Method For Operating a Motor Vehicle Diesel Engine
    7.
    发明申请
    Method For Operating a Motor Vehicle Diesel Engine 有权
    运行汽车柴油发动机的方法

    公开(公告)号:US20140109554A1

    公开(公告)日:2014-04-24

    申请号:US14115695

    申请日:2011-12-09

    IPC分类号: F01N3/20

    摘要: A method for operating a motor vehicle diesel engine having an exhaust emission control system is provided. The emission control system includes an oxidation catalytic converter, a particle filter, and an SCR catalytic converter, in which the exhaust gas that is discharged from the diesel engine is passed through the oxidation catalytic converter before passing through the particle filter and the SCR catalytic converter. A regeneration of the particle filter with thermal soot burn-off is occasionally carried out, during which the diesel engine is operated at an air-fuel ratio having a lambda value (λ) of at least approximately 1.0, and air is added to the exhaust gas after it exits the oxidation catalytic converter and before it enters the particle filter air, so that soot deposited on the particle filter is burnt-off.

    摘要翻译: 提供一种具有废气排放控制系统的机动车用柴油发动机的运转方法。 排放控制系统包括氧化催化转化器,颗粒过滤器和SCR催化转化器,其中从柴油发动机排出的废气在通过颗粒过滤器和SCR催化转化器之前通​​过氧​​化催化转化器 。 偶尔进行具有热烟灰燃烧的颗粒过滤器的再生,在此期间柴油发动机以λ值(λ)至少约为1.0的空燃比操作,并且将空气添加到排气 气体在其离开氧化催化转化器之后并且在其进入颗粒过滤器空气之前,使得沉积在颗粒过滤器上的烟灰被烧掉。