EXHAUST PURIFIER

摘要

An exhaust purifier comprising a particulate filter (5) disposed in an exhaust pipe in order to capture particulates in an exhaust gas (3), and a selective reduction catalyst (6) disposed on the downstream side of the particulate filter (5) and causing a selective reaction of NOx with ammonia even in the coexistence of oxygen, is further provided with a urea water adding means (12) for adding urea water as a reducing agent between the selective reduction catalyst (6) and the particulate filter (5). At least one bend (13, 14) is formed in the channel for introducing the exhaust gas (3) from the urea water adding means (12) to the selective reduction catalyst (6).