Diagnostic method for an exhaust gas probe and diagnostic device for an exhaust gas probe
    31.
    发明授权
    Diagnostic method for an exhaust gas probe and diagnostic device for an exhaust gas probe 有权
    废气探头和排气探头诊断装置的诊断方法

    公开(公告)号:US07499792B2

    公开(公告)日:2009-03-03

    申请号:US11731892

    申请日:2007-03-30

    IPC分类号: G06F19/00

    摘要: An exhaust gas probe is disposed downstream of a catalytic converter in an exhaust gas tract of an internal combustion engine. A first quality value which is representative of a signal dynamic of the measured signal of the exhaust gas probe is determined as a function of the measured signal of the exhaust gas probe. If the first quality value represents at least one predefined signal dynamic, the exhaust gas probe is diagnosed as functioning correctly. If the first quality value does not represent at least the predefined signal dynamic, a catalytic converter diagnosis is performed comprising a loading with oxygen and/or an emptying of oxygen with at least two different air/fuel ratios. Dependent on the catalytic converter diagnosis, the exhaust gas probe is diagnosed as functioning either correctly or incorrectly.

    摘要翻译: 排气探针设置在内燃机的废气道中的催化转化器的下游。 作为排气探针的测量信号的函数,确定代表排气探针的测量信号的信号动态的第一质量值。 如果第一质量值表示至少一个预定义的信号动态,则排气探针被诊断为正常工作。 如果第一质量值至少不表示预定义的信号动态,则执行催化转化器诊断,其包括负载氧和/或排空至少两种不同的空气/燃料比的氧气。 依靠催化转化器诊断,排气探头被正确地诊断为正确或不正确。

    Method and device for operating an internal combustion engine

    公开(公告)号:US07469687B2

    公开(公告)日:2008-12-30

    申请号:US11634025

    申请日:2006-12-05

    IPC分类号: F02M33/02 F02M33/04

    CPC分类号: F02D41/0045 F02D2200/0406

    摘要: To operate an internal combustion engine subvolumes of the fluid flowing into an intake duct in each instance during a predetermined time period are determined for each period. Tank purging values of a characteristic quantity are determined for each period. The characteristic quantity is representative of a tank purging fuel mass, which flowed through the tank purging valve in each instance during the predetermined time period. The successive subvolumes are added together, starting from the currently determined subvolume, to give a total subvolume, until the total subvolume is greater than or equal to an effective intake duct volume downstream of the tank purging valve.

    Method and apparatus for operating an internal combustion engine
    33.
    发明授权
    Method and apparatus for operating an internal combustion engine 有权
    用于操作内燃机的方法和装置

    公开(公告)号:US08387592B2

    公开(公告)日:2013-03-05

    申请号:US12936728

    申请日:2009-03-02

    IPC分类号: F02D41/00

    摘要: An internal combustion engine has at least one cylinder, with which an injection valve for metering fuel is associated and an exhaust system with an exhaust gas catalytic converter. A first exhaust gas probe is disposed upstream of or in the exhaust gas catalytic converter, and a second exhaust gas probe is downstream. A lambda controller determines a regulating variable as a function of the first probe and a control variable acting on a fuel mass to be metered using the injection valve. A trim regulator determines a regulating variable thereof as a function of the second probe and the first trim control variable thereof as a function of a P regulator component and the second trim control variable thereof as a function of an I regulator component. A function of a predetermined evaluation of the first trim control variable decides whether the second trim control variable is adapted.

    摘要翻译: 内燃机具有至少一个气缸,用于计量燃料的喷射阀通过该气缸与具有排气催化转化器的排气系统连通。 第一废气探针设置在排气催化转化器的上游或第二排气探针的下游。 λ控制器确定作为第一探针的函数的调节变量和作用在使用注射阀计量的燃料质量的控制变量。 调节调节器根据作为I调节器部件的函数的作为P调节器部件的函数和作为I调节器部件的函数的函数的第二调谐器和第一调节控制变量,将调节变量确定为第二探头和第一调节控制变量的函数。 第一微调控制变量的预定评估的函数决定是否适应第二微调控制变量。

    Diagnostic method and device for operating an internal combustion engine
    34.
    发明授权
    Diagnostic method and device for operating an internal combustion engine 有权
    用于操作内燃机的诊断方法和装置

    公开(公告)号:US08297040B2

    公开(公告)日:2012-10-30

    申请号:US12524750

    申请日:2008-02-04

    申请人: Gerd Rösel

    发明人: Gerd Rösel

    IPC分类号: F01N3/18

    摘要: An internal combustion engine has an exhaust gas catalyst, a first exhaust gas sensor that is arranged in such a manner that it can be used in lambda control, and a second exhaust gas sensor that is arranged in such a manner that it can be used in trim control. A HC quality value (EFF_CAT_HC) which is representative of an oxygen storage capacity of the exhaust gas catalyst is determined depending on a measuring signal (VLS_DOWN) of the second exhaust gas sensor. A NOx correction factor (COR_NOX) is determined depending on the measuring signal (VLS_DOWN) of the second exhaust gas sensor, namely depending on signal portions that are representative of the residual oxygen. A NOx quality value (EFF_CAT_DIAL_NOX) is determined depending on the HC quality value (EFF_CAT_HC) and the NOx correction factor (COR_NOX).

