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    • 2. 发明授权
    • Method and device for diagnosing a crankcase ventilation of an internal combustion engine
    • 用于诊断内燃机曲轴箱通风的方法和装置
    • US07567867B2
    • 2009-07-28
    • US12069611
    • 2008-02-11
    • Klaus HerzIngo Fecht
    • Klaus HerzIngo Fecht
    • F02M25/06F02D45/00G06F19/00
    • F02M25/06F01M11/10F01M13/00Y02T10/121
    • A method and device for diagnosing a crankcase ventilation of an internal combustion engine, which enable a diagnosis of a malfunction of an actuator of the crankcase ventilation. The internal combustion engine has at least two cylinder banks to which the crankcase ventilation is supplied, and an actuator is provided via whose position the distribution of the crankcase ventilation to the at least two cylinder banks is influenced. In a first position of the actuator, a different distribution of the crankcase ventilation to the at least two cylinder banks comes about than in a second position of the actuator that differs therefrom. Given simultaneously activated operation of the at least two cylinder banks, the actuator is switched over at least one between the two different positions. For at least one of the at least two cylinder banks, a characteristic variable of the internal combustion engine influenced by the crankcase ventilation is determined prior to and following the switchover operation. A minimum value for a change in the characteristic variable of at least one of the at least two cylinder banks and/or the ratio of the characteristic variable between the at least two cylinder banks is specified for the switchover-related change in the distribution of the crankcase ventilation to the at least two cylinder banks. A malfunction of the actuator is detected if at least one change derived from the ascertained values for the characteristic variable undershoots its assigned expected minimum value in quantitative terms.
    • 一种用于诊断内燃机的曲轴箱通风的方法和装置,其能够诊断曲轴箱通风的致动器的故障。 内燃机具有至少两个气缸组,曲轴箱通风被供给至少两个气缸组,并且通过其致动器提供曲轴箱通风分配到至少两个气缸组的位置。 在致动器的第一位置中,曲轴箱通风与至少两个气缸组的不同分布比在与其不同的致动器的第二位置处形成。 给予至少两个气缸组的同时激活的操作,致动器在两个不同位置之间切换至少一个。 对于至少两个气缸组中的至少一个,在切换操作之前和之后确定受曲轴箱通风影响的内燃机的特性变量。 对于至少两个气缸组中的至少一个气缸组中的至少一个的特性变量的变化和/或至少两个气缸组之间的特性变量的比率的最小值被指定用于与所述至少两个气缸组的分配相关的切换相关的变化 曲轴箱通风至少两个气缸组。 如果从特征变量的确定值导出的至少一个变化在数量上低于其指定的预期最小值,则检测到致动器的故障。
    • 6. 发明授权
    • Method and device for operating an internal combustion engine having at least one cylinder
    • 用于操作具有至少一个气缸的内燃机的方法和装置
    • US07661298B2
    • 2010-02-16
    • US12074588
    • 2008-03-04
    • Dirk HartmannGeorg MallebreinWerner MezgerAndreas RothHenri BarbierNikolas PoertnerJuergen RappoldIngo Fecht
    • Dirk HartmannGeorg MallebreinWerner MezgerAndreas RothHenri BarbierNikolas PoertnerJuergen RappoldIngo Fecht
    • G01M15/04
    • F02D41/221F02D41/0082F02D41/123Y02T10/40
    • A method and a device for operating an internal combustion engine including at least one cylinder are described, the at least one cylinder including at least one intake valve and at least one exhaust valve and a diagnosis of at least one erroneous intake valve or at least one erroneous exhaust valve is made possible without using a position acknowledgment. A gas exchange of the at least one cylinder is diagnosed thereby. For detection of at least one intake valve or exhaust valve for the existence of an erroneous valve position, at least one intake valve or exhaust valve of the at least one cylinder different from at least one intake valve or exhaust valve to be detected is brought into a predefined position, which is selected in such a way that the gas exchange of the at least one cylinder in the case of an erroneous valve position of the at least one intake valve or exhaust valve to be detected differs significantly from the gas exchange of the at least one cylinder for the case of an error-free valve position of the at least one intake valve or exhaust valve to be detected, a value characteristic for the gas exchange of the at least one cylinder being ascertained, this value being expected at the moment for an error-free state of the set valve positions of the at least one intake valve and the at least one exhaust valve of the at least one cylinder, the actual value characteristic for the gas exchange of the at least one cylinder being ascertained and an error in the position of the at least one intake valve or exhaust valve to be detected is recognized as a function of the deviation in the actual value from the expected value.
    • 描述了一种用于操作包括至少一个气缸的内燃机的方法和装置,所述至少一个气缸包括至少一个进气门和至少一个排气阀以及诊断至少一个错误的进气门或至少一个 在不使用位置确认的情况下使错误排气阀成为可能。 从而诊断出至少一个气缸的气体交换。 为了检测至少一个进气门或排气阀是否存在错误的阀门位置,至少一个气缸的至少一个进气门或排气阀与至少一个待检测的进气门或排气阀不同, 预定位置,其被选择为使得在要检测的至少一个进气门或排气门的错误阀位的情况下至少一个气缸的气体交换与气体交换 至少一个气缸,用于要检测的至少一个进气门或排气门的无差错阀位的情况,确定至少一个气缸的气体交换的特性值,该值预期在 所述至少一个气缸的所述至少一个进气门和所述至少一个排气门的所述设定阀位置的无差错状态的时刻,所述气体排气阀的实际值特性 确定所述至少一个气缸的位置,并且将要检测的所述至少一个进气门或排气门的位置的误差识别为实际值与预期值的偏差的函数。
    • 8. 发明申请
    • Method and device for operating an internal combustion engine
    • 用于操作内燃机的方法和装置
    • US20070089709A1
    • 2007-04-26
    • US11581818
    • 2006-10-16
    • Dirk HartmannWerner MezgerOliver KrannichIngo Fecht
    • Dirk HartmannWerner MezgerOliver KrannichIngo Fecht
    • F02B15/00F01L1/34
    • F02D13/06Y02T10/18
    • A method and a device for operating an internal combustion engine, which make possible a defined and reliable cutting in or cutting off a gas-exchange valve of a cylinder. In at least one operating state, at least one intake valve or exhaust valve of a cylinder is cut off or at least one cut-off intake valve or exhaust valve of the cylinder is cut in again, the at least one intake valve or exhaust valve being opened and/or closed using an operating element; and the operating element being switched off or switched on again using a coupling element. A response delay time is ascertained which is required for the operation of the coupling element for the switching off or switching on again the operating element. Furthermore, a switching time window is ascertained within which the operation of the coupling element is desired. Moreover, it is checked whether the switching time window is greater than the response delay time. In this case, a beginning of the switching procedure for cutting off or cutting in again the at least one intake valve or exhaust valve is established in such a way that the response delay time lies completely within the switching time window.
    • 一种用于操作内燃机的方法和装置,其使得能够定义和可靠地切割或切断气缸的气体交换阀。 在至少一个操作状态下,切断气缸的至少一个进气门或排气阀,或再次切断气缸的至少一个切断进气门或排气阀,至少一个进气门或排气阀 使用操作元件打开和/或关闭; 并且使用耦合元件关闭操作元件或再次接通。 确定响应延迟时间是用于关闭操作的耦合元件的操作所必需的,或再次接通操作元件。 此外,确定了期望耦合元件的操作的切换时间窗口。 此外,检查切换时间窗口是否大于响应延迟时间。 在这种情况下,建立用于切断或切断至少一个进气门或排气门的切换过程的开始,使得响应延迟时间完全在切换时间窗内。