Control system for continuously variable transmission

摘要

A control system for a CVT comprises a controller arranged to compute an engine revolution condition on the basis of an engine revolution speed (NE) indicative signal, to compute actual and estimated engine outputs on the basis of the engine revolution condition, to compute a rotational change condition of the drive system, to compute an actual input load change amount (TINP) caused by the inertia by multiplying the actual rotational change condition detection value (dNE/dt) by a predetermined inertial constant (I), to compute an estimated input load change amount (TINR) by multiplying the estimated rotational change condition detection value (dNPri/dt) by a predetermined inertia coefficient (I), to select larger one of the actual input load change amount and the estimated input load change amount as the input load change amount (TIN) for outputting a command signal, and to output the command signal to a line pressure duty valve on the basis of the engine output (TE) and the selected input load change amount (TIN) so as to further accurately control a line pressure (PL).