Exhaust flap device for an internal combustion engine
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United States of America Patent
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Oct 11, 2016
Grant Date -
Apr 16, 2015
app pub date -
Mar 15, 2013
filing date -
Apr 18, 2012
priority date (Note) -
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Abstract
An exhaust flap device for an internal combustion engine includes a flap housing and an actuator. The flap housing comprises an exhaust gas duct arranged in the flap housing. The exhaust gas duct is configured to have an exhaust gas flow there-through. An exhaust flap is arranged in the exhaust gas duct and is mounted in the flap housing. The exhaust flap is configured to rotate. A coolant duct is arranged in the flap housing so as to at least partially surround the exhaust flap. The actuator comprises an electric motor and an actuator housing which comprises an actuator coolant duct. The actuator is configured to drive the exhaust flap. The coolant duct arranged in the flap housing is configured to be in a direct fluid communication with the actuator coolant duct.
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