Two mode electrically variable transmission with equal...

Details Two mode electrically variable transmission with equal... Two mode electrically variable transmission with equal...

2005-07-22

2008-03-04

Estremsky, Sherry (Department: 3681)

Planetary gear transmission systems or components

Input from independent power sources

Including electric motor input

C475S149000, C903S911000

Reexamination Certificate

active

07338401

ABSTRACT:
An electrically variable transmission includes a power source, three differential gear sets, first and second motor/generators each connected to at least one of the gear sets, and torque-transmitting mechanisms. An input member transfers power from the power source through the differential gear sets to an output member. The torque-transmitting mechanisms are selectively engageable to provide an input-split first electrically variable mode having equal forward and reverse speed ratios for given input speeds and to provide substantially equal fixed forward and reverse speed ratios.

REFERENCES:
patent: 5931757 (1999-08-01), Schmidt
patent: 6010422 (2000-01-01), Garnett et al.
patent: 6090005 (2000-07-01), Schmidt et al.
patent: 6527658 (2003-03-01), Holmes et al.
patent: 7128675 (2006-10-01), Klemen et al.
patent: 7217211 (2007-05-01), Klemen et al.
patent: 2007/0105679 (2007-05-01), Tabata et al.

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