DE19507622A1 - Control of car engine braking during freewheel phase - Google Patents
Control of car engine braking during freewheel phaseInfo
- Publication number
- DE19507622A1 DE19507622A1 DE19507622A DE19507622A DE19507622A1 DE 19507622 A1 DE19507622 A1 DE 19507622A1 DE 19507622 A DE19507622 A DE 19507622A DE 19507622 A DE19507622 A DE 19507622A DE 19507622 A1 DE19507622 A1 DE 19507622A1
- Authority
- DE
- Germany
- Prior art keywords
- engine
- internal combustion
- combustion engine
- brake
- driving
- 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.)
- Granted
Links
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K23/00—Arrangement or mounting of control devices for vehicle transmissions, or parts thereof, not otherwise provided for
- B60K23/06—Arrangement or mounting of control devices for vehicle transmissions, or parts thereof, not otherwise provided for for freewheel devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/58—Combined or convertible systems
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/02—Conjoint control of vehicle sub-units of different type or different function including control of driveline clutches
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/18—Conjoint control of vehicle sub-units of different type or different function including control of braking systems
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units, or advanced driver assistance systems for ensuring comfort, stability and safety or drive control systems for propelling or retarding the vehicle
- B60W30/18—Propelling the vehicle
- B60W30/18009—Propelling the vehicle related to particular drive situations
- B60W30/18018—Start-stop drive, e.g. in a traffic jam
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units, or advanced driver assistance systems for ensuring comfort, stability and safety or drive control systems for propelling or retarding the vehicle
- B60W30/18—Propelling the vehicle
- B60W30/1819—Propulsion control with control means using analogue circuits, relays or mechanical links
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units, or advanced driver assistance systems for ensuring comfort, stability and safety or drive control systems for propelling or retarding the vehicle
- B60W30/18—Propelling the vehicle
- B60W30/18009—Propelling the vehicle related to particular drive situations
- B60W30/18072—Coasting
- B60W2030/1809—Without torque flow between driveshaft and engine, e.g. with clutch disengaged or transmission in neutral
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2540/00—Input parameters relating to occupants
- B60W2540/12—Brake pedal position
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/14—Inputs being a function of torque or torque demand
- F16H59/18—Inputs being a function of torque or torque demand dependent on the position of the accelerator pedal
- F16H59/22—Idle position
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H59/00—Control inputs to control units of change-speed-, or reversing-gearings for conveying rotary motion
- F16H59/50—Inputs being a function of the status of the machine, e.g. position of doors or safety belts
- F16H59/54—Inputs being a function of the status of the machine, e.g. position of doors or safety belts dependent on signals from the brakes, e.g. parking brakes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/21—Providing engine brake control
Abstract
Description
Die Erfindung betrifft ein Verfahren und eine Antriebsanordnung zur Steuerung des Motorbremsbetriebes eines Kraftfahrzeuges ge mäß dem Oberbegriff des Patentanspruchs 1, bei dem in sogenann ten Schubbetriebsphasen oder Schwungnutzphasen die Brennkraft maschine vom Antriebsstrang abgekoppelt und stillgelegt wird.The invention relates to a method and a drive arrangement to control the engine brake operation of a motor vehicle ge according to the preamble of claim 1, in which in so-called ten overrun phases or swing useful phases machine is decoupled from the drive train and shut down.
Aus der deutschen Patentanmeldung P 43 34 210.8 ist beispiels weise bekannt geworden, daß der Antriebsmotor am Ende einer Schwungnutzphase durch den Fahrer aktiviert werden kann. Dies geschieht in der Regel durch eine Betätigung des Gangwahlhebels oder des Fahrpedals sowie durch ein Überschreiten eines be stimmten Auslenkwinkels und/oder einer bestimmten Verstellge schwindigkeit des Fahrpedalhebels. Sind diese Signalwerte von einer Steuerungselektronik erfaßt worden, so wird die Brenn kraftmaschine gestartet und durch Einrücken der Trennkupplung in den Antriebsstrang eingekuppelt.From German patent application P 43 34 210.8 is an example became known that the drive motor at the end of a Swing utilization phase can be activated by the driver. This usually happens by operating the gear selector lever or the accelerator pedal and by exceeding a be agreed deflection angle and / or a certain adjustment accelerator pedal speed. Are these signal values from control electronics have been detected, so the burning engine started and by engaging the clutch engaged in the drive train.
