A study on exhaust emission characteristics according to operating conditions and butanol blended fuels in a small diesel engine for fishing vessel

2021 ◽  
Vol 57 (3) ◽  
pp. 256-263
Author(s):  
Sang-Am KIM ◽  
Woo-Gyeong WANG
Keyword(s):  
Diesel Engine ◽  
Operating Conditions ◽  
Exhaust Emission ◽  
Emission Characteristics ◽  
Fishing Vessel ◽  
Blended Fuels

Effect of Biodiesel-Ethanol Blended Fuel Spray Characteristics on the Reduction of Exhaust Emissions in a Common-Rail Diesel Engine

2008 ◽  
Author(s):  
Seung Hyun Yoon ◽  
Su Han Park ◽  
Hyun Kyu Suh ◽  
Chang Sik Lee
Keyword(s):  
Diesel Engine ◽  
Diesel Fuel ◽  
Injection Rate ◽  
Fuel Spray ◽  
Exhaust Emission ◽  
Emission Characteristics ◽  
Blended Fuel ◽  
Ethanol Blends ◽  
Blended Fuels ◽  
Conventional Diesel Fuel

An experiment was performed to analyze the effects of biodiesel-ethanol blended fuel spray on the combustion and exhaust emission characteristics of a single-cylinder common-rail diesel engine. To analyze the macroscopic and microscopic characteristics of biodiesel blended fuel spray, measurements of the injection rate, droplet diameter, and spray tip penetration were taken using an injection rate meter, spray visualization and a droplet measuring system. The combustion, exhaust emission characteristics and size distributions of particulate matter were determined for various engine operating conditions using biodiesel-ethanol blends, and the results were compared to those of conventional diesel fuel. In this investigation, the measured results of biodiesel-ethanol blended fuels show that the Sauter mean diameter (SMD) decreased with an increase of relative velocity between the injected fuel and ambient gas. Comparing the combustion characteristics of diesel fuel and biodiesel-ethanol blended fuels, both diesel and blended fuel showed similar trends in combustion pressure and the rate of heat release. However, the combustion of biodiesel-ethanol blends had lower combustion characteristics such as combustion pressures and heat release rates than those of diesel fuel because of their lower heating values. In the case of exhaust gas recirculation (EGR), the indicated specific NOx (ISNOx), and soot concentrations were lower than those of conventional diesel fuel.

Diesel Fuel Multiple Injection Effects on Emission Characteristics of Diesel Engine Mixed Ammonia Gas Into Intake Air

2019 ◽  
Vol 141 (6) ◽  
Author(s):  
Yoichi Niki ◽  
Yoshifuru Nitta ◽  
Hidenori Sekiguchi ◽  
Koichi Hirata
Keyword(s):  
Diesel Engine ◽  
Diesel Fuel ◽  
Internal Combustion Engines ◽  
Experimental Results ◽  
Exhaust Emission ◽  
N2o Emissions ◽  
Emission Characteristics ◽  
Exhaust Gas ◽  
N2o Production ◽  
Combustion Processes

This study focuses NH3 as an alternative fuel for internal combustion engines, because NH3 is known as a H2 carrier and its combustion does not produce CO2 causing global warming. On the other hand, some reports show that unburned NH3 and N2O appear in exhaust gas, when NH3 is used as fuel for compression ignition or spark ignition engines. NH3 is toxic and N2O is one of the greenhouse gases. These emissions should not be emitted. These reports point out that exhaust gas after treatments and/or injection strategies can be effective to reduce these emissions. From our previous investigations, it was confirmed that NH3 and N2O were contained in the exhaust gas of a conventional diesel engine with NH3 gas mixed into the engine intake. In this study, NH3 combustion processes in the diesel engine were investigated from the experimental results. Based on the investigations, a pilot or postinjection was conducted to reduce emissions of NH3 and N2O. In this paper, first the experimental results of the combustion and exhaust emission characteristics on the conventional diesel engine with NH3 gas mixed into the engine intake are shown. NH3 and N2O emissions are then verified by analyzing the exhaust gas. Next, NH3 combustion processes in the diesel engine are considered from the experimental results to report on the effects of a pilot and postdiesel fuel injection on NH3 and N2O production processes. The experimental results suggest that the multiple diesel fuel injections would be one of the effective measures to reduce N2O and NH3 emissions on NH3 and diesel dual-fueled engine.

Investigation on the Combustion and Emission Characteristics of Light-Vehicle Diesel Engine Fueled with Bio-Diesel

2011 ◽  
Vol 268-270 ◽  
pp. 1313-1316
Author(s):  
Yi Tao
Keyword(s):  
Diesel Engine ◽  
Delay Time ◽  
Ignition Delay Time ◽  
Calorific Value ◽  
Operating Conditions ◽  
Emission Characteristics ◽  
Soot Emission ◽  
Complete Combustion ◽  
Combustion Duration ◽  
Light Vehicle

Tests were performed with a light-vehicle diesel engine. Four representative operating conditions in 1600r/min speed have been considered. This article compares the combustion and emission characteristics of engine fueled with Bio-diesel and standard diesel. The results showed that the ignition delay time and combustion duration shorten when fuel with bio-diesel. Bio-diesel contains more oxygen and that contribute to complete combustion of fuel. The combustion of bio-diesel fuel results higher NOx emission and lower HC、CO emissions at all operating conditions. But lower Soot emission because of bio-diesel dose not contains sulfides. At the same time, fuel consumption higher, because calorific value of bio-diesel is lower than standard diesel.

A study of combustion and exhaust emission characteristics for early fuel injection diesel engine

2004 ◽  
Vol 2004.I (0) ◽  
pp. 151-152
Author(s):  
Yukihiro AIMOTO ◽  
Shinji NAJIMA ◽  
Osamu MORIUE ◽  
Masato MIKAMI ◽  
Naoya KOJIMA
Keyword(s):  
Diesel Engine ◽  
Fuel Injection ◽  
Exhaust Emission ◽  
Emission Characteristics

Effect of Hydrogen Fraction in Intake Mixture on Combustion and Exhaust Emission Characteristics of a Diesel Engine

2009 ◽  
Author(s):  
Toru Miyamoto ◽  
Masato Mikami ◽  
Naoya Kojima ◽  
Hajime Kabashima ◽  
Yasuhiro Urata
Keyword(s):  
Diesel Engine ◽  
Exhaust Emission ◽  
Emission Characteristics
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