| 摘要 |
Apparatus for reducing, by catalytic conversion, the concentration of noxious components in the exhaust gases of an internal combustion engine. The apparatus includes a means for removing a portion of the exhaust gases upstream of the catalytic converter for recycling to the combustion chamber of the internal combustion engine. This removal of a portion of the exhaust gases changes the internal air stream characteristics of the catalytic converter, resulting in more efficient operation. Also, recycling of a portion of the exhaust gases serves to lower the combustion chamber temperature of the internal combustion engine, thus reducing the emission of nitrous oxides.
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