Platinum spark plug electrodes in the flashover is the use of laser welding parts on a small platinum tablets (Iridium gold). Platinum and iridium and the melting point of reaching the 1774 and 2453 , and because it only 1.1 mm diameter and ��0.6 mm even ��0.4 mm, in the space under the same pressure and flashover its breakdown voltage than needed ordinary spark plugs, will be reduced by 10% ~ 20%, platinum (Iridium) to facilitate the spark plug ignition, the acceleration performance, and more fuel economy, longer life (general sparkplug 1 ~ 20,000 km, platinum and iridium spark Sedar 8 ~ 100,000 km), and other advantages, the market has gradually become a luxury vehicles. Spark Plug domestic enterprises, Zhuzhou Xianghuoju Spark Plug Co. Ltd. in 1996 introduced the first platinum spark plugs, and in 2002 introduced a more durable the Iridium Spark Plug, favored by the market. The company platinum (the Iridium) famous domestic supply spark plugs have the engine manufacturers, such as Shanghai Automobile, Shenyang Mitsubishi, Anhui Chery, Mianyang Xinchen, an annual output of up to 2 million. Currently capable of producing platinum, iridium spark plugs, the only world-renowned foreign manufacturers in Japan NGK, Denso, Bosch of Germany, the United States, such as the champion and Outelai.

Application of the domestic situation

Faced with a growing number of high-power large displacement of the birth of luxury cars, the engine more compact structure, thermal load is also growing, on the one hand require spark plugs to the small form factor of development, such as Rhythm of Dongfeng Nissan the sparkplug on the vehicle used M12 26.5 small and long thread design, the world's most exquisite pocket most of the spark plug thread only 1 / 4 ", it was born in Zhuzhou Xianghuoju Spark Plug Company.