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1. 发明授权

US09890757B2 Electronic control of a spark plug for an internal combustion engine 有权
公开(公告)号：US09890757B2
公开(公告)日：2018-02-13
申请号：US13044059
申请日：2011-03-09
申请人： Hiroshi Mizukami , Hisanori Nobe , Toru Ikeda , Yoshiyuki Sera
发明人： Hiroshi Mizukami , Hisanori Nobe , Toru Ikeda , Yoshiyuki Sera
IPC分类号： F02P3/02 , F02P3/04 , F02P11/00 , F02P9/00
CPC分类号： F02P3/0442 , F02P9/002 , F02P11/00
摘要： An internal-combustion-engine electronic control system according to the present invention is provided with a power switching device that applies or shuts off a primary current of an ignition coil of an internal combustion engine so that at the secondary side of the ignition coil, there is generated a voltage for making an ignition plug of the internal combustion engine produce a spark discharge; and a control unit that turns on or off the power switching device. The internal-combustion-engine electronic control system is characterized in that the control unit is provided with a circuit unit that makes the power switching device softly shut off so as to prevent the ignition plug from producing the spark discharge, and in accordance with the characteristics of the power switching device, the control unit changes the characteristics of the soft shutoff halfway through the shutoff operation.

2. 发明授权

US06943554B2 Ionic current detection apparatus for internal combustion engine 有权
标题翻译：内燃机离子电流检测装置
公开(公告)号：US06943554B2
公开(公告)日：2005-09-13
申请号：US10644760
申请日：2003-08-21
申请人： Masakazu Dohi , Yoshiyuki Sera , Yasuhiro Takahashi
发明人： Masakazu Dohi , Yoshiyuki Sera , Yasuhiro Takahashi
IPC分类号： F02P15/00 , F02P17/12 , F02P17/00
CPC分类号： F02P17/12 , F02P2017/125 , F02P2017/128
摘要： An ionic current detection apparatus for an internal combustion engine does not generate a false ionic current, and hence it does not generate a false knock component signal either, thereby avoiding an incorrect combustion determination or an incorrect knock determination. The apparatus detects an ionic current generated in spark plugs connected with secondary sides of a plurality of ignition coils, respectively, each of which generates a high ignition voltage immediately after firing of a corresponding combustion chamber. The ignition coils are arranged in such a manner that at least the directions of adjacent ignition coils do not coincide with one another. In addition, the ignition coils are fixed by a fixture, which has arrangement positions for the ignition coils predetermined according to the mounting directions thereof, in such a manner that the directions of adjacent ignition coils do not coincide with one another, the ignition coils being installed on the engine through the fixture.
摘要翻译：用于内燃机的离子电流检测装置不产生假离子电流，因此也不会产生假爆震分量信号，从而避免不正确的燃烧确定或不正确的爆震判定。该装置分别检测与多个点火线圈的次级侧连接的火花塞中产生的离子电流，其中每个点火线圈在对应的燃烧室点火之后立即产生高的点火电压。点火线圈以至少相邻点火线圈的方向彼此不一致的方式布置。此外，点火线圈通过固定装置固定，其具有按照其安装方向预定的点火线圈的布置位置，使得相邻点火线圈的方向彼此不一致，点火线圈为通过灯具安装在发动机上。

3. 发明授权

US06931914B2 Combustion condition detection apparatus for an internal combustion engine 失效
标题翻译：一种用于内燃机的燃烧条件检测装置
公开(公告)号：US06931914B2
公开(公告)日：2005-08-23
申请号：US10422816
申请日：2003-04-25
申请人： Masakazu Dohi , Toshio Uchida , Yoshiyuki Sera , Yasuhiro Takahashi
发明人： Masakazu Dohi , Toshio Uchida , Yoshiyuki Sera , Yasuhiro Takahashi
IPC分类号： F02P17/12 , F02D45/00 , G01L23/22 , G01L23/32
CPC分类号： G01L23/225 , G01L23/221
摘要： A combustion condition detecting apparatus for an internal combustion engine has a current distributor that distributes an ion current, a band pass filter which extracts a knock vibration component from a current distributor output, a knock determination section which outputs a knock pulse if the extracted knock vibration component is larger than a knock detection threshold value, a combustion determination section which outputs a combustion pulse when an current distributor output is larger than a combustion pulse threshold value, an ignition signal determination section which makes a determination on the basis of an ignition signal as to whether energization of an ignition coil for ignition in another cylinder is started, and an ion current limiting section which limits its ion current output to the current distributor during a predetermined time period after the start of energization of the ignition coil for ignition in the another cylinder.
摘要翻译：用于内燃机的燃烧条件检测装置具有分配离子电流的电流分配器，从当前分配器输出中提取爆震振动分量的带通滤波器，如果提取的爆震振动分量大于爆震检测阈值的燃烧判定部，当燃料分配器输出大于燃烧脉冲阈值时输出燃烧脉冲的燃烧判定部，基于点火信号进行判定的点火信号判定部是否开始在另一个气缸中启动点火线圈点火线圈的通电，以及离子电流限制部分，在另一个气缸点火线圈通电开始之后的预定时间段期间限制其离子电流输出到分流器圆筒。

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