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    • 2. 发明授权
    • Methods and apparatus for low back pressure muffling of internal combustion engines
    • 内燃机低背压消声的方法和装置
    • US06457552B2
    • 2002-10-01
    • US09778418
    • 2001-02-07
    • Thomas C. MaganasAlan L. Harrington
    • Thomas C. MaganasAlan L. Harrington
    • F01N124
    • F01N3/085F01N1/081F01N3/035F01N3/0842F01N3/0871F01N3/0885F01N13/009F01N2590/08
    • Systems and apparatus for muffling sounds produced by an internal combustion engine, and optionally catalytically degrading pollutants within waste exhaust gases. The systems and apparatus utilize a bed of particles within a muffling chamber. The gases are introduced using a diffusion tube with holes therethrough. The muffling particles preferably include silica or alumina, which can also catalytically degrade pollutants. Typically, the muffling/reaction chamber is maintained at a temperature in a range from about 50° C. to about 500° C., which is much lower than temperatures within conventional muffling systems for diesel engines. The muffling systems operate as substantially lower back pressure compared to conventional muffling systems. The systems and apparatus can be adapted to be used in combination with diesel engines or other internal combustion engines and industrial burners.
    • 用于内燃机产生的消声的系统和设备,以及任选地催化降解废气中的污染物。 系统和设备利用消声室内的颗粒床。 使用具有穿过其中的孔的扩散管引入气体。 消音颗粒优选包括二氧化硅或氧化铝,其还可以催化降解污染物。 通常,消音/反应室保持在约50℃至约500℃的温度范围内,这比用于柴油发动机的常规消声系统中的温度低得多。 与常规消音系统相比,消声系统的背压比基本上低。 该系统和装置可适用于与柴油发动机或其他内燃机和工业燃烧器组合使用。