Article
Energy & Fuels
Flavio Caresana, Marco Bietresato, Massimiliano Renzi
Summary: This study proposes an interpretation for the higher formation of NOx in a compression ignition engine when fueled with pure biodiesel. Experimental results show that NOx emissions with RME are at least 9% higher compared to mineral diesel fuel.
Article
Chemistry, Physical
Ameer Suhel, Norwazan Abdul Rahim, Mohd Rosdzimin Abdul Rahman, Khairol Amali Bin Ahmad
Summary: The influence of magnetite nanoparticles and hydrogen induction on the combustion performance and exhaust emissions of CFME20 blend was evaluated in a 1-cylinder dual DICI engine. Results showed a significant reduction in emissions, especially oxides of nitrogen, with the nano-additive fuel. Performance parameters improved with escalating nanoparticles dosage. Hydrogen induction further decreased emissions and enhanced the BTE, although oxides of nitrogen increased with higher hydrogen flow rates.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Energy & Fuels
Suozhu Pan, Jiangjun Wei, Changfa Tao, Gang Lv, Yejian Qian, Qiang Liu, Weiqiang Han
Summary: This study investigates the effects of cerium oxide nanoparticles on the performance and emissions of a diesel engine. The results show that methanol-based nanofluids with CeO2 nanoparticles can improve engine thermal efficiency and reduce emissions compared to pure methanol mode.
Article
Energy & Fuels
Wojciech Tutak, Arkadiusz Jamrozik, Karol Grab-Rogalinski
Summary: This paper investigates the co-combustion of hydrogen with diesel fuel and biodiesel in a compression-ignition engine at maximum load. The study reveals that co-combusting hydrogen with diesel fuel and biodiesel has minimal impact on ignition delay but reduces combustion time, especially when using biodiesel. The highest energy efficiency for the dual-fuel engine is achieved with a 12% hydrogen content, with greater efficiency gains observed when powered by biodiesel. Hydrogen as a fuel in compression ignition engines shows favorable outcomes for CO, CO2, and soot emissions, but increases in NO and HC emissions.
Article
Chemistry, Physical
Mukund Kumar, Subrata Bhowmik, Abhishek Paul
Summary: This study highlights the impact of fuel injection pressure and timing on the performance, combustion, and emission of a hydrogen dual fuel engine using Jatropha biodiesel as pilot fuel. Higher fuel injection pressure and timing improve engine efficiency and combustion, while reducing unburned hydrocarbon and soot emissions. However, nitrogen oxide emissions increase.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Energy & Fuels
Pradeep Raju, Senthil Kumar Masimalai, Nataraj Ganesan
Summary: This study focuses on the efficient utilization of waste cooking oils and alternative vegetable oils in engine fuel. Experimental results show that the blend of WCO and neat diesel (ND) in a dual-fuel diesel engine, labeled as WCOB50, has a negligible reduction in brake thermal efficiency (BTE) compared to pure diesel. Additionally, the impact of hydrogen induction on tailpipe exhaust emissions from a CI engine using WCOB fuel is examined.
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
(2021)
Article
Energy & Fuels
C. Prabhu, B. Navaneetha Krishnan, T. Prakash, V. Rajasekar, Dhinesh Balasubramanian, Van Vang Le, Nguyen Viet Linh Le, Phuoc Quy Phong Nguyen, Van Nhanh Nguyen
Summary: This study compared the behavior of a CI engine operating on biodiesel and hydrogen-enriched dual fuel mode. The influence of unsaturation degree on engine behavior was assessed and compared among different biodiesel fuels. The results showed that with increasing degree of unsaturation, the induction of hydrogen decreased, with CBD tolerating the highest hydrogen energy share without knocking. Furthermore, the study found that in dual-fuel mode, GSBD exhibited superior characteristics in terms of performance, combustion, and emissions compared to WGBD.
