Method for the operation of a drivetrain

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

2011-08-23

2011-08-23

Young, Edwin A (Department: 3655)

Interrelated power delivery controls, including engine control

Transmission control

Transmission controlled by engine

C475S121000

Reexamination Certificate

active

08002669

ABSTRACT:
A method for operating a motor vehicle drivetrain comprising at least an automatic transmission and a drive assembly. The automatic transmission includes at least five shifting elements to transmit torque and/or power. In each forward and reverse gear, three shifting elements are engaged and the remaining two shifting elements are disengaged. 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: 7416515 (2008-08-01), Iriyama 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: 2007/0287585 (2007-12-01), Steinhauser et al.
patent: 2007/0287588 (2007-12-01), 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-2622695