Method for controlling braking of a vehicle

Abstract

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.