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    • 1. 发明专利
    • Exhaust emission control device of rear engine bus
    • 后发动机总排气排放控制装置
    • JP2006123717A
    • 2006-05-18
    • JP2004314556
    • 2004-10-28
    • Nishi Nippon Shatai Kogyo KkNissan Diesel Motor Co Ltd日産ディーゼル工業株式会社西日本車体工業株式会社
    • KAWAGISHI SATORUIIYAMA SUGURUKAWAGUCHI MASASHIKUROKI YASUHIRO
    • B60K13/04B01D53/94F01N3/08F01N3/24
    • PROBLEM TO BE SOLVED: To restrain freezing of a liquid reducing agent while securing a space of a cargo chamber and a compartment between wheel bases. SOLUTION: This exhaust emission control device of a rear engine bus comprises a NOx reducing catalyst 4 disposed in a position of an exhaust pipe 2 near an engine 1 and reducing and purifying NOx using an urea aqueous solution, a tank 8 storing the urea aqueous solution, and a reducing agent supplying device 7 controlling a flow rate of the urea aqueous solution supplied from the tank 8 to the NOx reducing catalyst. The tank 8 and the reducing agent supplying device 7 are disposed in an engine compartment 12. Thereby, a cargo space between wheel bases can be secured and a floor of the compartment can be lowered. Also, the urea aqueous solution in an induction path 14 inducing the urea aqueous solution from the tank 8 to the reducing agent supplying device 7, and in the tank 8 can be heated by heats of an engine 1. COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:在确保货舱的空间和车轮基座之间的隔间的同时,抑制液体还原剂的冻结。 解决方案:后发动机总线的废气排放控制装置包括设置在发动机1附近的排气管2的位置并使用尿素水溶液还原和净化NOx的NOx还原催化剂4, 尿素水溶液和还原剂供给装置7,其控制从罐8供给到NOx还原催化剂的尿素水溶液的流量。 罐8和还原剂供给装置7设置在发动机室12中。由此,可以确保轮架底座之间的货物空间,并且可以降低隔室的地板。 此外,可以通过发动机1的热量来加热诱导尿素水溶液从罐8到还原剂供给装置7和罐8中的诱导路径14中的尿素水溶液。版权所有:(C )2006年,日本特许厅和NCIPI
    • 2. 发明专利
    • Exhaust emission control device for rear engine bus
    • 用于后发动机总线的排气排放控制装置
    • JP2006125319A
    • 2006-05-18
    • JP2004315588
    • 2004-10-29
    • Nishi Nippon Shatai Kogyo KkNissan Diesel Motor Co Ltd日産ディーゼル工業株式会社西日本車体工業株式会社
    • KAWAGISHI SATORUIIYAMA SUGURUKAWAGUCHI MASASHIKUROKI YASUHIRO
    • F01N3/08B01D53/94
    • Y02C20/10
    • PROBLEM TO BE SOLVED: To suppress rise of temperature of reducing agent in a tank by making it difficult to transmit heat of an engine to the tank and suppress nasty smell generated in the tank. SOLUTION: In this exhaust emission control device for the rear engine bus composed of NOx reduction catalyst 4 arranged in an exhaust pipe 2 of the engine 1 to reduce and purify NOx using urea aqueous solution, the tank 8 for storing the urea aqueous solution, and a reducing agent supply device 7 for controlling flow rate of urea aqueous solution supplied to the NOx reduction catalyst 4 from the tank 8, a tank chamber 14 which is partitioned by a partition plate 13 and in which the tank 8 is arranged is formed at a position apart from the engine 1 in an engine compartment 12. Consequently, since heat of the engine 1 is not easily transmitted to the tank 8, it is possible to suppress generation of ammonia from the urea aqueous solution in the tank 8. COPYRIGHT: (C)2006,JPO&NCIPI
    • 要解决的问题:通过使发动机的热量难以向罐中传递并且抑制罐中产生的讨厌的气味来抑制罐中的还原剂的温度上升。 解决方案:在该发动机1的排气管2中由排气管2构成的后部发动机总线排气排放控制装置中,使用尿素水溶液减少NOx净化,在储存尿素水溶液 溶液和用于控制从罐8供给到NOx还原催化剂4的尿素水溶液的流量的还原剂供给装置7,由隔板13分隔并且其中配置有罐8的罐室14是 形成在发动机室12中与发动机1分离的位置。因此,由于发动机1的热不容易传递到罐8,因此能够抑制罐8内的尿素水溶液产生氨。 版权所有(C)2006,JPO&NCIPI