Title:
GLOW PLUG
Document Type and Number:
Japanese Patent JP2015078784
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To improve the temperature rise characteristics of a glow plug which includes a heating element formed mainly of tungsten (W) or molybdenum (Mo).SOLUTION: The glow plug includes a cylindrical body formed cylindrical with its front end closed, a first heating element joined to the front end inside the cylindrical body, and adapted to be energized to generate heat, and a second heating element connected in series to the first heating element inside the cylindrical body, and adapted to be energized to generate heat. An electric resistance of a wire rod constituting the first heating element per unit length at 20°C is higher than an electric resistance of a wire rod constituting the second heating element per unit length at 20°C. The second heating element is formed mainly of tungsten (W) or molybdenum (Mo).
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Inventors:
YATSUYA YOSUKE
SAKURAI TOSHIYUKI
SEGAWA MASAYUKI
TANAKA TOMOO
SAKURAI TOSHIYUKI
SEGAWA MASAYUKI
TANAKA TOMOO
Application Number:
JP2013214845A
Publication Date:
April 23, 2015
Filing Date:
October 15, 2013
Export Citation:
Assignee:
NGK SPARK PLUG CO
International Classes:
F23Q7/00; H05B3/12; H05B3/18; H05B3/48
Attorney, Agent or Firm:
Meisei International Patent Office
Takakawa Ishikawa
Takakawa Ishikawa
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