Exhaust aftertreatment system with ammonia gas generator

US10458302B2 · kind B2 · utility

Assignees

• Tenneco Automotive Operating Company LLC · US
• Tenneco GmbH · DE

Inventors

• Mark DeVito · Vancouver, US
• Ryan A. Floyd · Big Rapids, US
• Adam J. Kotrba · Laingsburg, US
• Padmanabha Reddy Ettireddy · Canton, US
• Michael C. Bradford · Chelsea, US
• Bradley R. Fingland · Jackson, US
• John W. DeGeorge · Jackson, US
• Philipp Kreutziger · Landau, DE
• Manuel Kluck · Neustadt, DE
• Michael Flockert · Haßloch, DE
• Mathias Hund · Haßloch, DE
• Eric A. Hein · Neustadt an der Weinstraße, DE

Key dates

• Filing date: Aug 19, 2016
• Grant date: Oct 29, 2019
• Expiry date: Aug 19, 2036

Classification

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

Abstract

An exhaust aftertreatment system may include a reductant tank, a gaseous ammonia source, an injector, first conduit and a second conduit. The injector may receive the liquid reductant from the reductant tank and the gaseous ammonia from the gaseous ammonia source and inject the liquid reductant into a stream of exhaust gas in a first mode, inject the gaseous ammonia into the stream of exhaust gas in a second mode, and both the liquid reductant and the gaseous ammonia into the stream of exhaust gas in a third mode. The first conduit may communicate liquid reductant from the reductant tank to the injector. The second conduit may communicate gaseous ammonia from the gaseous ammonia source to the injector.