进气道结构对混动发动机滚流和燃烧影响
作者:
作者单位:

1.同济大学 汽车学院,上海 201804;2.上汽大通汽车有限公司,上海 201805;3.上海汽车集团股份有限公司乘用车公司,上海 201805;4.移动源后处理技术(河南)研究院有限公司,河南 许昌 461000

作者简介:

楼狄明(1963―),男,教授,博士生导师,主要研究方向为混合动力内燃机关键技术。 E-mail: loudiming@tongji.edu.cn

通讯作者:

房亮(1988―),男,讲师,硕士生导师,工学博士,主要研究方向为混合动力内燃机关键技术。 E-mail:fangliang@tongji.edu.cn

中图分类号:

TK412+.2

基金项目:

国家重点研发计划(2018YFB0105802)


Effect of Inlet Structure on Tumble Intensity and Combustion Process of Hybrid Gasoline-direct-injection Engine
Author:
Affiliation:

1.School of Automobile Studies,Tongji University, Shanghai 201804,China;2.SAIC MAXUS Automotive Co. Ltd., Shanghai 201805,China;3.Shanghai Automobile Industry Corporation Motor Passenger Vehicle Company, Shanghai 201805,China;4.Mobile Source Emission Aftertreatment Institute Co. Ltd.(Henan), Xuchang 461000 ,China

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    摘要:

    以某1.5L混合动力增压直喷汽油机为研究对象,利用稳态气道试验台架和三维仿真工具,研究了不同结构进气道对缸内稳态、瞬态滚流强度和燃烧性能的影响。研究中设计了4款不同滚流比进气道,对不同方案进行了稳态气道芯盒吹风试验,并将试验结果与三维仿真分析结果进行对比;利用三维仿真软件计算了不同进气时刻缸内瞬态滚流比、瞬态湍动能、缸内速度场、空燃比分布和火焰前锋面位置等。研究结果表明:更高的滚流比将改善缸内油气混合,提高点火时刻缸内平均湍动能,影响火焰传播速度,从而影响到缸内燃烧,进而影响汽油机的性能。

    Abstract:

    Based on a 1.5L hybrid turbocharged direct injection gasoline engine. The effects of different inlet structures on in-cylinder steady and transient tumble intensity and combustion performance were studied by using steady-state inlet test bench and 3D simulation tools. 4 different kinds of inlet were designed in this research. They were compared on a steady-state airway testing system with the simulation results. The in-cylinder transient tumble ratio, transient turbulent kinetic energy (TKE), velocity distribution, air/fuel ratio and flame front of different inlet crank angle were calculated by simulation. The results showed that higher tumble ratio would improve the in-cylinder fuel air mixing and increase the average TKE at ignition phase, which affected the flame propagation velocity. Then it affected the in-cylinder combustion and performance of the GDI engine.

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楼狄明,潘雪伟,房亮,张小矛,施雅风,石健.进气道结构对混动发动机滚流和燃烧影响[J].同济大学学报(自然科学版),2022,50(2):264~272

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  • 收稿日期:2021-05-07
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  • 在线发布日期: 2022-03-16
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