苏联大部分领土分布在寒带和温带。在北方冬季长达300天,有171天气温比全国平均气温值低50℃。众所周知,低温条件下内燃机的起动是一个严重的问题,没有良好的起动前预热实际上是不可能起动的。工程机械的低温起动问题尤为突出,因为这种机械经常离开基地 Most of the territory of the Soviet Union is located in the frigid and temperate regions. In the northern winter up to 300 days, 171 days lower than the national average temperature of 50 ℃. It is well-known that the starting of an internal combustion engine at low temperatures is a serious problem that it is virtually impossible to start without a good preheating before starting. Construction machinery cryogenic start-up problems are particularly prominent, because such machinery often leave the base