Invention Application
- Patent Title: PREDICTIVE CONTROL OF A CHANGE-OF-MIND-SHIFT MANEUVER
- Patent Title (中): 改变移动电话的预测控制
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Application No.: US14818917Application Date: 2015-08-05
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Publication No.: US20170037957A1Publication Date: 2017-02-09
- Inventor: Dara Monajemi , Brian H Fiore , Jeremy V Horgan
- Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
- Applicant Address: US MI Detroit
- Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
- Current Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
- Current Assignee Address: US MI Detroit
- Main IPC: F16H61/02
- IPC: F16H61/02

Abstract:
A system includes a torque converter having a turbine, a transmission having friction clutches and an input member connected to the turbine, and a controller. The controller is programmed to control a change-of-mind shift maneuver of the transmission. By executing a method, the controller detects the change-of-mind shift maneuver, predicts an acceleration profile of the turbine for a next-requested shift of the detected shift maneuver as a function of a calibrated desired shift time and an output speed of the transmission, calculates a shift control value for a next-requested shift of the shift maneuver using the predicted acceleration profile, and executes the next-requested shift via the clutches using the calculated shift control value. The shift maneuver may be a skip-at-sync quick shift-to-quick shift or power downshift-to-power downshift. The shift value may be a clutch pressure for an offgoing holding clutch or a torque management level from an engine.
Public/Granted literature
- US09869387B2 Predictive control of a change-of-mind-shift maneuver Public/Granted day:2018-01-16
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