Patent ID: 6695094
Filing Date: 2004-02-24
Classification: B64D,F01N,F02K,F05D

Abstract:
An acoustic muffler comprising:an outer shell of tubular configuration, the shell having a side wall encircling a longitudinal central axis of the shell; a tubular liner disposed within the shell, a generally annular space defined between the liner and the side wall of the shell; and a plurality of dividing walls extending between the liner and the outer shell so as to divide the generally annular space into a plurality of chambers circumferentially spaced about the muffler, wherein at least some of the chambers extend only partially circumferentially about the liner, and wherein at least some of the chambers extend longitudinally between the shell and the liner for the entire length of the shell; wherein a longitudinal central axis of the liner is radially offset from the longitudinal central axis of the shell such that the chambers have different depths in a radial direction of the muffler, the liner having at least one opening into each chamber.