Cataler Corporation

Suguru Matsui

Hiroshi Sekine

Shigeji Matsumoto

Atsushi Nakano

Shigeki Mizuno

Kazuma Nakada

Yuki Kido

Etsuko Ohara

A production method of an exhaust gas purification device includes the steps of supplying a solution containing a catalyst metal from a shower nozzle to an upper part of a honeycomb substrate, coating the honeycomb substrate with the solution, and firing the honeycomb substrate coated with the solution, wherein the shower nozzle has a plurality of discharge openings for discharging the solution and a guard which surrounds the plurality of discharge openings.

Manufacturing method for exhaust gas purification device

An exhaust gas purification device includes: a wall-flow-structured base material having input-side cells, output-side cells, and a porous partition wall; and a catalyst layer formed inside the partition wall contacting the input-side cells or the output-side cells. The catalyst layer is formed in a region extending from the surface of the partition wall and covering at least 90% of the thickness of the partition wall, and is held by the surfaces of the inside pores of the partition wall in the region. Further, the average filling ratios A, B, and C of the catalyst layer held by pores in respective pore size ranges satisfy a specific relationship.

Exhaust gas purification device

A nozzle is configured to discharge a fluid containing a raw material of a catalytic layer to a substrate having first and second end faces and provided with holes each extending from the first end face to the second end face. The nozzle is provided with discharge ports each discharging the fluid toward the first end face of the substrate.

Method and apparatus of manufacturing exhaust gas-purifying catalyst and nozzle used therefor

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Kakegawa, Japan

Suguru Matsui