Torsional damper for electrically-variable transmission with...

Details Torsional damper for electrically-variable transmission with... Torsional damper for electrically-variable transmission with...

2007-06-05

2007-06-05

Lorence, Richard M. (Department: 3681)

Interrelated power delivery controls, including engine control

Plural engines

Electric engine

C475S005000, C192S055610, C192S070170, C192S201000, C192S212000

Reexamination Certificate

active

11061106

ABSTRACT:
The present invention relates to a torsional damper for an electrically-variable transmission. The torsional damper is equipped with a lock-out clutch to directly couple the engine to the input shaft of the transmission. The electric motors provided with the electrically-variable transmission can serve to effectively cancel out engine compression pulses when the springs of the torsional damper are locked out. The present invention also includes damper springs of variable rates to effectively attenuate distinctive or inconsistent torque fluctuations when the engine is operating in displacement-on-demand mode.

REFERENCES:
patent: 3296887 (1967-01-01), Larsen
patent: 3380566 (1968-04-01), Cook
patent: 4624351 (1986-11-01), Lutz et al.
patent: 5009301 (1991-04-01), Spitler
patent: 5558589 (1996-09-01), Schmidt
patent: 6332521 (2001-12-01), Shoji
patent: 2005/0205381 (2005-09-01), Tryon et al.
patent: 2005/0205382 (2005-09-01), Tryon et al.
patent: 1396368 (2004-03-01), None

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