题目

英语翻译
During a cold start ,the air-fuel mixture drawn in by engine leans off.This due to the low turbulence at cranking speeds causing poor mixture of the fuel particles with the air ,and to the minimal evaporation of the fuel and wetting of the cylindet walls and intake ports with fuel at low temperatures.In order to compensate for these phenomena,and thus facilitate starting of the cold engine,additional fuel must be injectd during cranking.

提问时间：2021-02-25

答案

由于发动机在过冷状态下的启动,由发动机导入的混合空气燃料泄漏.泄漏的原因有三,分别以启动速度是低波动而造成的燃料颗粒与空气的不良混合,以及燃料的极小蒸发量、圆柱形侧壁的湿润、进气口与燃料的低温状态.为了弥...