WO2010064980A1 - Method for controlling a gear change process for a vehicle - Google Patents

Method for controlling a gear change process for a vehicle Download PDF

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Publication number
WO2010064980A1
WO2010064980A1 PCT/SE2009/051352 SE2009051352W WO2010064980A1 WO 2010064980 A1 WO2010064980 A1 WO 2010064980A1 SE 2009051352 W SE2009051352 W SE 2009051352W WO 2010064980 A1 WO2010064980 A1 WO 2010064980A1
Authority
WO
WIPO (PCT)
Prior art keywords
vehicle
gear change
gear
change device
control unit
Prior art date
Application number
PCT/SE2009/051352
Other languages
French (fr)
Inventor
Jan PALMÉR
Niclas Evertsson
Anders Kjell
Original Assignee
Scania Cv Ab (Publ)
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Scania Cv Ab (Publ) filed Critical Scania Cv Ab (Publ)
Publication of WO2010064980A1 publication Critical patent/WO2010064980A1/en

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Classifications

    • 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
    • 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, 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
    • B60W30/19—Improvement of gear change, e.g. by synchronisation or smoothing gear shift
    • 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
    • F16H61/02—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 characterised by the signals used
    • F16H61/0202—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 characterised by the signals used the signals being electric
    • F16H61/0204—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 characterised by the signals used the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal
    • 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
    • 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
    • B60K6/00—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00
    • B60K6/20—Arrangement or mounting of plural diverse prime-movers for mutual or common propulsion, e.g. hybrid propulsion systems comprising electric motors and internal combustion engines ; Control systems therefor, i.e. systems controlling two or more prime movers, or controlling one of these prime movers and any of the transmission, drive or drive units Informative references: mechanical gearings with secondary electric drive F16H3/72; arrangements for handling mechanical energy structurally associated with the dynamo-electric machine H02K7/00; machines comprising structurally interrelated motor and generator parts H02K51/00; dynamo-electric machines not otherwise provided for in H02K see H02K99/00 the prime-movers consisting of electric motors and internal combustion engines, e.g. HEVs
    • 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
    • B60W2520/00—Input parameters relating to overall vehicle dynamics
    • B60W2520/10—Longitudinal 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
    • F16H59/68—Inputs being a function of gearing status
    • F16H2059/6807—Status of gear-change operation, e.g. clutch fully engaged
    • 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
    • F16H2708/00—Control devices for speed-changing geared mechanisms, e.g. specially adapted couplings for synchronising devices, devices to simplify control, control of auxiliary gearboxes
    • F16H2708/24—Control devices for speed-changing geared mechanisms, e.g. specially adapted couplings for synchronising devices, devices to simplify control, control of auxiliary gearboxes with a preselection system, mainly semi-automatic, e.g. with automatic preselection, but controlled at the intended moment, with force amplification
    • 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
    • F16H59/56—Inputs being a function of the status of the machine, e.g. position of doors or safety belts dependent on signals from the main clutch
    • 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
    • F16H61/02—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 characterised by the signals used
    • F16H61/0202—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 characterised by the signals used the signals being electric
    • F16H61/0248—Control units where shifting is directly initiated by the driver, e.g. semi-automatic transmissions

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Transmission Device (AREA)

Abstract

A method for controlling a gear change process for a vehicle 1 comprising an engine 2 for powering the vehicle 1, a gear change device 4 for transmission ratios between the engine 2 and the vehicle's powered wheels 7, and an electronic control unit 14 for controlling the gear change device 4, which method comprises the steps of engaging neutral position of the gear change device (4) when a driver of the vehicle 1 acts upon a clutch means 13 which is situated close to the gear change device 4, synchronising the speed of the engine 2 with the speed of the vehicle 1 and of preselecting one of the gears of the gear change device (4) and to only engage the preselected gear when the driver acts upon the clutch means (13). A vehicle 1, an electronic control unit 14 and a computer programme product (21) are also described.

