Internal-combustion engines – Charge forming device – Exhaust gas used with the combustible mixture
Reexamination Certificate
2007-03-06
2010-10-12
Cronin, Stephen K (Department: 3747)
Internal-combustion engines
Charge forming device
Exhaust gas used with the combustible mixture
C701S101000, C701S102000, C060S605100, C060S605200
Reexamination Certificate
active
07810476
ABSTRACT:
The invention comprises a method and an article of manufacture to estimate exhaust gas temperature of an internal combustion engine during ongoing operation of the engine. This comprises determining states of a plurality of parameters of a combustion charge. A heat release of the combustion charge is estimated based thereon, and an exhaust gas temperature is estimated based upon the estimated heat release. Exemplary parameters of the combustion charge comprise engine speed, mass air flowrate, engine fueling and fuel injection timing, and, recirculated exhaust gas fraction.
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He Yongsheng
Wang Yue-Yun
Coleman Keith
Cronin Stephen K
GM Global Technology Operations Inc.
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