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    FREQUENCY SPECTRUM ANALYZING APPARATUS
    1.
    发明申请
    FREQUENCY SPECTRUM ANALYZING APPARATUS 有权
    频谱分析仪

    公开(公告)号：US20110178750A1

    公开(公告)日：2011-07-21

    申请号：US13120433

    申请日：2009-09-09

    申请人： Natsuko Kitamura ,  Yoshiaki Akimoto ,  Jiro Takagi ,  Atsushi Kurauchi ,  Masayuki Yoshiiri ,  Hirotaka Komatsu ,  Kazuhiko Hirota ,  Makoto Murakami

    发明人： Natsuko Kitamura ,  Yoshiaki Akimoto ,  Jiro Takagi ,  Atsushi Kurauchi ,  Masayuki Yoshiiri ,  Hirotaka Komatsu ,  Kazuhiko Hirota ,  Makoto Murakami

    IPC分类号： G01R23/16

    CPC分类号： G01R23/16 ,  G01L23/221 ,  G01L23/225 ,  G01M15/12 ,  G05B15/00 ,  G06F17/00 ,  G06F19/00

    摘要： A frequency spectrum analyzing apparatus for performing a frequency spectrum analysis with respect to a detected value of an operating parameter of an internal combustion engine in synchronism with rotation of the engine, is provided. The operating parameter is sampled at predetermined time intervals, and a sampled value is converted to a digital value. Intensities of first and second elements are calculated with respect to a predetermined number of the sampled values. The first elements and second elements respectively correspond to a plurality of frequency components contained in the detected value, and a phase of the second element differs from a phase of the first element by 90 degrees. Frequency component intensities corresponding to the plurality of frequency components are calculated in synchronism with rotation of the engine, using the first element intensities and the second element intensities. The frequency component intensities are calculated by replacing a part of an integrated value of the first element intensities, and a part of an integrated value of the second element intensities respectively with corresponding preceding calculated values, when an rotational speed of the engine is higher than or equal to a set threshold value.

    摘要翻译： 提供了一种频谱分析装置，用于与发动机的旋转同步地执行关于内燃机的操作参数的检测值的频谱分析。 以预定的时间间隔对操作参数进行采样，并将采样值转换为数字值。 相对于预定数量的采样值来计算第一和第二元素的强度。 第一元件和第二元件分别对应于包含在检测值中的多个频率分量，并且第二元件的相位与第一元件的相位不同90度。 使用第一元件强度和第二元件强度，与发动机的旋转同步地计算与多个频率分量对应的频率分量强度。 通过将发动机的转速高于或等于的第一元件强度的积分值的一部分和第二元件强度的积分值的一部分分别与相应的先前计算值相对应地计算频率分量强度， 等于设定的阈值。

    Frequency spectrum analyzing apparatus
    2.
    发明授权
    Frequency spectrum analyzing apparatus 有权
    频谱分析装置

    公开(公告)号：US08725463B2

    公开(公告)日：2014-05-13

    申请号：US13120433

    申请日：2009-09-09

    申请人： Natsuko Kitamura ,  Yoshiaki Akimoto ,  Jiro Takagi ,  Atsushi Kurauchi ,  Masayuki Yoshiiri ,  Hirotaka Komatsu ,  Kazuhiko Hirota ,  Makoto Murakami

    发明人： Natsuko Kitamura ,  Yoshiaki Akimoto ,  Jiro Takagi ,  Atsushi Kurauchi ,  Masayuki Yoshiiri ,  Hirotaka Komatsu ,  Kazuhiko Hirota ,  Makoto Murakami

    IPC分类号： G01R23/16 ,  G06F17/00 ,  G06F19/00 ,  G01L23/22 ,  G05B15/00

    CPC分类号： G01R23/16 ,  G01L23/221 ,  G01L23/225 ,  G01M15/12 ,  G05B15/00 ,  G06F17/00 ,  G06F19/00

    摘要： A frequency spectrum analyzing apparatus for performing a frequency spectrum analysis with respect to a detected value of an operating parameter of an internal combustion engine in synchronism with rotation of the engine, is provided. The operating parameter is sampled at predetermined time intervals, and a sampled value is converted to a digital value. Intensities of first and second elements are calculated with respect to a predetermined number of the sampled values. The first elements and second elements respectively correspond to a plurality of frequency components contained in the detected value, and a phase of the second element differs from a phase of the first element by 90 degrees. Frequency component intensities corresponding to the plurality of frequency components are calculated in synchronism with rotation of the engine, using the first element intensities and the second element intensities. The frequency component intensities are calculated by replacing a part of an integrated value of the first element intensities, and a part of an integrated value of the second element intensities respectively with corresponding preceding calculated values, when an rotational speed of the engine is higher than or equal to a set threshold value.

