Method of controlling a power train of a vehicle and device for carrying out said method

摘要

The present invention relates to a method and device for controlling a vehicle, more particularly, the power train of a compacting machine for earth moving operations, comprising a hydraulic travel pump and a hydraulic travel motor. Control is effected according to a specified control profile when a specified driving operation is to be carried out in that an adjustment of the travel pump is carried out which is independent of the rotational speed of the internal combustion engine. This makes it possible to retain, on the one hand, the rotational speed of the internal combustion engine in the case of abrupt stops of movement or changes in the direction of movement and, on the other hand, to adapt the rotational speed of the engine in the case of somewhat longer uninterrupted pauses between two changes in the traveling behavior, wherein comparatively large fluctuations in the rotational speed are avoided.

主权项

1. A method of controlling a power train of a vehicle, the power train comprising a travel pump, wherein an adjustment of a travel pump driven by an internal combustion engine is made and in which control of the power train takes place independently of a rotational speed of the internal combustion engine according to a specific control profile when a specific driving operation is to be carried out,
wherein the control is determined by an operational timing of an accelerator pedal, and the rotational speed of the internal combustion engine is fixed over a first specified period of time T1, and the control profile is set such that the rotational speed of the internal combustion engine follows a predetermined profile over a second specified period of time T2, and wherein the periods of time are adjusted such that during the succession of accelerating and braking operations within a typical period of time there is no rotational speed change, and further wherein typical periods of time are determined dynamically, in that during operation, frequently repeated driving and accelerating operations and/or driving cycles are determined, from which the typical periods of time for the current operation are derived.