    摘要翻译: 内燃机具有排气催化剂,以能够用于λ控制的方式配置的第一排气传感器,以及第二排气传感器,其以这样的方式配置: 修剪控制。 代表排气催化剂的储氧能力的HC质量值(EFF_CAT_HC)根据第二废气传感器的测量信号(VLS_DOWN)来确定。 根据第二废气传感器的测量信号(VLS_DOWN),即取决于代表残留氧的信号部分,确定NOx校正系数(COR_NOX)。 根据HC质量值(EFF_CAT_HC)和NOx校正因子(COR_NOX)来确定NOx质量值(EFF_CAT_DIAL_NOX)。

    Method and device for operating an internal combustion engine
    35.
    发明授权
    Method and device for operating an internal combustion engine 有权
    用于操作内燃机的方法和装置

    公开(公告)号:US08082731B2

    公开(公告)日:2011-12-27

    申请号:US12233269

    申请日:2008-09-18

    IPC分类号: F01N3/00 F01N3/10

    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 AND DEVICE FOR OPERATING AN INTERNAL COMBUSTION ENGINE
    36.
    发明申请
    METHOD AND DEVICE FOR OPERATING AN INTERNAL COMBUSTION ENGINE 有权
    用于操作内燃机的方法和装置

    公开(公告)号:US20110308499A1

    公开(公告)日:2011-12-22

    申请号:US13148349

    申请日:2010-01-25

    IPC分类号: F02M51/00

    摘要: Each cylinder bank of the internal combustion engine is assigned in each case one injection event memory (EES), an injection determining process (EEP) and an injection execution process (EAP). In the respective injection determining process (EEP), desired injection events (EE) are determined for the associated cylinder bank. These injection events are stored in succession in the respectively associated injection event memory (EES). In the respective injection execution process (EAP), injection events (EE) are retrieved in succession from the associated injection event memory (EES) and executed in a sequence in which they were stored in the associated injection event memory (EES) by the associated injection determining process (EEP) (FIFO: first in first out). The in each case next injection event (EE) is executed only after the end of an execution of the in each case previously executed injection event (EE).

    摘要翻译: 在每种情况下,分配一个喷射事件存储器(EES),喷射确定过程(EEP)和喷射执行过程(EAP))内燃机的每个气缸组。 在相应的喷射确定过程(EEP)中,为相关的气缸组确定期望的喷射事件(EE)。 这些喷射事件被连续存储在分别关联的喷射事件存储器(EES)中。 在相应的注射执行过程(EAP)中,从相关联的注入事件存储器(EES)连续地检索注入事件(EE),并以它们被相关联的注入事件存储器(EES)存储在相关联的注入事件存储器(EES)中的顺序执行) 注入确定过程(EEP)(FIFO:先进先出)。 在每种情况下,仅在每种情况下先前执行的注入事件(EE)的执行结束之后才执行下一个注入事件(EE)。

    Method and apparatus for controlling an internal combustion engine
    37.
    发明授权
    Method and apparatus for controlling an internal combustion engine 有权
    用于控制内燃机的方法和装置

    公开(公告)号:US07891170B2

    公开(公告)日:2011-02-22

    申请号:US10594478

    申请日:2005-02-04

    IPC分类号: F01N3/00

    摘要: In order to control an internal combustion engine, a fuel mass that is to be supplied to the respective cylinder is determined according to a load variable. An additional fuel mass to be measured once is determined, when the measuring signal of an oxygen probe arranged downstream from a three-way catalytic converter is characteristic of at least one pre-determined residual oxygen part, according to the course of the measuring signal. A once reduced fuel mass is determined, when the measuring signal is characteristic of at least one pre-determined residual fuel part, according to the course of the measuring signal. A corrected fuel mass to be measured is determined according to the fuel mass to be supplied and optionally less the once reduced fuel mass or the fuel mass to be measured once. An actuating signal for controlling the injection valve is generated according to the corrected fuel mass to be supplied.

    摘要翻译: 为了控制内燃机,根据负荷变量确定要供给到各气缸的燃料量。 根据测量信号的过程,当从三元催化转化器下游设置的氧探针的测量信号是至少一个预定的残余氧部分的特征时,确定要测量一次的另外的燃料质量。 根据测量信号的过程,当测量信号是至少一个预定的剩余燃料部分的特征时,确定一次减少的燃料质量。 要测量的校正燃料质量根据要供应的燃料质量确定,并且可选地减少一次减少的燃料质量或要测量的燃料质量一次。 根据供给的校正后的燃料量,产生用于控制喷射阀的致动信号。

    METHOD AND DEVICE FOR OPERATING AN INTERNAL COMBUSTION ENGINE
    38.
    发明申请
    METHOD AND DEVICE FOR OPERATING AN INTERNAL COMBUSTION ENGINE 有权
    用于操作内燃机的方法和装置

    公开(公告)号:US20100326053A1

    公开(公告)日:2010-12-30

    申请号:US12864506

    申请日:2008-11-10

    IPC分类号: F01N3/00 F01N9/00

    摘要: An internal combustion engine with multiple cylinders and injection valves that are provided for the cylinders and that meter fuel also comprises an exhaust gas tract in which an exhaust gas catalytic converter is arranged. A characteristic value (OSC) of an oxygen storage capacity of the exhaust gas catalytic converter is determined. In accordance with the characteristic value (OSC), a heating measure (HM) for heating the exhaust gas catalytic converter is carried out.

    摘要翻译: 具有用于气缸和仪表燃料的多个气缸和喷射阀的内燃机还包括其中布置有排气催化转化器的排气管道。 确定废气催化转化器的储氧容量的特征值(OSC)。 根据特征值(OSC),进行用于加热排气催化转化器的加热措施(HM)。