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. 05, 2007
Filed:
Sep. 02, 2005
Cristian E. Anghel, Mississauga, CA;
Ray M. Mcginley, Fountain Hills, AZ (US);
Cristian E. Anghel, Mississauga, CA;
Ray M. McGinley, Fountain Hills, AZ (US);
Honeywell International Inc., Morris Township, NJ (US);
Abstract
An apparatus () controls a synchronous machine () used to start an engine () during an engine start operation. The apparatus comprises: an exciter current control unit () for controlling exciter current output to the synchronous machine () during the engine start operation; and a main current control unit () for controlling main current output to the synchronous machine () during the engine start operation as a function of machine speed. In one implementation, the main current control unit () controls main current output to the synchronous machine () so that the synchronous machine () exhibits a reduced output torque during an initial torque application stage. The reduced viscous drag effects and reduced impact torque are beneficial to the engine system ().