计算机系统应用
計算機繫統應用
계산궤계통응용
APPLICATIONS OF THE COMPUTER SYSTEMS
2014年
7期
231-236
,共6页
无人机发动机%GT-Power软件%点火正时%仿真分析
無人機髮動機%GT-Power軟件%點火正時%倣真分析
무인궤발동궤%GT-Power연건%점화정시%방진분석
UAV Engine%GT-Power software%ignition timing%simulation analysis
利用GT-Power软件建立了某无人机二冲程发动机直喷仿真模型，通过实验获取缸压曲线与仿真结果进行对比，验证了仿真模型的正确性。基于验证的直喷系统仿真模型，分析了高低空环境下的点火正时对气缸最高压力、扭矩、燃油消耗率、排气温度和NOX排放量的影响规律。仿真结果可优化无人机直喷系统的点火正时参数，为在高低空环境下提高发动机性能提供理论依据。
利用GT-Power軟件建立瞭某無人機二遲程髮動機直噴倣真模型，通過實驗穫取缸壓麯線與倣真結果進行對比，驗證瞭倣真模型的正確性。基于驗證的直噴繫統倣真模型，分析瞭高低空環境下的點火正時對氣缸最高壓力、扭矩、燃油消耗率、排氣溫度和NOX排放量的影響規律。倣真結果可優化無人機直噴繫統的點火正時參數，為在高低空環境下提高髮動機性能提供理論依據。
이용GT-Power연건건립료모무인궤이충정발동궤직분방진모형，통과실험획취항압곡선여방진결과진행대비，험증료방진모형적정학성。기우험증적직분계통방진모형，분석료고저공배경하적점화정시대기항최고압력、뉴구、연유소모솔、배기온도화NOX배방량적영향규률。방진결과가우화무인궤직분계통적점화정시삼수，위재고저공배경하제고발동궤성능제공이론의거。
In this paper, the simulated model of an GDI system was created for UAV by GT-Power. This cylinder pressure curves obtained by experiment and simulation results were compared to verify the correctness of the simulation model. The impact of the outbreak of the cylinder pressure, torque, fuel consumption, exhaust gas temperature and NOX emissions with ignition timing was analyzed in high-low altitude based on proved GDI system simulation model. The results of simulation can optimize ignition timing parameters of GDI system for UAV, and provide theoretical guidance to improve engine performance in high-low altitude.
