Exhaust gas cleaning metallic substrate
AssigneeUsui Kokusai Sangyo Kabushiki Kaisha
InventorMasayoshi Usui
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Abstract
An exhaust gas cleaning metallic honeycomb body for supporting thereon an exhaust gas cleaning catalyst is described. The body is of a honeycomb structure formed by alternately superposing two types of corrugated bands made of metal sheets one over the other in a contiguous relation and defining a number of network-patterned gas flow passages along a central axis thereof. The two types of corrugated bands comprise: (i) a first corrugated band having a triangular waveform of the structure that substantially-equilateral triangles are continuously connected in a lengthwise direction; and (ii) a second corrugated band having a substantially a sinusoidal waveform.
Claims4
In an exhaust gas cleaning metallic honeycomb body for supporting thereon an exhaust gas cleaning catalyst, said body being of a honeycomb structure formed by alternately superposing two types of corrugated bands made of metal sheets one over the other in a contiguous relation and defining a number of network-patterned gas flow passages along a central axis thereof, the improvement wherein said two types of corrugated bands comprise:
- (i) a first corrugated band having a triangular waveform of the structure that substantially-equilateral triangles are continuously connected in a lengthwise direction;
- and
- (ii) a second corrugated band having a substantially sinusoidal waveform, said second corrugated band being superposed on the first corrugated band and in contiguous relationship therewith.
Dependencies are inferred from the claim text.