Patent ID: 7032709
Filing Date: 2006-04-25
Classification: F01N

Abstract:
1. An exhaust-gas muffler for an internal combustion engine including for an internal combustion engine in a portable handheld work apparatus, the exhaust-gas muffler comprising: a muffler housing having an inlet opening and an outlet; said muffler housing including an attenuating space formed therein; a resonance pipe fluidly connected to said inlet opening; said muffler housing including an upper half shell and a lower half shell and said half shells at least partially delimiting said resonance pipe; a partition wall being mounted between said half shells; said partition wall delimiting said resonance pipe; and, a first longitudinal section of said resonance pipe being formed by said lower half shell and said partition wall and a second longitudinal section of said resonance pipe being formed by said upper half shell and said partition wall.