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AssigneeKabushiki Kaisha Toyota Chuo Kenkyusho
InventorsMasayuki Fukui, Koji Yokota, Yutaka Yokoi, Yujiro Oshima
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An apparatus for efficiently purifying NOx in the exhaust gas or soluble organic substance in the exhaust gas from a diesel engine. A plurality of purification units are arranged in a housing, each of which is composed of a catalytic layer for reducing NOx and a cooling core for cooling the exhaust gas admitted through the catalytic layer. The multi-staged purification units are so constructed to admit the exhaust gas to flow therethrough. The catalytic layer in the form of a porous carrier such as a honeycomb structure carries catalytic components. Upon purifying soluble organic substance in the exhaust gas from a diesel engine, the catalytic components carried on the catalytic layer serve to efficiently purify such substance, as well as inhibiting the reaction to form sulfate.
A catalytic converter for exhaust gas NOx purification comprising a plurality of purification units serially arranged in a housing, each of which comprises a catalytic layer for reducing NOx and a separate cooling core without catalyst for cooling exhaust gas admitted through said catalytic layer, through which said exhaust gas flows sequentially, wherein said cooling core transfers heat from said exhaust gas to outside said converter.
A catalytic converter for purifying exhaust gas, comprising a plurality of purification units serially arranged in a housing, each of which comprises an exhaust oxidation catalytic layer for oxidizing a soluble organic substance in exhaust gas from a diesel engine, and a separate cooling core without catalyst for cooling said exhaust gas admitted through said exhaust oxidation catalytic layer, through which said exhaust gas flows sequentially, wherein said cooling core transfers heat from said exhaust gas to outside said converter.
Dependencies are inferred from the claim text.