Patent ID: 6382347
Filing Date: 2002-05-07
Classification: F01N

Abstract:
An exhaust muffler for an internal combustion engine comprising:a curved inner tube including: a first leg having a first perforate region and a first imperforate region arranged about a circumference of said first leg; a second leg having a second perforate region and a second imperforate region arranged about a circumference of said second leg, said second leg being aligned with said first leg so that said second imperforate region faces said first imperforate region on an inside curve of said curved inner tube; and a curved portion interconnecting said first and second legs; an exhaust inlet in communication with a first end of said first leg and configured to receive exhaust gas from said engine; an exhaust outlet in communication with a second end of said second leg and configured to output said exhaust gas; and a muffler housing enclosing said curved inner tube, said exhaust inlet and said exhaust outlet extending from said muffler housing.