Diagnostic method for an internal combustion engine exhaust gas system that includes a particle filter
    4.
    发明授权
    Diagnostic method for an internal combustion engine exhaust gas system that includes a particle filter 有权
    包括颗粒过滤器的内燃机废气系统的诊断方法

    公开(公告)号:US08096171B2

    公开(公告)日:2012-01-17

    申请号:US12613302

    申请日:2009-11-05

    IPC分类号: G01M15/10

    摘要: In a method for the diagnostics of an internal combustion engine exhaust gas system that includes a particle filter, first and second sets of value vectors are determined, each including associated values for absolute pressure upstream and downstream of the particle filter, a differential pressure determined from the values of the absolute pressure, an exhaust gas volume flow through the particle filter, and a temperature of the exhaust gas volume flow. After a temperature-standardization of the pressure values, characteristics for dependence of the pressure values are generated from temperature-standardized values of the first set of value vectors and possibly stored as reference characteristics. By comparing temperature-standardized values for the absolute pressure on the inlet and outlet sides of the particle filter and the differential pressure of the second set of value vectors with reference characteristics, flow anomalies can be determined in the exhaust gas system.

    摘要翻译: 在包括颗粒过滤器的内燃机废气系统的诊断方法中,确定第一和第二组值向量,每一个包括颗粒过滤器上游和下游的绝对压力的相关值,由 绝对压力的值,通过颗粒过滤器的排气体积流量和废气体积流量的温度。 在压力值的温度标准化之后,由第一组值向量的温度标准化值产生压力值依赖性的特性,并可能存储为参考特性。 通过比较颗粒过滤器入口侧和出口侧的绝对压力的温度标准值和具有参考特性的第二组值向量的压差,可以在废气系统中确定流量异常。

    Diesel particulate filter soot permeability virtual sensors
    5.
    发明申请
    Diesel particulate filter soot permeability virtual sensors 失效
    柴油颗粒过滤器烟灰渗透性虚拟传感器

    公开(公告)号:US20070068147A1

    公开(公告)日:2007-03-29

    申请号:US11237464

    申请日:2005-09-28

    IPC分类号: F01N3/00

    摘要: A system and method for controlling an internal combustion engine senses differential pressure across the diesel particulate filter to monitor at least one of soot cake permeability and filter wall permeability as a function of exhaust temperature and mass flow velocity. The system and method preferably respond to both porous wall and soot cake permeabilities to determine when the soot level matches a threshold at which an operator may be warned, or at which a remedial operation may be triggered, or at which a more protective action taken by the engine control module.

    摘要翻译: 用于控制内燃机的系统和方法感测柴油机微粒过滤器上的差压,以便根据排气温度和质量流速来监测烟灰饼渗透性和过滤壁渗透性中的至少一种。 系统和方法优选地响应多孔壁和烟灰饼渗透性,以确定烟灰水平何时与操作者可能被警告的阈值相匹配,或者可以触发补救操作的阈值,或者通过 发动机控制模块。

    Method for operating a motor vehicle internal combustion engine with an exhaust particle filter
    9.
    发明授权
    Method for operating a motor vehicle internal combustion engine with an exhaust particle filter 有权
    用排气微粒过滤器操作机动车内燃机的方法

    公开(公告)号:US08919106B2

    公开(公告)日:2014-12-30

    申请号:US13605252

    申请日:2012-09-06

    IPC分类号: F01N3/00

    摘要: A method for operating a motor vehicle internal combustion engine with an exhaust system branch in which a wall-flow exhaust particle filter is arranged. An amount of ash and an amount of soot accumulated in the exhaust particle filter are continuously determined. An ash increase value characterizing an increase in the amount of ash is determined and if pre-set conditions are present, the operation of the internal combustion engine is changed over to a special operating mode for performing an ash detachment and transportation operation, in which operating variables of the internal combustion engine are set such that, on the exhaust entry side in the exhaust particle filter, a pre-settable minimum exhaust flow speed results at which detachment of ash attached to the channel walls of the exhaust particle filter and transportation of detached ash in the direction of the respective inlet channel end is made possible.

    摘要翻译: 一种具有排气系统分支的机动车内燃机的方法,其中布置有壁流式排气颗粒过滤器。 连续地确定积存在排气颗粒过滤器中的灰分量和烟尘量。 确定表征灰量增加的灰增值,如果存在预先设定的条件,则将内燃机的运转切换为用于执行灰分分离和运输操作的特殊操作模式,其中操作 内燃机的变量被设定为使得在排气颗粒过滤器的排气入口侧具有可预先设定的最小排气流速,从而导致附着在排气颗粒过滤器的通道壁上的灰分脱落和分离的运输 在相应入口通道端的方向上的灰分成为可能。

    Method for Operating a Motor Vehicle Internal Combustion Engine with an Exhaust Particle Filter
    10.
    发明申请
    Method for Operating a Motor Vehicle Internal Combustion Engine with an Exhaust Particle Filter 有权
    使用排气颗粒过滤器操作机动车内燃机的方法

    公开(公告)号:US20140060008A1

    公开(公告)日:2014-03-06

    申请号:US13605252

    申请日:2012-09-06

    IPC分类号: F01N3/021

    摘要: A method for operating a motor vehicle internal combustion engine with an exhaust system branch in which a wall-flow exhaust particle filter is arranged. An amount of ash and an amount of soot accumulated in the exhaust particle filter are continuously determined. An ash increase value characterizing an increase in the amount of ash is determined and if pre-set conditions are present, the operation of the internal combustion engine is changed over to a special operating mode for performing an ash detachment and transportation operation, in which operating variables of the internal combustion engine are set such that, on the exhaust entry side in the exhaust particle filter, a pre-settable minimum exhaust flow speed results at which detachment of ash attached to the channel walls of the exhaust particle filter and transportation of detached ash in the direction of the respective inlet channel end is made possible.

    摘要翻译: 一种具有排气系统分支的机动车内燃机的方法,其中布置有壁流式排气颗粒过滤器。 连续地确定积存在排气颗粒过滤器中的灰分量和烟尘量。 确定表征灰量增加的灰增值,如果存在预先设定的条件,则将内燃机的运转切换为用于执行灰分分离和运输操作的特殊操作模式,其中操作 内燃机的变量被设定为使得在排气颗粒过滤器的排气入口侧具有可预先设定的最小排气流速,从而导致附着在排气颗粒过滤器的通道壁上的灰分脱落和分离的运输 在相应入口通道端的方向上的灰分成为可能。