Engine muffler
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United States of America Patent
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-
Jun 26, 2001
Grant Date -
N/A
app pub date -
Apr 19, 1999
filing date -
Jun 30, 1998
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An engine muffler is provided which comprises a first expansion chamber for exhaust gas which includes an exhaust gas inlet to be connected to an exhaust port of an engine, a second expansion chamber which includes an exhaust gas outlet, a first exhaust gas purifier in which a catalyst for purifying exhaust gas is coated on at least a concave surface of a concave base body which has a plurality of vent holes passing through the concave surface, the first exhaust gas purifier being disposed in the first expansion chamber such that the concave surface faces the exhaust gas inlet, and at least one second exhaust gas purifier in which a catalyst for purifying exhaust gas is coated on a base body including many pores, the second exhaust gas purifier being disposed between the first expansion chamber and the second expansion chamber. The engine muffler is obtained simply by improving a muffler used for a small-sized engine. The engine muffler has an extremely great effect of purifying exhaust gas.
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