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AssigneeMazda Motor Corporation
InventorsAkihide Takami, Hideharu Iwakuni, Makoto Kyogoku, Hiroshi Yamada, Kenji Okamoto, Junichi Taga, Tomomi Watanabe, Hirofumi Nishimura, Tadataka Nakazumi, Youichi Kuji, Masayuki Kuroki
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An exhaust gas purifying system includes an exhaust gas purifying catalyst having a nitrogen oxide absorbing material which is installed in an exhaust line of an engine and performs split fuel injection to inject fuel directly into each combustion chamber partly during a suction stroke and partly during a compression stroke to provide and supply an increased amount of carbon monoxide to the nitrogen oxide absorbing material so as thereby to desorb sulfur oxides from the nitrogen oxide absorbing material.
An exhaust gas purifying system having a nitrogen oxide absorbing material disposed in an exhaust line of an internal combustion engine for absorbing nitrogen oxides in exhaust gases containing other emissions that are sulfuric components poisoning the nitrogen oxide absorbing material when a fuel mixture is leaner than a fuel mixture of an excess air factor of 1 (one) to reduce the nitrogen oxides thereby purifying the exhaust gas said exhaust gas purifying system comprising:
An exhaust gas purifying system having a nitrogen oxide absorbing material comprised of at least one of alkaline earth metals, alkaline metals and rear-earth metals which is disposed in an exhaust line of an internal combustion engine to reduce and purify nitrogen oxides in exhaust gases containing other emissions, said exhaust gas purifying system comprising:
An exhaust gas purifying system having a nitrogen oxide absorbing material operative to absorb carbon oxides, sulfur oxides and nitrogen oxides absorbable in this order to reduce and purify nitrogen oxides in exhaust gases containing other emissions, said exhaust gas purifying system comprising:
An exhaust gas purifying system for purifying exhaust gas containing emissions including nitrogen oxides from an internal combustion engine, which comprises:
Dependencies are inferred from the claim text.