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. 13, 2016
Filed:
Feb. 26, 2015
Cummins Emission Solutions Inc., Columbus, IN (US);
Cary A. Henry, Helotes, TX (US);
Michael J. Ruth, Franklin, IN (US);
Cummins Emission Solutions Inc., Columbus, IN (US);
Abstract
A system and method includes an internal combustion engine capable of producing an exhaust stream and an aftertreatment system operationally coupled to the exhaust stream. The aftertreatment system includes an upstream selective reduction catalyst (SCR) component and a downstream SCR component that are positioned in substantially different thermal environments. The upstream and downstream SCR components are sized to fully treat the entire exhaust stream at a low temperature highest NOx conversion condition, and the downstream SCR component is sized to fully treat the entire exhaust stream at a high temperature highest NOx conversion condition.