| 摘要 |
An exhaust emission purifier includes a purification unit provided in an exhaust system of an engine for purifying exhaust gases. The exhaust emission purifier also includes an additive feeder unit operatively coupled to the exhaust system at a position between the internal combustion engine and the purification unit for providing an additive to the exhaust gases. Furthermore, the exhaust emission purifier includes a pressurized air introducer unit for receiving air pressurized by an air compressor unit, which is driven by the exhaust gases flowing in the exhaust system and compresses intake air flowing in an intake system of the internal combustion engine. The pressurized air introducer unit is operatively coupled to the additive feeder unit for providing the air pressurized by the air compressor unit to the additive feeder unit.
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