| 摘要 |
The invention refers to a process for correcting the torque to which an engine is adjusted before a gear disengagement, preferably on the occasion of automated gear change of a stepped gearbox without using any clutch. Immediately after a gear has been disengaged, the engine is adjusted towards a zero torque (M0) which will maintain the engine speed (n) constant during the gear disengagement. This zero-torque level is stored in a matrix for the relevant operating point given by at least the engine speed (n) and the engine temperature (T). During a fixed measuring period after the gear disengagement when the gearbox is in neutral position, the acceleration of the engine when it is run with the relevant zero torque is detected. Thereafter any acceleration detected is converted to a corresponding torque, which represents an error in the modulated zero torque. The original zero-torque value is thereafter corrected by applying the detected incorrect torque so that before a subsequent gear disengagement the engine is modulated with a more correct value of the zero torque (M0). <IMAGE> |
