SPARK PLUG FOR INTERNAL COMBUSTION ENGINE

A spark plug 1 includes a housing 2, an insulator 3, a center electrode 4 held inside the insulator 3 such that a distal end portion 41 protrudes, a ground electrode 5 including a standing portion 51 and an opposing portion 52, and a guide member 22 that has a guide surface 221 facing the standing p...

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Bibliographische Detailangaben
Hauptverfasser:	SHIBATA MASAMICHI, NISHIO NORIAKI, INOHARA TAKAYUKI, AOCHI TAKANOBU, OKABE SHINICHI
Format:	Patent
Sprache:	eng
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 LIGHTING MECHANICAL ENGINEERING OVERVOLTAGE ARRESTERS USING SPARK GAPS SPARK GAPS SPARKING PLUGS SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF WEAPONS
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Beschreibung
Zusammenfassung:	A spark plug 1 includes a housing 2, an insulator 3, a center electrode 4 held inside the insulator 3 such that a distal end portion 41 protrudes, a ground electrode 5 including a standing portion 51 and an opposing portion 52, and a guide member 22 that has a guide surface 221 facing the standing portion 51 of the ground electrode 5 and functions to guide a flow of an air-fuel mixture in a combustion chamber of an internal combustion engine to a spark discharge gap G formed between the center electrode 4 and the opposing portion 52 of the ground electrode 5. The opposing portion 52 of the ground electrode 5 has an opposing surface 521 that opposes the center electrode 4, a back surface 522 on the opposite axial side to the opposing surface 521, and a pair of side surfaces 523 and 524 that connect the opposing surface 521 and the back surface 522. Of the pair of side surfaces 523 and 524, at least the side surface 523 on the guide member 22 side is formed so as to make an obtuse angle with the opposing surface 521.