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Development of Spark Plug for Side Exhaust Port Rotary Engine
Published October 27, 2004 by Society of Automotive Engineers of Japan in Japan
Event: JSAE Autumn Conference
The spark plug for the rotary engine is subject to the higher thermal load environment because of its structure compared to the ordinary reciprocating engine's plug. Effort has been made to develop the rotary engine's spark plug under such condition as a key technology to secure its high heat resistance and to improve the ignitability at the same time. The need to take actions toward environmental pollutants is required recently, such as improving fuel consumption and reducing exhaust emissions. And the demand for sophisticated product has been increased. A spark plug was newly developed for the side exhaust port rotary engine to realize the low fuel consumption and high power and introduced to the market.
The newly developed spark plug modified the center electrode, the ground electrode, and insulator to realize both drastically improvement of the ignitability and high heat resistance.
This paper describes overview of the development of the new spark plug.