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东风康明斯6BTAA5.9-C1 80型柴油机的低温启动温度在-10℃左右,但在我国北方地区,冬季平均气温为-10～-20℃,这样的严寒条件给柴油机的启动造成很大困难,是亟待解决的问题。1.低温启动困难的原因柴油机通过把柴油喷入汽缸,使雾状柴油与汽缸中的被压缩空气混合形成高温、高压可燃混合气,并自行燃烧。当环境温度低时,会导致柴油机燃烧室的温度降低;在低温条件下,柴油机运转部位之间配合间隙发生了变化,从而使启动阻力矩变大;严寒使柴油黏度增大,流动性变差,甚至结腊;温度下降会使蓄电池活性减低,电容量减小,启动力矩也随之减少,进而导致启
Dongfeng Cummins 6BTAA5.9-C180 diesel engine starting temperature at low temperature around -10 ℃, but in northern China, the winter average temperature of -10 ~ -20 ℃, such a cold condition to start the diesel engine caused great difficulties, Is a problem to be solved. 1. Low-temperature start-up difficulties Diesel engine by injecting diesel into the cylinder, the mist of diesel and compressed air in the cylinder to form a mixture of high-temperature, high-pressure combustible and self-combustion. When the ambient temperature is low, the temperature of the combustion chamber of the diesel engine will decrease. In low temperature conditions, the clearance between the diesel engine operating parts changes, so that the starting resistance torque becomes larger. The cold increases the viscosity of the diesel oil and deteriorates the fluidity , Or even waxing; temperature drop will reduce the battery activity, reduce the capacity, starting torque also will be reduced, resulting in Kai