Engine Powered Machine
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United States of America Patent
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N/A
Issued Date -
Dec 23, 2010
app pub date -
Jul 2, 2008
filing date -
Jul 3, 2007
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
An engine powered machine is provided with an economical exhaust gas purification system capable of avoiding overheating. The engine powered machine is provided with an exhaust gas purification system that injects a reducing agent into an exhaust pipe of an engine by a reducing agent feeder to detoxify nitrogen oxides in exhaust gases. A cooling fan, the driving or stopping of which is controlled by a controller, is arranged as a cooling device for a reducing agent tank in which the reducing agent to be injected by the reducing agent feeder is stored. When a detected temperature signal output from a reducing agent temperature detector has become higher than a cooling initiation temperature stored in a storage unit, the controller drives the cooling fan to initiate cooling of the reducing agent tank.
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