Invention Grant
- Patent Title: Method for the operation of a drivetrain
- Patent Title (中): 传动系的运行方法
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Application No.: US11804032Application Date: 2007-05-16
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Publication No.: US07674203B2Publication Date: 2010-03-09
- Inventor: Klaus Steinhauser , Christian Popp
- Applicant: Klaus Steinhauser , Christian Popp
- Applicant Address: DE Friedrichshafen
- Assignee: ZF Friedrichshafen AG
- Current Assignee: ZF Friedrichshafen AG
- Current Assignee Address: DE Friedrichshafen
- Agency: Davis & Bujold, P.L.L.C.
- Priority: DE102006026596 20060608
- Main IPC: F16H61/26
- IPC: F16H61/26

Abstract:
Method of operating a drivetrain, comprising at least an automatic transmission and a drive motor, for improving a speed of successive upshifts or successive downshifts in an overlap manner so that, during a first upshift or downshift, at least one shift element, required for a subsequent second upshift or downshift, is prepared during the first upshift or downshift and, when a synchronization point is reached, the subsequent second upshift or downshift can be carried out immediately. Two successive respective upshifts or downshifts can be carried out as an overlapping single shift by actuating first, second and third shift elements. Implementing the first and the second upshifts or downshifts so that actuation of the second shift element, from the first upshift or downshift to the subsequent second upshift or downshift, occurs via a minimum selection of a first alternative or by a maximum selection of a second alternative.
Public/Granted literature
- US20070287590A1 Method for the operation of a drivetrain Public/Granted day:2007-12-13
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