Three-dimensional simulation of the in-cylinder flow field of fully variable valve diesel engines

被引：0

作者：

Lu Y. ^{[1
]}

Pan Z. ^{[1
]}

Li J. ^{[1
]}

Li B. ^{[1
]}

Wang Z. ^{[1
]}

机构：

[1] College of Power and Engineering University, Harbin Engineering University, Harbin

来源：

Harbin Gongcheng Daxue Xuebao/Journal of Harbin Engineering University | 2020年 / 41卷 / 04期

关键词：

Diesel engine; Fully variable valve; In-cylinder flow field; Meshing; Squishing flow; Swirl ratio; Three-dimensional simulation; Turbulent energy; Valve lift;

D O I：

10.11990/jheu.201901099

中图分类号：

学科分类号：

摘要：

To improve diesel engine power, increase economy, and reduce emissions, this thesis used fully variable valve technology to achieve flexible valve parameter adjustment. Such technology overcomes the limitation of traditional diesel cam profiles. On the basis of the cylindrical structure and the intake and exhaust systems of medium- and high-speed diesel engines, SolidWorks software was used to establish an accurate diesel port-valve-cylinder model, thus deriving a high-quality, fast, dynamic layer grid via ICEM CFD. Through the fluid calculation software FLUENT, the intake valve's opening phase, closing phase, and maximum lift were changed to conduct a CFD simulation study of its in-cylinder flow performance under variable valve parameters. Simulation results revealed the development and variation of the in-cylinder flow field under different parameters, thereby providing a theoretical basis for the optimization and control of the fully variable valve parameters of medium- and high-speed diesel engines. Copyright ©2020 Journal of Harbin Engineering University.

引用

页码：541 / 548

页数：7

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