| 摘要 |
<p>The invention is directed to a system for determining the changes in gear ratio for an automatic transmission of a vehicle. Such an automatic transmission can be a fully automatic shifting step transmission or a known continuously variable transmission or an automated manual shift transmission. For determining the changes in gear ratio, a detection device for detecting the vehicle road speed and a determination device for determining the gear ratio changes of the automatic transmission are provided at least in dependence upon a first adaptation quantity. The essence of the invention is that the first adaptation quantity is determined from a time-dependent trace of the road speed of the vehicle. With the system, information is provided as to whether the vehicle is, at a particular point in time, in city traffic (low vehicle speed), on a country road (average vehicle speed) or on an expressway (high vehicle speed). This data is obtained in a simple manner via an evaluation of the trace of the road speed.</p> |
