Hybrid powertrain motor vehicle with homogenous charge...

Details Hybrid powertrain motor vehicle with homogenous charge... Hybrid powertrain motor vehicle with homogenous charge...

2006-09-12

2006-09-12

Ellis, Christopher P. (Department: 3618)

Motor vehicles

Power

Electric

C180S065230, C180S065310, C903S905000

Reexamination Certificate

active

07104349

ABSTRACT:
A Homogenous Charge Compression Ignition (HCCI) engine is used in conjunction with a hybrid powertrain. Power production from the HCCI engine in operation may be decoupled from, or assisted in, responding to driver power demand. In this manner, the HCCI engine: (i) is relieved from the need to quickly adapt to changes in driver power demand, and/or (ii) is allowed to more slowly transition between power levels reflective of the vehicle power demands, with a secondary power source providing the more immediate power response to driver demands. In addition, driver power demand greater than what can be provided by the HCCI engine may preferably be met through the addition of power from the powertrain's reversible secondary power source (e.g. one or more reversible electric motor/generator(s) or reversible hydraulic pump/motor(s)), thereby avoiding the need for full load operation by the HCCI engine. In this manner, driver power demand may be met by the vehicle with commercially acceptable responsiveness, while simultaneously enabling the use of a highly efficient low emission HCCI engine.

REFERENCES:
patent: 5495912 (1996-03-01), Gray et al.
patent: 6230494 (2001-05-01), Botti et al.
patent: 6570265 (2003-05-01), Shiraishi et al.
Aceves, Salvador M., et. al., “HCCI Combustion: Analysis and Experiments,” SAE 2001-01-2077, (2001).
Sun, Ruonan, et al., “An HCCI Engine: Power Plant for a Hybrid Vehicle,” SAE 2004-01-0933 (2004).
South Coast Air Quality Management District, Agenda No. 6, Board Meeting Date Sep. 15, 2000.

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