DE10260011A1 - Improving shift comfort of motor vehicle high/low gearbox involves setting engine revolution rate to below gearbox input shaft's revolution rate for down shift in engine braking mode - Google Patents
Improving shift comfort of motor vehicle high/low gearbox involves setting engine revolution rate to below gearbox input shaft's revolution rate for down shift in engine braking mode Download PDFInfo
- Publication number
- DE10260011A1 DE10260011A1 DE10260011A DE10260011A DE10260011A1 DE 10260011 A1 DE10260011 A1 DE 10260011A1 DE 10260011 A DE10260011 A DE 10260011A DE 10260011 A DE10260011 A DE 10260011A DE 10260011 A1 DE10260011 A1 DE 10260011A1
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- speed
- input shaft
- drive motor
- revolution rate
- transmission input
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- 238000000034 method Methods 0.000 claims abstract description 15
- 230000005540 biological transmission Effects 0.000 claims description 31
- 239000007858 starting material Substances 0.000 claims description 3
- 238000011144 upstream manufacturing Methods 0.000 claims description 2
- 230000036461 convulsion Effects 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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
- B60W10/08—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of electric propulsion units, e.g. motors or generators
-
- 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
- B60W10/04—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
-
- 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
- B60W10/10—Conjoint control of vehicle sub-units of different type or different function including control of change-speed gearings
- B60W10/11—Stepped gearings
-
- 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
- B60W30/18—Propelling the vehicle
- B60W30/1819—Propulsion control with control means using analogue circuits, relays or mechanical links
-
- 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
- B60W30/18—Propelling the vehicle
- B60W30/19—Improvement of gear change, e.g. by synchronisation or smoothing gear shift
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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
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/40—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism comprising signals other than signals for actuating the final output mechanisms
- F16H63/50—Signals to an engine or motor
-
- 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
- B60W2510/00—Input parameters relating to a particular sub-units
- B60W2510/10—Change speed gearings
- B60W2510/1015—Input shaft speed, e.g. turbine speed
-
- 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
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/06—Combustion engines, Gas turbines
- B60W2710/0644—Engine speed
-
- 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
- F16H59/36—Inputs being a function of speed
- F16H59/38—Inputs being a function of speed of gearing elements
- F16H2059/385—Turbine speed
-
- 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
- F16H61/04—Smoothing ratio shift
- F16H61/0403—Synchronisation before shifting
- F16H2061/0422—Synchronisation before shifting by an electric machine, e.g. by accelerating or braking the input shaft
-
- 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
- F16H61/04—Smoothing ratio shift
- F16H2061/0496—Smoothing ratio shift for low engine torque, e.g. during coasting, sailing or engine braking
-
- 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
- F16H2306/00—Shifting
- F16H2306/40—Shifting activities
- F16H2306/54—Synchronizing engine speed to transmission input speed
-
- 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
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/40—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism comprising signals other than signals for actuating the final output mechanisms
- F16H63/50—Signals to an engine or motor
- F16H63/502—Signals to an engine or motor for smoothing gear shifts
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Automation & Control Theory (AREA)
- General Engineering & Computer Science (AREA)
- Hybrid Electric Vehicles (AREA)
- Control Of Transmission Device (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zur Verbesserung des Schaltkomforts eines Kraftfahrzeuglastschaltgetriebes mit den im Oberbegriff des Patenanspruches 1 genannten Merkmalen.The invention relates to a method to improve the shifting comfort of a motor vehicle powershift transmission with the features mentioned in the preamble of patent claim 1.
Vorbekannt ist durch die
Aus der
Weiterhin ist aus der
Vorbekannt ist durch die
Der Nachteil der Ausführungen gemäß dem bekannten Stand der Technik besteht darin, dass beim Rückschalten mit geringer Last oder bei Nullgas der Motor seine neue Zieldrehzahl nur langsam erreicht. Bei Nullgas muss der Motor geschleppt werden, da das vom Fahrer vorgegebene Motormoment nur ein geringes bzw. kein Überschuss-Drehmoment über dem Reibmoment anbietet. Das Hochschleppen des Motors bei Nullgas erzeugt am Rad ein mit Motorbeschleunigung ansteigendes Reaktionsmoment. Das Reaktionsmoment äußert sich in Form eines Ruckes und hinterlässt einen negativen Fahreindruck. Da mit dem bekannten Stand der Technik sich der Lastzustand während der Schaltung nicht unmittelbar bestimmen lässt, können die beschriebenen negativen Einflüsse bei lastschaltenden Fahrzeuggetrieben nicht beseitigt werden.The disadvantage of the designs according to the known State of the art is that when switching down with a low load or the engine reaches its new target speed slowly at zero throttle. At zero throttle, the engine must be towed, because of the driver specified engine torque only a little or no excess torque above the Offers friction torque. The engine is towed at zero gas a reaction torque on the wheel that increases with engine acceleration. The Reaction moment is expressed in the form of a jerk and leaves a negative driving impression. As with the known prior art the load state during the circuit can not be determined directly, the negative described influences not be eliminated in load shifting vehicle transmissions.