Zudem ist aus der Zeitschrift mot Auto Technik Zukunft Nr. 23, 1992 bekannt geworden, daß sich die Brennkraftmaschine zur Durchführung eines Motorbremsbetriebes mittels einer Taste an einem Schaltstock des Kraftfahrzeuges manuell starten und in den Antriebsstrang einkuppeln läßt. Dieser im Hinblick auf den Kraftstoffverbrauch und das Emissionsverhalten des Kraftfahr zeuges ungünstigere Betriebsfall wird von dem Fahrer eines der artigen Kraftfahrzeuges in der Regel dann gewünscht, wenn bei spielsweise bei Bergabfahrten durch die Bremswirkung der einge kuppelten und arbeitenden Brennkraftmaschine die Radbremsen des Kraftfahrzeuges geschont werden können.In addition, from the magazine mot Auto Technik Zukunft No. 23, 1992 it became known that the internal combustion engine for Execution of an engine brake operation using a button manually start a switch stick of the motor vehicle and in can engage the drive train. This with regard to the Fuel consumption and the emission behavior of motor vehicles The driver is one of the worst case like motor vehicle usually desired when at for example when driving downhill due to the braking effect of the coupled and working internal combustion engine the wheel brakes of the Motor vehicle can be spared.
Die an sich vorteilhafte Freilauffunktion von Fahrzeugen mit der aus dieser Zeitschrift bekannten "Schwungnutz-Automatik" wirkt sich aber bei einigen Betriebssituationen nachteilig auf die Fahreigenschaften des Kraftfahrzeuges aus. Insbesondere beim Bremsen in sich engerziehenden Kurvenstrecken, z. B. bei Autobahn-Ausfahrten, neigen derartige Fahrzeuge insbesondere bei ungeübten Fahrern dazu, wegen der fehlenden und sonst die Fahrzeugverzögerung unterstützenden Motorbremswirkung nach vor ne hinaus zu schieben. Da in derartigen Fahrsituationen der Kraftfahrer in der Regel das Fahrpedal nicht auslenkt und seine Aufmerksamkeit verstärkt den Straßen- und Umgebungsverhältnis sen widmet, ist eine Aktivierung und Einkupplung der Brenn kraftmaschine über den bekannten Lenkradstock unvorteilhaft.The advantageous freewheel function of vehicles with the "Schwungnutz-Automatik" known from this magazine however, adversely affects some operating situations the driving characteristics of the motor vehicle. Especially when braking in tight corners, z. B. at Motorway exits, such vehicles tend in particular inexperienced drivers, because of the missing and otherwise the Engine braking effect supporting vehicle deceleration after to push it out. Since in such driving situations Motorists usually do not deflect the accelerator pedal and its Attention strengthens the road and environment dedicated to activation and engagement of the burner Engine disadvantageous over the known steering wheel stick.
Die Aufgabe der Erfindung ist es daher, ein Verfahren und eine Antriebsanordnung zur Steuerung des Motorbremsbetriebes bei ei nem derartigen Kraftfahrzeug mit Freilauf-Funktion vorzustel len.The object of the invention is therefore a method and Drive arrangement for controlling the engine brake operation at ei To introduce such a motor vehicle with a freewheel function len.
Die verfahrensgemäße Lösung zu dieser Aufgabe ergibt sich aus den Merkmalen des Patentanspruchs 1, während die erfindungsge mäße Antriebsanordnung durch die Merkmale des Patentanspruchs 6 gekennzeichnet ist. Vorteilhafte Weiterbildung und Ausgestal tungen des Steuerungsverfahrens ergeben sich aus den Unteran sprüchen.The procedural solution to this task results from the features of claim 1, while the fiction moderate drive arrangement by the features of claim 6 is marked. Advantageous further education and training The control procedure results from the subordinate statements sayings.
