增程式电动汽车用二冲程LPG直喷发动机混合气形成过程的数值解析

doi:10.16731/j.cnki.1671-3133.2018.07.012

现代制造工程 ›› 2018, Vol. 454 ›› Issue (7): 65-73.doi: 10.16731/j.cnki.1671-3133.2018.07.012

增程式电动汽车用二冲程LPG直喷发动机混合气形成过程的数值解析

刘迎春¹, 姜龙龙², 孙朝栋³, 许伯彦²

1 潍坊科技学院,潍坊 262700;
2 山东建筑大学机电工程学院,济南 250101;
3 聊城职业技术学院,聊城 252000

收稿日期:2017-04-12 出版日期:2018-07-20 发布日期:2018-07-20
通讯作者: 许伯彦,通信作者,工学博士,教授,主要研究方向为汽车发动机燃烧及排放控制。E-mail:1018349369@qq.com
作者简介:刘迎春,教授,主要研究方向为汽车发动机。
基金资助:
国家自然科学基金项目(51376113)

Numerical simulation of mixture formation and selection for two-stroke LPG direct injection engine for range-extended electric vehicle

Liu Yingchun¹, Jiang Longlong², Sun Chaodong³, Xu Boyan²

1 Weifang Institute of Technology,Weifang 262700,Shandong,China;
2 School of Mechanical and Electrical Engineering,Shandong Jianzhu University,Jinan 250101,China;
3 Liaocheng Vocational and Technical College,Liaocheng 252000,Shandong,China

Received:2017-04-12 Online:2018-07-20 Published:2018-07-20

摘要/Abstract

摘要： 利用LPG携带和存储方便、易于蒸发汽化的燃料特性,选定二冲程LPG直喷发动机作为轻型电动汽车在增程模式下发电机组的动力源。在验证计算方法的可行性后,使用Fire V2011软件,优化不同工况时燃料的喷射开始时刻,并进一步数值解析在选定的不同LPG喷射开始时刻、不同转角时的缸内混合气速度场和浓度场。结果表明:无论是启动、暖机工况(2 000 r/min),还是发电机组工况(4 800、6 000 r/min),在排气口关闭(73 ℃A ABDC)时,新鲜混合气被锁定在气缸内,并且在相应的火花塞点火时刻,缸内都会形成较理想的均质理论混合气。

关键词: 增程式电动汽车, 液化石油气, 二冲程直喷发动机, 均质混合气, 数值解析

Abstract: Liquefied Petroleum Gas(LPG),as a fuel,is easy to evaporate and also is convenient to be stored and carried.In this study,LPG is selected as the fuel of a two-stroke direct injection engine which is used as the power source of a light electric vehicle.The mixture formation process of the engine is numerically calculated using a CFD software Fire V2011.The injection timings at different running conditions are optimized at the first,then the evolution of the velocity and concentration fields during the process of mixture formation under typical conditions are analyzed.The results show that the fuel can be locked in cylinder at the timings of intake port closing(73 ℃A ABDC)and finally homogenous theoretical mixture can be formed at spark timings for all the calculated cases,including both warming condition(2 000 r/min) and electricity generation conditions(4 800 and 6 000 r/min).

Key words: extended range electric vehicle, liquefied petroleum gas, two stroke direct injection engine, homogeneous mixture, numerical analysis

中图分类号:

TK464

刘迎春, 姜龙龙, 孙朝栋, 许伯彦. 增程式电动汽车用二冲程LPG直喷发动机混合气形成过程的数值解析[J]. 现代制造工程, 2018, 454(7): 65-73.

Liu Yingchun, Jiang Longlong, Sun Chaodong, Xu Boyan. Numerical simulation of mixture formation and selection for two-stroke LPG direct injection engine for range-extended electric vehicle[J]. Modern Manufacturing Engineering, 2018, 454(7): 65-73.

参考文献

[1] 刘卓然,陈健,林凯,等.国内外电动汽车发展现状与趋势[J].电力建设,2015(7):25-32.
[2] 藤本博志,田代洋一郎,鈴木浩恭など.電気自動車技術(特集)[J].自動車技術,2016,70(1).
[3] MATTHE R,TURNER L,METTLACH H.VOLTEC Battery System for Electric Vehicle with Extended Range[J].Sae International Journal of Engines,2011,4(1):1944-1962.
[4] 杨晓红.2016款雪佛兰沃蓝达(Volt)增程式电动汽车将在明年一月的北美国际车展首发亮相[Z].第一电动网(www.d1ev.com),2014-08-08.
[5] 島村和樹,前田安正,清水貴弘,等.ハイブリッド車·電気自動車·燃料電池車(年鑑)[J].自動車技術,2015,69(8).
[6] 张寿荣.增程式电动汽车用LPG二冲程直喷发动机燃烧过程数值模拟[D].济南:山东建筑大学,2015.
[7] ROBERTO Gentili,STEFANIA Zanforlin, STEFANO Frigo, et al. Carlo Doveri Behaviour of a Small Two-Stroke Engine with Direct Liquid Injection and Stratified Charge[C].SAE,2004-32-0061.
[8] WINKLER F,OSWALD R,SCHÖGL O,et al.Application of Low Pressure Direct Injection and Semi-Direct Injection to a Small Capacity Two-Stroke Engine.Small Engine Technology Conference & Exposition[C].[S.l.]:[s.n.],2008.
[9] 蔡晓林.FAI二冲程缸内直喷汽油机的研究[D].天津:天津大学,2005.
[10] ORTMANN R,ARNDT S,RAIMANN J,et al.Methods and Analysis of Fuel Injection,Mixture Preparation and Charge Stratification in Different Direct Injected SI Engines.SAE 2001 World Congress[C].[S.l.]:[s.n.],2001.
[11] 吴韶建,陶元芳.增程式电动汽车的概念与设计方案[J].机械工程与自动化,2010,162(5):209-211.
[12] 许伯彦,齐运亮,耿德强,等.液态LPG燃料喷射过程的数值解析及可视化试验[J].内燃机学报,2009,27(2):146-152.
[13] AVL.List GMBH. Fire user manual[M].Graz:AVL.List GMBH,2011.
[14] 张现成,许伯彦.考虑针阀运动的LPG高压旋流喷油器内外流动过程的数值解析[J].内燃机学报,2013,31(3):228-234.
[15] WANG W B,PENG Y Y.Spray Measurement and Visualization of Gasoline Injection for 2-Stroke Engine[J].SAE paper,1993(不详).

增程式电动汽车用二冲程LPG直喷发动机混合气形成过程的数值解析

Numerical simulation of mixture formation and selection for two-stroke LPG direct injection engine for range-extended electric vehicle

PDF

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 3

编辑推荐

Metrics

[1]	牛继高，张兵，徐春华. 增程式电动汽车能量管理策略控制参数优化研究[J]. 现代制造工程, 2020, 474(3): 66-71.
[2]	柯彬彬, 贝绍轶, 汪伟, 汪永志, 张焱. 增程式电动汽车增程器的控制策略研究[J]. 现代制造工程, 2017, 439(4): 50-54.
[3]	刘青, 贝绍轶, 汪伟, 岳亮亮, 戴笠. 增程式电动汽车动力系统参数匹配仿真与分析[J]. 现代制造工程, 2017, 446(11): 76-80.