Aufgabe der Erfindung ist es, den Schaltkomfort eines Kraftfahrzeuglastschaltgetriebes insbesondere beim Rückschalten mit geringer Last oder bei Nullgas derart zu verbessern, dass die notwendige Schaltzeit reduziert wird und der Lastzustand beim Gangwechsel sicher beibehalten wird, um die beim Schaltvorgang auftretenden Momentenstöße am Getriebeausgang weitestgehend zu vermeiden.The object of the invention is Shifting comfort of a motor vehicle power shift transmission in particular when downshifting with low load or at zero gas so that the necessary shift time is reduced and the load state when changing gear is safely maintained to those occurring during the switching process Torque surges at the transmission output to be avoided as far as possible.
Diese Aufgabe wird bei einem gattungsgemäßen Verfahren erfindungsgemäß durch die kennzeichnenden Merkmale des Patentanspruches 1 gelöst.This task is carried out in a generic method according to the invention the characterizing features of claim 1 solved.
Dadurch, dass die Solldrehzahl des Antriebsmotors während des Gangwechsels ständig mit dem Verlauf der Drehzahl der Getriebeeingangswelle mitgeführt wird, ist sichergestellt, dass der Lastzustand beim Gangwechsel sicher beibehalten wird und unabhängig von der Geschwindigkeit des Schaltablaufs im Getriebe permanent kontrolliert und eingestellt werden kann. Das hat zur Folge, dass Rückschaltungen bei geringer Last oder bei Nullgas in einer kürzeren Schaltzeit und bei einem verbesserten Komforteindruck erfolgen. Ein Rucken des Fahrzeuges beim Rückschalten wird weitestgehend vermieden.Because the target speed of the Drive motor during of changing gear constantly is carried along with the course of the speed of the transmission input shaft, ensures that the load condition is safe when changing gears is maintained and independent of the speed of the shift sequence in the transmission can be checked and adjusted. This has the consequence that downshifts at low load or at zero gas in a shorter switching time and at one improved comfort impression. A jerk of the vehicle when downshifting is largely avoided.
Durch das Erzeugen eines erforderlichen Zusatzdrehmoments mittels eines Startergenerators und/oder durch eine zusätzliche E-Maschine erfolgt eine getriebeeingangswellendrehzahlgeführte Synchronisationsunterstützung, wodurch insgesamt ein verbessertes Regelverhalten der Antriebseinheit erzielt wird.By creating a required Additional torque by means of a starter generator and / or an additional E-machine takes a gear input shaft speed-guided synchronization support, whereby Overall, an improved control behavior of the drive unit is achieved becomes.
Weitere vorteilhafte Ausgestaltungen sind in den Unteransprüchen beschrieben, sie werden in der Beschreibung zusammen mit ihren Wirkungen erläutert.Further advantageous configurations are in the subclaims They are described in the description along with their effects explained.
Die Erfindung wird nachfolgend anhand eines Ausführungsbeispiels näher beschrieben.The invention is described below of an embodiment described in more detail.
Erfindungsgemäß wird zur Verbesserung des Schaltkomforts eines Kraftfahrzeuglastschaltgetriebes mittels Steuerelektronik die Solldrehzahl des Antriebsmotors so eingestellt, dass diese beim Gangwechsel mit dem Verlauf der Drehzahl der Getriebeeingangswelle mitgeführt wird. Dabei wird durch die Steuerelektronik bei einer Rückschaltung im Schubbetrieb die Drehzahl des Antriebsmotors auf einen Wert eingestellt, der unter der Drehzahl der Getriebeeingangswelle liegt. Bei einer Rückschaltung im Zugbetrieb wird die Drehzahl des Antriebsmotors auf einen Wert eingestellt, der über der Drehzahl der Getriebeeingangswelle liegt, während bei Lastfreiheit die Drehzahl des Antriebsmotors auf einen Wert eingestellt wird, der annähernd gleich der Drehzahl der Getriebeeingangswelle ist.According to the invention, in order to improve the shifting comfort of a motor vehicle powershift transmission by means of control electronics, the target speed of the drive motor is set so that it is carried along with the course of the speed of the transmission input shaft when changing gear. This is done by the control electronics when switching back in overrun mode, the speed of the drive motor is set to a value which is lower than the speed of the transmission input shaft. During a downshift in train operation, the speed of the drive motor is set to a value that is above the speed of the transmission input shaft, while when the load is off, the speed of the drive motor is set to a value that is approximately equal to the speed of the transmission input shaft.
