Seal for single wire O.sub.2 sensor
    2.
    发明授权
    Seal for single wire O.sub.2 sensor 失效
    单线O2传感器密封

    公开(公告)号:US4786397A

    公开(公告)日:1988-11-22

    申请号:US107619

    申请日:1987-10-09

    摘要: An oxygen sensor (10) having an electrolyte sensor (40) located in a metal shell (14) and an insulating terminal (102) located in a metal sleeve (72). The metal sleeve (72) is secured to the metal shell (14) to define a reference chamber (68) adjacent the interior of the electrolyte sensor (46). A closed end (74) on the sleeve (72) has a plurality of openings (76, 76.sup.1 . . . 76.sup.n) surrounding a central opening (78). A porous filter (90) has a base (92) that is continually urged against end (74) by the action of spring (118) on terminal (102). A grommet (124) located in the central opening (78) has a cylindrical body with a flange (136) that radially engages filter (90) and a series of lands (132, 132.sup.1 or 132.sup.n) that form a plurality of sealing surfaces on lead (12) that connects the electrolyte sensor (46) with a controller. Changes in temperature which cause the components of sensor (10) to expand and contract at different rates are compensated by the grommet (124) and filter (90) to assure that water does not enter the reference chamber (68) through the openings in the closed end (74).

    摘要翻译: 具有位于金属壳体(14)中的电解质传感器(40)和位于金属套筒(72)中的绝缘端子(102)的氧传感器(10)。 金属套筒(72)固定到金属壳体(14)上以限定邻近电解质传感器(46)内部的参考室(68)。 套筒(72)上的封闭端(74)具有围绕中心开口(78)的多个开口(76,76 ... 76n)。 多孔过滤器(90)具有通过端子(102)上的弹簧(118)的作用而连续地推靠在端部(74)上的基部(92)。 位于中心开口(78)中的索环(124)具有圆柱形主体,其具有径向接合过滤器(90)的凸缘(136)和一系列在多个密封表面上形成的密封表面的平台(132,1321或132n) 将电解质传感器(46)与控制器连接的引线(12)。 导致传感器(10)的部件以不同速率膨胀和收缩的温度变化由索环(124)和过滤器(90)补偿,以确保水不会通过所述孔中的开口进入参考室(68) 封闭端(74)。