Method for the operation of a drivetrain

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

2011-02-22

2011-02-22

Estremsky, Sherry L (Department: 3655)

Interrelated power delivery controls, including engine control

Transmission control

Transmission controlled by engine

C475S127000

Reexamination Certificate

active

07892144

ABSTRACT:
A method for operating a motor vehicle drivetrain with at least an automatic transmission and a drive motor. The automatic transmission includes at least five shifting elements to transmit torque and/or power. In each forward and reverse gear a maximum of two shifting elements are disengaged while the remaining shifting elements are engaged. Two consecutive gearshifts are carried out through selection of the five shifting elements. During a first gearshift, implemented as a multiple gearshift, a subsequent second gearshift, implemented as either a single or multiple gearshift, is prepared. During the first gearshift, a first shifting element is disengaged, a second shifting element is engaged, a third shifting element is prepared for disengagement in a subsequent second gearshift and a fourth shifting element is prepared for engagement. Further, during the first gearshift and the subsequent second gearshift, a fifth shifting element is retained in at least a substantially engaged state.

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: 6832976 (2004-12-01), Nishida et al.
patent: 2003/0220170 (2003-11-01), Nishida et al.
patent: 2004/0053737 (2004-03-01), Lee 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: 1 219 868 (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-2626851