Producing Vehicle Creep Through a Transmission Without a Torque Converter

A method for controlling creep in a vehicle having no transmission torque converter, includes operating an input clutch of the transmission at a desired clutch torque capacity, using a feed-forward engine torque to minimize the impact on the engine speed when additional load on the engine occurs fro...

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Bibliographische Detailangaben
Hauptverfasser: JIANG HONG, FODOR MICHAEL G, SHELTON MATTHEW J, LIU CHUNLIN, DAI ZHENGYU
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:A method for controlling creep in a vehicle having no transmission torque converter, includes operating an input clutch of the transmission at a desired clutch torque capacity, using a feed-forward engine torque to minimize the impact on the engine speed when additional load on the engine occurs from increasing the clutch torque capacity, producing a desired clutch slip by controlling engine idle speed, and achieving a desired vehicle speed by controlling the input clutch torque capacity.