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:
Oct. 13, 2015
Filed:
Apr. 03, 2015
Williams International Co., L.l.c., Walled Lake, MI (US);
Ray D. Lickfold, Brighton, MI (US);
Gregg G. Williams, Walled Lake, MI (US);
Robert S. Thompson, Jr., White Lake, MI (US);
WILLIAMS INTERNATIONAL CO., L.L.C., Walled Lake, MI (US);
Abstract
A control schedule incorporating a relationship between corrected torque and inlet pressure is selected or determined responsive to a power-level command representative of a level of power to be transmitted to a controllable load by a single-spool turboshaft engine. At least a substantial portion of the control schedule provides for a flat-rated power level by the single-spool turboshaft engine substantially independent of associated inlet air pressure and inlet air temperature, and for at least one selectable mode of operation, the control schedule provides for minimizing or nearly minimizing a measure of fuel consumption, and for at least one other selectable mode of operation, the control schedule provides for operation at a substantially fixed level of rotational speed.