Method for the operation of a drivetrain

Details Method for the operation of a drivetrain Method for the operation of a drivetrain

2007-06-07

2010-10-12

Lewis, Tisha D (Department: 3655)

Interrelated power delivery controls, including engine control

Transmission control

Including fluid drive

C477S069000, C477S070000, C477S071000

Reexamination Certificate

active

07811199

ABSTRACT:
A method for operating a multi-speed automatic transmission of a motor vehicle. The automatic transmission has multiple shift elements for transmitting torque and/or power. When in forward and reverse gears, a first number of shift elements are engaged, and a second number of shift elements are disengaged. To improve the shift speed of successive upshifts and/or successive downshifts which are implemented in an overlapped manner, during a first upshift and/or downshift, at least one shift element, necessary for a successive second upshift and/or downshift, is prepared during the first upshift and/or downshift such that when the first upshift and/or downshift reaches a synchronous point, immediate implementation of the successive second upshift and/or downshift is possible. Depending on a gear change to be implemented, the first upshift and/or downshift from a current gear to a desired gear is preferably implemented as a multiple shift rather than a single shift.

REFERENCES:
patent: 5113343 (1992-05-01), Hunter et al.
patent: 6508742 (2003-01-01), Popp et al.
patent: 6577939 (2003-06-01), Keyse et al.
patent: 6623397 (2003-09-01), Raghavan et al.
patent: 6626786 (2003-09-01), Hayabuchi et al.
patent: 6832976 (2004-12-01), Nishida et al.
patent: 7048673 (2006-05-01), Shim et al.
patent: 7374512 (2008-05-01), Ayabe et al.
patent: 7559875 (2009-07-01), Steinhauser et al.
patent: 2003/0220170 (2003-11-01), Nishida et al.
patent: 2005/0282680 (2005-12-01), Soh
patent: 2006/0046892 (2006-03-01), Bucknor et al.
patent: 2007/0129211 (2007-06-01), Steinhauser et al.
patent: 199 18 734 (2000-11-01), None
patent: 199 28 674 (2000-12-01), None
patent: 199 63 752 (2001-07-01), None
patent: 100 35 479 (2002-02-01), None
patent: 103 21 961 (2004-02-01), None
patent: 103 38 624 (2004-11-01), None
patent: 103 30 153 (2005-02-01), None
patent: 103 61 288 (2005-07-01), None
patent: 10 2004 001 380 (2005-08-01), None
patent: 10 2004 010 269 (2005-09-01), None
patent: 10 2005 008 383 (2005-09-01), None
patent: 10 2004 040 611 (2006-03-01), None
patent: 10 2004 041 507 (2006-03-01), None
patent: 10 2004 043 345 (2006-03-01), None
patent: 1 219 686 (2002-07-01), None
patent: 1 398 536 (2004-03-01), None
patent: 1 533 543 (2005-05-01), None
patent: WO-2004/097266 (2004-11-01), None
patent: WO-2005/065981 (2005-07-01), None

Affiliated with

Also associated with

Rating

Method for the operation of a drivetrain does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method for the operation of a drivetrain, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for the operation of a drivetrain will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4158888