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公开(公告)号：US06418785B1
公开(公告)日：2002-07-16
申请号：US09531326
申请日：2000-03-20
IPC分类号： G01M1500
CPC分类号： F02P17/12 , F02D35/021 , F02D2200/1015 , F02P2017/125 , G01M15/11
摘要： A misfire detecting apparatus for an internal combustion engine detects only an ion current due to combustion of an air/fuel mixture regardless of a leakage current when combustion: takes place normally. The apparatus includes circuitry for detecting an ion current generated within the engine cylinder immediately after combustion, circuitry 21, 24, 26 for detecting a leakage current occurring between electrodes of a spark plug 14, a first waveform shaper 18 for shaping the ion current into a pulse signal indicating a combustion or misfire event by comparing the pulse signal with a first threshold value for deciding the ion current, the first threshold value being set on the basis of a level of the ion current upon rising thereof, the ion current being superposed on the leakage current, a second waveform shaper 20 for shaping the ion current as detected into a pulse signal through comparison with a second fixed threshold value which is fixed at a value smaller than the first threshold value, and a selector 22 for selectively outputting as the combustion pulse signal either a shaped pulse signal outputted from the first waveform shaper 18 upon detection of occurrence of the leakage current or a shaped pulse signal outputted from the second waveform shaper 20 when no leakage current is detected.
摘要翻译： 用于内燃机的失火检测装置仅在燃烧时正常地检测由空气/燃料混合物的燃烧引起的离子电流，而不管泄漏电流如何。 该装置包括用于检测在燃烧之后立即在发动机气缸内产生的离子电流的电路，用于检测在火花塞14的电极之间产生的漏电流的电路21,24,26，用于将离子电流整形成第一波形整形器18 通过将脉冲信号与用于决定离子电流的第一阈值进行比较来指示燃烧或失火事件的脉冲信号，基于上升时离子电流的电平设定第一阈值，离子电流叠加在 泄漏电流，第二波形整形器20，用于通过与固定在小于第一阈值的值的第二固定阈值进行比较，将检测到的离子电流整形为脉冲信号;以及选择器22，用于选择性地输出为 燃烧脉冲信号是在检测出渗漏曲线时从第一波形整形器18输出的成形脉冲信号 nt或从第二波形整形器20输出的成形脉冲信号，当没有检测到泄漏电流时。
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公开(公告)号：US06275041B1
公开(公告)日：2001-08-14
申请号：US09500477
申请日：2000-02-09
申请人： Koichi Okamura , Yasuyoshi Hatazawa , Shu Sasaki , Mitsuru Koiwa , Yutaka Ohashi , Hisanori Nobe
发明人： Koichi Okamura , Yasuyoshi Hatazawa , Shu Sasaki , Mitsuru Koiwa , Yutaka Ohashi , Hisanori Nobe
IPC分类号： F02B1700
CPC分类号： F02P17/12 , F02P2017/125
摘要： A combustion state detecting apparatus for an internal combustion engine is imparted with facility for determining discriminatively the causes for non-occurrence of combustion. The apparatus includes a spark plug (4) for generating a spark discharge upon application of a high voltage generated by an ignition coil (1) in response to an ignition signal (X1) to thereby fire an air-fuel mixture within a cylinder of the internal combustion engine, an ion current detecting means (6A) for detecting as ion current detection signals (X2a; X2) an ion current corresponding to an amount of ions produced within the cylinder immediately after combustion of the air-fuel mixture, a signal detecting means (7A; 7B; 9) for comparing the ion current detection signal (X2a) outputted from the ion current detecting means (6A) with a first reference voltage (Vth1) to thereby output a first decision signal (X3) while comparing the ion current detection signal (X2) with a second reference voltage (Vth2) to thereby output a second decision signal (X4) while invalidating output of the second decision signal (X4) during a predetermine time period from a time point at which the comparison of the ion current detection signal (X2) with the second reference voltage (Vth2) is started, and an estimating logic unit (9, 10; 112) for estimating a cause for nongeneration of a combustion signal on the basis of output statuses of the first decision signal (X3) and the second decision signal (X4).
