Next Article in Journal
An Innovative Design of a Microtab Deployment Mechanism for Active Aerodynamic Load Control
Next Article in Special Issue
Credibility Theory-Based Available Transfer Capability Assessment
Previous Article in Journal
The Implications for Renewable Energy Innovation of Doubling the Share of Renewables in the Global Energy Mix between 2010 and 2030
Previous Article in Special Issue
Analysis and Design of a Permanent Magnet Bi-Stable Electro-Magnetic Clutch Unit for In-Wheel Electric Vehicle Drives
Article Menu

Export Article

Open AccessArticle
Energies 2015, 8(6), 5866-5884; doi:10.3390/en8065866

Effects of Scavenging System Configuration on In-Cylinder Air Flow Organization of an Opposed-Piston Two-Stroke Engine

1
School of Mechanical and Vehicle Engineering, Beijing Institute of Technology, Zhongguancun South Street No.5, Beijing 100081, China
2
School of Mechanical and Power Engineering, North University of China, University Road No.3, Taiyuan 030051, China
*
Author to whom correspondence should be addressed.
Academic Editors: Paul Stewart and Chris Bingham
Received: 17 March 2015 / Revised: 12 May 2015 / Accepted: 9 June 2015 / Published: 17 June 2015
(This article belongs to the Special Issue Electrical Power and Energy Systems for Transportation Applications)
View Full-Text   |   Download PDF [2090 KB, uploaded 17 June 2015]   |  

Abstract

In-cylinder air flow is very important from the point of view of mixture formation and combustion. In this direction, intake chamber structure and piston crown shape play a very crucial role for in-cylinder air pattern of opposed-piston two-stroke (OP2S) engines. This study is concerned with the three-dimensional (3D) computational fluid dynamics (CFD) analysis of in-cylinder air motion coupled with the comparison of predicted results with the zero-dimensional (0D) parametric model. Three configurations viz., a flat piston uniform scavenging chamber, a flat piston non-uniform scavenging chamber and a pit piston non-uniform scavenging chamber have been studied. 0D model analysis of in-cylinder air flow is consistent with 3D CFD simulation. It is concluded that a pit piston non-uniform scavenging chamber is the best design from the point of view of tumble ratio, turbulent kinetic energy and turbulent intensity, which play very important roles in imparting proper air motion. Meanwhile a flat piston uniform scavenging chamber can organize a higher swirl ratio and lower tumble ratio which is important to improve the scavenging process. View Full-Text
Keywords: in-cylinder air motion; tumble; piston configuration; scavenging system; CFD in-cylinder air motion; tumble; piston configuration; scavenging system; CFD
Figures

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Ma, F.; Zhao, C.; Zhang, F.; Zhao, Z.; Zhang, S. Effects of Scavenging System Configuration on In-Cylinder Air Flow Organization of an Opposed-Piston Two-Stroke Engine. Energies 2015, 8, 5866-5884.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Energies EISSN 1996-1073 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top