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    • 2. 发明授权
    • Low viscous drag knock sensor
    • 低粘滞阻力传感器
    • US4630465A
    • 1986-12-23
    • US672402
    • 1984-11-19
    • Bruce M. Hatton
    • Bruce M. Hatton
    • G01L23/22G10K13/00
    • G01L23/221G01L23/222G10K13/00
    • A housing (A) which is connected with an internal combustion engine to be vibrated therewith. A diaphragm (B) is mounted in an interior chamber of the housing to undergo vibration therewith. The diaphragm is constructed to have a natural resonant frequency which substantially matches the knock frequency of the engine model for which the knock sensor is designed. The diaphragm is mounted to the housing by a central portion (20) such that an edge portion (24) undergoes maximum resonant displacement. To facilitate the passage of air from one side of the diaphragm to the other during near resonant displacement, a plurality of apertures (26) are provided through the diaphragm edge portion. In this manner, viscous drag is reduced which increases the magnitude of the resonant displacement and decreases the bandwidth or range of frequencies over which the diaphragm undergoes significant displacement. A piezoelectric element (30) is connected with the diaphragm to provide an electrical output signal which varies with the diaphragm displacement.
    • 与内燃机连接以与其振动的壳体(A)。 隔膜(B)安装在壳体的内部室中以与其一起振动。 隔膜被构造成具有与设计爆震传感器的发动机模型的爆震频率基本一致的固有谐振频率。 隔膜通过中心部分(20)安装到壳体,使得边缘部分(24)经受最大的共振位移。 为了便于在接近谐振位移期间将空气从隔膜的一侧通过到另一侧,通过隔膜边缘部分提供多个孔(26)。 以这种方式,粘性阻力减小,这增加了谐振位移的幅度并且减小了隔膜经历显着位移的带宽或频率范围。 压电元件(30)与隔膜连接以提供随隔膜位移而变化的电输出信号。
    • 4. 发明授权
    • Low-leakage air valve for variable air intake system
    • 用于可变进气系统的低泄漏空气阀
    • US06135418A
    • 2000-10-24
    • US247409
    • 1999-02-10
    • Bruce M. Hatton
    • Bruce M. Hatton
    • F02B27/02F02D9/10F02M35/104F16K1/226
    • F02D9/1045F02B27/0273F02D9/1015F02D9/106F02D9/1095B29L2031/7506F02B27/0215F05C2201/021Y02T10/146Y10T137/87885
    • A low-leakage air valve assembly 10 for an air intake manifold 16 includes a butterfly valve 12 constructed for mounting on a rotatable shaft 14. The butterfly valve 12 includes a first 32 and a second wing 34 with first elastic sealing means 36 mounted about the periphery of the first wing 32, and second elastic sealing means 40 mounted about the periphery of the second wing 34. The first elastic sealing means 32 includes a projecting lip 38 for sealingly contacting the wall of the valve manifold 16. The second elastic sealing means 40 includes a beam portion 42 for sealing contact with shoulder 28 of manifold 16. Third elastic sealing means 44 is axially positioned at each side of the passage 30 in the butterfly valve 12 and radially provided around a portion thereof. The first area 54 defined by the first sealing surface which is the first wing 32 and first elastic sealing means 36 is larger than the second area 56 defined by the second wing 34 and second elastic sealing means 40. This provides a net torque which increases the sealing force of the valve.
    • 用于进气歧管16的低泄漏空气阀组件10包括构造用于安装在可旋转轴14上的蝶阀12.蝶阀12包括第一和第二翼34,第一翼32和第二翼34围绕 第一翼32的周边以及围绕第二翼34的周边安装的第二弹性密封装置40.第一弹性密封装置32包括用于密封地接触阀歧管16的壁的突出唇部38.第二弹性密封装置 40包括用于与歧管16的肩部28密封接触的梁部42.第三弹性密封装置44轴向地定位在蝶阀12中的通道30的每一侧,并且围绕其一部分径向设置。 由作为第一翼32和第一弹性密封装置36的第一密封表面限定的第一区域54大于由第二翼片34和第二弹性密封装置40限定的第二区域56.这提供了净扭矩, 阀门的密封力。
    • 5. 发明授权
    • Vibration transducer assembly
    • 振动传感器组件
    • US5212421A
    • 1993-05-18
    • US622703
    • 1990-12-05
    • Bruce M. HattonJaklin YoesepStephen M. Hutchings
    • Bruce M. HattonJaklin YoesepStephen M. Hutchings
    • G01H11/08
    • G01H11/08
    • A vibration transducer for sensing engine knock. On embodiment for resonance upon vibration at frequencies in the range of 5-7 KHz has a centrally stanchion-supported overhanging metal disc with an annular stiffening portion formed with in transverse section with contracurvature and generally rectangular configuration for minimizing ringing. Piezoelectric material is bonded to the disc surface inwardly of the stiffening portion for providing an electrical signal during resonant disc flexure. A second embodiment for resonance upon vibration at frequencies in the range of 9-15 KHz has a centrally stanchion-supported overhanging metal disc with an annular stiffening portion for minimizing ringing formed in transverse section with contracurvature comprising a generally semicircular convolution. Piezoelectric material is bonded to the disc surface and bridges the stiffening portion and provides an electrical signal during resonant disc flexure.
    • 用于感应发动机爆震的振动传感器。 在5-7KHz范围内的振动振动的共振实施例具有中央支柱支撑的悬垂金属盘,其具有环形加强部分,该环形加强部分以横截面形成,具有相反的尺寸和大致矩形的构造以最小化振铃。 压电材料在加强部分的内部结合到盘表面,以在共振盘弯曲期间提供电信号。 用于在9-15KHz范围内的频率振动时的振动共振的第二实施例具有中心支柱支撑的悬垂金属盘,其具有环形加强部分,用于使横截面中形成的振铃最小化,其中包括大致半圆形的卷积。 压电材料结合到盘表面并桥接加强部分,并在共振盘弯曲期间提供电信号。