摘要翻译： 用于内燃机的燃烧状态检测装置被赋予用于确定不发生燃烧的原因的设备。 该装置包括火花塞（4），用于在施加由点火线圈（1）响应于点火信号（X1）产生的高电压时产生火花放电，从而使位于所述火花塞内的气缸内的空气燃料混合物 内燃机，用于检测作为离子电流检测信号（X2a; X2）的离子电流检测装置，其中所述离子电流对应于在所述空气 - 燃料混合物燃烧后立即产生的气缸内产生的离子的量， 用于将从离子电流检测装置（6A）输出的离子电流检测信号（X2a）与第一参考电压（Vth1）进行比较的装置（7A; 7B; 9），从而输出第一判定信号（X3），同时比较离子 具有第二参考电压（Vth2）的电流检测信号（X2），从而在从比较的时间点起的预定时间段期间使第二判定信号（X4）的输出无效的同时输出第二判定信号（X4） 开始具有第二参考电压（Vth2）的离子电流检测信号（X2），估计逻辑单元（9,10; 112），用于基于第一判定信号（X3）和第二判定信号（X4）的输出状态来估计燃烧信号的非燃性原因。
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公开(公告)号：US06334353B1
公开(公告)日：2002-01-01
申请号：US09482514
申请日：2000-01-14
IPC分类号： G01M1500
CPC分类号： G01L23/225
摘要： To obtain a knock detection apparatus for an internal combustion engine which may obtain a good knock pulse S/N even if an ionic current generation amount is changed by the change of a kind of fuel or plugs, a vibratory component superimposed on an ionic current generated by combustion of fuel is extracted and shaped in waveform into a pulse waveform by comparison with a threshold value, the number of the pulses in the pulse waveform is calculated by a calculation unit, and a control of an ignition timing is performed on the basis of an output result of the calculation unit. The knock detection apparatus for an internal combustion engine comprises an integration circuit for integrating (charging) the vibratory component superimposed on the ionic current and a discharge circuit for discharging a predetermined amount of charge from the integrated charge. The threshold value is self-adjusted by a balance of charge/discharge between the integration circuit and the discharge circuit.
摘要翻译： 为了获得即使离子电流产生量通过燃料或塞子的种类的变化而改变也可获得良好的爆震脉冲S / N的内燃机爆震检测装置，产生叠加在离子电流上的振动成分 通过与阈值进行比较，将燃料燃烧提取并形成波形成脉搏波形，通过计算单元计算脉搏波形中的脉冲数，并基于以下方式进行点火正时的控制 计算单元的输出结果。 用于内燃机的爆震检测装置包括用于对叠加在离子电流上的振动分量进行积分（充电）的积分电路和用于从集成电荷中排出预定量的电荷的放电电路。 通过积分电路和放电电路之间的充电/放电的平衡来自动调整阈值。
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4.发明授权公开(公告)号：US06336355B1
公开(公告)日：2002-01-08
申请号：US09496277
申请日：2000-02-01
申请人： Shu Sasaki , Koichi Okamura , Yasuyoshi Hatazawa , Mitsuru Koiwa , Hisanori Nobe
发明人： Shu Sasaki , Koichi Okamura , Yasuyoshi Hatazawa , Mitsuru Koiwa , Hisanori Nobe
IPC分类号： G01M1500
CPC分类号： G01L23/225 , F02B77/08 , F02D35/021 , F02D41/009 , F02P17/12 , F02P2017/128 , G01L23/221
摘要： To provide a combustion condition detecting apparatus for an internal combustion engine, which may well detect the combustion conditions such as discrimination of a combustion cylinder and knock generating condition and may reduce a circuit scale therefor, there are provided an ignition coil 21 provided for each cylinder; an ignition plug 20 for discharging by the application of the ignition high tension voltage to ignite mixture within the cylinder; a bias circuit 1 provided for each cylinder for applying a bias voltage to the ignition plug 20; an ionic current detection circuit 2 provided for each cylinder for detecting as an ionic current detection signal an ionic current 6 generated in the cylinder that is immediately after the combustion of the mixture; a knock signal processing circuit 4 provided one for a combination of a plurality of cylinders that are every two or more cylinders in ignition order on the basis of a sum of the ionic current detection signals; and an ECU 5 for detecting the combustion condition of the ignition plug on the basis of the knock signal.
摘要翻译： 为了提供一种用于内燃机的燃烧条件检测装置，其可以很好地检测诸如识别燃烧气缸和爆震发生状况的燃烧条件，并且可以减小其电路规模，设置有用于每个气缸的点火线圈21 ; 火花塞20，用于通过施加点火高压电压进行放电以点燃气缸内的混合物; 为每个气缸设置的偏置电路1，用于向火花塞20施加偏置电压; 为每个气缸设置的离子电流检测电路2，用于检测作为离子电流检测信号的离子电流6，其在混合物燃烧之后立即在汽缸中产生; 爆震信号处理电路4，其基于离子电流检测信号的总和，以点火顺序设置每个两个或更多个气缸的多个气缸的组合; 以及用于基于爆震信号检测火花塞的燃烧状态的ECU5。
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公开(公告)号：US06378494B1
公开(公告)日：2002-04-30
申请号：US09628421
申请日：2000-07-28
IPC分类号： F02P5152
CPC分类号： F02P5/152 , F02P17/12 , F02P2017/128 , G01L23/221 , G01L23/225 , Y02T10/46
摘要： To obtain a knock detection apparatus which may obtain a good knock pulse S/N even if an ionic current generation amount is changed by the change of a kind of fuel or plugs, a knock detection apparatus for detecting a knock generated, in an internal combustion engine, in which a vibratory component superimposed on an ionic current generated by combustion of fuel is extracted, the component that is equal to or more than a knock detection threshold value is shaped in waveform into a pulse waveform, a knock strength is calculated through counting and calculation process of the number of pulses of the pulse waveform by an engine controlling unit, an ignition timing is controlled on the basis of the knock strength, comprises a knock detection threshold value adjusting unit for changing the knock detection threshold value on the basis of information of an ionic current.