Der Erfindung liegt die Erkenntnis zugrunde, daß die Freilauf-Funk tion, also das Stillsetzen der Brennkraftmaschine und ihr Abkuppeln aus dem Antriebsstrang, bei Bremsvorgängen generell nicht notwendig ist. Demzufolge soll die Motorbremse bei Betä tigung des Bremspedals konsequent zugeschaltet werden. Eine Bremsunterstützung durch den Motor ist somit stets vorhanden, wodurch die Fahreigenschaften des Kraftfahrzeuges während der Bremsvorgänge verbessert und das mechanische Rad-Brems-System geschont würde. Dabei ist das Wiederanlassen des Motors dabei nicht zwingend notwendig, da dieser auch im Schleppbetrieb eine Bremswirkung erzielt.The invention is based on the finding that the freewheel radio tion, so the shutdown of the internal combustion engine and you Uncoupling from the drive train, in general when braking is not necessary. Accordingly, the engine brake should be at Betä brake pedal activation systematically. A Brake support by the engine is always available, whereby the driving characteristics of the motor vehicle during the Braking improved and the mechanical wheel-brake system would be spared. The engine is restarted not absolutely necessary, as this is also a towing operation Braking effect achieved.
Erfindungsgemäß wird daher vorgeschlagen, daß Kraftfahrzeuge mit Freilauf-Funktionen derart betrieben werden, daß die Schub betriebsphase mit stillgelegter und abgekuppelter Brennkraft maschine immer dann durch Starten der Brennkraftmaschine und Einrücken der Kupplung automatisch beendet und damit eine Mo torbremsphase eingeleitet wird, wenn während der Fahrt bei nicht ausgelenktem Fahrpedal und nicht betätigtem Gangwahlhebel die Fahrbremse betätigt wird. Die Betätigung der Fahrbremse wird dem Steuerungsrechner vorzugsweise über einen Bremssensor am Bremspedal im Kraftfahrzeug mitgeteilt.According to the invention it is therefore proposed that motor vehicles be operated with freewheel functions such that the thrust operating phase with decommissioned and decoupled internal combustion machine by starting the internal combustion engine and Engagement of the clutch ends automatically and thus a mo gate braking phase is initiated when while driving at undeflected accelerator pedal and gear lever not operated the driving brake is applied. The application of the driving brake the control computer is preferably via a brake sensor communicated on the brake pedal in the motor vehicle.
Zudem kann vorgesehen sein, daß der gewünschte Motorbremseffekt allein durch Einkuppeln der Brennkraftmaschine erreicht wird, die dann bei abgeschalteter Kraftstoffversorgung im Schleppbe trieb betrieben wird.It can also be provided that the desired engine braking effect is achieved solely by engaging the internal combustion engine, which then with the fuel supply switched off in tow drive is operated.
Da durchaus Betriebssituationen denkbar sind, in denen in einer antriebslosen Freilaufphase eine kurzzeitige Abbremsung auch unter Zuhilfenahme des Motorbremseffektes gewünscht wird, kann zudem vorgesehen werden, daß die Brennkraftmaschine immer dann erneut gestartet und bzw. nur in den Antriebsstrang eingekup pelt wird, wenn eine bestimmte vorgewählte Fahrgeschwindigkeit unterschritten wird.Since operating situations are quite conceivable in which one drive-free freewheeling phase also a brief braking with the help of the engine braking effect may be desired also be provided that the internal combustion engine always then restarted and / or only coupled into the drive train pelt when a certain preselected driving speed is undercut.
Als vorteilhafte Ausgestaltung der Erfindung wird außerdem an gesehen, daß während der Fahrt bei nichtausgelegtem Fahrpedal, bei nichtbetätigten Gangwahlhebel und nach dem Zurückstellen des Bremspedals in die Position der Nichtauslenkung nach Ablauf eines vorbestimmten Zeitraumes die Kupplung erneut ausgerückt und die Brennkraftmaschine stillgesetzt wird. Auf diese Weise kann die durch einen kurzen Bremsvorgang unterbrochene Frei laufphase fortgesetzt werden.As an advantageous embodiment of the invention is also on seen that while driving with the accelerator pedal not when the gear selector lever is not actuated and after resetting the brake pedal to the non-deflection position after expiration the clutch disengaged again a predetermined period of time and the internal combustion engine is stopped. In this way can the free interrupted by a short braking run phase to be continued.
