Machine Body and Working Machine
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United States of America Patent
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Issued Date -
Jun 9, 2016
app pub date -
Jul 10, 2014
filing date -
Jul 10, 2014
priority date (Note) -
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Abstract
An injector injects urea water as a liquid reducing agent; a NOx sensor detects concentration of nitrogen oxide in exhaust gas; and an air duct including an inlet side opening and outlet side opening cools at least either one of urea water in urea water hose, NOx sensor or injector with cooling air introduced from outside of the machine room. A ventilation opening at the outside of the machine room communicates with the inlet side opening of the air duct using negative pressure formed in a circumference of exhaust gas flow by an ejector arranged in an exhaust pipe passage.
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