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A muffler for automobile internal combustion engines consisting briefly of a housing having an inlet end where the exhaust gases are channeled through a tubular member having a helical member so that the gases are forced into a spiral flow pattern. The helical member extends beyond the end of the tu

A muffler for automobile internal combustion engines consisting briefly of a housing having an inlet end where the exhaust gases are channeled through a tubular member having a helical member so that the gases are forced into a spiral flow pattern. The helical member extends beyond the end of the tubular member so that the gases are then permitted to follow a larger spiral pattern where they reflect against the walls of the housing. The housing has an outlet opening which is smaller than the housing diameter which causes compression of the gases and further reflection and interference of the sound waves. The muffler is formed with a counterflow reverberation chamber, a central chamber and a directional-flow reverberation chamber.

대표청구항 ▼

An internal combustion engine muffler comprising: a. an elongated housing having an inlet opening and a rear plate formed with an outlet opening; and including a counter-flow reverberation chamber, a double open ended central chamber extending from said counter-flow chamber to a substantial distance

An internal combustion engine muffler comprising: a. an elongated housing having an inlet opening and a rear plate formed with an outlet opening; and including a counter-flow reverberation chamber, a double open ended central chamber extending from said counter-flow chamber to a substantial distance from said rear plate and communicating with said counter flow reverberation chamber and a directional-flow reverberation chamber formed between said rear plate and said central chamber having a closed end and an open end in communication with said central chamber; b. a first gas flow channeling member including, (1) an elongated unperforated tubular member having a diameter and a length substantially less than the smallest cross sectional dimension and substantially less than the length of said elongated housing and having an inlet end in communication with said inlet opening of said housing, and an outlet end terminating at the downstream end of said counter-flow reverberating chamber and co-extensive with the upstream end of said central chamber and in communication with said central chamber; (2) an elongated rod member having a diameter less than the diameter of said elongated tubular member, (3) a helix member connected to said rod member and having an outer diameter substantially equal to said inside diameter of said elongated tubular member and extending along a substantial portion of said tubular member and extending a substantial distance beyond the downstream end of said tubular member; c. inflow means connecting said gas flow channeling member to said housing causing substantially all of the exhaust gases from said internal combustion engine to flow through said gas flow channeling member, and said inflow means including a wall forming the upstream end of said counter-flow reverberation chamber; and d. an outflow tubular member connected to said housing at said outlet opening and extending through said directional-flow reverberating chamber and communicating with said central chamber, and said upstream end of said out flow tubular member is located at the downstream end of said central chamber and the upstream end of said directional-flow reverberating chamber.