
第33卷(2011)第5期性能与排放
柴油机 Diesel Engine
喷油过程参数对极端环境条件下柴油机性能影响的仿真分析
李蓝媚,王磊
(1.成都经济技术开发区汽车产业投资服务局,四川成都610100;
2.中国人民解放军77105部队修理连,四川泸州646102)
Vol. 33(2011) No. 5
摘要:采用一维仿真分析软件GT-SUITE对台直喷式荣油机进行了整机模拟计算,分析了在极端环境温度和极端环境压力条件下该柴油机的经济性、动力性和排放性能参数的变化情况。根据分析结果对柴油机在极端环境工况条件下运行时的喷油过程参数做优化调整。仿真结果表明,在极端高温条件下,通过调整喷油过程参数可使荣油机动力性、经济性能参数与常态温度条件下十分接近,排放性能参数在一定程度上获得改善;在极低环境压力条件下,适当地增大喷油提前
角,降低喷油量,可使标定工况下荣油机经济和排放性能得到不同程度的改善。关键词:柴油机;喷油过程;性能;极端环境
中图分类号:TK421*.2
文献标识码:A
文章编号:10014357(2011)05002304
Simulation Analysis of InjectionProcedure Parameters on DieselEngine
Performances under Extreme Environment
Li Lanmei', Wang Lei?
(1. Automotive Industry Investment & Service Bureau of Chengdu Economic &
Technological Development Zone, SichuanChengdu610100;
2.Repair Company of 77105 PLA Troops, SichuanLuzhou646102)
Abstract: One direct-injection diesel engine was simulated by one-dimensional software GT-SUITE. Its fu-el economy, dynamic performance and emission parameters under extreme temperature or pressure environ ment were analyzed. According to the analysis results, the injection procedure parameters of diesel engine under extreme environment were optimized. Simulation results show that by adjusting injection parameters, the dynamical performance and fuel economy remains nearly the same under extreme high temperature con-dition as under common temperature environment, and emission parameters are improved to some degree Under extreme low pressure condition, fuel economy and emission behavior of the diesel engine can be im-
proved more or less by appropriately advancing injection angle and decreasing injection quantity. Keywords: diesel engine; injection procedure; performance; extreme environment
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引言
随着石油资源的日渐减少和排放法规的日趋严格,节能减排已成为全球范围的共识。探讨如何降低柴油机油耗和减少废气排放中的有害成分成为了
当前内燃机工作者的主要研究方向。在极端环境条件下,柴油机的进气过程受到环境气温和大气压力的影响,与常温常压的运转情况相比,其性能会出现极大的差异。高气温或低气压条件下,环境空气密度下降,导致柴油机充气量下降,如果不调整
收稿日期:2011-04-20
作者简介:李海烯(1984-),女,工.学颈士,主要研充方向为柴油机性能优化,E-mail:137734811@q9com。