发明名称 |
Process and apparatus for controlling a continuously variable speed transmission |
摘要 |
The invention provides a method and apparatus for controlling a continuously variable speed transmission of a motor vehicle driven by an internal-combustion engine, by means of a control arrangement having a selecting device which simulates a stepped transmission by adjusting transmission ratios in according to a group of preset transmission ratios. To prevent repeated up and down shifting, a control arrangement is provided with a unit for detecting driving situations in which a transmission ratio shift according to the preset transmission rations would be too large, and also a unit for adjusting the preset transmission ratio. The recognition unit activates the adjustment unit as soon as the above-described driving situation occurs, and the adjustment unit then changes a preset transmission ratio so that the motive force is adapted to the present motive resistance, allowing the vehicle to achieve a positive longitudinal acceleration.
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申请公布号 |
US5655991(A) |
申请公布日期 |
1997.08.12 |
申请号 |
US19950418613 |
申请日期 |
1995.04.07 |
申请人 |
DR. ING. H.C.F. PORSCHE AG |
发明人 |
LARDY, PATRIC;SEIDEL, WILLI;PETERSMANN, JOSEPH |
分类号 |
F16H9/00;F16H59/14;F16H59/48;F16H61/02;F16H61/04;F16H61/10;F16H61/12;F16H61/662;(IPC1-7):B60K41/16 |
主分类号 |
F16H9/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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