F - Mech Eng,Light,Heat,Weapons – 01 – N
Patent
F - Mech Eng,Light,Heat,Weapons
01
N
172/40
F01N 1/08 (2006.01)
Patent
CA 1245566
COMPACT, SOUND-ATTENUATING MUFFLER FOR HIGH-PERFORMANCE INTERNAL COMBUSTION ENGINE by RAY T. FLUGGER ABSTRACT A compact, sound-attenuating muffler for a high- performance internal combustion engine is disclosed in which the muffler casing (21) has an elongated transverse cross-section with a height dimension of only slightly larger than the height dimension of the inlet exhaust pipe (22) and a width dimension in the range of about 2 to 4 1/2 times the height dimension, The muffler includes a divergently tapering planar first partition (36) which causes gases to be expanded only in a horizontal plane toward the side walls (38,39) of the muffler and further includes a second partition (41) formed to contract or converge the gases in a horizontal plane toward a central opening (42). The first partition (36) has a cup-shaped back surface so that contraction of the gases around the back side of the first partition (36) is highly effective in attenuating sound, and both partitions are sloped in a direction toward the outlet (28) from the muffler so as to minimize the generation of back pressure, which is not substantially greater than the back pressure in a straight pipe.
487580
Flowmaster Inc.
Riches Mckenzie & Herbert Llp
LandOfFree
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