Vorrichtung und Verfahren zum Steuern eines Schaltstufenwechsels eines automatischen Getriebes

摘要

A down-shift is carried out when a) the sum of a dry force of a vehicle and a predetermined value, is smaller than a running resistance, and b) when an accelerator opening is larger than a threshold value which is based on vehicle speed, road inclination, and speed change step (gear position).