| 摘要 |
PROBLEM TO BE SOLVED: To provide a spark plug causing no pre-ignition even when alcohol fuel is used. SOLUTION: The spark plug used for an internal combustion engine that output power by combustion of alcohol fuel has a leg length of 12-14 mm and a volume of a gas volume part of 235.6-348.5 mm<SP POS="POST">3</SP>. COPYRIGHT: (C)2013,JPO&INPIT |
