Patent ID: 6406402
Filing Date: 2002-06-18
Classification: F02N,F16H,Y10T

Abstract:
An apparatus for controlling a pulley side-pressure to be applied to a drive pulley and a driven pulley of a belt type continuously variable transmission mechanism which is provided, in series with a starting clutch, in a transmission of a vehicle having a function of stopping engine idling so that an engine is automatically stopped under given conditions when the vehicle is at a standstill, said apparatus comprising:means for calculating a first belt transmission torque which corresponds to that output torque of the engine which is obtained from a rotational speed and a negative suction pressure of the engine; means for calculating a second belt transmission torque which corresponds to that transmission torque of the starting clutch which is obtained from an engaging force of the starting clutch; means for comparing the first belt transmission torque and the second belt transmission torque; and means for controlling a pulley side-pressure based on whichever is smaller between the first and second belt transmission torques at a time of vehicle start-up from a state of engine stopping.