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1. 发明公开

EP2105671A2 Glow plug 有权
标题翻译： Glühkerze
公开(公告)号：EP2105671A2
公开(公告)日：2009-09-30
申请号：EP09156542.4
申请日：2009-03-27
申请人： NGK Sparkplug Co., Ltd.
发明人： Itoh, Shinsuke , Maeda, Shunsuke , Suda, Masanori , Matsuoka, Toshiyuki
IPC分类号： F23Q7/00
CPC分类号： F23Q7/001 , F02P19/028 , F23Q2007/002
摘要： A glow plug comprising a pressure sensor with a reduced pressure load due to temperature changes is provided.
A glow plug includes a pressure sensor (830) and a heater (150). The glow plug includes a position-defining member which defines the positional relation between the pressure sensor (830) and the heater (150) and has a coefficient of thermal expansion greater than that of the heater. The pressure sensor (830) is fixed at a predetermined sensor reference position which refers to the position-defining member. The heater (150) is held in such a manner that an attachment position A on the heater can displace from a predetermined heater reference position A which refers to the position-defining member. A displacement transmission member (840) is provided between the heater (150) and the pressure sensor (830) so as to transmit a displacement of the heater (150) to the pressure sensor (830). The coefficient of thermal expansion of the displacement transmission member (840) is rendered greater than that of the position-defining member.
摘要翻译：提供一种电热塞，其包括由于温度变化而具有减压负载的压力传感器。电热塞包括压力传感器（830）和加热器（150）。电热塞包括限定了压力传感器（830）和加热器（150）之间的位置关系并且具有大于加热器的热膨胀系数的位置限定件。压力传感器（830）固定在参考位置限定构件的预定的传感器基准位置。加热器（150）保持在加热器上的安装位置A可以从参考位置限定部件的预定加热器基准位置A移位。在加热器（150）和压力传感器（830）之间设置有位移传递构件（840），以将加热器（150）的位移传递到压力传感器（830）。位移传递构件（840）的热膨胀系数大于位置限定构件的热膨胀系数。

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