Internal-combustion engines – Charge forming device – With fuel pump
Reexamination Certificate
2008-01-18
2010-06-15
Cronin, Stephen K (Department: 3747)
Internal-combustion engines
Charge forming device
With fuel pump
C123S00100A
Reexamination Certificate
active
07735476
ABSTRACT:
A method comprises detecting a status of a transfer pump for transferring fuel between a first fuel source and a second fuel source; receiving a fuel trim value and a vehicle operating parameter; and calculating a fuel composition of one of the first fuel source and second fuel source based on the fuel trim value, the transfer pump status and the vehicle operating parameter. A control module comprises a secondary pump transfer module detecting a status of a transfer pump for transferring fuel between a first fuel source and a second fuel source; and a fuel composition estimation module in communication with the secondary pump transfer module, receiving a fuel trim value and a vehicle operating parameter, and calculating a fuel composition of one of the first fuel source and second fuel source based on the fuel trim value, the transfer pump status, and the vehicle operating parameter.
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Avallone Louis A.
Carr Mark D.
Robinson Shuanita
Sell Jeffrey A.
Verdejo Julian R.
Cronin Stephen K
GM Global Technology Operations Inc.
Hamaoui David
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