LOW GEAR-SHIFT CONTROL METHOD OF CONTINUOUSLY VARIABLE TRANSMISSION AT START

摘要

PURPOSE: A low gear shift control method is provided to shifts gear low by controlling the pressure of a driving pulley and a vertical motion pulley in the non-step variable speed gear of a stationary state. CONSTITUTION: Whether a non-step variable speed vehicle is a low speed state under a fixed vehicle speed or a stationary state is confirmed in a vehicle speed confirming step(S1). Whether a speed of the non-step variable speed vehicle is changed low or not when a vehicle speed is under the fixed vehicle speed is confirmed in a low gear shift control condition confirming step(S2). The pressure of a driving pulley and a driven pulley of the non-step variable speed vehicle is controlled when the speed of the non-step variable speed vehicle is not changed low(S3). Whether the speed of the non-step variable speed vehicle is changed low or not is confirmed through the pressure of the driving pulley(S5).