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:
Sep. 12, 2017
Filed:
Mar. 09, 2009
Chol-bum M. Kweon, Rochester, MI (US);
Frederic Anton Matekunas, Troy, MI (US);
Ibrahim Haskara, Macomb, MI (US);
Yue-yun Wang, Troy, MI (US);
Ognyan N. Yanakiev, Canton, MI (US);
Donald Terry French, Warren, MI (US);
Paul Anthony Battiston, Clinton Township, MI (US);
Chol-Bum M. Kweon, Rochester, MI (US);
Frederic Anton Matekunas, Troy, MI (US);
Ibrahim Haskara, Macomb, MI (US);
Yue-Yun Wang, Troy, MI (US);
Ognyan N. Yanakiev, Canton, MI (US);
Donald Terry French, Warren, MI (US);
Paul Anthony Battiston, Clinton Township, MI (US);
GM Global Technology Operations LLC, Detroit, MI (US);
Abstract
An engine control system includes an engine calibration module that sets fuel injection timing based on one of N cetane number (CN) values, wherein N is an integer greater than one. A combustion noise module generates a combustion noise signal based on cylinder pressure in a compression ignition (CI) engine during combustion. A fuel quality determination module compares the combustion noise signal to N predetermined combustion noise levels corresponding to the N CN values, and that selects the one of the N CN values based on the comparison.