Method for cleaning a particulate filter
    1.
    发明申请
    Method for cleaning a particulate filter 审中-公开
    清洁微粒过滤器的方法

    公开(公告)号:US20050252199A1

    公开(公告)日:2005-11-17

    申请号:US10522140

    申请日:2003-07-10

    摘要: The invention relates to a method for regenerating a particulate filter, which is mounted inside the exhaust gas channel of an internal combustion engine, filters particles out of the exhaust gas flowing inside of the exhaust gas channel, and which is intermittently regenerated during operation. According to the method, the actual air mass flow (Lexp) supplied to the internal combustion engine is measured, and the air requirement (Lcalc) of the internal combustion engine is determined. A regeneration of the particulate filter is initiated based on a difference (ΔL) between the air mass flow and the air requirement.

    摘要翻译: 本发明涉及一种安装在内燃机的排气通道内的颗粒过滤器的再生方法,该过滤器将颗粒从排气通道内排出的排气中过滤,并在运行过程中间歇再生。 根据该方法,测量供给到内燃机的实际空气质量流量(Lexp),并确定内燃机的空气需求量(Lcalc)。 基于空气质量流量和空气需求之间的差(DeltaL)启动颗粒过滤器的再生。

    REGENERATION METHOD FOR A STORAGE CATALYTIC CONVERTER
    3.
    发明申请
    REGENERATION METHOD FOR A STORAGE CATALYTIC CONVERTER 有权
    储存催化转化器的再生方法

    公开(公告)号:US20090084089A1

    公开(公告)日:2009-04-02

    申请号:US12237594

    申请日:2008-09-25

    IPC分类号: F01N3/023

    摘要: A regeneration method for a storage catalytic converter in an exhaust-gas purification system of an internal combustion engine, has the following steps: (a) switching of the internal combustion engine from a standard operating mode with a lean exhaust gas to a regeneration mode with a rich exhaust gas, (b) measurement of a nitrogen oxide concentration in the exhaust gas of the internal combustion engine after the switchover to the regeneration mode, (c) determination of a characteristic variable of a desorption peak of the measured nitrogen oxide concentration after the switchover to the regeneration mode, and (d) minimization of the characteristic variable of the desorption peak through controlling of the internal combustion engine as a function of the measured characteristic variable of the desorption peak.

    摘要翻译: 一种用于内燃机的排气净化系统中的储存催化转化器的再生方法,具有以下步骤:(a)将内燃机从标准运行模式与贫排气切换至具有再生模式的再生模式, (b)在切换到再生模式之后,测量内燃机的排气中的氮氧化物浓度,(c)测定后的氮氧化物浓度的解吸峰的特征变量, 切换到再生模式,以及(d)通过控制内燃机作为解吸峰的测定特性变量的函数来最小化解吸峰的特征变量。

    Method and Device for Operating an Internal Combustion Engine
    4.
    发明申请
    Method and Device for Operating an Internal Combustion Engine 有权
    操作内燃机的方法和装置

    公开(公告)号:US20090038595A1

    公开(公告)日:2009-02-12

    申请号:US12280935

    申请日:2007-01-31

    IPC分类号: F02D41/00 G01M15/10

    摘要: An internal combustion engine has at least one cylinder and an exhaust gas tract, in which an exhaust gas sensor, that can be heated in a controlled manner, is arranged. An exhaust gas temperature of an exhaust gas flowing in the exhaust gas tract is determined as a function of the heating power (P_HEAT) supplied to the exhaust gas sensor. An estimated value of the exhaust gas temperature is determined as a function of a physical model of the combustion of the air/fuel mixture and of the exhaust gas tract as a function of at least one operating variable of the internal combustion engine, but independent of the heating power supplied to the exhaust gas sensor. Model parameters of the physical model are adapted as a function of a deviation of the estimated value and of the exhaust gas temperature determined by the supplied heating power.

    摘要翻译: 一种内燃机具有至少一个气缸和排气道,排气传感器可以被控制地加热。 根据供给到废气传感器的加热功率(P_HEAT),确定排气管道中排出的废气的废气温度。 废气温度的估计值根据作为内燃机的至少一个操作变量的函数的空气/燃料混合物和废气道的燃烧的物理模型的函数来确定,但是与 提供给排气传感器的加热功率。 物理模型的模型参数被调整为由所提供的加热功率确定的估计值和排气温度的偏差的函数。

    Method and Device for Diagnosis of an Exhaust Gas Cleaning System
    5.
    发明申请
    Method and Device for Diagnosis of an Exhaust Gas Cleaning System 有权
    排气净化系统诊断方法和装置

    公开(公告)号:US20080105031A1

    公开(公告)日:2008-05-08

    申请号:US11666003

    申请日:2006-07-20

    IPC分类号: G01N7/02

    摘要: The invention is distinguished by a method and a corresponding device for diagnosis of an individual catalytic converter of an exhaust gas purification unit assigned to an internal combustion engine in the Y configuration, despite the lack of exhaust gas probe between the individual catalytic converter and a main catalytic converter. The diagnosis proceeds on the basis of signals from the exhaust gas probes belonging to the exhaust gas purification unit. On the basis of these signals, the oxygen storage capacity of the individual catalytic converter is determined despite the lack of exhaust gas probe between the individual catalytic converter and the main catalytic converter.

