| 摘要 |
A catalytic converter module (16) houses two catalyst units (26,36) which are geometrically arranged in a serial manner. An exhaust gas stream (X) is processed in two parallel sub- streams which follow respective paths: a first path (A) which passes through the first catalyst unit (26) and bypasses the second catalyst unit (36), and a second path (B) which bypasses the first catalyst unit (26) and passes through the second catalyst unit (36). This enables exploitation of a catalyst having an effective area larger than that of the module housing 17 thus allowing the module (16) to be incorporated conveniently into available volumes whilst maintaining a low back pressure.
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