【摘要】 四冲程摩托车用曲轴箱通风系统应当改进 ,利用进气管真空度强制吸气和改进化油器喉管方案证明 ,这些改进 ,可以减少污染 ,节省燃油 ,延长机件寿命。更多还原

【Abstract】 The set of ventilation to the crankcase of motorcycle ought to be ameliorated. Using the vacuum of admission line to breath the air into the crankcase and improving the larynx of carburetor can reduce the pollution, economize fuel, and extend the life of the motorcycle engine works.更多还原