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1. 发明授权

US06222367B1 Combustion state detecting device for an internal combustion engine 有权
标题翻译：用于内燃机的燃烧状态检测装置
公开(公告)号：US06222367B1
公开(公告)日：2001-04-24
申请号：US09322003
申请日：1999-05-28
申请人： Takeshi Shimizu , Koichi Okamura , Mituru Koiwa , Yutaka Ohashi
发明人： Takeshi Shimizu , Koichi Okamura , Mituru Koiwa , Yutaka Ohashi
IPC分类号： G01M1500
CPC分类号： F02P17/12 , F02P2017/125
摘要： There is provided a combustion state detecting device for an internal combustion engine even in the case where disconnection of a secondary current path or misfire in an ignition plug occurs. A voltage developed at the secondary winding low voltage side is suppressed so that the high voltage can be prevented from being leaked. The combustion state detecting device for an internal combustion engine includes a capacitor 8 for charging a positive bias voltage necessary for detecting ions generated when an ignition plug 4 discharges upon application of the ignition high voltage, a resistor 5 disposed between the low voltage side of the secondary winding and the capacitor for suppressing the drop of the bias voltage, ion current detecting means 30 for detecting a discharge current from the capacitor as an ion current flowing through the ignition plug, an ECU 20 for detecting a combustion state in the ignition plug on the basis of a detection value of the ion current detecting means, and a Zener diode 9 for suppressing a voltage developed when a path in which the ion current flows is disconnected.
摘要翻译：即使在发生火花塞中的二次电流路径断开或失火的情况下，也提供了用于内燃机的燃烧状态检测装置。抑制在次级绕组低压侧产生的电压，从而可以防止高电压泄漏。用于内燃机的燃烧状态检测装置包括电容器8，用于对点火高电压时点火塞4放电时产生的离子进行检测所需的正偏置电压充电;电阻器5，次级绕组和用于抑制偏置电压下降的电容器，用于检测作为流过火花塞的离子电流的来自电容器的放电电流的离子电流检测装置30，用于检测火花塞中的燃烧状态的ECU20 离子电流检测装置的检测值的基础，以及用于抑制当离子电流流动的路径断开时产生的电压的齐纳二极管9。

2. 发明授权

US06216530B1 Combustion state detecting device for an internal combustion engine 失效
标题翻译：用于内燃机的燃烧状态检测装置
公开(公告)号：US06216530B1
公开(公告)日：2001-04-17
申请号：US09317168
申请日：1999-05-24
申请人： Takeshi Shimizu , Koichi Okamura , Mituru Koiwa , Yutaka Ohashi
发明人： Takeshi Shimizu , Koichi Okamura , Mituru Koiwa , Yutaka Ohashi
IPC分类号： G01L326
CPC分类号： F02P17/12 , F02P2017/121 , F02P2017/125
摘要： A combustion state detecting device for an internal combustion engine is obtained which is capable of preventing noises from being superimposed on an ion current, and surely obtaining a desired peak value of the ion current. The combustion state detecting device for the internal combustion engine includes an ignition coil which develops an ignition high voltage, an ignition plug to which the ignition high voltage is applied through a high-voltage path connected to a plurality of output terminals of the ignition coil, bias means for charging a bias voltage necessary for detecting ions which are discharged and generated from the ignition plug, discharge current limiting means for discharging the bias voltage, ion current detecting means for detecting the discharge of the bias voltage as an ion current that flows through the ignition plug, and an ECU for detecting a combustion state in the ignition plug on the basis of a detection value of the ion current, wherein the discharge current limiting means is disposed between an ignition current path formed by discharging the ions from the ignition plug and the bias means.
摘要翻译：得到一种用于内燃机的燃烧状态检测装置，其能够防止噪声叠加在离子电流上，并且可靠地获得期望的离子电流峰值。用于内燃机的燃烧状态检测装置包括产生点火高电压的点火线圈，通过与点火线圈的多个输出端连接的高压路径施加点火高电压的火花塞，用于充电用于检测从火花塞放电和产生的离子所需的偏置电压的偏压装置，用于放电偏压的放电电流限制装置;用于检测偏压的放电的离子电流检测装置，作为流过的离子电流火花塞和用于根据离子电流的检测值检测火花塞中的燃烧状态的ECU，其中放电电流限制装置设置在通过从火花塞排出离子形成的点火电流路径之间和偏倚手段。

