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:
May. 19, 2015
Filed:
Apr. 13, 2012
Nandagopal Methil-sudhakaran, Dunlap, IL (US);
Daniel Reese Puckett, Peoria, IL (US);
Frank Lombardi, Metamora, IL (US);
Nandagopal Methil-Sudhakaran, Dunlap, IL (US);
Daniel Reese Puckett, Peoria, IL (US);
Frank Lombardi, Metamora, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
A common rail fuel system diagnostic algorithm is executed by an engine control and real time to detect and identify a faulty fuel system component. Rail pressure data is processed through a digital resonating filter having a resonance frequency corresponding to a fault signature. A peak magnitude and phase of the output from the digital resonating filter reveals a degradation level of a fuel injector, and a phase of the output identifies which fuel injector is faulted.