AUTOMATIC TRANSMISSION SHIFT CONTROL

专利名称：AUTOMATIC TRANSMISSION SHIFT

CONTROL

发明人：Pramod Kumar Jain,Balaram G.

Sankpal,Bradley Dean Riedle,James M.Merner

申请号：US09783116申请日：20010214

公开号：US20020111731A1公开日：20020815

专利附图：

摘要：An automatic transmission ratio shift control system and method for a

powertrain having a throttle-controlled engine and multiple-ratio gearing, torque flowpaths through the gearing being established and disestablished by pressure-operatedfriction elements, an electronic controller for establishing torque transitions between thefriction elements as ratio changes occur in the multiple-ratio gearing, the engine throttlebeing controlled by an electronic throttle control that is decoupled from the driver-controlled accelerator pedal, the transmission torque output being controlled by meansof a friction element capacity control strategy including a feed-forward torque termdetermined by changes in commanded torque, the slip duration during a ratio changebeing controlled by means of closed-loop engine torque control.

申请人：JAIN PRAMOD KUMAR,SANKPAL BALARAM G.,RIEDLE BRADLEYDEAN,MERNER JAMES M.

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