公开(公告)号：US20160177909A1

公开(公告)日：2016-06-23

申请号：US14579459

申请日：2014-12-22

申请人： NGK Spark Plug Co., LTD.

发明人： Hiroyuki SUZUKI ,  Hiroki TSUCHIYA ,  Akimitsu SASSA

IPC分类号： F02P19/02 ,  F23Q7/00

CPC分类号： F23Q7/001 ,  F23Q2007/002 ,  F23Q2007/005

摘要： A glow plug includes a housing having an axial hole extending in an axial line direction; a ceramic heater that is relatively displaceable with respect to the housing along the axial line direction and has at least outer surface made of ceramic; and a pressure sensor fixed to the housing and configured to output a signal based on the relative displacement of the ceramic heater. A fixed member fixed to the ceramic heater while the ceramic heater is arranged to an inner circumference of the fixed member. A welded member is welded to an outer circumference of the fixed member. An inner circumferential surface of a portion of the fixed member to which at least the welded member is welded is spaced apart from the outer surface of the ceramic heater.

摘要翻译： 电热塞包括具有沿轴线方向延伸的轴向孔的壳体; 陶瓷加热器，其相对于所述壳体沿着轴线方向相对移位并且具有至少由陶瓷制成的外表面; 以及压力传感器，其被固定到所述壳体并且被配置为基于所述陶瓷加热器的相对位移输出信号。 固定在陶瓷加热器上的固定部件，陶瓷加热器布置在固定部件的内圆周上。 焊接部件焊接在固定部件的外周。 固定构件的至少焊接部件焊接的部分的内周面与陶瓷加热器的外表面间隔开。