Exhaust gas purification catalyst

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United States of America Patent

PATENT NO 10076725
APP PUB NO 20180021726A1
SERIAL NO

15550078

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Abstract

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A wall-flow-type exhaust gas purification catalyst with an oxygen storage material that has an increased OSC and exhibits its OSC without a compromise provides an exhaust gas purification catalyst having a wall-flow-type substrate, a first catalytic layer and a second catalytic layer. The first catalytic layer is provided to an internal portion of a partition wall in contact with an entrance cell. The second catalytic layer is provided to an internal portion of a partition wall in contact with an exit cell. Each of the first and second catalytic layers has an oxygen storage material. The ratio (D1/D2) of the coating density D1 of the first catalytic layer to the coating density D2 of the second catalytic layer is 1.1 to 1.8.

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Patent Owner(s)

Patent OwnerAddress
TOYOTA JIDOSHA KABUSHIKI KAISHA1 TOYOTA-CHO TOYOTA-SHI AICHI-KEN 471-8571
CATALER CORPORATION7800 CHIHAMA KAKEGAWA-SHI SHIZUOKA 437-1492

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Kuriyama, Junji Kakegawa, JP 9 100
Miyoshi, Naoto Nagoya, JP 45 740
Morishita, Yuta Kakegawa, JP 11 117
Nomura, Yasutaka Kakegawa, JP 15 135
Ochiai, Daisuke Kakegawa, JP 8 101
Onoe, Ryota Kakegawa, JP 48 354
Sakagami, Shingo Kakegawa, JP 18 229
Sato, Akemi Toyota, JP 35 344
Sekine, Hiroshi Kakegawa, JP 167 2680
Takeuchi, Masahiko Toyota, JP 55 694

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