Muffler diffuser

Abstract

An improved muffler diffuser insert adapted to be used with, and mounted within, an exhaust muffler for effectively helping to reduce noise and back pressure attendant to engine operation. The diffuser comprises a cap end for abutting against an exhaust end of the muffler when the muffler diffuser is mounted within the muffler, which has at least one exhaust opening defined therein for cooperation with the exhaust end of the muffler so as to permit an exhaust flow from the exhaust end of the muffler to pass through. A body portion is connected to the cap end, and defines therein an elongated opening for permitting the exhaust flow from the muffler to pass through. A distal end of the body portion comprises an outermost end and two sound deflection portions positioned on either side of the outermost end for use in deflecting sound waves contained in the exhaust flow so as to enhance noise diffusion.

Description

BACKGROUNDRelated Application[0001]This application claims priority to Canadian Patent Application No. 2,545,971, filed on May 9, 2006, the contents of which are incorporated herein by reference in their entirety for all purposes.FIELD OF THE INVENTION[0002]This invention relates to an improved muffler diffuser insert adapted to be used with an exhaust system for effectively helping to reduce noise and back pressure attendant to engine operation, and, more particularly, an improved muffler diffuser insert which is virtually free-flowing, causes little to no back pressure, but which will not restrict an exhaust air flow.DESCRIPTION OF THE PRIOR ART[0003]In 2000, for example, motorcycle manufacturers designed and built a four stroke race motorcycle for off-road use. The reason for them to do this was to counteract the growing concerns that the engines of previous models of 2-stroke bikes were causing harm to our environment. In a 2-stroke motor, it is the mixture of gas and oil that i...

AI Technical Summary

Benefits of technology

"The present invention provides an improved muffler diffuser insert that can be used in various manufacturers' mufflers. The insert allows engine exhaust gases to flow freely and lowers the noise produced below an acceptable level by deflecting sound waves. It does not restrict the outgoing exhaust air flow and fits into mufflers without causing back pressure or overheating. The technical effects of the invention include improved noise reduction, reduced back pressure, and improved exhaust system performance."

Problems solved by technology

In a 2-stroke motor, it is the mixture of gas and oil that is burned in the combustion chamber and then exhausted into our air that creates an environmental issue.

On the platform of this newly designed motor, however, manufacturers needed to increase the engine compression, which also increased the amount of noise that such engines produce.

If the muffler caused additional back pressure it would result in various complications—i.e.

: reduction of horsepower, lack of power, overheating and premature valve failure.

However, some conventional muffler inserts, during use, do not adequately allow for sufficient exhaust flow, thus “plugging up” the muffler and causing back pressure to build, and overheating of the muffler to occur to a certain degree.

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