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:
Jan. 19, 2016
Filed:
Feb. 03, 2014
Caterpillar Inc., Peoria, IL (US);
Praveen Shivshankar Chavannavar, Dunlap, IL (US);
Caterpillar, Inc., Peoria, IL (US);
Abstract
An exhaust emissions prediction system includes a catalytic device configured to receive a flow of exhaust and a downstream NOx sensor located downstream of the catalytic device. The downstream NOx sensor is sensitive to NOx and ammonia, and is configured to generate a measured value. The system also includes a controller connected to the downstream NOx sensor. The controller is configured to determine a predicted value for the downstream NOx sensor, determine a mass flow rate of the flow of exhaust into the catalytic device, adjust the mass flow rate based on the predicted value and the measured value, and determine at least one emissions characteristic downstream of the catalytic device using the adjusted mass flow rate.