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. 09, 2018
Filed:
Nov. 18, 2016
Applicant:
GM Global Technology Operations Llc, Detroit, MI (US);
Inventors:
Daniel G. Brennan, Brighton, MI (US);
Allen B. Rayl, Jr., Waterford, MI (US);
Brian K. Kowalczyk, Howell, MI (US);
Assignee:
Other;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02D 41/00 (2006.01); F02D 41/14 (2006.01); F02D 41/22 (2006.01); F02D 41/26 (2006.01); F02D 41/24 (2006.01);
U.S. Cl.
CPC ...
F02D 41/0087 (2013.01); F02D 41/00 (2013.01); F02D 41/009 (2013.01); F02D 41/1438 (2013.01); F02D 41/221 (2013.01); F02D 41/2403 (2013.01); F02D 41/26 (2013.01); F02D 2200/101 (2013.01); F02D 2200/1015 (2013.01);
Abstract
A method to adjust an oil control valve actuation response time using cylinder valve diagnostic results includes commanding an engine cylinder to deactivate/reactive when conditions are met and then detecting if a deactivation/reactivation response time failure has occurred by analyzing the cylinder diagnostics results. If a predetermined number of failures are detected at the cylinder within a predetermined number of engine cycles then the engine controller operates to adjust the oil control valve response time to improve the response time accuracy.