Exhaust muffler, two-stroke engine or four-stroke engine having an exhaust muffler, and catalytic converter for an exhaust muffler

An exhaust gas muffler comprising:

• an exhaust gas inlet and an exhaust gas outlet;
• a catalytic converter arranged in flow direction between said exhaust gas inlet and said exhaust gas outlet;
• said catalytic converter including at least one throughflow body defined by at least one wire body;
• said throughflow body having a first end face arranged upstream with respect to said flow direction through said throughflow body and further having a second end face arranged downstream with respect to said flow direction through said throughflow body;
• said throughflow body having at least one first component region coated with a catalytically functioning coating of a first quantity;
• said throughflow body further having a second component region having a catalytically functioning coating of a second quantity smaller than said first quantity with respect to volume;
• and,
• wherein said first component region comprises a plurality of portions configured so as to be mutually separate;
• said second component region extends between said plurality of portions;
• and,
• said first component region includes a plurality of first component regions connected to one another by at least one heat conducting element.

An exhaust gas muffler comprising:

• an exhaust gas inlet and an exhaust gas outlet;
• a catalytic converter arranged in flow direction between said exhaust gas inlet and said exhaust gas outlet;
• said catalytic converter including at least one throughflow body defined by at least one wire body;
• said throughflow body having a first end face arranged upstream with respect to said flow direction through said throughflow body and further having a second end face arranged downstream with respect to said flow direction through said throughflow body;
• said throughflow body having at least one first component region coated with a catalytically functioning coating of a first quantity;
• said throughflow body further having a second component region having a catalytically functioning coating of a second quantity smaller than said first quantity with respect to volume;
• said throughflow body being formed by at least one wound mat;
• and,
• wherein said first component region, in a direction transverse to said flow direction through said throughflow body, is at least partially surrounded by said second component region.

An exhaust gas muffler comprising:

• an exhaust gas inlet and an exhaust gas outlet;
• a catalytic converter arranged in flow direction between said exhaust gas inlet and said exhaust gas outlet;
• said catalytic converter including at least one throughflow body defined by at least one wire body;
• said throughflow body having a first end face arranged upstream with respect to said flow direction through said throughflow body and further having a second end face arranged downstream with respect to said flow direction through said throughflow body;
• said throughflow body having at least one first component region coated with a catalytically functioning coating of a first quantity;
• said throughflow body further having a second component region having a catalytically functioning coating of a second quantity smaller than said first quantity with respect to volume;
• said throughflow body being formed by at least one wound mat;
• said first component region being formed by at least one first mat and said second component region being formed by at least one second mat;
• and,
• wherein said at least one first mat and said at least one second mat have dissimilar thicknesses (d, e).

A two-stroke engine or mixture-lubricated four-stroke engine comprising:

• an exhaust gas muffler;
• said exhaust gas muffler including:
• an exhaust gas inlet and an exhaust gas outlet;
• a catalytic converter arranged in flow direction between said exhaust gas inlet and said exhaust gas outlet;
• said catalytic converter including at least one throughflow body defined by at least one wire body;
• said throughflow body having a first end face arranged upstream with respect to said flow direction through said throughflow body and further having a second end face arranged downstream with respect to said flow direction through said throughflow body;
• said throughflow body having at least one first component region coated with a catalytically functioning coating of a first quantity;
• said throughflow body further having a second component region having a catalytically functioning coating of a second quantity smaller than said first quantity with respect to volume;
• and,
• wherein said second component region completely surrounds said first component region.

A catalytic converter for an exhaust muffler, the catalytic converter comprising:

• at least one throughflow body defined by at least one wire body;
• said throughflow body having a first end face arranged upstream with respect to said flow direction through said throughflow body and further having a second end face arranged downstream with respect to said flow direction through said throughflow body;
• said throughflow body having at least one first component region coated with a catalytically functioning coating of a first quantity;
• and,
• said throughflow body further having a second component region having a catalytically functioning coating of a second quantity smaller than said first quantity with respect to volume;
• and,
• wherein said second component region completely surrounds said first component region.