发明名称 |
Method for fabricating spark plug with piezoelectric sensor and spark plug fabricated by the same |
摘要 |
A spark plug fabricating method and a spark plug fabricated by the same are provided. The spark plug is equipped with a piezoelectric sensor working to measure the pressure of combustion of fuel in an engine and required to apply a given preload to the piezoelectric sensor at all the time. The piezoelectric sensor is disposed within a holder and retained between the holder and a porcelain insulator. The fabrication method includes the steps of pressing the holder to apply a required preload to the piezoelectric sensor in a longitudinal direction of the porcelain insulator and joining the holder to a metal shell while maintaining the preload applied to the piezoelectric sensor as it is.
|
申请公布号 |
US6756722(B2) |
申请公布日期 |
2004.06.29 |
申请号 |
US20020175066 |
申请日期 |
2002.06.20 |
申请人 |
DENSO CORPORATION |
发明人 |
HIRAMATSU HIROMI |
分类号 |
H01L41/09;G01L23/22;H01L41/22;H01T13/20;H01T13/40;H01T21/02;H02N2/00;(IPC1-7):H01T13/22 |
主分类号 |
H01L41/09 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|