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    • 8. 发明授权
    • Knock detecting apparatus for internal combustion engines
    • 内燃机爆震检测装置
    • US4336707A
    • 1982-06-29
    • US152986
    • 1980-05-27
    • Hiroaki YamaguchiTadashi HattoriYoshinori Ootsuka
    • Hiroaki YamaguchiTadashi HattoriYoshinori Ootsuka
    • G01L23/22
    • G01L23/223
    • A vibrator having a resonant frequency within a knocking frequency range forms a part of a magnetic path. The vibrator vibrates in response to the vibration of an internal combustion engine and this changes the reluctance of the magnetic path. The change in the reluctance is sensed by a coil to detect the presence of knock. The vibrator is enclosed with a damper substance consisting of a liquid or sol substance having viscosity of flow properties so that the vibration of the vibrator is restricted and the Q of the resonance characteristic of the vibrator is deteriorated, thus increasing the substantial range of frequency detection of the apparatus. If necessary, the damper substance is heated to maintain its viscosity at a predetermined value.
    • 具有爆震频率范围内的谐振频率的振动器形成磁路的一部分。 振动器响应于内燃机的振动而振动,这改变了磁路的磁阻。 磁阻的变化由线圈感测以检测爆震的存在。 振动器由具有流动性粘度的液体或溶胶物质构成的阻尼物质包围,使得振动器的振动受到限制,振动器的共振特性的Q劣化,从而增加了频率检测的实质范围 的装置。 如果需要,阻尼物质被加热以将其粘度保持在预定值。
    • 10. 发明授权
    • Method of and apparatus for sensing knocking in internal combustion
engine
    • 检测内燃机爆震的方法及装置
    • US4452069A
    • 1984-06-05
    • US335283
    • 1981-12-28
    • Tadashi HattoriMasanori HanaokaYukihide HashiguchiYoshinori OotsukaHiroaki Yamaguchi
    • Tadashi HattoriMasanori HanaokaYukihide HashiguchiYoshinori OotsukaHiroaki Yamaguchi
    • G01L9/00G01L19/06G01L23/22
    • G01L19/148G01L19/0038G01L19/0609G01L19/0645G01L23/221
    • A method of sensing a knocking taking place in an internal combustion engine through the sensing of pulsative component of the cooling water pressure or lubricating oil pressure. The sensing of the pulsative component is made by removing the static component from the composite pressure which is the sum of the pulsative component and the static component. An apparatus for sensing a knocking taking place in an internal combustion engine has a differential pressure sensing mechanism including a pressure sensing diaphragm and a pulsation absorption mechanism. The pressure sensing diaphragm receives at its one side the composite cooling water pressure or composite lubricating oil pressure which is the sum of the pulsative component and static component. The pulsation absorption mechanism absorbs the pulsative component from the composite pressure so as to transmit only the static component of the pressure to the other side of the pressure sensing diaphragm. In consequence, the pressure sensing diaphragm is deflected only in response to the pulsative component of the pressure without being affected by the static component.
    • 一种通过感测冷却水压力或润滑油压力的脉动分量来感测在内燃机中发生爆震的方法。 通过从作为脉动分量和静态分量的总和的复合压力中去除静态分量来进行脉动分量的感测。 用于感测在内燃机中发生爆震的装置具有包括压力检测膜片和脉动吸收机构的差压检测机构。 压力传感隔膜在其一侧接收作为脉动分量和静态分量之和的复合冷却水压力或复合润滑油压力。 脉动吸收机构从复合压力吸收脉动成分,仅将压力的静态分量传递到压力感测膜片的另一侧。 因此,只有响应于压力的脉动分量而不受静电部件的影响,压力感测膜片就会偏转。