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EP-0748012-A1-19961211
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EP-0748012-A1-19961211
A spark plug for an internal combustion engine, wherein a cylindrical metal shell has first and second open ends, an annular ground electrode integral with the metal shell is provided on the first open end of the metal shell, an insulator has an axial bore in which a center electrode is coaxially placed whose front end slightly extended beyond the insulator, and intermediary electrode strips are arranged circumferentially around a front portion of the insulator so as to circumferentially form a series of spark discharge gaps between the ground electrode and the center electrode. The spark plugs can ignite an air-fuel gas mixture omnidirectionally since it does not need a L-shaped ground electrode which hinders ignition of the gas mixture. [image]
A spark plug for an internal combustion engine, wherein a cylindrical metal shell has first and second open ends, an annular ground electrode integral with the metal shell is provided on the first open end of the metal shell, an insulator has an axial bore in which a center electrode is coaxially placed whose front end slightly extended beyond the insulator, and intermediary electrode strips are arranged circumferentially around a front portion of the insulator so as to circumferentially form a series of spark discharge gaps between the ground electrode and the center electrode. The spark plugs can ignite an air-fuel gas mixture omnidirectionally since it does not need a L-shaped ground electrode which hinders ignition of the gas mixture. [image]
en
European Patent Office
EP0748012
EP 0748012
H01T 13/46
A spark plug for an internal combustion engine and a method of making the same
A spark plug for an internal combustion engine and a method of making the same - European Patent Office - EP 0748012 A1
A spark plug for an internal combustion engine and a method of making the same - European Patent Office - EP 0748012 A1
EUROPEAN PATENT APPLICATION
Adobe PDF Library 8.0
"EP0748012"; "EP 0748012"; "H01T 13/46"; "A spark plug for an internal combustion engine and a method of making the same"
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EP
0748012
A1
1996-12-11
96304316.1
1996-06-07
JP
166849/95
1995-06-08
JP
142478/96
1996-06-05
H01T 13/46 A
NGK SPARK PLUG CO., LTD
Suzuki, Takahiro,
c/o NGK Spark Plug Co. Ltd.
Nicholls, Michael John
A spark plug for an internal combustion engine and a method of making the same
Zündkerze für Verbrennungsmotor und sein Herstellungsverfahren
A spark plug for an internal combustion engine and a method of making the same
Bougie d'allumage pour moteur à combustion interne et sa méthode de fabrication
A spark plug for an internal combustion engine, wherein a cylindrical metal shell has first and second open ends, an annular ground electrode integral with the metal shell is provided on the first open end of the metal shell, an insulator has an axial bore in which a center electrode is coaxially placed whose front end slightly extended beyond the insulator, and intermediary electrode strips are arranged circumferentially around a front portion of the insulator so as to circumferentially form a series of spark discharge gaps between the ground electrode and the center electrode. The spark plugs can ignite an air-fuel gas mixture omnidirectionally since it does not need a L-shaped ground electrode which hinders ignition of the gas mixture. [image]
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