilhaft auch bei Automatikgetrieben mit Wandlern anwenden, da dann beim Starten des Motors auch eine Vorwärts- oder Rückwärtsfahrstufe eingelegt sein kann, wodurch eine gewisse Kriechneigung auftritt.By automatically actuating the vehicle brake, in particular the Parking brake, before starting the engine the vehicle is during the starting process - i.e. until a driving request is recognized - against rolling away secured. This measure can also be used particularly advantageously in automatic transmissions use with converters, because then when starting the engine a forward or reverse gear can also be engaged, whereby a certain tendency to creep occurs.

Das bevorstehende Anlassen des Fahrzeugs kann beispielsweise über das Aufschließen des Fahrzeugs, das Öffnen der Fahrzeugtür, eine Fahrersitzbelegungserkennung und/oder eine Betätigung des Zündschlosses oder der Zünd-/Startermittlung ermittelt werden. Insbesondere die Betätigung einer Anlaß- oder Zündvorrichtung steht in besonders enger Verbindung zu einem bevorstehenden Motorstart.The upcoming starting of the vehicle can be done, for example, via the Unlocking the vehicle, opening the vehicle door, driver seat occupancy detection and / or an actuation of the ignition lock or the Ignition / starter determination can be determined. In particular, the actuation of a Starter or ignition device is particularly closely connected to one impending engine start.

Bei automatisierten Schaltgetrieben besteht zudem die Gefahr, daß - insbesondere bei rastenden Wählhebein - eine andere Fahrstufe als die eingelegte angezeigt wird. So kann es möglich sein, daß bei einem Fahrzeug beim Öffnen der Fahrertür automatisch die neutrale Stufe eingelegt werden. Möchte der Fahrer dann weiterfahren, so muß er zunächst die aktuell angezeigte Fahrstufe verlassen und diese oder eine andere Fahrstufe neu anwählen. Dies führt allgemein zur Verwirrung und ist unkomfortabel.With automated manual transmissions there is also the risk that - in particular when the selector lever is engaged - a different speed level than the one selected is shown. So it may be possible that in a vehicle When the driver's door is opened, the neutral level is automatically inserted. If the driver then wants to continue driving, he must first display the currently displayed one Leave the speed level and select this or another speed level. This generally leads to confusion and is uncomfortable.

Um dies zu vermeiden kann gemäß einer besonderen Ausführungsform der Erfindung zunächst überprüft werden, ob die Gangwahlvorrichtung auf neutral gestellt ist. Ist dies nicht der Fall, so kann die Gangwahlvorrichtung vor dem Anlassen des Motors auf neutral gestellt oder aber der Antriebsstrang entkoppelt werden. Beispielsweise könnte beim Drehen des Zündschlüssels auf die "Zündung Ein"-Position die Fahrzeugbremse betätigt und die Kupplung geöffnet werden. Dies ist besondere bei einem Fahrzeug mit einem automatisierten Schaltgetriebe von Vorteil, bei dem als zusätzliche Sicherheitsfunktion beim Abstellen des Motors der erste Gang eingelegt wird. To avoid this, according to a particular embodiment, the Invention first check whether the gear selector is neutral is posed. If this is not the case, the gear selection device can be used starting the engine to neutral or the drivetrain be decoupled. For example, when turning the ignition key to the "ignition on" position the vehicle brake is applied and the clutch be opened. This is special for a vehicle with one automated manual transmission is an advantage, as an additional safety function first gear is engaged when the engine is switched off.

Gemäß einer weiteren vorteilhaften Ausführungsform der Erfindung wird die Fahrzeugbremse nach dem Anlassen des Motors gelöst. Das Lösen der Fahrzeugbremse kann als Reaktion auf die Betätigung eines Pedals, beispielsweise eines Fahrpedals oder eines Bremspedals, erfolgen.According to a further advantageous embodiment of the invention, the Vehicle brake released after starting the engine. Solving the Vehicle braking may be in response to the actuation of a pedal, for example an accelerator pedal or a brake pedal.

