Invention Application
- Patent Title: CHANGE-OF-MIND SHIFT CONTROL OF A DUAL-CLUTCH TRANSMISSION
- Patent Title (中): 双离合器变速器的变更换档控制
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Application No.: US14477199Application Date: 2014-09-04
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Publication No.: US20160069453A1Publication Date: 2016-03-10
- Inventor: Harinath Atmaram , Ronald W. Van Diepen , Matthew D. Whitton , Mateusz Nowak
- Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
- Main IPC: F16H61/04
- IPC: F16H61/04 ; F16H61/688 ; F16H59/46 ; F16H61/06

Abstract:
A vehicle includes an engine, a dual-clutch transmission (DCT), and a controller. The controller executes instructions embodying a method to control a requested change-of-mind shift of the DCT to a second desired gear state. The requested change-of-mind shift is initiated after a prior-requested but not yet fully-executed shift of the DCT to a first desired gear state. Execution of the instructions causes the controller to detect the requested change-of-mind shift, identify the second desired gear state, and abort the prior-requested shift to the first desired gear state immediately upon identifying the second desired gear state. The controller also shifts the DCT to the second desired gear state using a calibrated shift profile corresponding to the detected change-of-mind shift. The calibrated shift profile describes required oncoming and offgoing clutch torques needed for achieving the second desired gear state. Engine speed control may be used to synchronize engine and input shaft speeds.
Public/Granted literature
- US09416869B2 Change-of-mind shift control of a dual-clutch transmission Public/Granted day:2016-08-16
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