Scania Cv Ab

Scania Cb Ab

Peter Asplund

Fredrik Swartling

Peter Juhlin-Dannfelt

Anders Kjell

Mikael Öun

Mikael Wågberg

Mats Liwell

Richard Boström

Mikael Wägberg

Johan Kingstedt

A method for determination of a first parameter Rwhich represents a motive force capacity of a motor vehicle () provided with a power train which may assume various transmission ratios for propulsion of the vehicle (). The vehicle includes an engine () and a gearbox (). The first parameter Ris determined on the basis of a difference between a first motive force Fand a second motive force F. The first motive force Fis a maximum motive force available for the vehicle () at a current transmission ratio. The second motive force Fis a current running resistance for the vehicle (). There is a use of such a parameter. A computer program, a computer program product, a system and a motor vehicle related to such a parameter are disclosed.

Method for determination of motive force capacity of a motor vehicle

A method for control of a vehicle gearbox which is automatically controlled by a control system. The control system's choice of transmission ratio is influenceable by the vehicle's driver. The control system chooses an initial transmission ratio for moving off stationary. The method includes determining a first initial transmission ratio by using the control system, and determining a second initial transmission ratio indicated by the vehicle driver. The gearbox is set to the second initial transmission ratio indicated by the driver when the second ratio is higher than the first initial transmission ratio determined by the control system.

Method and system for control of a gearbox

A method for setting a vehicle in motion: The vehicle includes a combustion engine for generating driving force for transmission to at least one powered wheel via a clutch and a gearbox. The driving force is selectively transmitted from the engine to the powered wheels by closure of the clutch. Gear changes by the gearbox are at least partly controlled by a control system. With the clutch closed and upon demand for the vehicle to be set in motion with the clutch closed, the control system activates the vehicle's starter motor with gear engaged, and uses the starter motor to accelerate the combustion engine to an initial speed which represents a speed at which the combustion engine will start.

Method and system for setting a vehicle in motion

A system for control of a gearbox, having at least one control unit controlling the gearbox where the gearbox is installed in a motor vehicle having an engine connected to drive the gearbox. The system effects a first upshift from a first gear to a second gear if the acceleration a for the vehicle is greater than nil for the second gear and the current engine speed is within a first engine speed range; and effects a second upshift from the first gear to a third gear if the current engine speed is within a second engine speed range. The first speed range is lower than the second speed range of the engine. A method, a motor vehicle, a computer program and a computer program product for the method are disclosed.

System for control of a gearbox

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Mariefred, Sweden

Peter Asplund