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Energies 2015, 8(7), 6365-6381; doi:10.3390/en8076365

An Experimental Investigation on the Combustion and Heat Release Characteristics of an Opposed-Piston Folded-Cranktrain Diesel 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 Editor: Hossam A. Gabbar (Gaber)
Received: 21 April 2015 / Revised: 11 June 2015 / Accepted: 12 June 2015 / Published: 25 June 2015
(This article belongs to the Special Issue Energy Conservation in Infrastructures)
View Full-Text   |   Download PDF [1253 KB, uploaded 25 June 2015]   |  

Abstract

In opposed-piston folded-cranktrain diesel engines, the relative movement rules of opposed-pistons, combustion chamber components and injector position are different from those of conventional diesel engines. The combustion and heat release characteristics of an opposed-piston folded-cranktrain diesel engine under different operating conditions were investigated. Four phases: ignition delay, premixed combustion, diffusion combustion and after combustion are used to describe the heat release process of the engine. Load changing has a small effect on premixed combustion duration while it influences diffusion combustion duration significantly. The heat release process has more significant isochoric and isobaric combustion which differs from the conventional diesel engine situation, except at high exhaust pressure and temperature, due to its two-stroke and uniflow scavenging characteristics. Meanwhile, a relatively high-quality exhaust heat energy is produced in opposed-piston folded-cranktrain diesel engines. View Full-Text
Keywords: opposed-piston two-stroke; combustion characteristics; rate of heat release; exergy analysis opposed-piston two-stroke; combustion characteristics; rate of heat release; exergy analysis
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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).

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Ma, F.; Zhao, C.; Zhang, F.; Zhao, Z.; Zhang, Z.; Xie, Z.; Wang, H. An Experimental Investigation on the Combustion and Heat Release Characteristics of an Opposed-Piston Folded-Cranktrain Diesel Engine. Energies 2015, 8, 6365-6381.

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