Title:
グロープラグ
Document Type and Number:
Japanese Patent JP4169929
Kind Code:
B2
Abstract:
A glow plug includes an inner pole and a ceramic heating rod disposed in and fixed to an outer shell at uppermost and lowermost pole fixed portions A, C and a heating rod fixed portion D. A ratio of L2/L1 is larger than 2, where L1 is a distance from the lower end of the inner pole to the lower end of the fixed portion C; and L2 is a distance from the lower end of the inner pole to the lower end of the fixed portion A. A ratio of L3/L4 is smaller than 15, wherein L3 is a distance from a middle point between the lower end of the inner pole and the upper end of the heating rod to the lower end of the fixed portion C; and L4 is a distance from the above middle point to the upper end of the fixed portion D.
Inventors:
Teramura Hideki
Yuzen Kizen
Yuzen Kizen
Application Number:
JP2000391671A
Publication Date:
October 22, 2008
Filing Date:
December 22, 2000
Export Citation:
Assignee:
Nippon Special Ceramics Co., Ltd.
International Classes:
F23Q7/00
Domestic Patent References:
| JP11002406A | ||||
| JP2000130752A | ||||
| JP9303773A |
Attorney, Agent or Firm:
Kiyoshi Kojima