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柴油发动机水箱的主要作用是收集和补充冷却液,其工作过程是:冷凝箱通过连通管与散热器盖和散热器相通,随着冷却液温度的升高,压力增大,当压力达到散热器盖上蒸气阀开启压力时,蒸气阀打开,一部分过量的冷却液将流到冷凝箱;当冷却液温度下降时体积收缩,散热器内部压力下降,当负压达到一定值时,散热器盖内的空气阀(真空阀)打开,冷凝箱的冷却液回流到散热器内


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