The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 28, 2011
Filed:
Sep. 05, 2007
Paul W. Futa, Jr., North Liberty, IN (US);
Gregory A. Lafferty, Plymouth, IN (US);
David J. Lawrence, South Bend, IN (US);
David J. Tuttle, South Bend, IN (US);
Paul W. Futa, Jr., North Liberty, IN (US);
Gregory A. Lafferty, Plymouth, IN (US);
David J. Lawrence, South Bend, IN (US);
David J. Tuttle, South Bend, IN (US);
Honeywell International Inc., Morristown, NJ (US);
Abstract
A system and method provide dual level pressurization control of a fuel supply system based on whether fuel is being supplied to one or more secondary fuel loads. Fuel pump discharge backpressure is maintained above either a first minimum pressure value or a lower second minimum pressure value by determining whether fuel is being supplied to one or more secondary fuel loads. The fuel pump discharge pressure is maintained above the first minimum pressure value if it is determined that fuel is being supplied to the one or more secondary loads. The fuel pump discharge backpressure is maintained above the lower second minimum pressure value if it is determined that fuel is not being supplied to the one or more secondary loads.