Eine Antriebsanordnung zur Durchführung dieses Steuerungsver fahrens weist demnach eine Brennkraftmaschine auf, die über ei ne automatisch betätigbare Kupplung mit einem Schaltgetriebe verbindbar ist. Zudem ist ein Anlasser für die Brennkraftma schine und ein Steuerungscomputer zur Verarbeitung von Sensor signalen vorgesehen, mit dem die Betätigung der Kupplung steu erbar ist. Schließlich weist die Antriebsanordnung einen Sensor zur Ermittlung des Auslenkzustandes des Fahrpedals so wie einen Sensor zur Ermittlung des Fahrerwunsches an dem Gangwahlhebel des Kraftfahrzeuges und einen Schalter zur manuellen Einleitung des Motorbremsbetriebes auf. Erfindungsgemäß ist zudem ein Sen sor an der Fahrbremse, vorzugsweise am Bremspedal des Kraft fahrzeuges vorgesehen, der über eine Signalleitung mit dem Steuerungscomputer verbunden ist.A drive arrangement for performing this Steuerver Fahrens accordingly has an internal combustion engine that via egg ne automatic clutch with a manual transmission is connectable. It is also a starter for internal combustion machine and a control computer for processing the sensor signals provided with which the actuation of the clutch control is noticeable. Finally, the drive arrangement has a sensor to determine the deflection state of the accelerator pedal such as one Sensor for determining the driver's request on the gear selector lever of the motor vehicle and a switch for manual initiation of engine braking operation. According to the invention is also a Sen sor on the driving brake, preferably on the brake pedal of the power Vehicle provided, which via a signal line with the Control computer is connected.
Das hier vorgestellte Steuerungsverfahren sowie die zugehörige Antriebsanordnung lassen sich mit Hilfe einer der Beschreibung beigefügten Zeichnung erläutern. In dieser Zeichnung ist mit 1 eine Brennkraftmaschine bezeichnet, die über eine automatisch schaltbare Kupplung 3 mit einem Schaltgetriebe 2 verbunden ist. Zum Starten der Brennkraftmaschine ist zudem ein Anlasser 14 vorgesehen, der sein Aktivierungssignal von einem Steuerungs computer 10 erhält.The control method presented here and the associated drive arrangement can be explained with the aid of a drawing attached to the description. In this drawing, 1 denotes an internal combustion engine which is connected to a manual transmission 2 via an automatically switchable clutch 3 . To start the internal combustion engine, a starter 14 is also provided, which receives its activation signal from a control computer 10 .
Die Kupplung 3 ist über eine Kupplungsservo 4 betätigbar, der in diesem Ausführungsbeispiel pneumatisch betrieben wird. Dazu ist ein Unterdruckspeicher 5 vorgesehen, der über eine Pumpe 6 evakuierbar ist. Der Kupplungsservo 4 wird zur Betätigung der Kupplung 3 von dem Steuerungscomputer 10 aktiviert.The clutch 3 can be actuated via a clutch servo 4 , which is operated pneumatically in this exemplary embodiment. For this purpose, a vacuum reservoir 5 is provided, which can be evacuated via a pump 6 . The clutch servo 4 is activated by the control computer 10 to actuate the clutch 3 .
Die hier vorgestellte Antriebsanordnung enthält auch einen Gangwahlhebel 7, der mit dem Schaltgetriebe 2 über eine mecha nische oder elektrische Stelleinrichtung verbunden ist. An dem Gangwahlhebel ist zudem ein Schalthebelsensor 15 vorgesehen, der immer dann dem Steuerungscomputer den Schaltwunsch des Fah rers signalisiert, wenn der Schalthebel um einen bestimmten Be trag aus seiner Null-Auslenkungsposition bewegt wird.The drive arrangement presented here also contains a gear selector lever 7 , which is connected to the manual transmission 2 via a mechanical or electrical actuating device. On the gear selector lever, a shift lever sensor 15 is also provided, which always signals the shift request of the driver to the control computer when the shift lever is moved by a certain amount from its zero deflection position.
Desweiteren verfügt diese Antriebsanordnung über einen Fahrpe dal 8, an dem ein Fahrpedalsensor 12 angeordnet ist. Mit diesem Sensor 12 läßt sich der Auslenkungszustand und die Stellge schwindigkeit des Fahrpedals sensieren und an den Steuerungs computer 10 weiterleiten.Furthermore, this drive arrangement has a Fahrpe dal 8 , on which an accelerator pedal sensor 12 is arranged. With this sensor 12 , the deflection state and the Stellge speed of the accelerator pedal can be sensed and forwarded to the control computer 10 .
