System and method of NOx abatement

US8037674B2 · kind B2 · utility

Assignee

• Delphi Technologies · US

Inventors

• Joachim Kupe · Davisburg, US
• James Zizelman · Honeoye Falls, US
• Jean Botti · Rochester Hills, US
• Haskell Simpkins · Cincinnati, US
• Mark Hemingway · Columbiaville, US
• William LaBarge · Bay City, US
• Thomas W. Silvis · Flushing, US
• John Kirwan · Troy, US
• Joseph V. Bonadies · Clarkston, US
• Kenneth Price · Brighton, US

Key dates

• Filing date: Feb 11, 2004
• Grant date: Oct 18, 2011
• Expiry date: Sep 17, 2027

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/12
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A NOX abatement system includes a first NOX adsorber capable of being disposed in-line and downstream of and in fluid communication with an engine. The NOX abatement system further includes a selective catalytic reduction catalyst disposed in-line and downstream of, and in direct fluid communication with, the first NOX adsorber. The selective catalytic reduction catalyst is capable of storing ammonia. An off-line reformer is disposed in selective communication with and upstream of the first NOX adsorber and the selective catalytic reduction catalyst. The reformer is capable of producing a reformate that includes primarily hydrogen and carbon monoxide.