NGK PLUG STUDIO

-
Product Information
Technical Information
Race Information
Global Network
Top
 

Technical Information

Iridium Spark Plug

FEATURES OF IRIDIUM PLUGS

photo
-

Lasting high performance

"Thermo edge" doesn't allow ignition performance to become dulled.
The "thermo edge", on which minute discharges are generated, is a feature created at the top of the insulator. It burns off, with minute electrical discharges, the carbon that is deposited on the insulator as the result of a rich fuel-air mixture or a long period of low-speed driving, maintaining a constantly high ignition performance for the plug.
photo   · Iridium Plug
Carbon accumulates over the whole of the firing end but the resistance of the insulator is infinite and there is no deterioration in firing performance.
photo   · Nickel type plug
Since there is hardly any "thermo edge" portion at the inner wall of the insulator, it is difficult for minute discharges and other phenomena to occur and carbon cannot be burned off easily.
photo


Copyright(c) 2006 NGK SPARK PLUG CO.,LTD. all rights reserved.