Apparatus for detecting abnormal combustion in a combustion engine
    9.
    发明授权
    Apparatus for detecting abnormal combustion in a combustion engine 有权
    用于检测内燃机异常燃烧的装置

    公开(公告)号:US09512788B2

    公开(公告)日:2016-12-06

    申请号:US14421306

    申请日:2013-11-13

    申请人: Hiroyuki Tanaka

    发明人: Hiroyuki Tanaka

    摘要: A spark ignition internal combustion engine includes: a compression ratio changing mechanism by which a volume of a combustion chamber varies; a cylinder internal pressure sensor that acquires a pressure signal of a pressure vibration inside a cylinder; and an abnormal combustion detector including a filter that passes the pressure signal, of a set frequency band among the pressure signal, and detecting an occurrence of abnormal combustion based on the pressure signal having passed through the filter. The abnormal combustion detector sets a frequency band of the filter based on a crank angle section in which abnormal combustion occurs and on a mechanical compression ratio.

    摘要翻译: 火花点火式内燃机包括:燃烧室体积变化的压缩比变化机构; 气缸内部压力传感器,其获取气缸内的压力振动的压力信号; 以及异常燃烧检测器,其包括通过压力信号之间的设定频带的压力信号的过滤器,并且基于已经通过过滤器的压力信号来检测异常燃烧的发生。 异常燃烧检测器基于发生异常燃烧的曲柄角部和机械压缩比来设定过滤器的频带。

    Surface acoustic wave filter and duplexer using same
    10.
    发明授权
    Surface acoustic wave filter and duplexer using same 有权
    表面声波滤波器和双工器使用相同

    公开(公告)号:US09041487B2

    公开(公告)日:2015-05-26

    申请号:US13379617

    申请日:2010-06-25

    申请人: Hiroyuki Tanaka

    发明人: Hiroyuki Tanaka

    摘要: An SAW filter and a duplexer excellent in electrical characteristics will be provided. An SAW filter has a piezoelectric substrate 40, a surface acoustic wave element 10 having a first IDT electrode 1 on the piezoelectric substrate 40, a first signal line 31 electrically connected to the first IDT electrode 1, and a ring-shaped reference potential line 9 which has a first intersecting portion intersecting with the first signal line 31 through an insulation member 41 and surrounds the surface acoustic wave element 10.

    摘要翻译: 将提供优异的电气特性的SAW滤波器和双工器。 SAW滤波器具有压电基板40,在压电基板40上具有第一IDT电极1的表面声波元件10,与第一IDT电极1电连接的第一信号线31和环状基准电位线9 其具有通过绝缘构件41与第一信号线31相交的第一相交部分并且包围声表面波元件10。