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公开(公告)号：US07448253B2
公开(公告)日：2008-11-11
申请号：US11659663
申请日：2005-08-03
申请人： Morita Asano , Mitsuhiro Izumi , Tsutomu Kusuhara
发明人： Morita Asano , Mitsuhiro Izumi , Tsutomu Kusuhara
IPC分类号： G01M15/00
CPC分类号： F02D35/021 , F02D41/402 , Y02T10/44
摘要： The present invention is a combustion state determination method of an internal combustion engine for detecting an ion current which is generated in a combustion chamber at combustion of the internal combustion engine in a detection period to determine a combustion state, comprising steps of detecting a primary combustion period on the basis of a first ion current which forms the detected ion current and occurs immediately after ignition, detecting a secondary combustion period on the basis of the ion current which occurs after disappearance of the first ion current when at least the detected primary combustion period is normal, determining the combustion state on the basis of the detected primary combustion period when the secondary combustion period is smaller than a predetermined value, and determining the combustion state on the basis of a whole combustion period from start of the detection period of the ion current to end of the last secondary combustion period in the detection period when the secondary combustion period is larger than the predetermined value.
摘要翻译： 本发明是一种内燃机的燃烧状态判定方法，该内燃机用于检测在检测期间内燃机的燃烧时在燃烧室中产生的离子电流，以确定燃烧状态，包括以下步骤：检测一次燃烧 基于形成检测到的离子电流并在点火之后立即发生的第一离子电流的时间段，基于在至少检测到的一次燃烧期间基于第一离子电流消失之后发生的离子电流检测二次燃烧时间 是正常的，当二次燃烧时间小于预定值时，基于检测到的一次燃烧时间确定燃烧状态，并且基于从离子的检测周期开始的整个燃烧周期来确定燃烧状态 在检测pe中的最后二次燃烧时段的当前结束 当二次燃烧期间大于预定值时。
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公开(公告)号：US20080028842A1
公开(公告)日：2008-02-07
申请号：US11659663
申请日：2005-08-03
申请人： Morito Asano , Mitsuhiro Izumi , Tsutomu Kusuhara
发明人： Morito Asano , Mitsuhiro Izumi , Tsutomu Kusuhara
IPC分类号： G01R19/15
CPC分类号： F02D35/021 , F02D41/402 , Y02T10/44
摘要： The present invention is a combustion state determination method of an internal combustion engine for detecting an ion current which is generated in a combustion chamber at combustion of the internal combustion engine in a detection period to determine a combustion state, comprising steps of detecting a primary combustion period on the basis of a first ion current which forms the detected ion current and occurs immediately after ignition, detecting a secondary combustion period on the basis of the ion current which occurs after disappearance of the first ion current when at least the detected primary combustion period is normal, determining the combustion state on the basis of the detected primary combustion period when the secondary combustion period is smaller than a predetermined value, and determining the combustion state on the basis of a whole combustion period from start of the detection period of the ion current to end of the last secondary combustion period in the detection period when the secondary combustion period is larger than the predetermined value.
摘要翻译： 本发明是一种内燃机的燃烧状态判定方法，该内燃机用于检测在检测期间内燃机的燃烧时在燃烧室中产生的离子电流，以确定燃烧状态，包括以下步骤：检测一次燃烧 基于形成检测到的离子电流并且在点火之后立即发生的第一离子电流的时间段，基于在至少检测到的一次燃烧时间时基于第一离子电流消失之后发生的离子电流检测二次燃烧时间 是正常的，当二次燃烧时间小于预定值时，基于检测到的一次燃烧时间确定燃烧状态，并且基于从离子的检测周期开始的整个燃烧周期来确定燃烧状态 在检测pe中的最后二次燃烧时段的当前结束 当二次燃烧期间大于预定值时。
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公开(公告)号：US07746079B2
公开(公告)日：2010-06-29
申请号：US11632928
申请日：2005-08-09
IPC分类号： F02P17/00
CPC分类号： F02D35/021 , F02P17/12 , G01L23/221
摘要： An ion current detecting apparatus includes a capacitor C that is charged as a spark plug 3 discharges, a Zener diode ZD that limits a maximum voltage of the capacitor C while charging, a detection resistor R2 through which a discharge current of the capacitor C flows, and a comparator circuit 5 that compares a current value of the detection resistor R2 with a predetermined value. A charge quantity Q of the capacitor C at discharge start is set so that, as a consequence of a discharging operation of the capacitor C, discharge duration required until the current value of the detection resistor R2 falls below the predetermined value becomes longer than time duration in which the ion current generated by fuel combustion in the engine combustion chamber lasts. The ion current detecting apparatus automatically detects degradation in an insulation resistance in the spark plug, ensuring normal operation in engine control.
摘要翻译： 离子电流检测装置包括：随着火花塞3放电而充电的电容器C，在充电时限制电容器C的最大电压的齐纳二极管ZD，电容器C的放电电流流过的检测电阻R2， 以及将检测电阻器R2的电流值与规定值进行比较的比较电路5。 设定放电开始时的电容器C的充电量Q，使得作为电容器C的放电动作的结果，直到检测电阻器R2的电流值下降到预定值以下所需的放电持续时间长于持续时间 其中由发动机燃烧室中的燃料燃烧产生的离子电流持续。 离子电流检测装置自动检测火花塞的绝缘电阻的劣化，确保发动机控制中的正常工作。
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公开(公告)号：US20080030197A1
公开(公告)日：2008-02-07
申请号：US11632928
申请日：2005-08-09
IPC分类号： F02P17/12
CPC分类号： F02D35/021 , F02P17/12 , G01L23/221
摘要： An ion current detecting apparatus includes a capacitor C that is charged as a spark plug 3 discharges, a Zener diode ZD that limits a maximum voltage of the capacitor C while charging, a detection resistor R2 through which a discharge current of the capacitor C flows, and a comparator circuit 5 that compares a current value of the detection resistor R2 with a predetermined value. A charge quantity Q of the capacitor C at discharge start is set so that, as a consequence of a discharging operation of the capacitor C, discharge duration required until the current value of the detection resistor R2 falls below the predetermined value becomes longer than time duration in which the ion current generated by fuel combustion in the engine combustion chamber lasts. The ion current detecting apparatus according to the present invention quickly and automatically detects degradation in an insulation resistor in the spark plug to ensure a normal operation in engine control.
摘要翻译： 离子电流检测装置包括：随着火花塞3放电而充电的电容器C，在充电时限制电容器C的最大电压的齐纳二极管ZD，电容器C的放电电流流过的检测电阻器R 2 以及将检测电阻器R 2的电流值与规定值进行比较的比较电路5。 设定放电开始时的电容器C的电荷量Q，使得作为电容器C的放电动作的结果，直到检测电阻器R 2的电流值下降到预定值以下所需的放电持续时间变得比时间长 在发动机燃烧室内由燃料燃烧产生的离子电流持续的持续时间。 根据本发明的离子电流检测装置快速且自动地检测火花塞中的绝缘电阻器的劣化，以确保发动机控制中的正常操作。
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