Catalyst matrix used for purifying IC engine exhaust gases has a longitudinal axis running in the main flow direction of the exhaust gases, a bent inlet surface, and an outlet surface

摘要

Catalyst matrix has a longitudinal axis (15) running in the main flow direction of the exhaust gases; a bent inlet surface (13); and an outlet surface. The inlet and outlet surfaces are connected to each other by a number of channels (11). The inlet surface is partially concave in the plane running through the longitudinal axis. Preferred Features: The deviation of the exhaust gases is constant through the inlet surface in the region of the concave bend. The inlet surface is planar in the region of the longitudinal axis. The matrix is rotationally symmetrical with respect to the longitudinal axis.