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:
Dec. 18, 2018
Filed:
Nov. 27, 2017
Applicant:
GM Global Technology Operations Llc, Detroit, MI (US);
Inventors:
Michael J Lucido, Northville, MI (US);
Robert S Levy, Leonard, MI (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02P 5/14 (2006.01); F02P 5/15 (2006.01); F01N 3/20 (2006.01); F02P 5/00 (2006.01);
U.S. Cl.
CPC ...
F02P 5/1506 (2013.01); F01N 3/2006 (2013.01); F02P 5/00 (2013.01); F02P 5/14 (2013.01); F02P 5/151 (2013.01); F01N 2430/08 (2013.01); F01N 2900/1602 (2013.01);
Abstract
A method and a controller for controlling spark timing in a cold start condition for an engine in a vehicle propulsion system. The method includes determining whether the engine is in a cold start condition, and advancing spark timing before top dead center in a combustion cycle such that combustion heat is primarily received by a surface in a combustion chamber in the engine if the engine is in a cold start condition.