公开(公告)号：US20170037753A1

公开(公告)日：2017-02-09

申请号：US15304754

申请日：2014-04-16

Applicant: Continental Automotive GmbH

Inventor： Paul Rodatz ,  Michael Nienhoff ,  Tino Arlt ,  Thomas Schön

IPC: F01N3/021 ,  F01N11/00

CPC classification number: F01N3/021 ,  F01N11/00 ,  F01N11/007 ,  F01N2550/04 ,  F01N2560/05 ,  F01N2900/1402 ,  Y02T10/20 ,  Y02T10/47

Abstract: The present disclosure relates to engines for a motor vehicle and some embodiments include a method for operating an exhaust train of a motor vehicle engine including: measuring a particle concentration downstream of a particle filter at a first operating point; determining the filter efficiency at the first operating point; changing operation of the engine to a second operating point to increase the particle emissions; measuring the particle concentration downstream of the filter at the second operating point; determining the filter efficiency at the second operating point; determining a difference between the efficiency levels; detecting an offset error, if the difference exceeds a defined threshold; and identifying a particle sensor as defective if an offset error is detected, rather than identifying the particle filter as defective.

Abstract translation: 本公开涉及用于机动车辆的发动机，并且一些实施例包括用于操作机动车辆发动机的排气系统的方法，包括：在第一操作点处测量颗粒过滤器下游的颗粒浓度; 确定第一工作点处的过滤效率; 将发动机的运转改变到第二个运行点以增加颗粒物排放; 在第二个操作点测量过滤器下游的颗粒浓度; 确定第二工作点处的过滤效率; 确定效率水平之间的差异; 检测偏移误差，如果差值超过限定的阈值; 并且如果检测到偏移误差，则将颗粒传感器识别为有缺陷的，而不是将所述粒子滤波器识别为有缺陷的。

公开(公告)号：US09441567B2

公开(公告)日：2016-09-13

申请号：US14348671

申请日：2012-09-27

Applicant: CONTINENTAL AUTOMOTIVE GMBH

Inventor： Harsha Mahaveera ,  Tino Arlt

IPC: F02D41/14 ,  F02D41/24 ,  F02D41/22

CPC classification number: F02D41/1473 ,  F02D41/1439 ,  F02D41/1441 ,  F02D41/1454 ,  F02D41/1456 ,  F02D41/1495 ,  F02D41/2422 ,  F02D2041/1431 ,  F02D2041/1432 ,  F02D2041/227

Abstract: To operate an internal combustion engine, a specified forced stimulation is applied to an air ratio as the basis for a target value of a lambda controller. In diagnostic operation, a diagnostic function is used to identify a probe error of the exhaust gas probe, and a value of the measurement signal is recorded as a start value in chronological correlation with an edge of the target value curve of the lambda controller and the current value of the measurement signal is recorded as an end value after a specified first time duration. The start and end values are used to determine whether a filter error or a dead time error of the exhaust gas probe exists. The first time duration is specified such that start value/end value difference for a filter error differs start value/end value difference for a dead time error by at least a specified difference value.

Abstract translation: 为了操作内燃机，将指定的强制刺激应用于空气比作为λ控制器的目标值的基础。 在诊断操作中，使用诊断功能来识别排气探头的探测误差，并且测量信号的值被记录为与λ控制器的目标值曲线的边缘按时间顺序相关的起始值，并且 测量信号的当前值在指定的第一时间段之后记录为结束值。 开始和结束值用于确定是否存在废气探头的过滤器误差或死区时间误差。 指定第一持续时间，使得过滤器误差的起始值/结束值差异将死区时间误差的起始值/结束值差异至少不同于指定的差值。

公开(公告)号：US20140325960A1

公开(公告)日：2014-11-06

申请号：US14348671

申请日：2012-09-27

Applicant: CONTINENTAL AUTOMOTIVE GMBH

Inventor： Harsha Mahaveera ,  Tino Arlt

IPC: F02D41/14

CPC classification number: F02D41/1473 ,  F02D41/1439 ,  F02D41/1441 ,  F02D41/1454 ,  F02D41/1456 ,  F02D41/1495 ,  F02D41/2422 ,  F02D2041/1431 ,  F02D2041/1432 ,  F02D2041/227

Abstract: To operate an internal combustion engine, a specified forced stimulation is applied to an air ratio as the basis for a target value of a lambda controller. In diagnostic operation, a diagnostic function is used to identify a probe error of the exhaust gas probe, and a value of the measurement signal is recorded as a start value in chronological correlation with an edge of the target value curve of the lambda controller and the current value of the measurement signal is recorded as an end value after a specified first time duration. The start and end values are used to determine whether a filter error or a dead time error of the exhaust gas probe exists. The first time duration is specified such that start value/end value difference for a filter error differs start value/end value difference for a dead time error by at least a specified difference value.