Description

METHOD FOR CONTROLLING A GEAR CHANGE PROCESS FOR A
VEHICLE
FIELD OF THE INVENTION
The present invention relates to a method for controlling a gear change process for a vehicle. The invention relates also to a vehicle comprising a gear change device, a computer programme product for controlling the gear change process, and an electronic control unit comprising the computer programme product.
BACKGROUND TO THE INVENTION AND PRIOR ART
A known gear change device for changing gear in a vehicle is a so-called "shift by wire" system in which the mechanical elements between the gearbox and the gear lever are replaced by wiring, and gear changing is effected electronically in such a way that when the driver changes gear by moving the gear lever between various gear positions electronic signals are given to a control unit which then sends to the gearbox signals conveying information about which gear is to be engaged.
However, gear changing is not fully automated, since it is effected via a manual clutch which the driver has to apply when changing gear. When the driver changes gear, the gear lever has to pass through a neutral position before the next gear can be engaged. Since it is the control unit which engages the chosen gear, there is no natural sensation via the gear lever to indicate when a gear has been engaged, resulting in a problem for the driver to know when he/she can release the clutch. This problem has previously been solved by an acoustic signal indicating when the clutch can be released, or by a vibration initiated in the gear lever when the clutch can be released, or by a locking device preventing the clutch from being released before the gear is engaged. The problem with these alternatives is that they all entail extra cost for the gear change device. They also detract from the driver's driving comfort.
SUMMARY OF THE INVENTION
The objects of the present invention are to eliminate the problems identified above and provide a gear change device which results in a more economic solution, reduces the gear change forces in the gear lever and makes it easier for the driver to operate the vehicle.
These objects are achieved with the method indicated in the introduction for controlling a gear change device for a vehicle comprising an engine for powering the vehicle, a gear change device for transmission ratios between the engine and the vehicle's powered wheels, and an electronic control unit for controlling the gear change device, which method comprises the steps of:
- engaging the gear change device's neutral position when a driver of the vehicle acts upon a clutch means which is situated close to the gear change device,
- synchronising the speed of the engine with the speed of the vehicle,
- preselecting one of the gears of the gear change device (4), and
- only engaging the preselected gear when the driver acts upon the clutch means (13).
The result is an increased effect of quicker and more convenient gear changing in that the system presents the step to the driver with a view to a gear change but allows for the driver's intentions and driving pattern in that the gear is only engaged when the driver acts upon the clutch means. The fact that the gear change device's neutral position is engaged by the electronic control unit, instead of being engaged when the driver moves the gear lever to an initial position indicated for the gear lever, means that any desired gear change pattern can be adopted, e.g. with the gear positions oriented in a straight line so that all of the gear positions are oriented either towards or away from the driver, or with some of the gear positions oriented towards the driver and some away from the driver. The gear positions may also be displaced laterally relative to one another and arranged in various gear subsections.
The above objects are also achieved with a vehicle which is characterised in that it also comprises decision means adapted to enabling the electronic control unit to engage the gear change device's neutral position when a driver of the vehicle acts upon a clutch means situated close to the gear change device, wherein the decision means further is adapted to enabling the electronic control unit to synchronise the speed of the engine with the speed of the vehicle, preselect one of the gear change device's gears, and to only engage the preselected gear when the driver acts upon the clutch means. Here again the result is an increased effect of quicker and more convenient gear changing in that the system presents the step to the driver with a view to a gear change but allows for the driver's intentions and driving pattern in that the gear is only engaged when the driver acts upon the clutch means, as according to an embodiment of the method according to the present invention.
According to the present invention, the decision means takes the form of a computer programme product.
According to a further embodiment of the invention, the vehicle's gear change device comprises a gearbox with a number of gears arranged at various gear positions, a control device adapted to being operated for selection of the gear change device's various gear positions, and wiring for electronic connection between the gearbox and the control device via the electronic control unit. The gears may be arranged in many different ways in the gearbox. For example, the gearbox may comprise a split function which adds a half gear step between each ordinary gear step, and/or a range function which adds a high and a low position for all the gears of the gearbox. This means that a large number of different gearbox configurations may be adopted with a large number of gear steps. For example, a gearbox may be so configured that it comprises a main unit with three gears. In addition, the gearbox may comprise said split function which provides three further gears. The gearbox may further also comprise said range function which in that case provides six more gears. This gearbox configuration results in a total of twelve gears and the present invention helps the driver of the vehicle to be able quickly and conveniently to manoeuvre between them.
