发明授权
- 专利标题: Glow plug
-
申请号: US14457618申请日: 2014-08-12
-
公开(公告)号: US09739487B2公开(公告)日: 2017-08-22
- 发明人: Tadashi Watanabe , Yoshihiro Yamamoto , Toshiki Hirokawa , Akimitsu Sassa
- 申请人: NGK SPARK PLUG CO., LTD.
- 申请人地址: JP Nagoya
- 专利权人: NGK SPARK PLUG CO. LTD.
- 当前专利权人: NGK SPARK PLUG CO. LTD.
- 当前专利权人地址: JP Nagoya
- 代理机构: Stites & Harbison, PLLC
- 代理商 Jeffrey A. Haeberlin; Joseph P. Morris
- 优先权: JP2013-168199 20130813; JP2014-117569 20140606
- 主分类号: F23Q7/22
- IPC分类号: F23Q7/22 ; F23Q7/00 ; F02P19/02 ; G01L23/22
摘要:
A glow plug includes a cylindrical housing, a rod-shaped heater, a membrane portion, and a pressure sensor. The cylindrical housing extends along an axial direction. The rod-shaped heater extending along the axial direction is displaced along the axial direction and has one end portion disposed within the housing, and an other end portion which is exposed from the housing. The membrane portion connects together the heater and the housing and has a multi-layer construction which has a first layer and a second layer of which at least part is positioned nearer to the other end portion in the axial direction of the heater than the first layer. The pressure sensor measures a pressure within a combustion chamber in which the other end portion is disposed by making use of a displacement of the heater. A thickness of the second layer is larger than a thickness of the first layer.
公开/授权文献
- US20150047592A1 GLOW PLUG 公开/授权日:2015-02-19