    摘要翻译: 本发明的特征在于用于诊断分配给Y型结构的内燃机的排气净化单元的单个催化转化器的方法和相应装置,尽管在单个催化转化器和主催化转化器之间缺乏排气探针 催化转化器。 基于属于排气净化单元的废气探测器的信号进行诊断。 基于这些信号,尽管各个催化转化器和主催化转化器之间缺乏排气探针,但确定了各个催化转化器的储氧能力。

    Method and Device for Operating an Internal Combustion Engine
    6.
    发明申请
    Method and Device for Operating an Internal Combustion Engine 有权
    操作内燃机的方法和装置

    公开(公告)号:US20090077951A1

    公开(公告)日:2009-03-26

    申请号:US12233269

    申请日:2008-09-18

    IPC分类号: F01N9/00

    摘要: An internal combustion engine has a NOX storage catalyst. A storage capacity (NOX_STC) of the NOX storage catalyst is determined for the purpose of operating the internal combustion engine. The temperature (TEMP) of the NOX storage catalyst is increased if the storage capacity (NOX_STC) is less than a predefined threshold value.

    摘要翻译: 内燃机具有NO x储存催化剂。 为了操作内燃机,确定了NO x储存催化剂的储存容量(NOX_STC)。 如果存储容量(NOX_STC)小于预定阈值,则NO x储存催化剂的温度(TEMP)增加。

    Method for adapting the detection of a measuring signal of a waste gas probe
    9.
    发明申请
    Method for adapting the detection of a measuring signal of a waste gas probe 有权
    适应废气探头测量信号检测的方法

    公开(公告)号:US20070119436A1

    公开(公告)日:2007-05-31

    申请号:US10587630

    申请日:2004-11-23

    摘要: The invention relates to a waste gas probe which is disposed in an internal combustion engine, comprising a plurality of cylinders and injection valves associated with the cylinders, in order to measure fuel. The waste gas probe is arranged in a waste gas tract and the measuring signal thereof is characteristic for the air/fuel ratio in the respective cylinder. The measuring signal is detected in relation to a reference position of the piston of the respective cylinder at a predefined crankshaft angle and associated with a respective cylinder. A manipulated variable which is used to influence the air/fuel ration in the respective cylinder according to the measuring signal detected for the respective cylinder is produced by means of a controller. The predefined crankshaft angle is adapted according to an instability criterion of the controller.

    摘要翻译: 本发明涉及一种设置在内燃机中的废气探头,其包括多个气缸和与气缸相连的喷射阀,以便测量燃料。 废气探头设置在废气管道中,其测量信号是相应气缸中的空气/燃料比的特征。 相对于相应气缸的活塞的参考位置以预定的曲轴角度检测测量信号并与相应气缸相关联。 通过控制器产生用于根据针对各个气缸检测的测量信号来影响各气缸中的空气/燃料比的操纵变量。 预定义的曲轴角度根据控制器的不稳定性标准进行调整。

    Method for Regulating the Lambda Value of an Internal Combustion Engine
    10.
    发明申请
    Method for Regulating the Lambda Value of an Internal Combustion Engine 有权
    调节内燃机的λ值的方法

    公开(公告)号:US20090088943A1

    公开(公告)日:2009-04-02

    申请号:US11665517

    申请日:2005-09-16

    IPC分类号: F02D45/00

    摘要: The invention relates to a method for regulating the lambda value of an internal combustion engine with a catalytic converter for subsequently treating the exhaust gases of the internal combustion engine, with a binary lambda probe, which is mounted upstream from the catalytic converter and which senses the composition of the exhaust gases. According to the invention, the lambda set value is superimposed with a lean/rich amplitude. This lean/rich amplitude has an integral component and a discontinuous component leading back to the lambda set value. When a change that differs from the change in the exhaust gas composition caused by the lean/rich amplitude is detected, the coefficient of the integral component is modified and/or a discontinuous component is added to the integral component or subtracted therefrom.

    摘要翻译: 本发明涉及一种用催化转化器调节内燃机的λ值的方法,用于随后用二元λ探针处理内燃机的废气,二元λ探针安装在催化转化器的上游, 废气的组成。 根据本发明,λ设定值以稀薄/丰富的幅度叠加。 这个稀薄/丰富的振幅具有一个整体分量和一个不连续分量,导致λ设定值。 当检测到由稀薄/浓度振幅引起的排气组成变化不同的变化时,整体分量的系数被修正和/或不连续分量加到积分分量中或从其中减去。