Device for exhaust gas heat utilization

US8800263B2 · kind B2 · utility

Assignees

• Faurecia Emissions Control Technologies, Germany GmbH · DE
• Bayerische Motoren Werke Aktiengesellschaft · DE

Inventors

• Andreas Eder · Weißenstein, AT
• Marco Ranalli · Augsburg, DE
• Martin Adldinger · Holzheim, DE

Key dates

• Filing date: Mar 14, 2011
• Grant date: Aug 12, 2014
• Expiry date: Dec 4, 2032

Classification

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

Abstract

A device for exhaust gas heat utilization in internal combustion engines of motor vehicles includes an exhaust gas line which in sections includes a first exhaust gas flow duct and a second exhaust gas flow duct connected in parallel. A valve flap is movable between a closed position and an open position, which can selectively close or at least partly clear a flow cross-section of the first or second exhaust gas flow duct. At least one thermoelectric generator module is thermally coupled with the second exhaust gas flow duct and with a cooling circuit. The device also includes an expansion material actuator for temperature-dependent actuation of the valve flap.