| 摘要 |
The purpose of the present invention is to provide an exhaust treatment device for a diesel engine that makes it possible to lower NOx levels in emitted gas. To achieve the foregoing, provided is an exhaust treatment device for a diesel engine, in which an exhaust flow divider (2) is provided to an exhaust channel (1), exhaust (3) is divided by the exhaust flow divider (2) into an EGR gas (4) which has an uneven distribution of PM, and a remainder of emitted gas (5), the EGR gas (4) is refluxed to a combustion chamber (6) and the emitted gas (5) is emitted to the atmosphere, wherein the following are carried out: a first corona discharge passage (7) and second corona discharge passage (8) are provided to the exhaust flow divider (2); electron attachment of PM, water vapor, and oxygen in the exhaust (3) are provoked by corona discharging in the first corona discharge passage (7), and the exhaust (3) is divided by electrostatic force into the EGR gas (4), which has an uneven distribution of the electron-attached PM, water vapor, and oxygen, and the remainder of the emitted gas (5); and the emitted gas (5) is guided to the second corona discharge passage (8), and dissociation of the gas molecules of the emitted gas (5) is provoked by corona discharging in the second corona discharge passage (8) to reduce the NOx in the emitted gas (5) to nitrogen. |