Article
Green & Sustainable Science & Technology
Justas Zaglinskis, Alfredas Rimkus
Summary: This research compares the air pollution, energy, and noise indicators of different fuel types in a compression ignition engine. The study found that second-generation biodiesel blends performed better than traditional diesel fuel and first-generation biodiesel blends in most cases. Second-generation biodiesel reduced fuel consumption and pollutant emissions, but it comes at a higher price.
Article
Energy & Fuels
Almas Mukhametov, Akmaral Utelbayeva
Summary: This study used different emission allocation principles to determine the greenhouse gas emission reduction factors for rapeseed methyl ester and rapeseed oil ethyl ester, showing that rapeseed methyl ester has a better performance in reducing hydrocarbon emissions. Additionally, pure rapeseed methyl ester and pure rapeseed oil ethyl ester have lower CO emissions and reduced smoke density compared to fossil diesel fuel.
Article
Energy & Fuels
Sina Faizollahzadeh Ardabili, Bahman Najafi, Mortaza Aghbashlo, Zahra Khounani, Meisam Tabatabaei
Summary: The use of dual-fuel combustion process with additives like carbon nanoparticles and water in the fuel can improve engine performance and reduce emissions.
Article
Thermodynamics
Mohan Govindasamy, Silambarasan Rajendran
Summary: This investigation explores the potential use of sapota biodiesel as a partial substitute for diesel fuel, demonstrating promising thermal stability, combustion characteristics, and reduced emissions. Experimental results show that the brake thermal efficiency of B20 is 1.08% higher than diesel, but the NO emissions from biodiesel are elevated due to a higher quantity of unsaturated esters.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Energy & Fuels
Erny Afiza Alias, Ftwi Yohaness Hagos, Muhammad Izhar Ishak, Fatimah Dzaharudin, Abdul Adam Abdullah, Ameerul Asyraff
Summary: The study found that using MB-mixed fuels in diesel engines can improve fuel efficiency, but may also lead to an increase in emissions.
Article
Chemistry, Multidisciplinary
Violeta Makareviciene, Kiril Kazancev, Egle Sendzikiene, Milda Gumbyte
Summary: The aim of this study was to investigate the enzymatic interesterification process of rapeseed oil with methyl formate and determine the influence of three independent variables on the product yield. The industrial preparation Lipozyme TL IM was selected after evaluating the effectiveness of three enzymatic preparations. A model describing the dependence of rapeseed methyl esters yield on the molar ratio of methyl formate to oil, amount of catalyst, and process duration was created using the surface response methodology. The highest yield of rapeseed oil methyl esters (81.79%) was obtained under the conditions of 40:1 molar ratio, 60-hour process duration, and 14.57% catalyst Lipozyme TL IM. Comparative studies of the physical and chemical properties of the product obtained during the interesterification process were conducted and their compliance with biodiesel standard EN 14214 was evaluated.
GREEN CHEMISTRY LETTERS AND REVIEWS
(2023)
Article
Chemistry, Physical
B. Kanimozhi, Govind Kumar, Mishal Alsehli, Ashraf Elfasakhany, Dhinakaran Veeman, Santhosh Balaji, Thanu Thiran, T. R. Praveen Kumar, Manigandan Sekar
Summary: The main purpose of this study is to analyze the effects of oxy hydrogen (HHO) along with the Moringa oleifera biodiesel blend on engine performance, combustion, and emission characteristics. The results show that adding HHO gas to the blend can reduce fuel consumption and the concentration of CO, HC, and CO2 emissions, but does not reduce the formation of NO. However, adding HHO to the biodiesel can significantly reduce the average NOx.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Jami Paparao, S. Murugan
Summary: This research investigates the engine behavior of a compression ignition engine operated in dual-fuel mode with HHO as the primary fuel. The results show that using HHO can improve the engine's thermal efficiency and diesel combustion efficiency at maximum load, while reducing exhaust gas temperature and emissions of pollutants.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)