Method and apparatus for filtering engine exhaust
    1.
    发明授权
    Method and apparatus for filtering engine exhaust 失效
    过滤发动机排气的方法和装置

    公开(公告)号:US5469702A

    公开(公告)日:1995-11-28

    申请号:US364506

    申请日:1994-12-27

    摘要: A filtering apparatus (12) includes a filter cartridge (28) which may be replaced or cleaned and re-used. The filter apparatus also includes a heat exchanger (62) which receives cooling air to cool the exhaust prior to filtering. The cooled exhaust does not pose combustion problems for soot or the filter material in the cartridge (28). In addition to cooling the exhaust, a temperature-sensitive valve (36) opens and closes to prevent excessively hot exhaust gas from reaching the filter cartridge (28). The valve (36) includes bi-metal discs (52) which bow outward when the temperature increases and flatten when the temperature decreases. The discs engage a cover to an orifice and slide axially to open and close the valve (36). The apparatus also may include a back pressure valve (72) which will open when the exhaust flow is backed up to prevent damage to the engine.

    摘要翻译: 过滤装置(12)包括可更换或清洁并重新使用的过滤器滤芯(28)。 过滤装置还包括在过滤之前接收冷却空气以冷却排气的热交换器(62)。 冷却的排气不会对墨盒(28)中的烟灰或过滤材料造成燃烧问题。 除了冷却排气之外,温度敏感阀36打开和关闭,以防止过热的废气到达过滤器滤芯(28)。 阀(36)包括当温度升高时向外弯曲的双金属盘(52),并且当温度降低时变平。 盘将盖接合到孔口并且轴向滑动以打开和关闭阀(36)。 该装置还可以包括背压阀(72),该背压阀(72)将在排气流被备用时打开以防止损坏发动机。