Planetary gear transmission systems or components – Differential planetary gearing – Differential or nondifferential planetary combined with...
Reexamination Certificate
2007-06-05
2007-06-05
Le, David D. (Department: 3681)
Planetary gear transmission systems or components
Differential planetary gearing
Differential or nondifferential planetary combined with...
C477S005000, C074S329000, C074S330000, C074S331000, C074S333000, C074S336001, C074S339000, C074S661000, C074S664000, C180S065230, C180S065700
Reexamination Certificate
active
10920248
ABSTRACT:
The object of the invention is to provide a less expensive active transmission control system for an automobile, capable of disconnecting an engine, without increasing the number of dog clutches.In an active shift transmission, a second intermediate shaft is provided between a transmission input shaft connected with an engine and a transmission output shaft, and the transmission ratio is determined by the product of gear ratios of two sets of transmission gears. Further, a differential gear box is connected between both intermediate shafts and a motor is connected to the third shaft of this differential gear box, so that the engine torque is borne by the motor on a temporary basis, whereby active transmission is performed. When the transmission gear of the input shaft is released, the engine rotation loss at the time of regenerative braking can be eliminated by disconnecting the engine.
REFERENCES:
patent: 6666787 (2003-12-01), Doepke
patent: 6712734 (2004-03-01), Loeffler
patent: 6945893 (2005-09-01), Grillo et al.
patent: 2002/0189397 (2002-12-01), Sakamoto et al.
patent: 2004/0116243 (2004-06-01), Ibamoto et al.
patent: 2005/0120817 (2005-06-01), Sakamoto et al.
patent: 0845618 (1997-09-01), None
patent: 2002-204504 (2002-07-01), None
patent: 2003-072403 (2003-03-01), None
patent: 2003-113934 (2003-04-01), None
patent: WO 00/26559 (2000-11-01), None
Ibamoto Masahiko
Kuroiwa Hiroshi
Sakamoto Hiroyuki
Hitachi , Ltd.
Hitachi Car Engineering Co. Ltd.
Le David D.
LandOfFree
Active shift transmission, transmission control unit and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Active shift transmission, transmission control unit and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Active shift transmission, transmission control unit and... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3825597