A road surface friction coefficient calculator is to detect a coefficient of friction on a road surface. A braking force calculator is to detect the braking force of a vehicle. A decelerating calculator is to determine whether the vehicle transitions to a decelerating travel mode. The pulley pressure controller is to control pulley pressure in a belt-driven continuously variable transmission. The pulley pressure controller is to increase the pulley pressure by an additional amount when the decelerating calculator determines the vehicle transitions to the decelerating travel mode while the coefficient of friction detected by the road surface friction coefficient calculator is equal to or lower than a reference value. The pulley pressure controller is to reduce the additional amount when the braking force calculator detects an increase in the braking force in the decelerating travel mode.
Pulley pressure control apparatus for belt-driven continuously variable transmission
2018-03-13
Patent
Elektronische Ressource
Englisch
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