Measuring and testing – Internal combustion engine or related engine system or... – Electrical system
Reexamination Certificate
2011-04-12
2011-04-12
Kirkland, III, Freddie (Department: 2855)
Measuring and testing
Internal combustion engine or related engine system or...
Electrical system
C073S023310, C073S035080, C073S114550
Reexamination Certificate
active
07921704
ABSTRACT:
Alcohol concentration level of flex fuel is estimated based upon in-cylinder ionization signals. The in-cylinder ionization signals are integrated and the rotational completion point of a chosen percentage of the integration total is identified as the integration location for the operating conditions under observation. The calculated integration location correlates with alcohol concentration level of flex fuel, and the integration calculations provide a basis for a virtual flex fuel sensor that provides calculated estimates of alcohol concentration rather than direct sensing using an expensive physical flex fuel sensor.
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Daniels Chao Fu
Mammen, Jr. William Charles
Zhang Mengyang
Zhu Guoming George
Dickinson Wright PLLC
Kirkland, III Freddie
Visteon Global Technologies Inc.
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