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:
Jan. 09, 2007
Filed:
May. 14, 2004
Tung-ming Hsieh, Carmel, IN (US);
Gregory A. Hubbard, Brighton, MI (US);
Todd M. Steinmetz, Indianapolis, IN (US);
Tung-Ming Hsieh, Carmel, IN (US);
Gregory A. Hubbard, Brighton, MI (US);
Todd M. Steinmetz, Indianapolis, IN (US);
General Motors Corporation, Detroit, MI (US);
Abstract
A vehicular powertrain includes operatively coupled engine, electrically variable transmission and driveline. During normal operation when all motors are operating as expected, the engine is operated in a torque control mode in accordance with a torque command provided by a system controller to an engine controller and engine speed is controlled by the motors. During operation when all motors are not operating as expected, the engine is operated in a speed control mode in accordance with a speed command provided by the system controller to the engine controller and engine load torque is controlled by the operative motors.