Cooled railplug

Details Cooled railplug Cooled railplug

1994-08-22

1996-05-07

Nelli, Raymond A.

Internal-combustion engines

Igniters

F02P 2300

Patent

active

055136052

ABSTRACT:
The railplug is a plasma ignitor capable of injecting a high energy plasma jet into a combustion chamber of an internal combustion engine or continuous combustion system. An improved railplug is provided which has dual coaxial chambers (either internal or external to the center electrode) that provide for forced convective cooling of the electrodes using the normal pressure changes occurring in an internal combustion engine. This convective cooling reduces the temperature of the hot spot associated with the plasma initiation point, particularly in coaxial railplug configurations, and extends the useful life of the railplug. The convective cooling technique may also be employed in a railplug having parallel dual rails using dual, coaxial chambers.

REFERENCES:
patent: 5076223 (1991-12-01), Harden et al.
patent: 5211142 (1993-05-01), Matthews et al.
patent: 5272415 (1993-12-01), Griswold et al.
patent: 5371436 (1994-12-01), Griswold et al.
patent: 5377633 (1995-01-01), Wakeman

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