相较于大行其道的四冲程发动机,近年来二冲程发动机日趋势微,最主要的原因是低转速时排气不充分、扫气不完全,以及参与燃烧的润滑油很难充分燃烧,导致废气中碳氢化合物含量剧增,远远高于四冲程摩托车。在环保呼声至上的形势下,这是致命的缺陷 ...
The KTM EXC was one of the off-road bikes that Austrian motorcycle manufacturer KTM Sportmotorcycle AG released for the 2005 model year. It can be considered a higher-level version of the SX, another ...