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:
Jul. 22, 2008
Filed:
May. 27, 2005
Christopher D. Eick, Phoenix, AZ (US);
Timothy D. Mahoney, Chandler, AZ (US);
David D. Jones, Maumee, OH (US);
William Lorenz, Dowagiac, MI (US);
Christopher D. Eick, Phoenix, AZ (US);
Timothy D. Mahoney, Chandler, AZ (US);
David D. Jones, Maumee, OH (US);
William Lorenz, Dowagiac, MI (US);
Honeywell International Inc., Morristown, NJ (US);
Abstract
A fuel system () for a gas turbine engine () having a shaft () and requiring fuel to be supplied at a first rate for engine start up, the fuel system () including: a main fuel pump () for providing fuel to the gas turbine engine (), the main fuel pump () having an output varying with shaft speed, the output being at a windmilling rate when the engine () is windmilling, the windmilling rate being less than the first rate; and an auxiliary fuel pump () for providing fuel to the gas turbine engine () and having an auxiliary output rate greater than or equal to the difference between the first rate and the windmilling rate. A method of operating such a fuel system () is also disclosed.