Method for operating a drive train of a motor vehicle

Details Method for operating a drive train of a motor vehicle Method for operating a drive train of a motor vehicle

2007-05-17

2010-02-16

Lewis, Tisha D (Department: 3655)

Interrelated power delivery controls, including engine control

Transmission control

With clutch control

C477S180000, C477S906000, C701S065000, C701S067000

Reexamination Certificate

active

07662063

ABSTRACT:
In a method of operating a drive train of a motor vehicle including a drive motor with a multi-unit transmission including an unsynchronized main transmission and a synchronized output drive unit, wherein, for performing a shift in the unsynchronized main transmission, a speed synchronization is carried out by means of the drive motor for the engagement of a target gear and, in an emergency mode of the drive motor, a clutch arranged between the drive motor and the main transmission is disengaged, the output gear unit is placed into neutral, the target gear is engaged, the output drive unit is placed into a drive position and the clutch is at least partially engaged.

REFERENCES:
patent: 6428447 (2002-08-01), Onuki
patent: 6634983 (2003-10-01), Nishimura
patent: 2006/0211536 (2006-09-01), Guggolz et al.
patent: 2008/0034905 (2008-02-01), Hatori et al.
patent: 6 676 566 (1995-10-01), None
patent: WO 02/092378 (2002-11-01), None
patent: WO 03/036137 (2003-05-01), None
patent: WO 2004/037590 (2004-05-01), None

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