Electrically variable transmission having two planetary gear...

Details Electrically variable transmission having two planetary gear... Electrically variable transmission having two planetary gear...

2007-05-22

2007-05-22

Lewis, Tisha (Department: 3681)

Planetary gear transmission systems or components

Input from independent power sources

Including electric motor input

C475S004000

Reexamination Certificate

active

11112131

ABSTRACT:
The electrically variable transmission family of the present invention provides low-content, low-cost electrically variable transmission mechanisms including first and second differential gear sets, a battery, two electric machines serving interchangeably as motors or generators, and five selectable torque-transfer devices. The selectable torque transfer devices are engaged singly or in pairs to yield an EVT with a continuously variable range of speeds (including reverse) and four mechanically fixed forward speed ratios. The torque transfer devices and the first and second motor/generators are operable to provide five operating modes in the electrically variable transmission, including battery reverse mode, EVT reverse mode, reverse and forward launch modes, continuously variable transmission range mode, and fixed ratio mode.

REFERENCES:
patent: 5558595 (1996-09-01), Schmidt et al.
patent: 5931757 (1999-08-01), Schmidt
patent: 6387004 (2002-05-01), Parrish
patent: 6478705 (2002-11-01), Holmes et al.
patent: 6527658 (2003-03-01), Holmes et al.
patent: 6852053 (2005-02-01), Nakano et al.
patent: 7004868 (2006-02-01), Oshidari et al.
patent: 7081060 (2006-07-01), Hata et al.
patent: 2005/0014592 (2005-01-01), Mattsson
patent: 2005/0221939 (2005-10-01), Takami et al.

Affiliated with

Also associated with

Rating

Electrically variable transmission having two planetary gear... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Electrically variable transmission having two planetary gear..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electrically variable transmission having two planetary gear... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3730615