Catalytic converter for the catalytic treatment of exhaust gas

• Main Author: STEENACKERS; PIETER D
• Format: Patent
• Language: English
• Published: 16.01.1996
• Edition: 6
• Subjects: BLASTING; COMBUSTION ENGINES; COMBUSTION ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNALCOMBUSTION ENGINES; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES ORENGINES IN GENERAL; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; INTERNAL-COMBUSTION PISTON ENGINES; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEPARATION; STEAM ENGINES; TRANSPORTING; WEAPONS

The catalytic converter has a casing with an inlet and an outlet and a gas-permeable catalyst element which is arranged in the casing and has an exhaust gas entry surface. A guide surface which faces the orifice of the inlet, is a distance away from its edge and makes an angle of preferably at least 60 DEG and, for example, 90 DEG with the stated axis is present in the casing. The inlet has an inner surface with a cylindrical or slightly conical inner surface section which, in the orifice region of the inlet, is continuously connected to a counter-surface opposite the guide surface by a transition surface section which extends in an arc-like manner towards the inner space of the housing in a section through the axis of the inlet. The exhaust gas flowing through the inlet can be deflected by the guide surface with little pressure loss and can then flow into the element, uniformly distributed over the exhaust gas entry surface of the element.