Abstract translation: 为了操作内燃机，将指定的强制刺激应用于空气比作为λ控制器的目标值的基础。 在诊断操作中，使用诊断功能来识别排气探头的探测误差，并且测量信号的值被记录为与λ控制器的目标值曲线的边缘按时间顺序相关的起始值，并且 测量信号的当前值在指定的第一时间段之后记录为结束值。 开始和结束值用于确定是否存在废气探头的过滤器误差或死区时间误差。 指定第一持续时间，使得过滤器误差的起始值/结束值差异将死区时间误差的起始值/结束值差异至少不同于指定的差值。

公开(公告)号：US10301997B2

公开(公告)日：2019-05-28

申请号：US15104042

申请日：2014-12-17

Applicant: Continental Automotive GmbH

Inventor： Paul Rodatz ,  Michael Nienhoff ,  Ingo Koops ,  Tino Arlt

IPC: F01N3/028 ,  F01N3/20 ,  F01N11/00

Abstract: The present disclosure describes a method for checking the signal of a temperature sensor in an exhaust-gas aftertreatment system for an internal combustion engine. The method may include: in an operating state which does not require heating of the reducing agent, activating the heating device for the purposes of checking the temperature sensor; determining whether the signal of the temperature sensor changes by a predefined expected value (ΔT) within a predefined time period (Δt2); provisionally identifying the temperature sensor as fault-free if it does; deactivating the heating device; determining whether the signal of the temperature sensor reaches the start temperature (T0) again within a time period (Δt3); and confirming the temperature sensor as fault-free if it does.

公开(公告)号：US10132218B2

公开(公告)日：2018-11-20

申请号：US15304754

申请日：2014-04-16

Applicant: Continental Automotive GmbH

Inventor： Paul Rodatz ,  Michael Nienhoff ,  Tino Arlt ,  Thomas Schoen

IPC: F01N3/00 ,  F01N3/021 ,  F01N11/00

Abstract: The present disclosure relates to engines for a motor vehicle and some embodiments include a method for operating an exhaust train of a motor vehicle engine including: measuring a particle concentration downstream of a particle filter at a first operating point; determining the filter efficiency at the first operating point; changing operation of the engine to a second operating point to increase the particle emissions; measuring the particle concentration downstream of the filter at the second operating point; determining the filter efficiency at the second operating point; determining a difference between the efficiency levels; detecting an offset error, if the difference exceeds a defined threshold; and identifying a particle sensor as defective if an offset error is detected, rather than identifying the particle filter as defective.

公开(公告)号：US20160356193A1

公开(公告)日：2016-12-08

申请号：US15104042

申请日：2014-12-17

Applicant: Continental Automotive GmbH

Inventor： Paul Rodatz ,  Michael Nienhoff ,  Ingo Koops ,  Tino Arlt

IPC: F01N3/20 ,  F01N11/00

CPC classification number: F01N3/208 ,  F01N11/002 ,  F01N2240/16 ,  F01N2550/05 ,  F01N2560/06 ,  F01N2610/02 ,  F01N2610/10 ,  F01N2610/1406 ,  F01N2610/144 ,  F01N2610/148 ,  F01N2900/0416 ,  F01N2900/1811 ,  Y02T10/24 ,  Y02T10/47

Abstract: The present disclosure describes a method for checking the signal of a temperature sensor in an exhaust-gas aftertreatment system for an internal combustion engine. The method may include: in an operating state which does not require heating of the reducing agent, activating the heating device for the purposes of checking the temperature sensor; determining whether the signal of the temperature sensor changes by a predefined expected value (ΔT) within a predefined time period (Δt2); provisionally identifying the temperature sensor as fault-free if it does; deactivating the heating device; determining whether the signal of the temperature sensor reaches the start temperature (T0) again within a time period (Δt3); and confirming the temperature sensor as fault-free if it does.

Abstract translation: 本公开描述了一种用于检查用于内燃机的废气后处理系统中的温度传感器的信号的方法。 该方法可以包括：在不需要加热还原剂的操作状态下，激活加热装置以便检查温度传感器; 确定温度传感器的信号是否在预定时间段（Δt2）内改变预定的期望值（ΔT）; 暂时将温度传感器识别为无故障; 停用加热装置; 确定温度传感器的信号是否在时间段（Δt3）内再次达到起始温度（T0）; 并将温度传感器确认为无故障。