Internal-combustion engines – Charge forming device – Including exhaust gas condition responsive means
Reexamination Certificate
2008-11-24
2010-06-15
Huynh, Hai H (Department: 3747)
Internal-combustion engines
Charge forming device
Including exhaust gas condition responsive means
C123S435000
Reexamination Certificate
active
07735478
ABSTRACT:
A system and method for determining mass fraction burned in an internal combustion engine includes a plurality of engine sensors and a control module determining a ratio of specific heat from a combination of one or more from the group of exhaust gas temperature, injected fuel quantity, air quantity inside a cylinder, mass air flow, air fuel ratio, manifold pressure and a residual gas amount determined from the plurality of engine sensors. The control module includes a mass fraction burned module determining a mass fraction burned in response to a cylinder volume, and the ratio of specific heat. The control module controls an engine parameter based on mass fraction burned.
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Buslepp Kenneth J.
Dagci Oguz H.
GM Global Technology Operations Inc.
Huynh Hai H
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