Methods for NOx reduction using exhaust-gas condensate

US9644575B2 · kind B2 · utility

Assignee

• Ford Global Technologies, LLC · US

Inventors

• Helmut Hans Ruhland · Eschweiler, DE
• Werner Willems · Aachen, DE
• Claudia Katharina Herudek · Aachen, DE
• Claudia Conee · Aachen, DE
• Guohui Chen · Zhuhai, CN

Key dates

• Filing date: Jan 6, 2014
• Grant date: May 9, 2017
• Expiry date: Oct 26, 2034

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/12
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

The system and methods described allow for reduce emissions by using a recirculation device within an engine that connects an air feed line to an exhaust line while cooling the exhaust-gas to form a condensate for further cooling the engine system. In one particular example, a cooling unit is described that cools the exhaust-gas stream flowing there through and collects a condensate out of the exhaust-gas stream for injection back into the air feed line via an injecting device. In this way, an injection of water may be made to reduce NOx emissions during vehicle operations, and the outlay for storage of water on board the vehicle may be eliminated.