PRESSURE SENSOR-TYPE GLOW PLUG

Provided is a pressure-sensor-integrated glow plug which can increase reliability of a bonding portion between a ceramic heater and a metal-made outer sleeve while being manufactured with relatively simple manufacturing steps and, at the same time, can maintain airtightness over a long period, and a...

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Bibliographische Detailangaben
Hauptverfasser: CHO Kan, TOYOSHIMA Yasuo
Format: Patent
Sprache:eng ; fre ; ger
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Beschreibung
Zusammenfassung:Provided is a pressure-sensor-integrated glow plug which can increase reliability of a bonding portion between a ceramic heater and a metal-made outer sleeve while being manufactured with relatively simple manufacturing steps and, at the same time, can maintain airtightness over a long period, and a method of manufacturing such a pressure-sensor-integrated glow plug. In a pressure-sensor-integrated glow plug where a pressure sensor receives a pressure in a combustion chamber in response to a displacement of the ceramic heater element, the ceramic heater element includes: a ceramic heater; a metal-made outer sleeve holding the ceramic heater on one end side thereof and having the other end side thereof inserted into and fixed to an inner hole of the housing; and a conductor portion electrically connected to one electrode of the ceramic heater and led out to the other end side of the metal-made outer sleeve, and the metal-made outer sleeve is sealed with respect to the combustion chamber, and the seal is provided on a more rear end side than at least the metal-made flexible member in an axial direction of the ceramic heater element.