基本信息:
- 专利标题： METHOD AND APPARATUS FOR FILTERING ENGINE EXHAUST
- 专利标题（中）：用于过滤发动机排气的方法和装置
- 申请号：PCT/US1993007174 申请日：1993-07-30
- 公开(公告)号：WO1994003712A2 公开(公告)日：1994-02-17
- 发明人： DONALDSON COMPANY, INC. , TUMA, Daniel, L. , VAN PETEGHEM, Jacques, V. , RONNEAU, Olivier, H.
- 申请人： DONALDSON COMPANY, INC.
- 专利权人： DONALDSON COMPANY, INC.
- 当前专利权人： DONALDSON COMPANY, INC.
- 优先权： US7/923,232 19920731
- 主分类号： F01N03/02
- IPC分类号： F01N03/02
摘要：
A filtering apparatus (12) includes a filter cartridge (28) which may be replaced or cleaned and reused. 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（中）：
过滤装置（12）包括可以被更换或清洁并重复使用的过滤器滤芯（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。