Die Betätigung der Fahrzeugbremse erfolgt - wie im Oberbegriff des Anspruchs 1 angegeben - über Fremdkraft; d. h. der für die Fahrzeugbremse aufzubringende Bremsdruck oder die Bremsenergie - abhängig davon ob elektrisch, pneumatisch oder hydraulisch betätigt - muß über eine entsprechende Sekundäreinrichtung im Fahrzeug erzeugt werden. Dies erfordert bereits vor dem Anlassen des Motors Energie, die nur aus einer Batterie bereitgestellt werden kann. Aus diesem Grunde ist es ratsam, eine Betriebsbremse nicht über zu lange Zeit ohne einen Motorbetrieb aktiviert zu lassen. Eine bevorzugte Ausführungsform der Erfindung ist daher dadurch gekennzeichnet, daß die Fahrzeugbremse dann wieder gelöst wird, wenn nach einer bestimmten Zeitspanne nach Aktivieren der Fahrzeugbremse kein Motorstart erfolgt ist. Alternativ kann auch eine Feststellbremse betätigt werden, bezüglich der lediglich der Betätigungsvorgang selbst Energie erfordert, die Feststellbremse nach der Betätigung jedoch wie die herkömmliche Handbremse in einem verrasteten Zustand gehalten wird. In diesem Zusammenhang wird auf die DE 196 32 863 A1 hingewiesen.The vehicle brake is actuated - as in the preamble of the claim 1 specified - about external power; d. H. the one for the vehicle brake brake pressure to be applied or the braking energy - depending on whether electrically, pneumatically or hydraulically operated - must have a corresponding Secondary device are generated in the vehicle. This requires Even before starting the engine, energy is provided only from a battery can be. For this reason, it is advisable to use a service brake not to be left active for too long without engine operation. A preferred embodiment of the invention is therefore characterized in that that the vehicle brake is released again after a certain time after activating the vehicle brake no engine start is done. Alternatively, a parking brake can also be applied with respect to the parking brake that only requires energy itself, the parking brake after actuation, however, like the conventional handbrake is kept in a locked state. In this context referred to DE 196 32 863 A1.

Bezüglich einer Bewegung des Fahrzeugs ohne Motorkraft (Schieben, Abschleppen, Werkstattaufenthalt etc.) kann es ferner erforderlich sein, die Betätigung der Betriebsbremse - evtl. manuell - außer Kraft zu setzen, um eben ein Bewegen des Fahrzeugs in bestimmten Situationen zu ermöglichen.Regarding movement of the vehicle without engine power (pushing, towing, Stay in the workshop etc.) may also be necessary Activate the service brake - possibly manually - to override to allow the vehicle to move in certain situations.

Insgesamt ist mit der vorliegenden Erfindung ein kostengünstiges, einfaches, sicherheits- und komforterhöhendes Verfahren zum Anlassen des Motors eines Fahrzeugs angegeben. Insbesondere wird der Bedienkomfort beim Overall, the present invention is an inexpensive, simple, Safety and comfort increasing procedure for starting the engine of a vehicle. In particular, the ease of use

Fahrzeugstart erhöht, ohne daß der Fahrer zusätzliche Aktionen vor dem Fahrzeugstart durchführen muß. Überdies ist die Sicherheit durch Vermeidung von Fehlbedienungen und Wegrollen des Fahrzeugs beim Anlassen des Fahrzeugs immer gegeben.Vehicle start increases without the driver taking additional actions before Must start the vehicle. Moreover, safety is through avoidance incorrect operation and rolling away of the vehicle when starting of the vehicle.

Ein sehr einfaches Ausführungsbeispiel des erfindungsgemäßen Verfahrens wird anhand eines Ausführungsbeispiels und mit Bezug auf die einzige beiliegende Zeichnung näher erläutert. Die Zeichnung zeigt ein Ablaufdiagramm eines erfindungsgemäßen Verfahrens.A very simple embodiment of the method according to the invention is based on an embodiment and with reference to the only enclosed Drawing explained in more detail. The drawing shows a flow chart of a method according to the invention.

Voraussetzung zur Durchführung des Verfahrens ist eine Fahrzeugbremse, die über Fremdkraft betätigbar ist. Solche Fahrzeugbremsen sind in den meisten der heutigen Fahrzeugen in Form von Bremsregelsystemen vorhanden. Dabei wird zumeist über eine separate Pumpe ein ausreichender Hydraulikdruck für einen hydraulischen Bremskreis zur Verfügung gestellt und dieser Hydraulikdruck entsprechend den Bremsanforderungen über Ventile moduliert. Natürlich kann auch jede andere über Fremdkraft betätigbare Fahrzeugbremse, beispielsweise eine rein elektrische Bremse verwendet werden.A vehicle brake is a prerequisite for performing the procedure, which can be operated via external force. Such vehicle brakes are in the Most of today's vehicles are in the form of brake control systems. Sufficient hydraulic pressure is usually provided by a separate pump provided for a hydraulic brake circuit and this hydraulic pressure according to the braking requirements via valves modulated. Of course, any other can also be operated via external power Vehicle brake, for example a purely electric brake become.

