Data processing: vehicles – navigation – and relative location – Vehicle control – guidance – operation – or indication – Transmission control
Reexamination Certificate
2011-08-16
2011-08-16
To, Tuan C (Department: 3663)
Data processing: vehicles, navigation, and relative location
Vehicle control, guidance, operation, or indication
Transmission control
C701S070000, C475S005000, C475S116000, C180S065210, C180S065275, C180S338000
Reexamination Certificate
active
08000865
ABSTRACT:
A method is provided for transitioning from an initial to a final transmission mode in an electrically variable transmission (EVT), and includes transitioning to an intermediate mode having an additional speed degree of freedom (DOF), changing a transmission ratio, and engaging a clutch to shift to the final mode. The modes include input and compound split, fixed gear ratio, and electric torque converter (ETC), with and without input from an engine. Output torque is maintained by adjusting a charge on an energy storage device. A brake grounds an input member of the EVT. The EVT has the input member, an output member, a stationary member, and first and second motor/generators. An algorithm transitions between modes by releasing at least one clutch to transition to a mode having an extra speed degree of freedom (DOF), and utilizing the extra speed DOF to change the ratio of the EVT.
REFERENCES:
patent: 7481733 (2009-01-01), Cho et al.
patent: 7517296 (2009-04-01), Foster et al.
patent: 7610137 (2009-10-01), Kwon
patent: 7769515 (2010-08-01), Lee
patent: 2005/0080535 (2005-04-01), Steinmetz et al.
patent: 2006/0289212 (2006-12-01), Haruhisa
patent: 2007/0117671 (2007-05-01), Long et al.
patent: 2007/0151781 (2007-07-01), Kuang et al.
patent: 2007/0179004 (2007-08-01), Endo
patent: 2007/0221432 (2007-09-01), Fournier et al.
patent: 2008/0176706 (2008-07-01), Wu et al.
patent: 2009/0156345 (2009-06-01), Ishimori et al.
patent: 2009/0275439 (2009-11-01), Kersting
patent: 2006183682 (2006-07-01), None
patent: 2006335294 (2006-12-01), None
patent: 2007168679 (2007-07-01), None
Jeongmin Kim, Namdoo Kim, Sungtae Cho, Hyunsoo Kim; “Motor-Generator Control of an Electro-mechanical Variable Transmission for a Hybrid Electric Vehicle”; Digital Object Identifier: 10.1109/SICE.2006.315113; Publication Year: 2006 , pp. 2420-2423.
Szumanowski, A., Yuhua, C., Piorkowski, P.; “Analysis of different control strategies and operating modes of compact high planetary transmission drive”; Digital Object Identifier: 10.1109/VPPC.2005.1554631; Publication Year: 2005.
Conlon Brendan M.
Sah Jy Jen F.
GM Global Technology Operations LLC
Quinn Law Group PLLC
To Tuan C
LandOfFree
Method and apparatus for transitioning an electrically... 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 and apparatus for transitioning an electrically..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for transitioning an electrically... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2790843