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:
Feb. 21, 2012
Filed:
Sep. 29, 2008
Anthony H. Heap, Ann Arbor, MI (US);
Bin Wu, Troy, MI (US);
Wilfried Brunssen, Ypsilanti, MI (US);
Jason J Mcconnell, Ypsilanti, MI (US);
Kee Yong Kim, Ann Arbor, MI (US);
Brian R Medema, Waterford, MI (US);
Anthony H. Heap, Ann Arbor, MI (US);
Bin Wu, Troy, MI (US);
Wilfried Brunssen, Ypsilanti, MI (US);
Jason J McConnell, Ypsilanti, MI (US);
Kee Yong Kim, Ann Arbor, MI (US);
Brian R Medema, Waterford, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Daimler AG, Stuttgart, DE;
Chrysler LLC, Auburn Hills, MI (US);
Bayerische Motoren Werke Aktiengesellschaft, Munich, DE;
Abstract
A method for operating an engine includes defining a two-dimensional search region based upon an input power transmittable between the internal combustion engine and an electromechanical transmission. The method further includes iteratively dividing the two-dimensional search region into a plurality of subregions based upon one of the input power and the input speed, iteratively determining an engine operating point within each of the subregions, iteratively calculating an operating cost to operate the internal combustion engine and the electromechanical transmission to meet the operator torque request for each engine operating point within each of the subregions, and iteratively identifying the subregion having a minimum operating cost to meet the operator torque request. A preferred engine operating point is determined based upon the engine operating point within the identified subregion having the minimum operating cost to meet the operator torque request.