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:
Apr. 21, 2015
Filed:
Jan. 30, 2012
Paul Moonjelly, Columbus, IN (US);
Richard A. Booth, Columbus, IN (US);
Lester L. Peters, Columbus, IN (US);
Jeffrey C. Huang, Greenwood, IN (US);
Phanindra V. Garimella, Bloomington, IN (US);
Paul Moonjelly, Columbus, IN (US);
Richard A. Booth, Columbus, IN (US);
Lester L. Peters, Columbus, IN (US);
Jeffrey C. Huang, Greenwood, IN (US);
Phanindra V. Garimella, Bloomington, IN (US);
Cummins Intellectual Property, Inc., Minneapolis, MN (US);
Abstract
This disclosure provides system and method that can determine hydraulic start of injection (SOI) in engines using an in-cylinder pressure sensor. The system and method determine apparent heat release rate (AHRR) curve data for the cylinder from the pressure information provided by the in-cylinder pressure sensors, and the hydraulic SOI from the derivative of the AHRR curve data. The system and method provide diagnostic, control and/or compensation opportunities for fuel injector operation in high pressure fuel rail engine systems without use of expensive or complex fuel injector components.