F - Mech Eng,Light,Heat,Weapons – 01 – N
Patent
F - Mech Eng,Light,Heat,Weapons
01
N
F01N 3/24 (2006.01) F01N 3/28 (2006.01) F01N 13/02 (2010.01)
Patent
CA 2503296
In an engine exhaust muffler with an exhaust emission control function, the inside of a box-shaped muffler body is divided into a first exhaust chamber and a second exhaust chamber by a partitioning member which has a third exhaust chamber formed therein. The muffler body is provided with an exhaust inlet for introducing exhaust gas from an engine into the first exhaust chamber. The partitioning member is provided with first communication bores providing communication between the first and second exhaust chambers, and second communication bores providing communication between the second exhaust chamber and the third exhaust chamber. The third exhaust chamber is open to the atmosphere through an exhaust outlet pipe. An exhaust emission control catalyst is carried on an outer surface of the partitioning member facing the first and second exhaust chambers, as well as on an inner surface of the partitioning member facing the third exhaust chamber. An inner surface of the muffler body does not carry the exhaust emission control catalyst. Thus, in this exhaust muffler, thermal damages to the adjacent devices are less, the structure is simple and inexpensive, and a loss in output from the engine is less.
Chiba Shosaku
Ohno Syuji
Honda Motor Co. Ltd.
Smart & Biggar
LandOfFree
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