Invention Grant
- Patent Title: Transmission upshift control method
- Patent Title (中): 变速箱升档控制方法
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Application No.: US11535594Application Date: 2006-09-27
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Publication No.: US07789798B2Publication Date: 2010-09-07
- Inventor: Gang Chen
- Applicant: Gang Chen
- Applicant Address: US MI Auburn Hills
- Assignee: Chrysler Group LLC
- Current Assignee: Chrysler Group LLC
- Current Assignee Address: US MI Auburn Hills
- Agent Ralph E. Smith
- Main IPC: F16H61/26
- IPC: F16H61/26

Abstract:
A method of controlling an upshift in a transmission having a main box and a compounder that has at least one gearset and at least one friction element separate from the main box includes initiating an upshift in the main box including application of at least one friction element (e.g. a clutch) in the main box, and releasing a friction element (e.g. a clutch) in the compounder providing a swap shift. The duty cycles of solenoids associated with the releasing and applying elements may be alternately controlled in open loop and closed loop fashion to improve the quality of the shift.
Public/Granted literature
- US20080076634A1 Transmisson Upshift Control Method Public/Granted day:2008-03-27
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