摘要翻译： 为了获得能够通过燃料或塞的种类的变化来改变离子电流产生量而获得良好的爆震脉冲S / N的爆震检测装置，用于检测在内燃中产生的爆震的爆震检测装置 其中提取了叠加在由燃料燃烧产生的离子电流上的振动分量，将等于或大于爆震检测阈值的分量波形整形为脉冲波形，通过计数计算爆震强度 以及由发动机控制单元对脉搏波形的脉冲数的计算处理，基于爆震强度来控制点火正时，包括用于根据爆震检测阈值调整单元改变爆震检测阈值的爆震检测阈值调整单元 离子电流信息。
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公开(公告)号：US06427662B2
公开(公告)日：2002-08-06
申请号：US09726519
申请日：2000-12-01
IPC分类号： F02P5152
CPC分类号： F02P5/1523 , G01L23/221 , G01L23/225 , Y02T10/46
摘要： A knock control apparatus for an internal combustion engine includes a knock detector for extracting a vibration component superposed on an ion current, and waveform shaping it at a predetermined threshold value to generate a train of knock pulses (Kp) of which the number of pulses indicates a knock intensity of a knock generated in the internal combustion engine, and an engine control unit for counting the number of knock pulses (npn) in the knock pulse train (Kp) output from the knock detector. The engine control unit judges, based on the number of knock pulses (npn), whether or not a knock is occurring. The engine control unit performs a peak hold of the number of knock pulses to calculate the knock judgement threshold value (BGL) by multiplying the number of pulses by (&agr;). Thus, precision in knock judgement is improved by performing knock judgement based on a maximum value (MAX) of the number of knock pulses (npn).
摘要翻译： 用于内燃机的爆震控制装置包括用于提取叠加在离子电流上的振动分量的爆震检测器，以及以预定阈值对其进行波形整形以产生脉冲数指示的一系列爆震脉冲（Kp） 在内燃机中产生的撞击的爆震强度，以及用于计算从爆震检测器输出的爆震脉冲串（Kp）中的爆震脉冲数（npn）的发动机控制单元。 发动机控制单元基于爆震脉冲数（npn）判断是否发生爆震。 引擎控制单元通过将脉冲数乘以（α）来执行敲击脉冲数的峰值保持以计算爆震判定阈值（BGL）。 因此，通过基于爆震脉冲数（npn）的最大值（MAX）进行爆震判断来提高爆震判断的精度。
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7.发明授权公开(公告)号：US06865929B2
公开(公告)日：2005-03-15
申请号：US10261502
申请日：2002-10-02
CPC分类号： G01L23/22 , F02P17/12 , F02P2017/125
摘要： Ion current detection signal output section for outputting an ion current detection signal including a failure determination signal of an ignition operation is provided, and a failure determination as well as a combustion state can be performed based on this ion current detection signal.
摘要翻译： 提供了用于输出包括点火操作的故障判定信号的离子电流检测信号的离子电流检测信号输出部，并且可以基于该离子电流检测信号进行故障判定以及燃烧状态。
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公开(公告)号：US06311672B1
公开(公告)日：2001-11-06
申请号：US09496252
申请日：2000-02-01
IPC分类号： F02P1152
CPC分类号： F02D35/027 , F02P5/1525 , F02P17/12 , F02P2017/128 , G01L23/225 , Y02T10/46
摘要： A device for controlling knocking of an internal combustion engine featuring improved reliability by preventing signals of the knocking level from being erroneously detected as those of the noise level. The device detects an ionic current flowing through a spark plug, counts a signal of the knocking level from the ionic current, establishes an average knocking level from the signals of the knocking level and determines a background level from the average knocking level. A comparator judges the knocking state by comparing the signal of the knocking level with the background level. The device calculates the control quantity of the engine based on the operation conditions and the result of judgement of knocking. The device further judges a transient state and decreases the average knocking level depending upon a transience judgment signal in order to maintain a background level in a transient state at an optimum value.
