姜峰,李明海,王娟.两种米勒循环对机车柴油机性能的计算分析与研究[J].内燃机工程,2017,38(6):119-124.
两种米勒循环对机车柴油机性能的计算分析与研究
Computation and Study of Effects of Two Kinds of Miller Cycle on Performances of Locomotive Diesel Engine
DOI：
关键词:NOx  动力性  机车柴油机  米勒循环
Key Words:NOx  power performance  locomotive diesel engine  Miller cycle
基金项目:广西自然科学基金项目（2013GXNSFAA019317）;广西高校科学技术研究项目（KY2015YB168）;广西重点实验室开放基金项目（2014KFMS02）
作者单位
姜峰,李明海,王娟 1.大连交通大学 交通运输工程学院,大连 116028
2.广西科技大学 汽车与交通学院,柳州 545006 
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摘要:用GT-Power软件建立某机车柴油机仿真计算模型,通过试验验证了仿真模型的准确性。对采用两种米勒循环时该柴油机在1000 r/min不同负荷条件下的功率、油耗和排放影响建立了仿真方案,在全负荷条件下进行了两种米勒循环对比。结果表明,两种方式米勒循环都能显著降低NOx 排放;综合分析柴油机各性能结果,选取变凸轮型线米勒循环、米勒度为30°曲轴转角为提高该机车柴油机性能的优化方案。该方法对机车柴油机应用米勒循环具有一定指导意义。
Abstract:GT-Power software was used to establish the simulation model of a locomotive diesel engine, and the simulation model was verified by tests. Simulation cases were developed to study the influences of two kinds of Miller cycle on engine power, fuel consumption and emissions at 1 000 r/min with different loads, and the effects of these two kinds of Miller cycle were compared at full load. The study shows that both kinds of Miller cycle can decrease NOx emissions. In terms of engine performances, the Miller cycle with modified intake cam profile and with intake valve lift profile moved by 30 degrees of crank angle is selected as an optimization plan for the locomotive diesel engine. This proposal can give guidelines to further researches on the application of Miller cycle to locomotive diesel engines.
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