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:
Mar. 10, 2009
Filed:
May. 11, 2006
Kenneth J. Buslepp, Brighton, MI (US);
Douglas R. Verner, Sterling Heights, MI (US);
Randall J. Guild, Okemos, MI (US);
David S. Mathews, Howell, MI (US);
Kenneth J. Buslepp, Brighton, MI (US);
Douglas R. Verner, Sterling Heights, MI (US);
Randall J. Guild, Okemos, MI (US);
David S. Mathews, Howell, MI (US);
GM Global Technology Operations, Inc., Detroit, MI (US);
Abstract
An engine torque control system for balancing torque output across cylinders of an internal combustion engine includes a first module that determines a derivative term for each cylinder of the engine based on rotation of a crankshaft. A second module determines a torque correction for a first cylinder based on an average derivative term associated with the first cylinder. The second module adjusts a torque output of the first cylinder based on the torque correction and adjusts a torque output of a second cylinder based on the torque correction.