Exhaust gas purification apparatus
AssigneeKabushiki Kaisha Toyota Jidoshokki
InventorYoshifumi Kato
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Abstract
The exhaust gas purification apparatus includes an oxidation catalyst, an ammonia adsorption portion, a selective catalytic reduction catalyst and a urea water supply device. The oxidation catalyst is provided in a passage through which exhaust gas flows. The ammonia adsorption portion is located in the passage downstream of the oxidation catalyst with respect to the flow of the exhaust gas and operable to adsorb ammonia. The selective catalytic reduction catalyst is located in the passage downstream of the ammonia adsorption portion. The urea water supply device is provided for supplying urea water to the passage upstream of the selective catalytic reduction catalyst.
Claims13
An exhaust gas purification apparatus comprising:
- an oxidation catalyst provided in a passage through which exhaust gas flows;
- an ammonia adsorption portion located in the passage downstream of the oxidation catalyst with respect to the flow of the exhaust gas, wherein the ammonia adsorption portion is operable to adsorb ammonia;
- a selective catalytic reduction catalyst located in the passage downstream of the ammonia adsorption portion;
- and
- a urea water supply device for supplying urea water to the passage upstream of the selective catalytic reduction catalyst.
Dependencies are inferred from the claim text.