| 摘要 |
The invention relates to a frictional engagement control in a motor vehicle with an automatic gearbox and a hydrodynamic converter (5). When a direction of travel is preselected, the actuating cylinder of the frictional coupling, e.g. a friction clutch or a gearbox brake, is prefilled until the friction surfaces bear on each other without any clearance and the frictional coupling for the predetermined direction of travel to be released is separated. The frictional coupling is then closed in a controlled manner, where, in a model-basing control algorithm, the rotation speed of the engine and converter turbine wheel and the moment of inertia of the engine and converter wheel and the torque of the motor, converter pump wheel, converter turbine wheel, subsidiary system consumers and frictional coupling and the converter characteristics are used as parameters or input values. |
