Electric variable transmission for hybrid electric vehicles...

Details Electric variable transmission for hybrid electric vehicles... Electric variable transmission for hybrid electric vehicles...

2008-05-02

2011-11-29

Le, David D (Department: 3655)

Planetary gear transmission systems or components

With means to vary drive ratio or disconnect drive

Plural elements selectively braked

C475S275000, C475S330000

Reexamination Certificate

active

08066609

ABSTRACT:
The present disclosure provides a power split transmission with three forward Electric Variable Transmission (EVT) modes, one reverse EVT mode, and five fixed gears for use in hybrid electrical vehicles (HEV). The present disclosure utilizes two electric motors (“E-motors”), an engine, three planetary gear sets, three selectively engageable clutches, and two selectively engageable brakes. The clutches and brakes are engaged in different combinations to engage the different gears and EVT modes. In the five fixed gears, power is transmitted only on the mechanical path for the highest transmission efficiency. In the EVT modes, a part of the power is transmitted electrically. Additionally, the present disclosure includes a front E-motor designed allowing scalable E-motors and a modular transmission design and a center E-motor design.

REFERENCES:
patent: 6830531 (2004-12-01), Koenig et al.
patent: 7179187 (2007-02-01), Raghavan et al.
patent: 2003/0078126 (2003-04-01), Holmes et al.
patent: 2004/0121876 (2004-06-01), Usoro et al.
patent: 2006/0027413 (2006-02-01), Tabata et al.
patent: 2007/0042852 (2007-02-01), Bucknor et al.
patent: 2007/0225097 (2007-09-01), Raghavan et al.
patent: 2008/0227577 (2008-09-01), Goldschmidt et al.
patent: 2009/0275436 (2009-11-01), Kersting
patent: 2009/0275437 (2009-11-01), Kersting
patent: 2009/0275438 (2009-11-01), Kersting

Affiliated with

Also associated with

Rating

Electric variable transmission for hybrid electric vehicles... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Electric variable transmission for hybrid electric vehicles..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Electric variable transmission for hybrid electric vehicles... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4276305