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. 05, 2013
Filed:
Jul. 08, 2010
Qi MA, Farmington Hills, MI (US);
Robert Douglas Shafto, New Hudson, MI (US);
Michael Simon, Plymouth, MI (US);
Julian R. Verdejo, Farmington, MI (US);
Qi Ma, Farmington Hills, MI (US);
Robert Douglas Shafto, New Hudson, MI (US);
Michael Simon, Plymouth, MI (US);
Julian R. Verdejo, Farmington, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A hybrid powertrain includes an internal combustion engine, an electro-mechanical transmission and an electric machine. In an engine starting routine, flow control devices located proximate each combustion chamber in the engine initially restrict airflow into the cylinders to allow for a starter motor to rotate the engine at lower expansion and compression torque whereafter rotation of the engine is transitioned to the electric machine.