SPARK PLUG

A purpose is simultaneously achieving improvement in voltage resistance, suppression of oxidation of a center electrode, and suppression of side sparking. A spark plug includes an insulator having an axial hole that extends along an axis line, and a center electrode inserted within the axial hole. T...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
Hauptverfasser:	KUKI, Hiroaki, FUKUZAWA, Reimon
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BASIC ELECTRIC ELEMENTS BLASTING COMBUSTION ENGINES CORONA DEVICES ELECTRICITY GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS IGNITION, OTHER THAN COMPRESSION IGNITION, FORINTERNAL-COMBUSTION ENGINES LIGHTING MECHANICAL ENGINEERING OVERVOLTAGE ARRESTERS USING SPARK GAPS SPARK GAPS SPARKING PLUGS TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES WEAPONS
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	A purpose is simultaneously achieving improvement in voltage resistance, suppression of oxidation of a center electrode, and suppression of side sparking. A spark plug includes an insulator having an axial hole that extends along an axis line, and a center electrode inserted within the axial hole. The insulator includes: a first cylindrical portion; a truncated cone-shaped portion formed at a front end side of the first cylindrical portion and whose outer diameter reduces toward the front end side; and a second cylindrical portion formed at a front end side of the truncated cone-shaped portion. A diameter C of the center electrode is not larger than 2.2 mm. A total I of a volume of the truncated cone-shaped portion and a volume of the second cylindrical portion, a volume E of the center electrode from a positon at a rear end of the truncated cone-shaped portion to a position at a front end of the second cylindrical portion with respect to the direction along the axis line, and the diameter C satisfy I/E¥4.2333C 2 -19.79C+24.869.