Zur Unterbrechung der Freilaufphase des Fahrzeuges ist ein aus dem Stand der Technik bekannter Handschalter 11 im Kraftfahr zeug angeordnet, mit dem der Fahrer den Abbruch der Freilauf phase und damit den Motorbremsbetrieb gezielt dem Steuerungs computer signalisieren kann.To interrupt the free-running phase of the vehicle, a hand switch 11 known from the prior art is arranged in the motor vehicle, with which the driver can signal the termination of the free-running phase and thus the engine braking operation to the control computer in a targeted manner.
Schließlich ist erfindungsgemäß ein Bremssensor 13 vorgesehen, der vorzugsweise am Bremspedal 9 im Kraftfahrzeug angeordnet und mit dem Steuerungscomputer 10 über eine Signalleitung ver bunden ist. Dieser Bremssensor 13 erkennt die Auslenkung des Bremspedals 9 und leitet diese Information automatisch an den Steuerungscomputer zur Beendigung der Freilaufphase weiter.Finally, according to the invention, a brake sensor 13 is provided, which is preferably arranged on the brake pedal 9 in the motor vehicle and is connected to the control computer 10 via a signal line. This brake sensor 13 detects the deflection of the brake pedal 9 and automatically forwards this information to the control computer to end the free-running phase.
Im Normalbetrieb eines Kraftfahrzeuges mit einer derartigen An triebsanordnung ermittelt der Steuerungscomputer 10 aus den Sensorinformationen am Gangschalthebel 7 oder am Fahrpedal 8, daß der Fahrer eine bestimmte Antriebsleistung für sein Kraft fahrzeug benötigt. Wird durch ausbleibenden Pedaldruck am Fahr pedal 8 dem Steuerungscomputer 10 signalisiert, daß momentan kein Vortrieb nötig ist, so gibt er dem Kupplungsservo 4 den Befehl zum Auskuppeln der Kupplung 3 und zum Abstellen der Brennkraftmaschine 1. Wenn in dieser Freilaufphase durch den Fahrer beispielsweise der Schalter 11 geschlossen wird, ermit telt der Steuerungscomputer daraus den Wunsch des Fahrers nach einem Motorbremsbetrieb.In normal operation of a motor vehicle with such a drive arrangement, the control computer 10 determines from the sensor information on the gear shift lever 7 or on the accelerator pedal 8 that the driver needs a certain drive power for his motor vehicle. If there is no pedal pressure on the driving pedal 8, the control computer 10 is signaled that no propulsion is currently required, it gives the clutch servo 4 the command to disengage the clutch 3 and to shut off the internal combustion engine 1 . If, for example, the switch 11 is closed by the driver in this freewheeling phase, the control computer determines the driver's wish for an engine brake operation.
Neben dieser manuellen Einleitung des Motorbremsbetriebes durch Betätigen des Schalters 11 ist erfindungsgemäß eine automati sche Einleitung des Motorbremsbetriebes vorgesehen. Wird wäh rend einer Freilaufbetriebsphase das Bremspedal 9 zur Einlei tung eines Bremsvorganges ausgelenkt, so wird dieser Betriebs zustand durch einen Sensor 13 am Bremspedal sensiert und dem Steuerungscomputer 10 übermittelt. Dieser Steuerungscomputer 10 leitet dann dem Motorbremsbetrieb durch Starten der Brennkraft maschine 1 mittels des Anlassers 14 und oder nur durch Ein rücken der Kupplung 3 mittels des Kupplungsservos 4 ein.In addition to this manual initiation of engine braking operation by actuating switch 11 , an automatic initiation of engine braking operation is provided according to the invention. If the brake pedal 9 is deflected to initiate a braking operation during a freewheeling operating phase, this operating state is sensed by a sensor 13 on the brake pedal and transmitted to the control computer 10 . This control computer 10 then initiates the engine braking operation by starting the internal combustion engine 1 by means of the starter 14 and or only by moving the clutch 3 by means of the clutch servo 4 .
