Invention Grant
- Patent Title: Shift control systems and methods for an automatic transmission
- Patent Title (中): 换档控制系统和自动变速器的方法
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Application No.: US12692043Application Date: 2010-01-22
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Publication No.: US08308611B2Publication Date: 2012-11-13
- Inventor: Shashikanth Rangaraju , Robert L. Williams , Matthew D. Whitton
- Applicant: Shashikanth Rangaraju , Robert L. Williams , Matthew D. Whitton
- Assignee: GM Global Technology Operations LLC
- Current Assignee: GM Global Technology Operations LLC
- Main IPC: F16H61/26
- IPC: F16H61/26 ; G06F7/00

Abstract:
A transmission shift control system includes a transmission shift control module that executes an upshift or a closed-throttle downshift, a shift stage determination module, and a clutch control module. The stage determination module determines a stage of the upshift or the closed throttle downshift when a downshift is requested. The clutch control module determines a downshift type based on the stage of the upshift or the closed throttle downshift and selectively executes a downshift before the upshift or the closed throttle downshift is completed.
Public/Granted literature
- US20110183809A1 SHIFT CONTROL SYSTEMS AND METHODS FOR AN AUTOMATIC TRANSMISSION Public/Granted day:2011-07-28
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