Sparkplug for an internal combustion engine

The invention relates to a sparkplug (10) comprising an induction coil (28) and an electrode (24). Said induction coil (28) has two end portions (30, 32) (34), said electrode (24) extending in the continuation of one of said two end portions (32). Said induction coil (28) has a conducting wire (36)...

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Bibliographic Details
Main Authors AGNERAY ANDRE, JAFFREZIC XAVIER, PARIENTE MARC
Format Patent
LanguageChinese
English
Published 10.07.2013
Subjects
BASIC ELECTRIC ELEMENTS
CORONA DEVICES
ELECTRICITY
GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
OVERVOLTAGE ARRESTERS USING SPARK GAPS
SPARK GAPS
SPARKING PLUGS
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Summary:The invention relates to a sparkplug (10) comprising an induction coil (28) and an electrode (24). Said induction coil (28) has two end portions (30, 32) (34), said electrode (24) extending in the continuation of one of said two end portions (32). Said induction coil (28) has a conducting wire (36) wound to form a succession of turns (44, 45, 58, 60), said one of said two end portions (32) having a terminal turn (58) connected to said electrode (24). According to the invention, said one of said two end portions (32) comprises a plurality of coaxial end turns (45) which extend between said terminal turn (58) and an upstream turn (60), and said terminal turn (58) has a diameter D58 smaller than the diameter D60 of said upstream turn (60), so as to be able to reduce the strength of the electric field induced in said one of said two end portions (32) near said terminal turn (58).
Bibliography:Application Number: CN201180053725