Aus diesem automatisch eingeleiteten Motorbremsbetrieb kann dann in bekannter Weise durch Betätigen des Gangwahlhebels 7, etwa zum Herunterschalten in einen niedrigeren Gang, und/oder durch Betätigen des Fahrpedals in eine Beschleunigungsfahrt zum Beispiel zum Verlassen einer Kurve übergegangen werden.From this automatically initiated engine brake operation, a change can then be made in a known manner by actuating the gear selector lever 7 , for example to downshift into a lower gear, and / or by actuating the accelerator pedal to accelerate, for example to leave a curve.
Sofern der Gangwahlhebel 7 und/oder das Fahrpedal 8 während der Phase des Motorbremsbetriebes nicht betätigt werden, leitet der Steuerungscomputer 10 bei in die Position der Nullauslenkung zurückgeführten Bremspedal die antriebslose Freilaufphase in Abhängigkeit von einer vorgewählten Fahrgeschwindigkeit wieder ein. Die Informationen über die aktuelle Fahrgeschwindigkeit wird dem Steuerungscomputer 10 in bekannter Weise über einen Sensor an der Getriebeabtriebswelle mitgeteilt.If the gear selector lever 7 and / or the accelerator pedal 8 are not actuated during the phase of the engine braking operation, the control computer 10 initiates the drive-free freewheeling phase as a function of a preselected driving speed when the brake pedal is returned to the position of the zero deflection. The information about the current driving speed is communicated to the control computer 10 in a known manner via a sensor on the transmission output shaft.
Claims (7)
mit einem Anlasser (14) für die Brennkraftmaschine (1), mit einem Steuerungscomputer (10) zur Verarbeitung von Signalen von Sensoren (11), (12), (15), die die Auslenkung des Fahr pedals (8), die Betätigung des Gangwahlhebels (7) und den Fahrerwunsch nach einem Motorbremsbetrieb signalisieren, da durch gekennzeichnet,
daß an der Fahrbremse des Kraftfahrzeuges ein mit einem Steuerungscomputer (10) verbundener Sensor (13) zur automa tischen Sensierung des Fahrerwunsches nach einem Motorbrems betrieb angeordnet ist.6. Drive arrangement for carrying out the method according to claims 1 to 5, with an internal combustion engine ( 1 ) which can be connected to an automatic transmission ( 3 ) with a manual transmission ( 2 ),
with a starter ( 14 ) for the internal combustion engine ( 1 ), with a control computer ( 10 ) for processing signals from sensors ( 11 ), ( 12 ), ( 15 ), the deflection of the driving pedal ( 8 ), the actuation of Signal the gear selector lever ( 7 ) and the driver's request for an engine brake operation, as indicated by
that on the driving brake of the motor vehicle is connected to a control computer ( 10 ) connected sensor ( 13 ) for automatic detection of the driver's request for an engine brake operation.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19507622A DE19507622B4 (en) | 1994-03-18 | 1995-03-04 | Method and drive arrangement for controlling the engine braking operation of a motor vehicle |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEP4409347.0 | 1994-03-18 | ||
DE4409347 | 1994-03-18 | ||
DE19507622A DE19507622B4 (en) | 1994-03-18 | 1995-03-04 | Method and drive arrangement for controlling the engine braking operation of a motor vehicle |
Publications (2)
Publication Number | Publication Date |
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DE19507622A1 true DE19507622A1 (en) | 1995-09-21 |
DE19507622B4 DE19507622B4 (en) | 2013-01-03 |
Family
ID=6513205
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19507622A Expired - Fee Related DE19507622B4 (en) | 1994-03-18 | 1995-03-04 | Method and drive arrangement for controlling the engine braking operation of a motor vehicle |
Country Status (1)
Country | Link |
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DE (1) | DE19507622B4 (en) |
Cited By (16)
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EP0827859A2 (en) * | 1996-09-04 | 1998-03-11 | Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 | Method and system for improving the driving stability during deceleration |
