The invention includes a spark plug for a combustion engine including a center electrode having a tapered portion with a plurality of ridges formed thereon. The spark plug may also include a tapered, ground electrode positioned over the center of the center electrode. The tapered center and ground electrodes allow for flames to propagate freely from the spark gap into the combustion chamber and to ignite an air-fuel mixture in the chamber leading to smooth idle and faster starts.
申请公布号
US5821676(A)
申请公布日期
1998.10.13
申请号
US19960616788
申请日期
1996.03.15
申请人
GENERAL MOTORS CORPORATION
发明人
ATCHINSON, II, RAY WILLIAM;FREED, JR., DALE LAVERN;MC KEON, JR., JOHN FRANKLIN;VAN UUM, DONALD ROBERT;OAKLEY, CHARLES DALE;MANN, GAMDUR SINGH;PENNEY, KEITH ALLEN