Scambia Industrial Developments Aktiengesellschaft

Adrianus Johannes Hoefnagels

Pieter Delfina Steenackers

Freddy Frans Wollants

For the production of a catalyst body for the catalytic treatment of gas, in particular for the purification of exhaust gas, flat and corrugated sheet metal members having a metallic core and coatings are formed, which coatings comprise a nonmetallic wash coat and at least one catalytically active noble metal. A packet comprising sheet metal members having coatings is then arranged between two walls of a sleeve. Thereafter, each edge of each sheet metal member, which edge faces one of the two walls, is welded to the relevant wall in at least one edge segment. The sheet metal members adjacent to one another then together bound passages for the exhaust gas. This production process makes it possible, even in the case of small cross-sectional dimensions of the passages, to apply uniform coatings to the entire surfaces of the sheet metal members, said surfaces bounding the passages.

Process for the production of a catalyst body for the catalytic

The exhaust manifold has a plurality of individual pipes each having an inlet which is detachably connected to an exhaust gas outlet of an internal combustion engine. Each individual pipe has a catalytic converter section which makes an angle with the inlet, defines a catalytic converter axis and contains catalyst means for the catalytic treatment of the exhaust gas. In a cross-section at right angles to the catalytic converter axis, the catalyst means have a cross-sectional area which is greater than the inlet orifice area of the inlet so that the catalyst means cause only a relatively low resistance to flow when exhaust gas is passed through.

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Asten, Netherlands

Adrianus Johannes Hoefnagels