PROCESS TO EVALUATE START-UP FOR AN AUTOMATIC GEARBOX

摘要

The invention relates to a process to evaluate start-up for an automatic vehicle gearbox, said process having the following steps: 1) a signal associated with an engine torque (M_M) or an engine speed (n_M) is emitted from an engine control device (27), and a signal associated with a torque (M_T) or a speed (n_T) of the turbine shaft (18) is emitted at the electronic gear control unit (11) by a measuring device (24) on a turbine shaft (18) of a converter (2) of the automatic gearbox (1); 2) the electronic gearbox control unit (11) determines a maximum value (Max) from time-related differences (DIFF(t)) between the engine torque (M_M) and the torque (M_T) of the turbine shaft (18) or the difference (DIFF(t)) between the engine speed (n_M) and the speed (n_T) of the turbine shaft (18); 3) a gear-change characteristic (SL) characterising a particular start-up style by comparing a theoretical driver-type value (FT_Soll_n) associated with the maximum (Max) with an actual driver-type value (FT_Ist) and the setting of a counter (39) is determined on the basis of the maximum value (Max) of the differences (DIFF(t)), said gear-change characteristic being meant to emit control signals to the hydraulic gearbox control unit (10).