Ferner ist es erforderlich, Sensoren auszuwerten, die einen bevorstehenden Motorstart angeben. Beispielsweise kann dabei ein Fembedienungssignal zum Aufschließen oder Freigeben der Fahrzeugtür ausgewertet werden. Überdies ist es auch möglich, den Türöffnungsschalter auszuwerten. Beim vorliegenden Verfahren wird überprüft, ob der Zündschlüssel in die Startposition ("Zündung-Ein"-Position) gedreht wurde. Ist dies der Fall, so wird ein entsprechendes Signal an ein Steuergerät weitergegeben, welches auf einen bevorstehenden Start des Motors schließt (Schritt 10).Furthermore, it is necessary to evaluate sensors that an upcoming Specify engine start. For example, a remote control signal be evaluated to unlock or release the vehicle door. It is also possible to evaluate the door opening switch. At the The present procedure checks whether the ignition key is in the start position ("Ignition On" position) was turned. If this is the case, then a Corresponding signal passed on to a control unit, which on a imminent engine start closes (step 10).

Im Anschluß daran wird in Schritt 12 die Betriebsbremse automatisch aktiviert. The service brake is then automatically activated in step 12.

Das vorliegende Verfahren wird bei einem Fahrzeug mit automatisiertem Schaltgetriebe eingesetzt, bei dem beim Abstellen des Fahrzeugs der erste Gang eingelegt wird. Aus diesem Grunde wird in Schritt 12 nach dem automatischen Aktivieren der Betriebsbremse die Kupplung automatisch geöffnet. Alternativ könnte auch der neutrale Gang eingelegt werden.The present method is used in a vehicle with automated Manual transmission used, the first when parking the vehicle Gear is engaged. For this reason, in step 12 after the automatic Activating the service brake automatically opens the clutch. Alternatively, the neutral gear could also be engaged.

Nach diesem Verfahrensschritt erfolgt nun in Schritt 16 der Start des Verbrennungsmotors, welcher aufgrund der vorangegangenen Maßnahmen nicht zu einer unmittelbaren Bewegung des Fahrzeugs führen kann.After this process step, the internal combustion engine is started in step 16, which is due to the previous measures cannot lead to immediate movement of the vehicle.

Nach dem Start des Verbrennungsmotors wird die Betriebsbremse in Schritt 18 dann gelöst, wenn irgendein Pedal des Fahrzeugs, beispielsweise das Fahrpedal oder das Bremspedal betätigt wird. Durch die Betätigung eines dieser Pedale signalisiert der Fahrer, daß er in einem fahrbereiten Zustand ist und die Kontrolle über das Fahrzeug besitzt.After starting the internal combustion engine, the service brake is in step 18 solved when any pedal of the vehicle, for example that Accelerator pedal or the brake pedal is operated. By pressing one These pedals signal the driver that he is in a ready to drive state and is in control of the vehicle.

Claims (7)

  1. A method for starting the engine of a vehicle with an automated or automatic drive and a vehicle brake which can be activated by means of external force,
    characterised in that,
    circumstances are detected which indicate the previous starting of the motor, and,
    that the vehicle brake, especially the operating brake or the parking brake, is operated before the motor is started for the secure immobilisation of the vehicle against external force.
  2. A method according to claim 1,
    characterised in that,
    previous starting is detected by the opening of the vehicle, the opening of the driver door, the detection of the occupancy of the driver's seat and/or the activation of the ignition lock or the ignition/starting device.
  3. A method according to claim 1 or claim 2,
    characterised in that,
    a test is made as to whether the gear selecting device has been set to neutral and - in the event that this is not the case - the gear selector device is set to neutral or the drive train is decoupled.
  4. A method according to one of the claims 1 to 3,
    characterised in that,
    the vehicle brake is released following the starting of the motor.
  5. A method according to claim 4,
    characterised in that,
    the release of the vehicle brake occurs only after the operation of a pedal.
  6. A method according to one of the foregoing claims,
    characterised in that,
    the vehicle brake is then released again if following a certain period of time after the activation of the vehicle brake no motor start has occurred.
  7. A method according to one of the foregoing claims,
    characterised in that
    the operation of the parking brake manually is prevented.
EP99125192A 1999-01-23 1999-12-17 Method used at starting of an vehicle engine Expired - Lifetime EP1022459B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19902638A DE19902638A1 (en) 1999-01-23 1999-01-23 Procedure for starting the engine of a vehicle
DE19902638 1999-01-23

Publications (2)

Publication Number Publication Date
EP1022459A1 EP1022459A1 (en) 2000-07-26
EP1022459B1 true EP1022459B1 (en) 2004-02-25

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EP (1) EP1022459B1 (en)
DE (2) DE19902638A1 (en)
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DE19632863B4 (en) * 1996-08-14 2007-10-18 Bayerische Motoren Werke Ag Motor vehicle with a parking brake system

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DE59908645D1 (en) 2004-04-01
EP1022459A1 (en) 2000-07-26
DE19902638A1 (en) 2000-07-27
US6384490B1 (en) 2002-05-07
ES2214803T3 (en) 2004-09-16

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