Plasma ignition system with recess porton in the center...

Details Plasma ignition system with recess porton in the center... Plasma ignition system with recess porton in the center...

2011-05-24

2011-05-24

Patel, Nimeshkumar D (Department: 2879)

Electric lamp and discharge devices

Spark plugs

Non-conducting material in or adjacent gap

C313S138000, C313S141000, C313S143000, C123S1690EB, C123S1690EL

Reexamination Certificate

active

07948158

ABSTRACT:
A plasma ignition system includes an ignition plug attached to an engine and a high-voltage supply. The plug includes a center electrode serving as a positive pole, a ground electrode serving as a negative pole, and an insulating member insulating the center electrode from the ground electrode and defining a discharge space therein. At least a part of a surface of the center electrode faces the space, and at least a part of a surface of the ground electrode faces the discharge space. The plug puts gas in the space into a plasma state and injects the gas into the engine as a result of application of high voltage and supply of a large current to the plug by the high-voltage supply. The center electrode has a recess portion opposed to the space and recessed in a direction opposite to an injection direction.

REFERENCES:
patent: 3581141 (1971-05-01), Beaubier
patent: 2007/0114898 (2007-05-01), Nagasawa et al.
patent: 5635793 (1980-08-01), None
patent: 56-35793 (1981-04-01), None
patent: 57-29089 (1982-02-01), None
patent: 2006-294257 (2006-10-01), None
patent: 2006294257 (2006-10-01), None
patent: 2007-134127 (2007-05-01), None
Translation of JP 5635793.
Machine translation of JP 2006294257A.
Japanese Office Action dated Jun. 16, 2009, issued in corresponding Japanese Application No. 2007-185670, with English translation.

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