Effects of Combustion Parameters on Emissions of Diesel, -Butanol, and -Butanol/2-Ethylhexyl Nitrate Fuels at Different Intake-Oxygen Concentrations in a Diesel Engine
Publication: Journal of Energy Engineering
Volume 147, Issue 1
Abstract
This paper tested one cylinder of a modified light-duty 4-cylinder diesel engine to study the coupling effect of 1.8-bar pressure and oxygen concentration (Coxy) on the combustion process of diesel (B00), -butanol (B20) and nitrate (), with emphasis on the analysis of the influence of combustion state parameters on emission generation. The research results showed that the difference between B00 fuel and B20 fuel in hydrocarbon (HC) and CO emissions was caused mainly by the combustion duration (CD) when the gas circuit concentration was 12%–17%, whereas when the gas circuit Coxy was 9%–12%, the HC and CO emissions were the result of the combined action of the two factors of in-cylinder combustion temperature (IT) and CD. The main influencing factor of emission difference was IT. However, the main influencing factor of soot emission difference at 11%–17% gas circuit Coxy was the ignition delay period (ID), and at 9%–11% gas circuit Coxy it was the in-cylinder combustion temperature. Further research on the emissions difference between B00 fuel and fuel showed that ID plays a decisive role in the reduction of HC and CO emissions.
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Data Availability Statement
All data, models, and code generated or used during the study appear in the published article.
Acknowledgments
This research was financially supported by projects of the Award Program of the National Natural Science Foundation of China (No. 51776177), the Open Project of the Key Laboratory for Vehicle Measurement, Control and Safety of Sichuan Province (No. SZJJ2013-028), and the Open Project of the Key Laboratory for Testing Fluids and Power Machinery of the Education Ministry of China (No. SZJJ2016-006).
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Journal of Energy Engineering
Volume 147 • Issue 1 • February 2021
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© 2020 American Society of Civil Engineers.
History
Received: Dec 16, 2019
Accepted: Jul 6, 2020
Published online: Nov 19, 2020
Published in print: Feb 1, 2021
Discussion open until: Apr 19, 2021
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