Internal-combustion engines – Charge forming device
Reexamination Certificate
2006-01-31
2008-10-07
Cronin, Stephen K. (Department: 3747)
Internal-combustion engines
Charge forming device
C060S039281, C060S039010, C060S793000
Reexamination Certificate
active
07431015
ABSTRACT:
A method and system for controlling fuel flow in a fuel metering system that includes a metering valve and a proportional bypass valve that produces a differential pressure error across the metering valve includes supplying a first fraction of fuel through the metering valve. A second fraction of the fuel is directed through the proportional bypass valve. The differential pressure error produced by the bypass valve is determined, and fuel flow through the supply line is controlled by adjusting the metering valve based at least in part on the determined differential pressure error, and by adjusting the proportional bypass valve to maintain a substantially constant metering valve differential pressure across the metering valve.
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Lewis Steven A.
Mahoney Timothy D.
Cronin Stephen K.
Honeywell International , Inc.
Hufty J. Page
Ingrassia Fisher & Lorenz P.C.
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