8V165增压中冷柴油机降低热负荷性能改进研究

The Performance Improvement Study to Reduce Heat Loads on 8V165 Turbocharged and Intercooled Diesel Engine

以提高8V165增压中冷柴油机低速特性和降低热负荷为目的进行了研究。通过改进增压器并与柴油机合理匹配,增加了空气流量,改善了其低速性能;通过对原MPC排气系统所存在问题的分析,结合性能模拟计算,对MPC排气系统的主要结构尺寸进行了优化设计,有效地降低了柴油机的燃油消耗率和涡轮前排气温度,取得了较好的整机性能指标;为了进一步降低柴油机的热负荷,根据8V165增压中冷柴油机的特点,尝试进行了进排气连通技术的研究,在保证柴油机性能指标的基础上使涡轮前排气温度进一步下降,最终满足了柴油机的使用要求。

With the nondecreasing diesel engine's performance improving the heat loads of the diesel engine, by the research on work process simulation calculating, exhaust system optimizing and marching, turbocharged system optimizing and marching, intake and exhaust system connecting, the 8V165 diesel engine's heat loads has been improved and the whole diesel engine performance also improved.