| 摘要 |
In an embodiment of an exhaust gas purification apparatus, when an accumulation amount of particulate matter in a DPF ( 33 ) exceeds a predetermined amount and an exhaust gas temperature of an engine is lower than a restoration operable temperature, an intake air amount reducing operation is executed by an air intake throttling device ( 24 ) provided for an air intake pipe ( 21 ) of the engine, and a heating operation is executed by an electric heater ( 34 ) provided upstream from the DPF ( 33 ), thereby increasing the exhaust gas temperature to the restoration operable temperature to start a restoration operation of the DPF ( 33 ). |
