A muffler with catalytic converter (1) in which at least one catalytic
converter element (2) is located in the muffler so that an essential part
of all exhaust gases (3) from the engine are forced to pass through the
element (2) and be converted there into cleaned exhaust gases (4). The
element is designed as an essentially self-supporting body of catalytic
material, which is hollow or partly concave and has inner and outer
surfaces (6, 7), e.g. the body is shaped as a circular or non-circular
sleeve, or possibly even as a narrowing sleeve (8), a dome-shaped or
angular bowl-shaped body (5), and the element is, either directly or via
intermediary elements, mounted to a dividing part inside the muffler, such
as a partition wall (10), an outlet duct (11) or an inlet duct (12), and
the mounting is so arranged that at least one end surface (13, 14) is kept
fixed at the same time as the element is supported at the outer surface
(7) by at least one part (10, 18, 23, 24), while the inner surface is
essentially free.