CERAMIC GLOW PLUG

PROBLEM TO BE SOLVED: To provide a ceramic glow plug of excellent quick heating performance with a ceramic portion exposed from a metal outer cylinder and strong in flexural strength, and disturbing hardly a combustion gas flow. SOLUTION: A base ceramic 11 is formed with a tip diameter D2 in the vic...

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Hauptverfasser: MIZUNO TAKANORI, GOTO TARO
Format: Patent
Sprache:eng
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Zusammenfassung:PROBLEM TO BE SOLVED: To provide a ceramic glow plug of excellent quick heating performance with a ceramic portion exposed from a metal outer cylinder and strong in flexural strength, and disturbing hardly a combustion gas flow. SOLUTION: A base ceramic 11 is formed with a tip diameter D2 in the vicinity of a tip of the base ceramic 11 thinner than a base diameter D1 in the vicinity of the base ceramic 11 exposed from the metal outer cylinder 3, to be brought into two stages by providing a diameter difference in the diameters of the portion exposed from the metal outer cylinder 3 to a tip side in a ceramic heater element 4. COPYRIGHT: (C)2007,JPO&INPIT