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. 13, 2015
Filed:
Nov. 12, 2008
Wajdi B. Hamama, Whitmore Lake, MI (US);
Craig M. Sawdon, Williamston, MI (US);
Eric Ferch, Northville, MI (US);
Hamid M. Esfahan, Ann Arbor, MI (US);
John F. Van Gilder, Webberville, MI (US);
Brian D. Francis, Fenton, MI (US);
Anthony E. Cubr, Fenton, MI (US);
Wajdi B. Hamama, Whitmore Lake, MI (US);
Craig M. Sawdon, Williamston, MI (US);
Eric Ferch, Northville, MI (US);
Hamid M. Esfahan, Ann Arbor, MI (US);
John F. Van Gilder, Webberville, MI (US);
Brian D. Francis, Fenton, MI (US);
Anthony E. Cubr, Fenton, MI (US);
GM Global Technology Operations LLC, Detriot, MI (US);
Abstract
A knock diagnostic module having a knock module that increments a sample count when a cylinder firing signal corresponding to a first cylinder is received and selectively increments a knock count based on a knock detection signal that corresponds to the cylinder firing signal of the first cylinder A knock analysis module analyzes the knock count of the first cylinder when the sample count of the first cylinder reaches a predetermined value and selectively generates an excessive knock signal when the knock count exceeds a predetermined threshold. A remedial action module selectively performs a remedial action based on the excessive knock signal.