Two mode electrically variable transmission with equal...

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

2007-05-15

2007-05-15

Le, David D. (Department: 3681)

Planetary gear transmission systems or components

Input from independent power sources

Including electric motor input

C475S276000, C475S280000, C180S065230, C180S065510, C180S065700

Reexamination Certificate

active

11187524

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 a compound, power-split second electrically variable mode. Torque provided from the power source is added to torque provided from the second motor generator in both forward and reverse electrically variable modes.

REFERENCES:
patent: 5730676 (1998-03-01), Schmidt
patent: 5931757 (1999-08-01), Schmidt
patent: 6527658 (2003-03-01), Holmes et al.
patent: 6551208 (2003-04-01), Holmes et al.
patent: 6953409 (2005-10-01), Schmidt et al.
patent: 7128675 (2006-10-01), Klemen et al.

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