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公开(公告)号：US07729846B2
公开(公告)日：2010-06-01
申请号：US12561883
申请日：2009-09-17
CPC分类号： F02D41/0025 , F02D19/0623 , F02D19/084 , F02D19/088 , F02D41/0032 , F02D41/1488 , F02D41/221 , F02D41/3809 , F02D2200/0612 , Y02T10/36 , Y02T10/40
摘要： A control device for an engine includes an air-fuel ratio detector detecting an air-fuel ratio of an exhaust gas of the engine. A feedback controller performs a feedback control of an amount of a fuel injection of mixed fuel including alcohol so that the air-fuel ratio detected by the air-fuel ratio detector is come close to a target air-fuel ratio, the mixed fuel supplied from a fuel feeder. A concentration estimator estimates a concentration of the alcohol in the mixed fuel based on the air-fuel ratio of the exhaust gas and a correction amount for the amount of the fuel injection controlled by the feedback control. A malfunction determiner determines that the fuel feeder has a malfunction when the correction amount is greater than or equal to a value for a period which is longer than a first period in a second period. The second period is from a first time point when the feedback controller starts to perform the feedback control.
摘要翻译： 发动机的控制装置包括检测发动机的排气的空燃比的空燃比检测器。 反馈控制器对包括醇的混合燃料的燃料喷射量进行反馈控制，使得由空燃比检测器检测的空燃比接近目标空燃比，从 燃料供给器 浓度估计器基于排气的空燃比估计混合燃料中的醇的浓度和通过反馈控制控制的燃料喷射量的校正量。 当校正量大于或等于在第二周期中长于第一周期的时间段的值时，故障确定器确定燃料供给器具有故障。 第二个时间段是反馈控制器开始执行反馈控制的第一时间点。
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公开(公告)号：US07478627B2
公开(公告)日：2009-01-20
申请号：US11389143
申请日：2006-03-27
CPC分类号： F02D41/062 , F02D19/061 , F02D19/0623 , F02D19/0636 , F02D19/0649 , F02D19/0689 , F02D41/0025 , F02D2200/0612 , F02D2200/1015 , Y02T10/36
摘要： When a combustion feedback correction coefficient to which a predetermined value is added in correspondence to half miss firing judgment exceeds a heavy fuel judgment value (K0), heavy fuel judgment is made, and heavy fuel corresponding control for increasing the fuel amount by a combustion feedback correction coefficient (Kfb) and by prolongation of increasing fuel amount (τ) immediately after the startup is performed. When startup is consecutive startup, having a small drop width of a cooling water temperature (TH), from the last engine stop, and the number of times of ignition (Nig) accumulated during the last running is smaller than a warming judgment value (Nig0) at re-startup after running under the heavy fuel corresponding control, miss firing judgment is regarded as being impossible and alternative control for increasing the fuel amount is performed instead of the heavy fuel corresponding control.
摘要翻译： 当与半错误击发判断相对应地添加有预定值的燃烧反馈校正系数超过重燃料判定值（K0）时，进行重质燃料判断，并且通过燃烧反馈来增加燃料量的重质燃料对应控制 校正系数（Kfb），以及在启动之后立即增加燃料量（τ）的延长。 当起动连续启动时，从最后的发动机停止起，冷却水温度（TH）的小的下降宽度以及在最后一次运行期间累积的点火次数（Nig）小于加热判定值（Nig0 ）在重型燃料对应控制下运行后重新启动，认为是不可能的点火判断，而不是采用重型燃料对应控制的替代控制来增加燃料量。
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公开(公告)号：US20060219222A1
公开(公告)日：2006-10-05
申请号：US11389143
申请日：2006-03-27
IPC分类号： F02D41/06
CPC分类号： F02D41/062 , F02D19/061 , F02D19/0623 , F02D19/0636 , F02D19/0649 , F02D19/0689 , F02D41/0025 , F02D2200/0612 , F02D2200/1015 , Y02T10/36
摘要： When a combustion feedback correction coefficient to which a predetermined value is added in correspondence to half miss firing judgment exceeds a heavy fuel judgment value (K0), heavy fuel judgment is made, and heavy fuel corresponding control for increasing the fuel amount by a combustion feedback correction coefficient (Kfb) and by prolongation of increasing fuel amount (τ) immediately after the startup is performed. When startup is consecutive startup, having a small drop width of a cooling water temperature (TH), from the last engine stop, and the number of times of ignition (Nig) accumulated during the last running is smaller than a warming judgment value (Nig0) at re-startup after running under the heavy fuel corresponding control, miss firing judgment is regarded as being impossible and alternative control for increasing the fuel amount is performed instead of the heavy fuel corresponding control.
摘要翻译： 当对应于半错误击发判断而添加了预定值的燃烧反馈校正系数超过重燃料判断值（K <0> 0）时，进行重质燃料判定， 通过燃料反馈校正系数（Kfb）增加燃料量，并且通过在执行启动之后立即增加燃料量（τ）来增加燃料量。 当启动连续启动时，具有从最后发动机停止的冷却水温度（TH）的小的下降宽度和在最后运行期间累积的点火次数（Nig）小于加热判定值（Nig 0）在重型燃料对应控制下运行后重新启动，认为不合格点火判断是不可能的，并且执行用于增加燃料量的替代控制而不是重型燃料相应的控制。
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公开(公告)号：US20100065031A1
公开(公告)日：2010-03-18
申请号：US12561883
申请日：2009-09-17
IPC分类号： F02D41/00
CPC分类号： F02D41/0025 , F02D19/0623 , F02D19/084 , F02D19/088 , F02D41/0032 , F02D41/1488 , F02D41/221 , F02D41/3809 , F02D2200/0612 , Y02T10/36 , Y02T10/40
摘要： A control device for an engine includes an air-fuel ratio detector detecting an air-fuel ratio of an exhaust gas of the engine. A feedback controller performs a feedback control of an amount of a fuel injection of mixed fuel including alcohol so that the air-fuel ratio detected by the air-fuel ratio detector is come close to a target air-fuel ratio, the mixed fuel supplied from a fuel feeder. A concentration estimator estimates a concentration of the alcohol in the mixed fuel based on the air-fuel ratio of the exhaust gas and a correction amount for the amount of the fuel injection controlled by the feedback control. A malfunction determiner determines that the fuel feeder has a malfunction when the correction amount is greater than or equal to a value for a period which is longer than a first period in a second period. The second period is from a first time point when the feedback controller starts to perform the feedback control.
摘要翻译： 用于发动机的控制装置包括检测发动机的排气的空燃比的空燃比检测器。 反馈控制器对包括醇的混合燃料的燃料喷射量进行反馈控制，使得由空燃比检测器检测的空燃比接近目标空燃比，从 燃料供给器 浓度估计器基于排气的空燃比估计混合燃料中的醇的浓度和通过反馈控制控制的燃料喷射量的校正量。 当校正量大于或等于在第二周期中长于第一周期的时间段的值时，故障确定器确定燃料供给器具有故障。 第二个时间段是反馈控制器开始执行反馈控制的第一时间点。
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