Internal combustion engine, has cylinder bore including diameter, where ratio from distance that is resulted between exhaust valve axle and free end section of electrode to bore diameter is provided within certain range

摘要

The engine has a sparking plug (7) arranged in a combustion chamber (4) such that an electrode (12) of the plug lies outside a fuel hollow taper. The plug is positioned such that a distance results between an exhaust valve axle and a free end section of the electrode. A cylinder bore (2a) has a diameter, where a ratio from the distance to the bore diameter is provided within a range from 0.02 to 0.13, in particularly from 0.04 to 0.1.