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. 19, 2019
Filed:
Mar. 13, 2015
Applicant:
GM Global Technology Operations Llc, Detroit, MI (US);
Inventors:
Jim Liu, Pudong, CN;
Yongsheng He, Sterling Heights, MI (US);
Assignee:
GM Global Technology Operations LLC, Detroit, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01L 1/34 (2006.01); F02B 29/08 (2006.01); F02D 41/14 (2006.01); F02D 41/24 (2006.01); F02D 41/00 (2006.01); F02B 25/14 (2006.01); F02D 13/02 (2006.01); F02B 23/10 (2006.01); F02M 26/21 (2016.01);
U.S. Cl.
CPC ...
F02B 29/08 (2013.01); F02B 25/145 (2013.01); F02D 13/0207 (2013.01); F02D 13/0219 (2013.01); F02D 13/0261 (2013.01); F02D 41/0007 (2013.01); F02D 41/1453 (2013.01); F02D 41/1456 (2013.01); F02D 41/1458 (2013.01); F02D 41/2451 (2013.01); F02B 23/104 (2013.01); F02D 2041/001 (2013.01); F02D 2200/0402 (2013.01); F02D 2200/0406 (2013.01); F02D 2200/0614 (2013.01); F02D 2200/1002 (2013.01); F02M 26/21 (2016.02); Y02T 10/144 (2013.01); Y02T 10/18 (2013.01);
Abstract
An internal combustion engine is described, and includes a method for operating that includes determining an observed carbon monoxide (CO) ratio in an exhaust gas feedstream, determining an observed in-cylinder scavenging based upon the observed CO ratio in the exhaust gas feedstream, and controlling, by a controller, control states for the variable cam phasing system to control opening times of engine intake valves in relation to closing times of engine exhaust valves based upon the observed in-cylinder scavenging.