某6V150柴油机变海拔热平衡试验研究  

Heat Balance Experiment at Different Altitudes for a 6V150 Diesel Engine

作　　者：于宝金[1] 王增全[1] 丁技峰[1] 张国征[1] 龚永星 张效天 

机构地区：[1]中国北方发动机研究所(天津),天津300400 [2]驻张家口地区军事代表室,河北张家口075041

出　　处：《车用发动机》2014年第5期72-74,82,共4页Vehicle Engine

摘　　要：针对6V150增压中冷电控柴油机高原试验存在的问题,在其常规油量控制特性和增压匹配特性下,进行了不同海拔下模拟高原环境的热平衡试验,研究了整机热量分布随海拔变化的规律。试验结果表明:在低转速和高转速工况,随着海拔的升高,该柴油机的总发热量、转化为有效功的热量以及排气散热量先保持不变或略微减小,当海拔高度大于3 000m后开始大幅度下降,而在中间转速工况,基本不随海拔的变化而变化。冷却水散热量在柴油机各转速下随着海拔的升高先逐渐增大,当海拔大于3 000m后,开始出现略微下降的趋势。在3 000m海拔时,与平原相比,最大冷却水散热量增大19%,但在4 500m海拔时,由于功率下降明显,最大冷却水散热量增大15%。For the existing problems of the 6V150 turbocharged inter-cooling electronic control diesel engine in plateau test, the heat balance experiments at different altitudes were conducted based on the matching property between the fuel quantity control and turbocharging. The test results show that the total heat, the consumed heat by working and the exhaust heat release first keep the stable or slightly decrease with the increase of altitude and drop sharply beyond the altitude of 3 000 m in low and high speed and have little change with the altitude in medium speed. The heat release of coolant increases with the increase of altitude in each speed of diesel engine and begins to show a slight decrease trend beyond the altitude of 3 000 m. Compared with the plain region, the maximum heat release of coolant increased by 19% at 3 500 m altitude and by 15% due to the obvious power decrease at 4 500 m altitude.

关 键 词：柴油机 增压中冷 高原试验 热平衡 

分 类 号：TK421.26[动力工程及工程热物理—动力机械及工程]