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为防止大功率柴油机中的铝腐蚀和气缸套穴蚀,研制了一种改进型防蚀剂和一种新的长寿命冷却剂。防蚀剂由硼酸盐、亚硝酸盐、硅酸盐和有机缓蚀剂组成,具有极好的防穴蚀性能和防铝腐蚀性能。新的长寿命冷却剂含有磷酸盐、苯甲酸盐、无机和有机缓蚀剂(溶于1,2-亚乙基二醇中)。这种冷却剂可防蚀、防冻,其使用期(为5000h比商用长寿命冷却剂还要长。本文详述了新型防蚀剂和冷却剂的试验室试验和柴油机台架试验结果。
To prevent aluminum corrosion and cylinder liner cavitation in high-power diesel engines, an improved corrosion inhibitor and a new long-life coolant have been developed. Anti-corrosion by borate, nitrite, silicate and organic corrosion inhibitor, has excellent corrosion resistance and anti-aluminum corrosion. New long-life coolants contain phosphates, benzoates, inorganic and organic corrosion inhibitors (dissolved in ethylene glycol). This coolant is corrosion-resistant and antifreeze, and its useful life (5000h is longer than commercial long-life coolants.) This paper details the laboratory tests and diesel bench test results for new corrosion inhibitors and coolants.