| 摘要 |
PCT No. PCT/DE98/00120 Sec. 371 Date Dec. 18, 1998 Sec. 102(e) Date Dec. 18, 1998 PCT Filed Jan. 15, 1998 PCT Pub. No. WO98/33673 PCT Pub. Date Aug. 6, 1998The invention proceeds from a control of the drive train of a motor vehicle having at least a drive unit and an automatic transmission. During driving operation, a desired value for the drive torque of the vehicle or for the transmission output torque is pregiven by the driver. The different operating points of the drive train are characterized by at least different output torques of the drive unit and rpm ratios and/or different output rpms of the drive unit. The essence of the invention is that, during driving operation, a set of evaluation quantities is determined for each possible operating point. One of the possible operating points is then selected as an optimal operating point via an optimization method based on the determined evaluation quantities. The transmission ratio, which belongs to this selected optimal operating point, is then adjusted on the transmission. As an alternative to adjusting the transmission ratio, it is understood that the output rpm of the drive unit can be adjusted by a change of the transmission ratio with this output rpm corresponding to the selected operating point.
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