초록 ▼

A compact, sound-attenuating muffler for a high-performance internal combustion engine is disclosed in which the muffler casing has an elongated transverse cross-section with a height dimension of only slightly larger than the height dimension of the inlet exhaust pipe and a width dimension in the r

A compact, sound-attenuating muffler for a high-performance internal combustion engine is disclosed in which the muffler casing has an elongated transverse cross-section with a height dimension of only slightly larger than the height dimension of the inlet exhaust pipe and a width dimension in the range of about 2 to 4½times the height dimension. The muffler includes a divergently tapering planar first partition which causes gases to be expanded only in a horizontal plane toward the side walls of the muffler and further includes a second partition formed to contract or converge the gases in a horizontal plane toward a central opening. The first partition has a cup-shaped back surface so that contraction of the gases around the back side of the first partition is highly effective in attenuating sound, and both partitions are sloped in a direction toward the outlet 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.

대표청구항 ▼

A compact, sound-attenuating muffler for a high-performance, internal combustion engine or the like including a casing having an inlet opening formed for the flow of exhaust gases into said casing and an outlet opening formed for the discharge of gases from said casing, and partition means positione

A compact, sound-attenuating muffler for a high-performance, internal combustion engine or the like including a casing having an inlet opening formed for the flow of exhaust gases into said casing and an outlet opening formed for the discharge of gases from said casing, and partition means positioned in and supported from said casing including a divergently tapered first partition formed to deflect gases toward side walls of said casing, and a convergently tapered second partition positioned in and supported from said casing downstream of said first partition and formed with central opening means therein for convergence of gases from said side walls to said opening, wherein the improvement in said muffler comprises: said casing being formed with a transverse cross-section having a width dimension substantially greater than the height dimension; said first partition being an imperforate member formed to extend over the full height dimension of said casing and being formed to terminate short of the full width dimension of said casing to define a pair of openings proximate opposite side walls of said casing; and said second partition being formed to extend across both the width and height dimensions of said casing and being imperforate intermediate said casing walls except for said central opening means.