DE19637999A1 (en) * | 1996-09-18 | 1998-03-19 | Daimler Benz Ag | Method for operating an engine brake and device for carrying out the method |
FR2755486A1 (en) | 1996-11-02 | 1998-05-07 | Volkswagen Ag | Procedure for controlled starting of motor vehicle |
DE19707140C1 (en) * | 1997-02-22 | 1998-05-14 | Volkswagen Ag | System for control of automotive engine brake operation |
DE19706628A1 (en) * | 1997-02-20 | 1998-08-27 | Volkswagen Ag | Process for controlling an automated clutch |
FR2841504A1 (en) * | 2002-06-28 | 2004-01-02 | Bosch Gmbh Robert | Method for controlling vehicle propulsion, comprises computer program which disconnects the engine braking effect when rallying and reconnects it under particular conditions of slope |
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DE102005003608A1 (en) * | 2005-01-26 | 2006-08-03 | Zf Friedrichshafen Ag | Drivetrain operating method e.g. for vehicle, involves having propulsion engine such as internal combustion engine and torque converter such as automatic gearbox, or automated manual gearbox |
DE19805459B4 (en) * | 1997-02-20 | 2008-02-21 | Volkswagen Ag | Method for controlling the engagement of an automated clutch of a motor vehicle |
DE102008008930A1 (en) | 2008-02-13 | 2009-08-20 | Daimler Ag | motor vehicle |
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DE2803145C2 (en) * | 1978-01-25 | 1985-01-17 | Robert Bosch Gmbh, 7000 Stuttgart | Method and device for automatically stopping and restarting an engine to save fuel |
DE3045874A1 (en) * | 1980-12-05 | 1982-07-08 | Volkswagenwerk Ag, 3180 Wolfsburg | DRIVE FOR A VEHICLE EQUIPPED WITH A BRAKE |
DE3208715A1 (en) * | 1982-03-11 | 1983-09-22 | Sachs Systemtechnik Gmbh | FREEWHEEL CONTROL DEVICE FOR A MOTOR VEHICLE CLUTCH |
DE4334210C2 (en) * | 1992-10-23 | 2000-07-27 | Volkswagen Ag | Control method for operating a drive unit of a vehicle |
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EP0827859A3 (en) * | 1996-09-04 | 2000-05-10 | Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 | Method and system for improving the driving stability during deceleration |
EP0827859A2 (en) * | 1996-09-04 | 1998-03-11 | Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 | Method and system for improving the driving stability during deceleration |
DE19637999A1 (en) * | 1996-09-18 | 1998-03-19 | Daimler Benz Ag | Method for operating an engine brake and device for carrying out the method |
US6497097B2 (en) | 1996-09-18 | 2002-12-24 | Daimlerchrysler Ag | Turbocharged engine having engine compression braking control |
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EP1491788B1 (en) * | 2003-06-25 | 2011-03-16 | FIAT AUTO S.p.A. | Motor vehicle propulsion system with coasting mode |
EP1491788A1 (en) | 2003-06-25 | 2004-12-29 | FIAT AUTO S.p.A. | Motor vehicle propulsion system with coasting mode |
DE102005003608A1 (en) * | 2005-01-26 | 2006-08-03 | Zf Friedrichshafen Ag | Drivetrain operating method e.g. for vehicle, involves having propulsion engine such as internal combustion engine and torque converter such as automatic gearbox, or automated manual gearbox |
DE102008008930A1 (en) | 2008-02-13 | 2009-08-20 | Daimler Ag | motor vehicle |
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FR2962394A1 (en) * | 2010-07-07 | 2012-01-13 | Bosch Gmbh Robert | METHOD AND DEVICE FOR CONTROLLING A CLUTCH DURING THE OPERATION OF A MOTOR VEHICLE IN A FREE-WHEEL |
DE102010060079A1 (en) * | 2010-10-20 | 2012-04-26 | Ford Global Technologies, Llc | Method and control system for opening the drive train of a motor vehicle |
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US9150210B2 (en) | 2010-10-20 | 2015-10-06 | Ford Global Technologies, Llc | Method and control system for opening the drivetrain of a motor vehicle |
DE102010060079B4 (en) | 2010-10-20 | 2022-03-17 | Ford Global Technologies, Llc | Method and control system for opening the drive train of a motor vehicle |
DE102011109353A1 (en) * | 2011-03-10 | 2012-09-13 | Volkswagen Aktiengesellschaft | Method for operating a railless land vehicle |
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