HIGH VOLTAGE CONNECTION SEALING METHOD FOR CORONA IGNITION COIL

摘要

A corona igniter assembly 20 comprises an ignition coil assembly 22, a firing end assembly 24, and a metal tube 26 connecting the ignition coil assembly 22 to the firing end assembly 24. A rubber boot 28 is disposed in the metal tube 26 and compressed symmetrically between a coil output member 30 of the ignition coil assembly 22 and an insulator 42 of the firing end assembly 24. Thus, the rubber boot 28 fills any air gaps and provides a hermetic seal between the ignition coil assembly 22 and the firing end assembly 24 to prevent unwanted corona discharge from forming from those air gaps.

主权项

1. A corona igniter assembly, comprising:
an ignition coil assembly for receiving a radio frequency voltage, a firing end assembly for receiving energy from said ignition coil assembly and distributing a radio frequency electric field, said firing end assembly including a corona igniter; a metal tube including a first tube end attached to said ignition coil assembly and a second tube end attached to said firing end assembly; said metal tube including an outer surface and an oppositely facing inner surface surrounding at least a portion of said ignition coil assembly and at least a portion of said firing end assembly; said inner surface of said metal tube presenting a tube volume between said first tube end and said second tube end, said tube volume including space not occupied by said ignition coil assembly and said firing end assembly; said metal tube including at least one hole extending through said inner surface and said outer surface for allowing air to exit said tube volume; and a rubber boot filling said tube volume and providing a hermetic seal between said ignition coil assembly and said firing end assembly.