Exhaust gas cooler

US9188037B2 · kind B2 · utility

Assignees

• HX HOLDING GMBH · DE
• Caterpillar Motoren GmbH & Co. KG · DE

Inventors

• Dietmar Krauss · Petersberg, DE
• Jan Dreves · Kiel, DE
• Michael Sturm · Bad Mergentheim, DE
• Carsten Rickert · Kiel, DE
• Udo Schlemmer-Kelling · Molfsee, DE

Key dates

• Filing date: Feb 8, 2013
• Grant date: Nov 17, 2015
• Expiry date: Feb 8, 2033

Classification

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

Abstract

For exhaust gas recirculation in internal combustion engines operating, for example, with low sulphur marine diesel oil, an exhaust gas cooler with a cooling unit may be applied that uses a liquid injection system to maintain clean and/or clean a cooling surface of the cooling unit. The liquid injection system may provide liquid into an exhaust gas passage upstream of and or along a condensation starting region the cooling surface, thereby reducing the formation of films and deposits from particulate matter and condensing liquid of an evaporated liquid within the exhaust gas such as sulphuric acid and/or water, as those deposits could otherwise at least partially block the exhaust gas cooler.