柴油机高原功率恢复供油参数调节方法

doi:10.3969/j.issn.1000-1093.2014.05.002

摘要/Abstract

摘要： 针对高原环境下增压柴油机功率下降的问题，通过仿真研究，对比了3种不同的供油参数调节方案，得出了在高原环境下通过调节供油参数恢复柴油机功率的方法。建立了某V型6缸增压柴油机仿真模型，并采用试验数据对模型各系统进行了校核。在该模型基础上，研究了增压柴油机的平原性能，匹配了适应高原环境的增压器，研究了喷油提前角与功率、涡轮入口温度和缸内最高燃烧压力之间的关系。据此，提出了供油参数的调节方法和具体参数，仿真计算了3种不同的供油参数调整方案，并对结果进行了对比分析。研究结果表明，在海拔4 500 m条件下，采用提前角和供油量联合调整的方法可将发动机标定功率恢复至平原的75%.

关键词: 动力机械工程, 增压柴油机, 高原功率恢复, 喷油正时, 增压匹配

Abstract: In order to enhance the performance of turbocharged diesel engine at a high altitude, three different schemes are compared by virtue of simulation. The effectiveness of the method to enhance the power of engine at a high altitude is verified by adjusting the fuel supply parameters without modifying the engine structures or adding any accessories. A model for a V6 turbocharged engine equipped with a new compressor is established for the highland simulation. And then the model is certified by experimental data. The influence of fuel injection advance angle on the power, the turbine intake temperature and the maximum combustion pressure is investigated. Based on the research results, the detailed methods to adjust the fuel supply parameters are put forward. Three different simulating schemes are calculated and compared through simulation. The result shows that the rated power of engine at the altitude of 4 500 m can reach up to 75% of its counterpart by using this method to adjust the injecting timing and fuel injection.

Key words: power machinery engineering, turbocharged diesel engine, power recovery at plateau, fuel injection timing, turbocharger matching

中图分类号:

TK421.8

朱振夏, 张付军, 韩恺, 刘杨杨, 罗国良, 李云龙, 柴智刚. 柴油机高原功率恢复供油参数调节方法[J]. 兵工学报, 2014, 35(5): 583-589.

ZHU Zhen-xia, ZHANG Fu-jun, HAN Kai, LIU Yang-yang, LUO Guo-liang, LI Yun-long, CHAI Zhi-gang. Adaption of Fuel Injection Parameters for Turbocharged Diesel Engines Working at High Altitude[J]. Acta Armamentarii, 2014, 35(5): 583-589.

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