The control device for manoeuvring between the various gear positions may take the form of a traditional gear lever, but may also take the form of one or two "paddles" which are situated behind the vehicle's steering wheel and which can be moved towards or away from the steering wheel in order to change gear. The control device may also take the form of a knob which might be turned clockwise and/or anticlockwise to change gear.
The electronic control unit may be adapted to controlling the changing of the various gears of the gearbox according to the position of the control device. The control unit may also be suitable for connection to an onboard network bus in a vehicle, comprising an execution means, a memory and a data storage medium on which a computer programme product is stored.
According to an embodiment of the present invention, the computer programme product may be adapted to controlling a gear change device of a vehicle, comprising computer programme code which, when run in an electronic control unit in a vehicle, enables the electronic control unit to engage the gear change device's neutral position when a driver of the vehicle acts upon a clutch means situated close to the gear change device, to synchronise the speed of the engine with the speed of the vehicle and to engage one of the gear change device's gears, irrespective of how the driver acts upon the clutch means.
According to a further embodiment of the present invention, the computer programme product may comprise computer programme code which, when run in an electronic control unit in a vehicle, enables the electronic control unit to preselect one of the gear change device's gears and only to engage the preselected gear when the driver acts upon the clutch means.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention is explained in more detail below by a description of various embodiments with reference to the attached drawings.
Fig. 1 depicts schematically a vehicle according to the invention,
Fig. 2 depicts schematically an embodiment according to the invention, and Fig. 3 depicts a flowchart for an embodiment of a method according to the invention.
DETAILED DESCRIPTION OF VARIOUS EMBODIMENTS OF THE INVENTION
Figure 1 depicts schematically a vehicle 1 , e.g. a bus or truck, comprising an engine 2 for powering the vehicle, e.g. a combustion engine, a hybrid engine or an electric motor. The engine 2 is coupled to an input shaft 3 for a gear change device comprising a gearbox 4 via a clutch arrangement 5. Engine torque is thus transmitted to a propeller shaft 6 via the gearbox 4, and the propeller shaft 6 transmits the engine torque to a number of powered wheels 7 via a differential 8 and corresponding driveshafts 9. The vehicle 1 also comprises at least one forward axle 10 with at least two unpowered wheels 11. The vehicle further comprises a control device 12 for selecting a gear which forms part of the gearbox 4. Figure 1 illustrates the control device 12 as a gear lever. A clutch means
13 is so arranged that a driver can indicate that the clutch arrangement 5 is to be activated by selection of the various gears. Figure 1 illustrates the clutch means 13 as a clutch pedal. An electronic control unit (ECU)
14 is adapted to controlling the gearbox 4 and the clutch arrangement 5. This control may be effected on the basis of how a driver operates the control device 12 and the clutch means 13 but may also be effected irrespective of how the driver operates the control device 12 and the clutch means 13. The control device 12 is connected to the ECU 14 by wiring 15a. The clutch means 13 is likewise connected to the ECU 14 by wiring 15b. The ECU 14 may communicate with other ECUs (depicted in Figure 1 as unnumbered squares) provided in the vehicle for controlling other vehicle components, via an on-board network bus 16, e.g. a bus compatible with CAN (controller area network), TTCAN (time-triggered controller area network) and/or FlexRay.
Figure 2 illustrates very schematically an electronic control unit 14 according to the present invention which comprises an execution means 17, e.g. a central processor unit (CPU), for execution of computer software. The execution means 17 communicates with a memory 18, e.g. of the RAM type, via a data bus 19. The control unit 14 comprises also a data storage medium 20, e.g. in the form of a CD ROM disc, a DVD disc, a magnetic data storage medium in the form of a hard disc, a diskette, a cassette tape or a memory of the ROM, PROM, EPROM or EEPROM type or a flash memory. The execution means 17 communicates with the data storage medium 20 via the data bus 19. A computer programme comprising computer programme code for implementing a method according to the invention, e.g. in accordance with the embodiment illustrated in Figure 3, is stored on the data storage medium 20.
Figure 3 depicts a flowchart illustrating an embodiment of a method according to the present invention for controlling a gear change device for a vehicle. At a first step S1 the electronic control unit 14 receives information that a driver of the vehicle 1 acts upon a clutch means 13 situated close to the gear change device 4, whereupon the electronic control unit 14 sends to the gear change device 4 signals to the effect that neutral position is to be engaged. At a second step S2 the speed of the engine 2 is synchronised with the speed of the vehicle 1 on the basis of the information from the electronic control unit 14. Thereafter, at a third step S3, one of the gears of the gear change device 4 is preselected and is engaged only when the driver acts upon the clutch means 13. The invention is not limited to the embodiments depicted but may be varied and modified within the scope of the claims set out below.

