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Patent Searching and Data

Document Type and Number:
WIPO Patent Application WO/2019/196730
Kind Code:
Disclosed is a high-temperature-resistant spark plug, comprising a spark plug housing, an insulator, and a central electrode. A negative sparking unit is provided above the central electrode, and comprises a shell and a negative electrode. The lower end of the shell is embedded and fixed in the spark plug housing. A cavity in the shell and a hollow cavity in the spark plug housing form an expansion chamber, wherein central vent holes are provided at the center of the bottom of the shell of the negative sparking unit, a longitudinal arc-shaped groove is provided on the outer side wall of the shell, and the arc-shaped groove extends from the lower end of the shell to the upper end that is not covered by the spark plug housing. A horizontal negative electrode is provided on the shell, and a tip of the negative electrode is spaced apart from the top of the central electrode by a sparking distance. According to the high-temperature-resistant spark plug of the present invention, heat accumulation phenomena would not occur in the top of the negative sparking unit, which avoids overheating damage of the negative electrode and effectively prevents waste gas accumulation in the hollow cavity.

LIU, Mengzhu (146-8, Tieshui Road Bali Village, Zhangqi Count, Cixi Zhejiang 3, 315313, CN)
LIU, Quan (508-2-1901, Wangjingdongyuan Chaoyang District, Beijing 2, 100102, CN)
Application Number:
Publication Date:
October 17, 2019
Filing Date:
April 04, 2019
Export Citation:
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MXTL CO. LTD (B801-008, 8th FloorXueyanzonghe Building, Qinghua University, Inside of Qinghuayuan, Haidian District, Beijing 2, 100062, CN)
International Classes:
H01T13/32; H01T13/54
Foreign References:
Attorney, Agent or Firm:
BEIJING JWT INTELLECTUAL PROPERTY CO., LTD. (XU Tianyi, Suite 801 Tower 2, SoBoss Center, No.16 South Sanhuan West Road, Fengtai District, Beijing 8, 100068, CN)
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