作者: Hiromasa Nishioka , Kou Sugawara , Yuichi Sobue , Katsuhiko Oshikawa , Yoshihisa Tsukamoto
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摘要: In an exhaust passageway upstream of purification apparatus, there is provided a pre-stage catalyst heat capacity smaller than that the and it intended to, even when reducing agent added from addition valve toward side end face catalyst, inhibit any excess temperature rise catalyst. The disposed at location where in liquid form reaches At performing by so as to feed degree activation higher given level, carried out enhanced focused compared with not level.