초록 ▼

A muffler for muffling engine operating sounds and including a cylindrical shell closed at opposite ends by double-walled closure caps. The space within the shell is partitioned into three axially contiguous chambers. A gas charging pipe projects through one end of the shell and axially within the s

A muffler for muffling engine operating sounds and including a cylindrical shell closed at opposite ends by double-walled closure caps. The space within the shell is partitioned into three axially contiguous chambers. A gas charging pipe projects through one end of the shell and axially within the shell, and has two pairs of facing discharge elbows for discharging gas from the charging pipe at locations in the first of the chambers. A first pair of gas transfer pipes extends from the first chamber into the central chamber to points of opposed gas discharge. A second pair of gas transfer pipes extends from the central chamber into the third or discharge chamber, and from this location, the gas passes out of the muffler via a discharge pipe.

대표청구항 ▼

A muffler for attenuating the sound developed during, and as a result of, operation of an internal combustion engine, said muffler comprising: a cylindrical shell having two opposed closed ends and defining a first opening through one of said closed ends for receiving an exhaust gas pipe from an eng

A muffler for attenuating the sound developed during, and as a result of, operation of an internal combustion engine, said muffler comprising: a cylindrical shell having two opposed closed ends and defining a first opening through one of said closed ends for receiving an exhaust gas pipe from an engine, and defining a second opening in the second closed end of said shell for extending a discharge pipe therethrough; a plurality of partition plates within said cylindrical shell and partitioning the shell into three axially contiguous compartments; an exhaust gas pipe projecting through said first opening in the first end of said cylindrical shell into a first of said three compartments; two pairs of elbow pipes connected to said exhaust gas pipe, each of said pairs of elbow pipes having opposed, facing gas discharge openings so that the gas streams discharged therefrom are caused to impinge against each other; two gas transfer pipes extending through one of said partition plates, and each of said two gas transfer pipes having an intake opening located in said first compartment, and having a bent over end portion terminating in a discharge opening located in a second of said compartments contiguous to said first compartment, said discharge openings of said two gas transfer pipes facing toward each other in said second compartment so as to direct gas discharged from one of said two gas transfer pipes against gas discharged from the other of said two gas transfer pipes as said discharged gases from the transfer pipes commingle in said second compartment; a pair of T-shaped transfer pipes each comprising: an elongated pick up section in said second compartment and forming the cross bar of the respective T-shaped transfer pipe, said pick up section having a center and a pair of opposite ends and having gas intake openings at each of said opposite ends thereof; and an elongated leg having a pair of opposite ends and having one of said opposite ends joined to the pick up section about the center thereof, and said elongated leg projecting through a second of said partition plates into a third of said compartments, and having the other end of said elongated leg opposite from that which is connected to said pick up section defining a gas discharge opening; and a gas discharge pipe subassembly including a discharge pipe extending through the opening in the closed second end of said shell, and having gas intake means within said third compartment, and having a discharge opening outside of said cylindrical shell.