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    • 54. 发明专利
    • DE19611840A1
    • 1997-10-02
    • DE19611840
    • 1996-03-26
    • BOSCH GMBH ROBERT
    • KRONENBERG KLEMENSPOLJANSEK MARKO
    • F16H59/08F16H59/14F16H59/44F16H61/02F16H59/18F16H59/36
    • The invention proceeds from a system for determining the changes in gear ratio for an automatic transmission of a vehicle. In the system, at least two different pregiven associations (shift programs) are selected in dependence upon the detected vehicle speed and the detected accelerator pedal position. The selection of these associations (shift program) takes place with the aid of a specific adaptation quantity. The essence of the invention is in the determination of this adaptation quantity and therefore in the selection of the different shift programs. According to the invention, the selection of the associations or shift programs takes place in such a manner that one of the two associations is set as the base adjustment, that is, as the base shift program. The other association, or in the case of several alternative associations, the other associations are set for only a specific time duration. After this time duration has elapsed, the system of the invention automatically returns to the base setting.