Fluid pressure sensing apparatus
    1.
    发明授权
    Fluid pressure sensing apparatus 失效
    流体压力传感装置

    公开(公告)号:US4261209A

    公开(公告)日:1981-04-14

    申请号:US14373

    申请日:1979-02-23

    IPC分类号: F02M65/00 G01L9/00 G01M15/00

    摘要: A sensor (16) is connected to a high pressure line (13) in a fuel injection system for an internal combustion engine. The sensor (16) produces an output current which is proportional to the pressure in the line (13). The current is converted into a corresponding voltage and a displayed a voltmeter (21). An alarm is produced when the voltage exceeds a predetermined value or range. A second voltmeter (23) is energized to display the voltage when the alarm is produced.

    摘要翻译: 传感器(16)连接到用于内燃机的燃料喷射系统中的高压管线(13)。 传感器(16)产生与线路(13)中的压力成比例的输出电流。 电流转换成相应的电压,并显示电压表(21)。 当电压超过预定值或范围时产生报警。 第二个电压表(23)被激励,以在报警产生时显示电压。

    Leakage sensor apparatus for fluid passageway
    2.
    发明授权
    Leakage sensor apparatus for fluid passageway 失效
    用于流体通道的泄漏传感器装置

    公开(公告)号:US4269061A

    公开(公告)日:1981-05-26

    申请号:US30231

    申请日:1979-04-16

    IPC分类号: G01M3/26 G01M3/28

    CPC分类号: G01M3/2815

    摘要: A fluid pressure passageway (14) such as a high pressure fuel line in a fuel injection system is pressurized to an upper predetermined value. Then, the passageway (14) is isolated and the length of time for the pressure to drop to a lower predetermined value is measured. The greater the degree of leakage, the shorter the measured length of time. An alarm (24) is energized when the measured length of time is shorter than a predetermined length of time.

    摘要翻译: 在燃料喷射系统中的诸如高压燃料管线的流体压力通道(14)被加压到上限值。 然后,通道(14)被隔离,并且测量压力下降到较低预定值的时间长度。 泄漏程度越大,测量的时间长度越短。 当测量的时间长度短于预定时间长度时,报警器(24)被通电。

    Apparatus for sensing Schnarren phenomenon in fuel injection line
    3.
    发明授权
    Apparatus for sensing Schnarren phenomenon in fuel injection line 失效
    用于感应燃油喷射管道中的Schnarren现象的装置

    公开(公告)号:US4231251A

    公开(公告)日:1980-11-04

    申请号:US30916

    申请日:1979-04-17

    IPC分类号: F02M65/00 G01M19/00

    CPC分类号: F02M65/003

    摘要: A sensor (16) produces an electrical signal corresponding to the pulsating pressure in a high pressure fuel line (13) leading to a fuel injection valve (14), the pulsations being produced by opening and closing of the valve (14). The electrical signal and a reference signal are fed to a cathode ray tube display unit (18) to produce a Lissajous figure. The shape of the Lissajous figure indicates whether the Schnarren phenomenon is present and, if so, to what extent. The frequencies or amplitudes of the electrical signal and reference signal are compared to produce a signal indicating the difference therebetween which is fed to a digital display unit (22).

    摘要翻译: 传感器(16)产生对应于通向燃料喷射阀(14)的高压燃料管路(13)中的脉动压力的电信号,所述脉动是由阀(14)的打开和关闭产生的。 电信号和参考信号被馈送到阴极射线管显示单元(18)以产生李萨如图。 李萨如图的形状表明,施奈恩现象是否存在,如果是,是否在多大程度上。 将电信号和参考信号的频率或幅度进行比较,以产生指示其馈送到数字显示单元(22)之间的差的信号。

    Loop antenna apparatus with variable directivity
    9.
    发明授权
    Loop antenna apparatus with variable directivity 失效
    具有可变方向性的环形天线装置

    公开(公告)号:US4358769A

    公开(公告)日:1982-11-09

    申请号:US233387

    申请日:1981-02-11

    IPC分类号: H01Q3/24 H01Q7/00 H01Q11/12

    CPC分类号: H01Q3/247 H01Q7/00

    摘要: A loop antenna apparatus is disclosed which includes a main conductive loop arranged on a first surface, a plurality of supplemental conductive loops connected to the main conductive loop and arranged on different surfaces from the first surface, respectively, a plurality of signal feeding points provided in different loops of the main and supplemental conductive loops, an output terminal and change-over switches for selectively connecting one of the plurality of signal feeding points to the output terminal.

    摘要翻译: 公开了一种环形天线装置,其包括布置在第一表面上的主导电回路,连接到主导电回路并分别布置在与第一表面不同的表面上的多个辅助导电回路,多个信号馈送点设置在 主要和补充导电环路的不同环路,输出端子和转换开关,用于选择性地将多个信号馈送点之一连接到输出端子。