Single cavity automobile muffler

Details Single cavity automobile muffler Single cavity automobile muffler

G - Physics

10

K

179/5

G10K 11/16 (2006.01) F01N 1/06 (2006.01) F01N 1/20 (2006.01) F01N 1/22 (2006.01)

Patent

CA 2039745

A noise suppression system for use on internal combustion engines and small enough for use in automotive applications is disclosed. A cancellation noise generator and actuator speakers produce a noise to combine with and cancel the engine noise carried in exhaust gases in a mixing chamber. The resultant noise leaving the mixing chamber is measured by a circulr tubular microphone array to control the noise generator.

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