刘晶晶1,2，陈秀梅1,2，周萌1,2，李光辉1,2
1.内燃机可靠性国家重点实验室，山东 潍坊 261061;2.潍柴动力股份有限公司，山东 潍坊 261061
摘要：基于降低成本和轻量化需求，对某高强化船用柴油机冷却系统进行优化设计，取消低温回路水泵，高、低温冷却回路共用同一水泵。对优化后冷却系统的流量分布、温度分布、压力分布和整机热平衡等进行试验验证。结果表明，冷却系统各部件的进出水温差和压降分布合理，整机热平衡热量分布满足性能要求，减少了系统附件，降低了制造成本和整机质量。
关键词：热负荷；高强化柴油机；冷却系统；试验研究
Abstract:Based on the requirements of cost reduction and lightweight, the cooling system of a highlystrengthened marine diesel engine is optimized.The low temperature loop water pump is cancelled, alternatively, the high and low temperature cooling circuit shared the same water pump. The flow distribution, temperature distribution, pressure distribution and heat balance of the whole machine are tested and verified. The results show that the distribution of water temperature difference and pressure drop of each component is acceptable, the heat balance meets the performance requirements of the whole machine, when the accessories are reduced. Then the manufacture cost and the quality of the whole machine are reduced.
Keywords:thermal load；highlystrengthened diesel engine；cooling system；experimental study
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