对置活塞发动机缸内流动的模型分析与仿真验证

系统仿真学报 ›› 2016, Vol. 28 ›› Issue (7): 1567-1574.

对置活塞发动机缸内流动的模型分析与仿真验证

马富康^1,2, 赵长禄¹, 赵振峰¹, 王豪¹, 于霞³, 曹艳³, 张吉庆⁴

1.北京理工大学机械与车辆学院,北京 100081;
2.中北大学机械与动力工程学院,太原 030051;
3.山西柴油机工业有限责任公司,大同 037036;
4.中国国际工程咨询公司,北京 100042

收稿日期:2015-01-30 修回日期:2015-04-08 出版日期:2016-07-08 发布日期:2020-06-04
作者简介:马富康(1979-),男,山西,博士,讲师,研究方向为内燃机工作过程建模与仿真;赵长禄(1963-),男,辽宁,博士,教授,研究方向为动力系统仿真及控制。
基金资助:
国家部委科研基金(B2220110005)

In-cylinder Flow Analysis and Verification of Opposed-piston Two-stroke Engine

Ma Fukang^1,2, Zhao Changlu¹, Zhao Zhenfeng¹, Wang Hao¹, Yu Xia³, Cao Yan³, Zhang Jiqing⁴

1. School of Mechanical Engineering, Beijing Institute of Technology, Beijing 100081, China;
2. School of Mechanical and Power Engineering, North University of China, Taiyuan 030051, China;
3. Shanxi Diesel Engine Industry co. , LTD, Datong 037036, China;
4. China International Engineering Consulting Corporation, Beijing 100042, China

Received:2015-01-30 Revised:2015-04-08 Online:2016-07-08 Published:2020-06-04

摘要/Abstract

摘要： 为分析对置活塞二冲程发动机缸内流动的组织方法与影响规律,分别设计均匀和非均匀进气腔以及平顶和凹坑活塞进行缸内流动计算。通过建立缸内流动的零维模型,对缸内流动的组织和影响规律进行定性分析。同时,通过三维计算流体动力学仿真验证了零维模型的分析结论。研究表明,均匀进气可组织较强的缸内涡流,非均匀进气配合活塞顶面的凹坑导流结构,可实现缸内流动的合理组织和平均湍动能变化,相比平顶活塞缸内湍动能提高了1.5倍。

关键词: 对置活塞二冲程, 流动, 零维模型, 仿真

Abstract: The effects of flat piston uniform scavenging chamber, flat piston non-uniform scavenging chamber and pit piston non-uniform scavenging chamber on the in-cylinder flow were analyzed. Uniflow scavenging zero-dimensional model was used to qualitative analysis in-cylinder flow organizational process and influence rule for opposed-piston two-stroke engine. Results show that uniform scavenging chamber can organize swirl and increase scavenging efficiency and non-uniform scavenging chamber can organize tumble and increase turbulent kinetic energy. Scheme 3 is favorable to organize tumble and maintain the in-cylinder turbulence intensity, which is increased by 150 percent.

Key words: opposed-piston two-stroke, flow, zero-dimensional model, simulation

中图分类号:

TK412

马富康, 赵长禄, 赵振峰, 王豪, 于霞, 曹艳, 张吉庆. 对置活塞发动机缸内流动的模型分析与仿真验证[J]. 系统仿真学报, 2016, 28(7): 1567-1574.

Ma Fukang, Zhao Changlu, Zhao Zhenfeng, Wang Hao, Yu Xia, Cao Yan, Zhang Jiqing. In-cylinder Flow Analysis and Verification of Opposed-piston Two-stroke Engine[J]. Journal of System Simulation, 2016, 28(7): 1567-1574.

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