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    • 8. 发明授权
    • Engine exhaust treatment device
    • 发动机废气处理装置
    • US09393524B2
    • 2016-07-19
    • US14002597
    • 2012-01-26
    • Keita NaitoToshio NakahiraYoshikazu TakemotoTakashi Onishi
    • Keita NaitoToshio NakahiraYoshikazu TakemotoTakashi Onishi
    • F01N3/00B01D53/94F01N3/025F01N3/32F01N3/36
    • B01D53/9495F01N3/025F01N3/0256F01N3/323F01N3/36F01N2240/14
    • An engine exhaust treatment device is capable of combusting PM accumulated in a DPF or activating an exhaust purification catalyst even immediately after engine startup or at the time of light load operation. A combustible gas supply passage (8) communicates with an exhaust passage (4) on an upstream of a combustion catalyst (5). An air supply unit (9) and an ignition unit (10) are provided in this supply passage and interlocked with a control unit (11). Where a temperature of the exhaust is lower than a predetermined temperature, the control unit supplies air (12) to a combustible gas by the air supply unit (9) and causes ignition of the combustible gas by the ignition unit (10), so as to cause flame combustion of the combustible gas. The temperature of the exhaust (6) in the exhaust passage (4) is increased by heat of this flame combustion.
    • 发动机排气处理装置能够即使在发动机启动后或轻负载运转时,也可以燃烧积聚在DPF中的PM或者使排气净化催化剂活化。 可燃气体供给通路(8)与燃烧催化剂(5)的上游侧的排气通路(4)连通。 供气单元(9)和点火单元(10)设置在该供应通道中并与控制单元(11)互锁。 在排气温度低于预定温度的情况下,控制单元通过空气供应单元(9)将空气(12)供应到可燃气体,并使点燃单元(10)点燃可燃气体,以便 引起可燃气体的火焰燃烧。 排气通道(4)中的排气(6)的温度由于该火焰燃烧的热量而增加。