Measuring and testing – Internal combustion engine or related engine system or... – Lubricant condition
Reexamination Certificate
2007-12-12
2010-06-22
McCall, Eric S (Department: 2855)
Measuring and testing
Internal combustion engine or related engine system or...
Lubricant condition
C073S114380, C073S114520
Reexamination Certificate
active
07739903
ABSTRACT:
The present disclosure, in one implementation, is directed to a method of estimating composition of fuel in the fuel tank of a vehicle. A refuel event is detected. A determination is made whether a volume of fuel added to the fuel tank satisfies a first threshold. A fuel composition estimation is suspended if the refuel event satisfies the first threshold. A total volume of fuel is accumulated based on a plurality of refuel events satisfying the first threshold. A new fuel composition is estimated based on the accumulated total volume of fuel satisfying a second threshold.
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Carr Mark D.
Robinson Shuanita
Schipperijn Frank W.
GM Global Technology Operations Inc.
McCall Eric S
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