Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Transmission control
Reexamination Certificate
2005-08-16
2005-08-16
Zanelli, Michael J. (Department: 3661)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
Transmission control
C701S054000, C477S118000
Reexamination Certificate
active
06931315
ABSTRACT:
A shift control apparatus for a vehicular automatic transmission provided with a fuel cut apparatus which cuts off fuel supplied to an engine when an engine speed exceeds a predetermined value during deceleration of a vehicle, and an automatic transmission in which a gear shift is achieved with a clutch-to-clutch downshift in which a hydraulic friction device to be released is released and a hydraulic friction device to be applied is applied, further includes a controller. The controller corrects, through learning control, an apply pressure of at least one of the hydraulic friction devices to be operated for the clutch-to-clutch downshift such that an amount of drop in a rotational speed of an input shaft of the automatic transmission decreases when that amount of drop exceeds a predetermined value during the clutch-to-clutch downshift.
REFERENCES:
patent: 5547437 (1996-08-01), Kamada et al.
patent: 5961421 (1999-10-01), Hoshiya et al.
patent: 6022293 (2000-02-01), Dourra et al.
patent: 6370465 (2002-04-01), Jeon
patent: 6491605 (2002-12-01), Saito et al.
patent: 6577940 (2003-06-01), Saito et al.
patent: 04-278844 (1992-10-01), None
patent: 11-287317 (1999-10-01), None
patent: 11-287318 (1999-10-01), None
Ayabe Atsushi
Sugimura Toshio
Toyota Jidosha & Kabushiki Kaisha
Zanelli Michael J.
LandOfFree
Shift control apparatus and shift control method for a... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Shift control apparatus and shift control method for a..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Shift control apparatus and shift control method for a... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3477321