Steven H Demoss

US Patent:

20100242495, Sep 30, 2010

Filed:

Mar 27, 2009

Appl. No.:

12/413088

Inventors:

Steven Howard DeMoss - San Diego CA, US
Robert Eleazar Mendoza - Poway CA, US
Roy Thomas Collins - San Diego CA, US

International Classification:

F02C 6/00
H02K 7/18
F02C 9/00

US Classification:

60801, 60772, 290 52, 701100

Abstract:

A method of operating a drive system for a load is disclosed. The drive system may have an electric motor/generator and a gas turbine engine. The engine may have a combustor, and main and pilot flow paths via which fuel is supplied to the combustor. The engine may be operable in low and standard emissions modes. A proportion of the fuel that is supplied to the combustor via the pilot flow path may be greater in the standard emissions mode than in the low emissions mode. The method may include determining an engine power requirement of the load, and whether the engine power requirement of the load is sufficiently large to operate the engine in the low emissions mode. Additionally, the method may include operating the electric motor/generator if the engine power requirement of the load is not sufficiently large to operate the engine in the low emissions mode.