Controlling automatic gearbox for motor vehicle when changing up designed as overlapping changes so that regulating unit connecting with an electronic gearbox control

摘要

The method of control is carried out, so that a previously computed actual turbine rpm gradient (ng t actual) or a value equivalent to this is brought into correspondence with a preselected desired turbine rpm gradient (ng t desired) or a value equivalent to this, in such a manner. So that with a change to a higher gear independent of an existing thrust drive (vehicle wheels turbing engine) or propulsive drive (engine torque) an actual pressure (p ab, p zu) is given in the couplings (k ab, k zu). Which is varied depending on the actual turbine rpm gradient (ng t actual) or the value equivalent to this and its deviation from the desired turbine rpm gradient (ng t desired) or the value equivalent to this. So that for the couplings (k an, k zu) respective minimum pressures (p ab, p zu) are provided. By the reaching of which, the regulating unit raises the pressure (p ab, p zu) in the respective other coupling (k ab, k zu).