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:
May. 29, 2012
Filed:
Feb. 11, 2009
Applicants:
Nicole Wermuth, Ann Arbor, MI (US);
Paul M. Najt, Bloomfield Hills, MI (US);
Hanho Yun, Oakland Township, MI (US);
Inventors:
Nicole Wermuth, Ann Arbor, MI (US);
Paul M. Najt, Bloomfield Hills, MI (US);
Hanho Yun, Oakland Township, MI (US);
Assignee:
GM Global Technology Operations LLC, Detroit, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02B 5/02 (2006.01); F02D 41/02 (2006.01); F02D 13/02 (2006.01);
U.S. Cl.
CPC ...
Abstract
A spark-ignition direct-injection internal combustion engine is controlled at low loads through split fuel injections and spark discharges including one injection and spark during a negative valve overlap period and another injection and spark during a compression phase of the engine cycle.