摘要翻译： 一种用于通过防止爆震级别的信号被错误地检测为噪声水平的信号来控制具有改进的可靠性的内燃机的爆震的装置。 该装置检测流过火花塞的离子电流，从离子电流计数敲击电平的信号，从敲击电平的信号建立平均敲击电平，并从平均敲击电平确定背景电平。 比较器通过将敲击级别的信号与背景级别进行比较来判断敲击状态。 该装置根据操作条件和敲击判断结果计算发动机的控制量。 该装置进一步判断瞬态状态，并根据瞬态判断信号降低平均敲击电平，以将瞬态中的背景电平维持在最佳值。
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公开(公告)号：US06328016B1
公开(公告)日：2001-12-11
申请号：US09500478
申请日：2000-02-09
IPC分类号： F02P5152
摘要： A knock suppression control apparatus for an internal combustion engine which can avoid erroneous knock detection and hence the erroneous knock suppression control, to thereby ensure knock suppression control with high reliability. The knock suppression control apparatus includes an ion current detecting means (10) for detecting an ion current (i) flowing by way of a spark plug (8) upon combustion of an air-fuel mixture charged in the cylinder, a filter means (14A) for extracting a knock signal (Kj) from an output signal (Ei) of the ion current detecting means (10), a knock decision means (23) for deciding occurrence of a knock event in the engine on the basis of the knock signal (Kj), a control quantity correcting means (24) for correcting a control quantity for the internal combustion engine so as to suppress the knock event on the basis of result (H) of decision made by the knock decision means (23), an integrating means (16, 16A) for arithmetically determining an integral value (Km; Em) which corresponds to an output level of the ion current (Ei), a comparison level setting means (26, 26A) for setting a predetermined comparison reference level (MR) for the integral value (Km; Em), and a correcting quantity arithmetic means (25, 25A) for outputting a correcting signal (M1; M2) for correcting parameters relevant to the knock decision means (23) or alternatively relevant to the control quantity correcting means (24) on the basis of result of the comparison between the integral value (Km; Em) and the comparison reference level (MR).
摘要翻译： 一种用于内燃机的爆震抑制控制装置，其可以避免错误的爆震检测和因此的错误的爆震抑制控制，从而以高可靠性确保爆震抑制控制。 爆震抑制控制装置包括：离子电流检测装置（10），用于检测在汽缸内装入的空气燃料混合物燃烧时通过火花塞（8）流动的离子流（i）;过滤装置（14A） ），用于从离子电流检测装置（10）的输出信号（Ei）提取爆震信号（Kj）;基于爆震信号判定发动机爆震事件的爆震判定装置（23） （Kj），用于根据由所述爆震判定装置（23）作出的判定结果（H）来校正所述内燃机的控制量以抑制所述爆震事件的控制量校正装置， 用于算术确定对应于离子电流（Ei）的输出电平的积分值（Km; Em）的积分装置（16,16A），用于设定预定比较基准电平的比较电平设定装置（26,26A） MR）和积分值（Km; Em）和校正量ar 算术装置（25,25A），用于输出校正信号（M1; M2），用于根据积分值（Km; Em）和比较参考电平（MR）之间的比较结果校正与爆震判定装置（23）相关的参数，或者与控制量校正装置（24）相关 ）。
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公开(公告)号：US20060027211A1
公开(公告)日：2006-02-09
申请号：US11042076
申请日：2005-01-26
申请人： Yusuke Naruse , Hisanori Nobe , Mitsuru Koiwa
发明人： Yusuke Naruse , Hisanori Nobe , Mitsuru Koiwa
IPC分类号： F02P5/15
CPC分类号： F02P5/1455 , F02P3/05 , F02P5/151 , Y02T10/46
摘要： An ignition apparatus for an internal combustion engine is capable of avoiding mis-ignition even if subject to external disturbances when a fail signal is transmitted through a common signal line on which an ignition signal can also be transmitted. An igniter is connected to receive the ignition signal from an ECU, and includes a waveform shaper connected with the signal line and having an input connected in parallel to an input resistance so as to make a voltage at the input higher than a prescribed voltage when the ignition signal flows into the input resistance, and a pulse output circuit connected to the input and having an output for generating the fail signal into which a secondary coil current is converted. The pulse output circuit adjusts a fail signal current such that the voltage at the input when the fail signal flows into the input resistance becomes less than the prescribed voltage.
摘要翻译： 另外，内燃机的点火装置即使在故障信号通过也能够发送点火信号的公共信号线被发送的情况下也能够防止误动作。 连接点火器以接收来自ECU的点火信号，并且包括与信号线连接的波形整形器，并且具有与输入电阻并联连接的输入端，以便当输入端的电压高于规定电压时 点火信号流入输入电阻，而脉冲输出电路连接到输入端并具有用于产生转换了次级线圈电流的故障信号的输出端。 脉冲输出电路调节故障信号电流，使得当故障信号流入输入电阻时输入端的电压变得小于规定电压。
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