    摘要翻译： 提供了一种频谱分析装置，用于与发动机的旋转同步地执行关于内燃机的操作参数的检测值的频谱分析。 以预定的时间间隔对操作参数进行采样，并将采样值转换为数字值。 相对于预定数量的采样值来计算第一和第二元素的强度。 第一元件和第二元件分别对应于包含在检测值中的多个频率分量，并且第二元件的相位与第一元件的相位不同90度。 使用第一元件强度和第二元件强度，与发动机的旋转同步地计算与多个频率分量对应的频率分量强度。 通过将发动机的转速高于或等于的第一元件强度的积分值的一部分和第二元件强度的积分值的一部分分别与相应的先前计算值相对应地计算频率分量强度， 等于设定的阈值。

    Knocking control system for internal combustion engines
    6.
    发明授权
    Knocking control system for internal combustion engines 失效
    内燃机爆震控制系统

    公开(公告)号：US4960094A

    公开(公告)日：1990-10-02

    申请号：US419575

    申请日：1989-10-10

    申请人： Yuzuru Koike ,  Yukio Miyashita ,  Yoshiaki Akimoto ,  Yasunari Seki ,  Isao Yahata

    发明人： Yuzuru Koike ,  Yukio Miyashita ,  Yoshiaki Akimoto ,  Yasunari Seki ,  Isao Yahata

    IPC分类号： F02D13/02 ,  F02D41/34 ,  F02P5/152

    CPC分类号： F02D13/0203 ,  F02D35/027 ,  F02D41/345 ,  F02P5/152 ,  F02B2275/18 ,  F02D2041/001 ,  Y02T10/18 ,  Y02T10/44 ,  Y02T10/46

    摘要： A knocking control system for an internal combustion engine with inlet valves and exhaust valves having valve timing thereof controlled depending on operating conditions of the engine. It is determined whether or not knocking has occurred in the engine on the basis of a detection parameter indicative of knocking and at least one discrimination parameter. The operation of the engine is controlled by the use of at least one control parameter in response to the determination result, so as to eleminate knocking. The values of the discrimination and control parameters are selected in accordance with the actual valve timing. When abnormality in the valve timing control is detected, the valve timing is held at predetermined valve timing irrespective of engine operating conditions, and values of the at least one discriminating parameter and the at least one control parameter are selected, which correspond to the held predetermined valve timing. Alternatively, when abnormality in the valve timing control is detected, the above control of the engine operation is inhibited.

    摘要翻译： 具有入口阀和排气阀的内燃机的爆震控制系统，其具有根据发动机的运行条件控制其气门正时。 基于指示爆震的检测参数和至少一个判别参数来确定发动机中是否发生了爆震。 通过响应于确定结果使用至少一个控制参数来控制发动机的操作，以便敲击。 鉴别和控制参数的值根据实际气门正时选择。 当检测到气门正时控制中的异常时，不管发动机工作条件如何，都将气门正时保持在预定的阀定时，并且选择至少一个鉴别参数和至少一个控制参数的值，这些值对应于所保持的预定 气门正时。 或者，当检测到气门正时控制的异常时，禁止上述的发动机运转控制。

    Piston behavior analyzing sensor mounting structure and piston behavior analyzing method
    7.
    发明授权
    Piston behavior analyzing sensor mounting structure and piston behavior analyzing method 失效
    活塞行为分析传感器安装结构和活塞行为分析方法

    公开(公告)号：US06536266B1

    公开(公告)日：2003-03-25

    申请号：US09573202

    申请日：2000-05-19

    申请人： Yoshiaki Akimoto

    发明人： Yoshiaki Akimoto

    IPC分类号： G01L320

    CPC分类号： G01M15/06 ,  G01M15/042

    摘要： Pairs of sensors are disposed vertically, each pair of sensors being disposed such that they hold a piston laterally, and those pistons are provided in such a manner as to extend across a water jacket provided so as to surround a cylinder liner defining a cylinder chamber receiving therein the piston. Since sensor accommodating cases extend across the water jacket, the accommodating case can preferably be cooled by cooling water, and the sensors can in turn be cooled via the accommodating cases, whereby the effect of heat from combustion chambers on the sensors can be reduced, thereby making it possible to improve the detection accuracy of the sensors.