Das Führen der Motordrehzahl in Abhängigkeit von der Getriebeeingangswellendrehzahl erfolgt durch die Steuerelektronik durch Verstellen des Zündwinkels, der Änderung der Kraftstoffmengenzufuhr oder durch Änderung der Drosselklappenverstellung. Durch die Steuerelektronik wird die Drehzahl des Antriebsmotors auf z. B. ca. 90 % der Drehzahl der Getriebeeingangswelle bei einer Rückschaltung im Schubbetrieb eingestellt. Bei einer Rückschaltung im Zugbetrieb wird die Drehzahl des Antriebsmotors auf ca. 110 % der Drehzahl der Getriebeeingangswelle eingestellt.Depending on the engine speed of the transmission input shaft speed is done by the control electronics by adjusting the ignition angle, of change the fuel quantity supply or by changing the throttle valve adjustment. The speed of the drive motor is controlled by the control electronics on z. B. about 90% of the speed of the transmission input shaft at a Downshift in Overrun mode set. With a downshift in train operation the speed of the drive motor to approx. 110% of the speed of the transmission input shaft set.
Ist dem Getriebe ein Hydraulikwandler vorgeschaltet, wird die Turbinendrehzahl als Ausgangsgröße zum Einstellen der Drehzahl des Antriebsmotors verwendet. Die Führung der Motordrehzahl erfolgt analog anhand der oben beschriebenen Parameter.The transmission is a hydraulic converter upstream, the turbine speed is used as an output variable for setting the speed of the drive motor used. The engine speed is controlled analogously using the parameters described above.
Eine Variante der erfindungsgemäßen Lösung sieht vor, dass bei einer Rückschaltung im Zugbetrieb das erforderliche Zusatzdrehmoment teilweise oder vollständig durch einen Startergenerator und/oder durch eine zusätzliche E-Maschine erzeugt wird. Durch das getriebeseitige Einleiten eines zusätzlichen Drehmoments wird einerseits abgesichert, dass ein entsprechender Lastzustand am Getriebe vorhanden ist. Das zusätzlich eingeleitete Drehmoment ermöglicht andererseits ein insgesamt verbessertes Regelverhalten für die Antriebseinheit hinsichtlich des Aufbaus eines entsprechenden Lastzustandes am Triebstrang.See a variant of the solution according to the invention before that when downshifting in train operation the required additional torque partially or Completely by a starter generator and / or by an additional one E-machine is generated. By initiating a transmission additional Torque is ensured on the one hand that a corresponding Load condition on the gearbox is present. The additionally introduced torque allows on the other hand, an overall improved control behavior for the drive unit with regard to the construction of a corresponding load state on the drive train.
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10260011A DE10260011A1 (en) | 2002-12-17 | 2002-12-17 | Improving shift comfort of motor vehicle high/low gearbox involves setting engine revolution rate to below gearbox input shaft's revolution rate for down shift in engine braking mode |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10260011A DE10260011A1 (en) | 2002-12-17 | 2002-12-17 | Improving shift comfort of motor vehicle high/low gearbox involves setting engine revolution rate to below gearbox input shaft's revolution rate for down shift in engine braking mode |
Publications (1)
Publication Number | Publication Date |
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DE10260011A1 true DE10260011A1 (en) | 2004-07-15 |
Family
ID=32519203
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DE10260011A Withdrawn DE10260011A1 (en) | 2002-12-17 | 2002-12-17 | Improving shift comfort of motor vehicle high/low gearbox involves setting engine revolution rate to below gearbox input shaft's revolution rate for down shift in engine braking mode |
Country Status (1)
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DE (1) | DE10260011A1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007085361A1 (en) * | 2006-01-26 | 2007-08-02 | Zf Friedrichshafen Ag | Method for controlling a motor vehicle drive train |
EP2017152A3 (en) * | 2007-06-13 | 2011-01-05 | Nissan Motor Co., Ltd. | Vehicle engine control apparatus |
DE102011008597A1 (en) * | 2011-01-14 | 2012-07-19 | GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) | Method and means for controlling the downshift |
DE102012222366A1 (en) * | 2012-12-06 | 2014-06-12 | Zf Friedrichshafen Ag | Control system of hybrid vehicle, has switching sequence controller to determine actuating signals for combustion engine and actuating signals for electric machine for controlling the load circuits in gear box of hybrid vehicle |
-
2002
- 2002-12-17 DE DE10260011A patent/DE10260011A1/en not_active Withdrawn
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007085361A1 (en) * | 2006-01-26 | 2007-08-02 | Zf Friedrichshafen Ag | Method for controlling a motor vehicle drive train |
EP2017152A3 (en) * | 2007-06-13 | 2011-01-05 | Nissan Motor Co., Ltd. | Vehicle engine control apparatus |
US8016723B2 (en) | 2007-06-13 | 2011-09-13 | Nissan Motor Co., Ltd. | Vehicle engine control apparatus |
DE102011008597A1 (en) * | 2011-01-14 | 2012-07-19 | GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) | Method and means for controlling the downshift |
DE102012222366A1 (en) * | 2012-12-06 | 2014-06-12 | Zf Friedrichshafen Ag | Control system of hybrid vehicle, has switching sequence controller to determine actuating signals for combustion engine and actuating signals for electric machine for controlling the load circuits in gear box of hybrid vehicle |
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DE10260011A1 (en) | Improving shift comfort of motor vehicle high/low gearbox involves setting engine revolution rate to below gearbox input shaft's revolution rate for down shift in engine braking mode | |
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