HYDRAULIC CONTROL METHOD DURING TIP IN BEING STATIC SHIFT AND APPARATUS THEREOF

摘要

Turbine torque is computed in case duty jumping condition is met. A duty jumping amount is computed based on computed turbine torque and detected automatic transmission fluid temperature. Hydraulic duty supplied to an oncoming clutch is controlled according to the computed duty jumping amount. Whether static shifting has been started is determined based on detected sensor signal including signal for automatic transmission fluid temperature. Whether a duty jump condition is met is then determined in case static shifting has been started. An independent claim is also included for a hydraulic control apparatus for controlling accelerator tip-in during static shifting of automatic transmission.