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

Abstract

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

CLC Number:

TK412

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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