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:
May. 31, 2022
Filed:
Aug. 21, 2020
Carthel C. Baker, Daytona Beach, FL (US);
Brett Flannery, Poplar Grove, IL (US);
Robert Mazza, Houston, TX (US);
Austin Wade Mueller, Clinton, WI (US);
Michael L. Hahn, Fort Collins, CO (US);
Grzegorz Pelc, Cracow, PL;
Carthel C. Baker, Daytona Beach, FL (US);
Brett Flannery, Poplar Grove, IL (US);
Robert Mazza, Houston, TX (US);
Austin Wade Mueller, Clinton, WI (US);
Michael L. Hahn, Fort Collins, CO (US);
Grzegorz Pelc, Cracow, PL;
Woodward, Inc., Fort Collins, CO (US);
Abstract
A passive flow splitting system for use in a turbine engine control system to provide split fuel flow to two fuel manifolds to supply primary and secondary fuel injectors for the particular combustion zones thereof utilizing intentionally different split ratios dependent on ascending or descending combustion fuel flow is provided. The system includes a passive fuel divider valve (FDV) that includes a primary piston and a secondary piston. The primary piston is moveable independently from the secondary piston during a portion of its stroke, and is hydro-locked to the secondary piston during another portion of its stroke. An ecology valve is also provided to purge the fuel from the primary and/or secondary manifolds during different modes of operation. A transfer valve is included to control the position of ecology piston of the ecology valve.