    摘要翻译： 一对传感器被垂直地设置，每对传感器被设置成使得它们横向地保持活塞，并且这些活塞以这样的方式设置，以便延伸穿过水套，该水套设置成围绕限定汽缸室接收的气缸套 其中活塞。 由于传感器容纳盒延伸穿过水套，容纳壳体可以优选地通过冷却水冷却，并且传感器可以通过容纳壳体进行冷却，从而可以减少来自燃烧室的热量对传感器的影响，由此 可以提高传感器的检测精度。

    Oil passage arrangement in a piston
    8.
    发明授权
    Oil passage arrangement in a piston 失效
    活塞中的油通道排列

    公开(公告)号：US06324961B1

    公开(公告)日：2001-12-04

    申请号：US09506937

    申请日：2000-02-18

    申请人： Yoshiaki Akimoto ,  Hideo Ueshima ,  Yukihiro Noguchi ,  Hideaki Miyashita

    发明人： Yoshiaki Akimoto ,  Hideo Ueshima ,  Yukihiro Noguchi ,  Hideaki Miyashita

    IPC分类号： F01B3110

    CPC分类号： F16J1/09 ,  F01M2001/083 ,  F01M2001/086 ,  F02F3/22

    摘要： Oil passages 12 for lubricating and cooling a piston pin 10 are provided in such a manner as to each open to an oil ring groove 5 of a piston 1 and to a piston inner side surface 2b of a piston pin supporting part 2 at portions in the vicinity of an upper end of a piston-pin hole 2a through the piston pin supporting part 2. The oil passages 12 are provided diagonally relative to an axis of the piston-pin hole 2a.

    摘要翻译： 用于润滑和冷却活塞销10的油路12以这样的方式设置，以便在活塞1的油环槽5和活塞销支撑部件2的活塞内侧表面2b处 通过活塞销支撑部2活塞销孔2a的上端附近。油通道12相对于活塞销孔2a的轴线对角地设置。

    Ignition timing control system for internal combustion engine
    9.
    发明授权
    Ignition timing control system for internal combustion engine 失效
    内燃机点火时间控制系统

    公开(公告)号：US5131369A

    公开(公告)日：1992-07-21

    申请号：US737079

    申请日：1991-07-29

    申请人： Masaki Kanehiro ,  Yukio Miyashita ,  Yoshiaki Akimoto

    发明人： Masaki Kanehiro ,  Yukio Miyashita ,  Yoshiaki Akimoto

    IPC分类号： F02P5/152

    CPC分类号： F02P5/1527 ,  Y02T10/46

    摘要： A system for controlling ignition timing of a vehicle internal combustion engine, in which a plurality of sets of ignition timing control characteristics are established in response to the octane numbers of different kinds of fuel which may intentionally or unintentionally be used in the vehicle. The system infers the octane number of the fuel being used from the occurrence state of knock and selects the set of control characteristics corresponding to the selected fuel octane number, whereafter it determines the ignition timing based on the selected set of control characteristics. The system overcomes the disadvantages of the conventional system, namely that when the set of characteristics for low octane number fuel is misselected when the vehicle is running on high octane number fuel, resulting in unnecessary reduction of output torque, either the conditions under which it is possible to forcibly shift to the set of conditions for high octane number fuel are limited to special ones, specifically to low engine speed operating condition, or if not so limited, the knock which occurs when the forcible shift is carried out causes a shift in the opposite direction, whereby the control experiences undesirable hunting.

    摘要翻译： 一种用于控制车辆内燃机的点火正时的系统，其中响应于可能在车辆中有意或无意地使用的不同种类的燃料的辛烷值来建立多组点火正时控制特性。 该系统推测出从爆震的发生状态使用的燃料的辛烷值，并选择与所选择的燃料辛烷值相对应的一组控制特性，然后基于所选择的一组控制特性来确定点火正时。 该系统克服了常规系统的缺点，即当车辆以高辛烷值燃料运行时，当低辛烷值燃料的特性组被错误选择时，导致输出转矩的不必要的降低， 可能强制转移到高辛烷值燃料的条件集合限于专用燃料，特别是低发动机转速运行条件，或者如果不是这样限制，则进行强制转换时发生的爆震会导致 相反的方向，由此控制经历不良的打猎。