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    • 8. 发明申请
    • PURGING DEVICE FOR PIPE WELDING
    • 用于管道焊接的净化装置
    • US20150083785A1
    • 2015-03-26
    • US14381217
    • 2013-01-23
    • Jin Woo Park
    • Jin Woo Park
    • B23K37/00B23K9/16
    • B23K37/00B23K9/16B23K9/326B23K37/0531B23K2101/10
    • Disclosed is a purging device for pipe welding, comprising: a pair of sealing tools that are disposed inside a pipe, expand by supplied air and are in contact with an inner wall of the pipe; and a connection pipe that is disposed between the pair of sealing tools, is a cylindrical body, wherein the sealing tools are respectively fixed to either side end of the connection pipe and the connection pipe is provided with a gas nozzle for discharging inert gas supplied from the outside, wherein each of the sealing tools further comprises a blocking layer that is flame retardant and is coupled in such a manner as to surround an outer circumferential surface of each of the sealing tools.
    • 公开了一种管道焊接用清洗装置,其特征在于,包括:一对密封工具,其设置在管内,通过供给的空气膨胀并与所述管的内壁接触; 并且设置在所述一对密封工具之间的连接管是圆筒体,其中所述密封工具分别固定在所述连接管的任一侧端,并且所述连接管设置有用于排出由 外部,其中每个密封工具还包括阻挡层并且以围绕每个密封工具的外周表面的方式联接的阻挡层。
    • 10. 发明授权
    • Exhaust system
    • 排气系统
    • US08555619B2
    • 2013-10-15
    • US12835274
    • 2010-07-13
    • Jin Woo Park
    • Jin Woo Park
    • F01N3/00
    • F01N9/002F01N3/023F01N3/106F01N11/00F01N13/009F01N2550/02F01N2570/14F01N2610/03F02D41/0275F02D41/029F02D41/1441F02D41/1446F02D2041/0265F02D2200/0802Y02A50/2344Y02T10/47
    • An exhaust system, may include a trapping filter, a nitrogen oxide purification catalyst to eliminate nitrogen oxide of the exhaust gas, an injector that selectively injects fuel in the exhaust line, a fuel cracking catalyst that is disposed between the injector and the trapping filter at the exhaust line, transforms the injected fuel to a reducing agent, and a control portion that controls the injector to inject a predetermined amount of the fuel for a predetermined time period so as to raise the temperature of the trapping filter to a predetermined regeneration temperature and eliminate the particulate material trapped in the trapping filter, wherein the control portion detects a degradation rate of the fuel cracking catalyst, and varies the predetermined regeneration temperature of the trapping filter depending on the degradation rate.
    • 排气系统可以包括捕集过滤器,氮氧化物净化催化剂以消除废气的氮氧化物,在排气管线中选择性地喷射燃料的喷射器,设置在喷射器和捕集过滤器之间的燃料裂化催化剂, 排气管线将注入的燃料转化为还原剂,以及控制部,其控制喷射器在预定时间段内喷射预定量的燃料,以将捕集过滤器的温度升高到预定的再生温度;以及 消除捕集在捕集过滤器中的颗粒物质,其中控制部分检测燃料裂解催化剂的降解速率,并根据劣化速率改变捕集过滤器的预定再生温度。