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    • 3. 发明公开
    • COMBUSTION PRESSURE SENSOR AND GLOW PLUG
    • 哥伦比亚广播公司(VERBRENNUNGSDRUCKSENSOR UNDGLÜHKERZE)
    • EP3062018A2
    • 2016-08-31
    • EP16153665.1
    • 2016-02-01
    • NGK Spark Plug Co., Ltd.
    • NISHIYUKI, KenjiroKAWAKATSU, MasahiroHIROKAWA, ToshikiHARADA, HiroshiSASSA, Akimitsu
    • F23Q7/00G01L23/10G01L23/22F02P19/02G01M15/08
    • [Objective] To improve the accuracy in detecting combustion pressure by a sensor element.
      [Means for Solution] An elastic member of a combustion pressure sensor has a first tubular portion joined to a rod-like member; a first curved portion extending radially outward from a portion of the first tubular portion on the rear end side thereof; a second curved portion extending radially outward from a portion of the first curved portion on the outer circumferential side thereof; and a second tubular portion connected to a housing. The housing has a forward end portion which constitutes an opening portion, accommodates at least a portion of the first tubular portion, the first curved portion, the second curved portion, and at least a portion of the second tubular portion, and forms a gap between the forward end portion and at least a portion of an outer surface of the second tubular portion. The combustion pressure sensor further comprises a wall portion which is disposed within the forward end portion to be located on the forward end side of the second curved portion and overlaps with at least a portion of the second curved portion as viewed in the axial direction.
    • [目的]提高传感器元件检测燃烧压力的精度。 解决方案的燃烧压力传感器的弹性构件具有连接到杆状构件的第一管状部分; 从第一管状部分的后端侧的一部分径向向外延伸的第一弯曲部分; 第二弯曲部,其在第一弯曲部的外周侧的一部分的径向外侧延伸; 以及连接到壳体的第二管状部分。 壳体具有构成开口部分的前端部,容纳第一管状部分,第一弯曲部分,第二弯曲部分和至少一部分第二管状部分的至少一部分,并且在第二管状部分的至少一部分之间形成间隙 前端部分和第二管状部分的外表面的至少一部分。 燃烧压力传感器还包括壁部,其设置在前端部中,以位于第二弯曲部的前端侧,并且与轴向方向上的第二弯曲部的至少一部分重叠。