Claims

1. A method for controlling a gear change process for a vehicle (1 ) comprising an engine (2) for powering the vehicle (1 ), a gear change device (4) for transmission ratios between the engine (2) and the powered wheels (7) of the vehicle, and an electronic control unit (14) for controlling the gear change device (4), wherein the method comprises the step of a driver of the vehicle (1 ) by means of a control device (12) selects a coming gear,
c h a r a c t e r i s e d i n
that the method further comprises the steps of by means of control from the electronic control unit (14): - engaging neutral position of the gear change device (4) when a driver of the vehicle (1 ) acts upon a clutch means (13) which is situated close to the gear change device (4),
- synchronising the speed of the engine (2) with the speed of the vehicle
(1 ). - preselecting one of the gears of the gear change device (4), and
- only engaging the preselected gear when the driver acts upon the clutch means (13).
2. A vehicle (1 ) comprising an engine (2) for powering the vehicle (1 ), a gear change device (4) for transmission ratios between the engine (2) and the powered wheels (7) of the vehicle, and an electronic control unit (14) for controlling the gear change device (4), wherein the gear change device (4) comprises a gearbox with a number of gears arranged at various gear positions, a control device (12) adapted to being operated for selection of the various gear positions of the gearbox (4), and wiring (15a) for electronic connection between the gearbox (4) and the control device (12) via the electronic control unit (14),
c h a r a c t e r i s e d i n
- that the vehicle (1 ) comprises also decision means (21 ) adapted to enabling the electronic control unit (14) to engage neutral position of the gear change device (4) when a driver of the vehicle (1 ) acts upon a clutch means (13) which is situated close to the gear change device (4), wherein said decision means is adapted to enabling the electronic control unit (14) to synchronise the speed of the engine (2) with the speed of the vehicle (1 ), and to preselect one of the gears of the gear change device (4) and to only engage the preselected gear when the driver acts upon the clutch means (13).
3. A vehicle (1 ) according to claim 2, characterised in that the decision means takes the form of a computer programme product.
4. A vehicle (1 ) according to any one of claims 2-3, characterised in that the electronic control unit (14) is adapted to controlling gear changing of the various gears of the gearbox (4) on the basis of the position of the control device (12).
5. A vehicle (1 ) according to any one of the claims 2-4, characterised in that the control device (12) comprises a gear lever.
6. A computer programme product for controlling a gear change process of a vehicle, comprising computer programme code which, when run in an electronic control unit (14) in a vehicle (1 ), enables the electronic control unit (14) to: - engage neutral position of the gear change device (4) when a driver of the vehicle (1 ) acts upon a clutch means (13) which is situated close to the gear change device (4),
- synchronise the speed of the engine (2) with the speed of the vehicle (1 ),
- preselect one of the gears of the gear change device (4), and
- only engage the preselected gear when the driver acts upon the clutch means (13).
7. An electronic control unit (14) of a vehicle (1 ), comprising an execution means (17), a memory (18) connected to the execution means and a data storage medium (19) connected to the execution means, the computer programme code of a computer programme product according to claim 6 being stored on said data storage medium (19).
8. An electronic control unit according to claim 7, which electronic control unit (14) is an electronic gear change device control unit.
PCT/SE2009/051352 2008-12-03 2009-11-30 Method for controlling a gear change process for a vehicle WO2010064980A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE0850115-7 2008-12-03
SE0850115A SE533258C2 (en) 2008-12-03 2008-12-03 Method of controlling a changeover procedure for a vehicle

Publications (1)

Publication Number Publication Date
WO2010064980A1 true WO2010064980A1 (en) 2010-06-10

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ID=42233466

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2009/051352 WO2010064980A1 (en) 2008-12-03 2009-11-30 Method for controlling a gear change process for a vehicle

Country Status (2)

Country Link
SE (1) SE533258C2 (en)
WO (1) WO2010064980A1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997044210A1 (en) * 1996-05-20 1997-11-27 Meritor Heavy Vehicle Systems, Llc. Shift by wire transmission system
US6109407A (en) * 1998-03-17 2000-08-29 Wabco Gmbh & Co, Ohg Process for the control of a transmission

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997044210A1 (en) * 1996-05-20 1997-11-27 Meritor Heavy Vehicle Systems, Llc. Shift by wire transmission system
US6109407A (en) * 1998-03-17 2000-08-29 Wabco Gmbh & Co, Ohg Process for the control of a transmission

Also Published As

Publication number Publication date
SE0850115A1 (en) 2010-06-04
SE533258C2 (en) 2010-08-03

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