3. 发明授权

US06196054B1 Combustion state detecting device for an internal combustion engine 有权
标题翻译：用于内燃机的燃烧状态检测装置
公开(公告)号：US06196054B1
公开(公告)日：2001-03-06
申请号：US09306512
申请日：1999-05-07
申请人： Koichi Okamura , Mituru Koiwa , Yutaka Ohashi
发明人： Koichi Okamura , Mituru Koiwa , Yutaka Ohashi
IPC分类号： G01M1500
CPC分类号： F02P5/152 , F02D35/021 , F02P2017/128 , Y02T10/46
摘要： To obtain a combustion state detecting device in which a detection range is optimized to thereby make it possible to improve the S/N ratio, thereby making it possible to enhance the accuracy in detection of the combustion state of the internal combustion engine, in particular, the accuracy in knock detection. The combustion state detecting device for an internal combustion engine includes an ignition plug 4 which discharges by application of the ignition high voltage to fire a fuel-air mixture within a cylinder of an internal combustion engine, a bias circuit 5 for applying a bias voltage to the ignition plug, a current detector circuit 21 for detecting an ion current corresponding to the quantity of ions which are generated within the cylinder in which the fuel-air mixture is being burned as an ion current detection signal, knock signal processing means 24 to 27 for producing a knock decision signal representative of a knock occurrence state of the internal combustion engine on the basis of the ion current detection signal, and an ECU 15 for detecting the combustion state in the ignition plug on the basis of the ion current detection signal and the knock decision signal. The knock signal processing means sets a detection period of the knock decision signal on the basis of an integral value of the ion current detection signal.
摘要翻译：为了得到优化检测范围的燃烧状态检测装置，能够提高S / N比，能够提高内燃机的燃烧状态的检测精度，爆震检测的准确性。用于内燃机的燃烧状态检测装置包括：火花塞4，其通过施加点火高电压来排放内燃机的气缸内的燃料 - 空气混合物;偏置电路5，用于施加偏置电压火花塞，电流检测电路21，用于检测与燃料 - 空气混合物燃烧的气缸内产生的离子量对应的离子电流作为离子电流检测信号;爆震信号处理装置24〜27 用于根据离子电流检测信号产生代表内燃机的爆震发生状态的爆震判定信号;以及ECU15，用于基于离子电流检测信号检测火花塞中的燃烧状态;以及爆震决定信号。爆震信号处理装置根据离子电流检测信号的积分值设定爆震判定信号的检测周期。

4. 发明授权

US06205844B1 Combustion state detecting device for an internal combustion engine 失效
标题翻译：用于内燃机的燃烧状态检测装置
公开(公告)号：US06205844B1
公开(公告)日：2001-03-27
申请号：US09322024
申请日：1999-05-28
申请人： Shingo Morita , Koichi Okamura , Mituru Koiwa , Yutaka Ohashi
发明人： Shingo Morita , Koichi Okamura , Mituru Koiwa , Yutaka Ohashi
IPC分类号： G01L2322
CPC分类号： F02P17/12 , F02D35/027 , F02P2017/128
摘要： A combustion state detecting device for an internal combustion engine enables diverse combustion state detection by obtaining a plurality of currents analogous to an ion current. The combustion state detecting device includes a bias circuit 6 that applies an ion current detection voltage to an ignition plug 3 disposed in a cylinder of the internal combustion engine, an ion current signal distributor circuit 20 made up of a current mirror circuit for detecting the ion current on the basis of a voltage from the bias circuit, and current-voltage converter circuits 21 and 22, to thereby produce a plurality of currents analogous to the ion current by the ion current signal distributor circuit.
摘要翻译：用于内燃机的燃烧状态检测装置通过获得与离子电流类似的多个电流来实现不同的燃烧状态检测。燃烧状态检测装置包括对设置在内燃机的气缸中的火花塞3施加离子电流检测电压的偏置电路6，由用于检测离子的电流镜电路构成的离子电流信号分配电路20 基于来自偏置电路的电压以及电流 - 电压转换器电路21和22，从而由离子电流信号分配器电路产生类似于离子电流的多个电流。

5. 发明授权

US06202474B1 Ion current detector 失效
标题翻译：离子电流检测器
公开(公告)号：US06202474B1
公开(公告)日：2001-03-20
申请号：US09344378
申请日：1999-06-25
申请人： Yasuhiro Takahashi , Koichi Okamura , Mituru Koiwa , Yutaka Ohashi
发明人： Yasuhiro Takahashi , Koichi Okamura , Mituru Koiwa , Yutaka Ohashi
IPC分类号： G01L2322
CPC分类号： G01L23/221 , F02P17/12
摘要： For a purpose of improving detecting performance toward knocking in small and middle intensity which must be detected as a top priority to conduct regulation of ignition timing, a device is provided to vary an output gain of an alternating component included in an ion current in accordance with ion current quantity. An ion current detector to detect the ion current to be generated surrounding an ignition plug just after mixed gas inside a cylinder has been ignited with a spark discharge having occurred at the ignition plug due to a voltage generated by an ignition coil, comprises a bias voltage generating part to generate a high voltage for an ion current detection to be applied to the ignition plug via the ignition coil, an ion current-to-voltage conversion part to convert an ion current having flowed between electrodes of the ignition plug by the high voltage into a voltage, and a knock signal generator to extract and amplify a frequency band resembling knocks on the basis of voltage conversion effect.
摘要翻译：为了提高检测性能以敲击中小强度，必须将其作为最高优先级来检测点火正时的调节，提供一种装置，以改变包括在离子电流中的交替分量的输出增益，根据离子电流量。一种离子电流检测器，用于检测恰好在气缸内的混合气体之后即将产生的火花塞周围产生的离子电流已被点火线圈产生的电压引起的火花塞点火，包括偏置电压产生部分以产生用于经由点火线圈施加到火花塞的离子电流检测的高电压;离子电流 - 电压转换部分，用于将在火花塞的电极之间流动的离子电流转换为高电压成为一个电压，一个爆震信号发生器提取和放大一个类似敲击的频带，基于电压转换效应。

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