System and method for reducing wear during build-up of engine torque

Abstract

A method for wear-limiting torque build-up in a vehicle (100; 110) provided with an engine (230), a clutch configuration (235) and a gearbox (240). The method has steps of demanding (s410) a power train torque; guiding (s420) the torque build-up towards the power train torque demanded (Tqreq); responding to continuing torque build-up at a certain engine speed (Es) by only providing a reduced power train torque (Tqlimit) which is less than a maximum available engine torque (Tqmax); continuously deciding (s450) whether the vehicle is moving or not; then either further increasing the power train torque (Tq) by increasing the engine's speed (Es) if the prevailing power train torque (Tq) is substantially the same as the reduced power train torque (Tqlimit) and the vehicle (100) is not moving, or automatically activating (s460) the clutch configuration (235) to non-slipping operation if the prevailing power train torque is substantially the same as the reduced power train torque and the vehicle is not moving.

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