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:
Oct. 20, 2015
Filed:
Oct. 20, 2009
David P. Sczomak, Troy, MI (US);
David J. Cleary, Shanghai, CN;
Junseok Chang, Rochester Hills, MI (US);
David P. Sczomak, Troy, MI (US);
David J. Cleary, Shanghai, CN;
Junseok Chang, Rochester Hills, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
A cylinder deactivation system comprises a fuel injection module and a cold start control module. The fuel injection module injects a desired amount of fuel into a cylinder of an engine during engine cranking. The cold start control module maintains an intake valve and an exhaust valve associated with the cylinder in respective closed positions while the desired amount of fuel is injected when at least one of an air temperature and a coolant temperature is less than a predetermined cold start temperature.