Volvo Truck Corporation

Johan Fries

Teodoro Bora

Henrik Ryberg

Viktor Lägnert

Laurent Boisson

The invention provides a method for controlling a vehicle () comprising a drivetrain comprising at least one drive device () adapted to generate mechanical power, the method comprising—controlling the vehicle to perform a mission comprising a plurality of stages (MS-MS), —collecting operational data relevant to the operation of the drivetrain, wherein the operational data indicate a de-rate of a component of the drivetrain, a fault of a component of the drivetrain, and/or an environmental condition which influences the drivetrain operation, —determining an expected mission stage (MS-MS), —determining, in dependence on the operational data, the propulsive capacity (CA-CA) in at least two different operational areas (A-A) of the drive device (), —mapping the operational area propulsive capacities (CA-CA) to the expected mission stage (MS-MS), and —controlling the vehicle () in dependence on said mapping.

Method for controlling a vehicle

Methods for controlling a transmission of a vehicle are provided. Such methods include

Method for controlling a transmission of a vehicle

The invention provides a method for controlling braking of a vehicle () driving along a downhill portion of a road, the vehicle comprising a propulsion arrangement (), for the propulsion of the vehicle, the method comprising dividing the road portion into a plurality of sections (RS-RS), the sections comprising a first section (RS), and a second section (RS) following, in the direction of travel of the vehicle, immediately upon the first section (RS), determining, for the road portion, a road portion control strategy, with a condition that braking on the road portion is done at least partly by means of the propulsion arrangement (), wherein determining the road portion control strategy comprises determining a speed (SD), on the second section (RS), with an aim to minimize the time travelled on the second section, and/or, where the propulsion arrangement comprises an internal combustion engine (), and a gearbox (), determining a gear selection (GS) on the second section (RS), with an aim to minimize the time travelled on the second section, and wherein determining the road portion control strategy comprises determining, for the first section (RS), a first section control strategy, with an aim to minimize the time travelled on the first section, and with an aim to provide a vehicle speed at the end of the first section (RS) which is the same as said determined speed (SD) on the second section (RS), and/or to provide a gear selection at the end of the first section which is the same as said determined gear selection (GS) on the second section (RS), the method further comprising controlling the vehicle () according to the determined road portion control strategy.

Method for controlling braking of a vehicle

The invention relates to a method for a control unit () for stopping a vehicle () when stopping at different types of stop positions (), the method comprising the following steps: &#x2014;(S) the control unit receiving input about a specific stop position for the vehicle, associated with when the vehicle is about to stop during a stopping sequence, the input being indicative of whether the specific stop position requires a high-precision stop or if a stop with a lower precision can be used; and &#x2014;(S) when the stop position requires a high-precision stop, the control unit controlling the stopping sequence such that the vehicle stops with a first stopping precision level with respect to the specific stop position, and when a lower precision can be used for the stop, the control unit controlling the stopping sequence such that the vehicle stops with a second stopping precision level which is lower than the first precision level. The invention further relates to a control unit and to a vehicle comprising the control unit.

Method and a control unit for stopping a vehicle when stopping at different types of stop positions

A vehicle powertrain includes a propulsion unit having a propulsion unit auxiliary brake, a transmission, driven wheels and a control unit arranged to control at least the transmission, where the propulsion unit is drivingly connected to the driven wheels via a clutch and different engagable gear ratios in the transmission. The control unit is arranged to perform the following steps when upshifting: A corresponding method, a computer program, a computer readable medium, and a control unit for controlling the powertrain are also provided.

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Gråbo, Sweden

Johan Fries