冬季气温在-25℃以下时,汽车、拖拉机起动是非常困难的,虽然稠化机油解决了因机油粘度大发动机达不到起动转速的问题,但由于气温低燃油雾化不良,难以点燃,特别是柴油机着火就更加困难。目前,许多发动机冷却系都在使用防冻液,这样,传统的用热水预温起动方法就不便采用了。有的发动机装有电预热装置,但耗电多且易损 Winter temperatures below -25 ℃, the car, the tractor is very difficult to start, although the viscosity of the engine oil viscosity to solve the problem of the engine can not reach the starting speed, but due to low temperature fuel atomization poor, difficult to ignite, in particular Diesel is more difficult to catch fire. At present, antifreeze is used in many engine cooling systems, so conventional warm-up methods with hot water are inconvenient. Some engines equipped with electric preheating device, but more power and vulnerable