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. 26, 2019
Filed:
Sep. 08, 2017
GM Global Technology Operations Llc, Detroit, MI (US);
Other;
Abstract
A method for controlling an internal combustion engine that includes sensing a characteristic of combustion in a cylinder of the engine, generating a combustion characteristic signal from the sensed characteristic, performing a principal component analysis on the combustion characteristic signal and a predetermined combustion characteristic trace to determine first mode coefficients for the combustion characteristic signal and the predetermined combustion characteristic trace, determining a difference between the first mode coefficient of the combustion characteristic signal and the first mode coefficient of the predetermined combustion characteristic trace, and controlling the internal combustion engine based upon the difference.