Article
Energy & Fuels
Cengizhan Cengiz, Salih Ozen Unverdi
Summary: In this study, the combustion characteristics and emissions of a heavy-duty direct injection diesel engine under early intake valve closing strategy are evaluated. The results show that the strategy can improve combustion efficiency, reduce fuel consumption and NOx emissions. However, it also leads to increased CO emissions when used with EGR.
Article
Green & Sustainable Science & Technology
Inbanaathan Papla Venugopal, Dhinesh Balasubramanian, Amudhan Rajarajan
Summary: The study explored the use of waste cooking oil biodiesel and polyoxymethylene dimethyl ether blends to reduce soot and NOx emissions in CRDI diesel engines without modifications, achieving better fuel efficiency.
JOURNAL OF CLEANER PRODUCTION
(2021)
Article
Energy & Fuels
Jinlin Han, Hesheng Bao, L. M. T. Somers
Summary: This research investigates the reactivity controlled compression ignition combustion of n-butanol and n-heptane in a single cylinder heavy-duty diesel engine. The results show that the double direct injection strategy can properly phase combustion and achieve high thermal efficiency, especially in low to medium load conditions. Furthermore, high exhaust gas recirculation rates are necessary for proper control of combustion phasing. Extremely low particulate matter and NOx emissions were observed across the tested load range, with a gross indicated efficiency exceeding 50% from low to medium load.
Article
Thermodynamics
Sebastian Welscher, Mohammad Hossein Moradi, Antonino Vacca, Peter Bloch, Michael Grill, Uwe Wagner, Michael Bargende, Thomas Koch
Summary: Due to increasing climate awareness and stricter exhaust emission legislation, internal combustion engine technology is facing significant challenges. This study evaluates the potential of water injection on a diesel engine and finds that it has no significant effects on the combustion process but shows great potential for reducing NOx emissions, especially when combined with EGR. The results of this study have important implications for the development of future efficient powertrains.
INTERNATIONAL JOURNAL OF ENGINE RESEARCH
(2023)
Article
Engineering, Multidisciplinary
K. Ghadamkheir, J. Zareei, Xiaohu Yang, M. Hatami
Summary: Diesel engines play an important role in transportation, but the main issues are the high levels of CO2 and soot emissions. A numerical study found that blending oxymethylene ether with diesel can improve engine performance and reduce emissions. The results showed that using oxymethylene ether can significantly decrease soot and NOx emissions by over 80%, and also reduce CO2 emissions by approximately 66%.
ALEXANDRIA ENGINEERING JOURNAL
(2023)
Article
Energy & Fuels
Hechun Wang, Binbin Wang, Chuanlei Yang, Deng Hu, Baoyin Duan, Yinyan Wang
Summary: This paper studies the dual injection strategy of a diesel ignition ammonia/hydrogen mixed fuel engine through simulation, selecting the optimal combination of dual injection timing to improve combustion and emission performance. The results show that with delayed fuel injection timing, engine power and economy decline, while HC, soot, CO, and N2O emissions increase and NOx emissions decrease. After using ammonia/hydrogen mixed fuel, ammonia and hydrogen escape are low, and the emission of HC, soot, and CO is also low. The best injection timing combination is D698/A/H698, which has the best power and economic performance. N2O emissions are low, but NOx emissions are relatively high. The research results can promote the development of ammonia fuel and provide theoretical guidance for its practical application. Evaluation: 9/10.
Article
Energy & Fuels
P. Pavan, K. Bhaskar, S. Sekar
Summary: The experimental investigation demonstrated that a 40% reduction in NO emission was observed by introducing 10% pilot fuel and higher injection pressure at 32°bTDC compared with single injection mode at 23°bTDC. Smoke, HC, and CO emissions were found to be lower at 34°bTDC by 26.2%, 19.2%, and 21.5% respectively, with the same strategy. A slight increase in CO2 emission by 1.62% was noticed at 500 bar injection pressure at this injection timing compared to single injection mode.
Article
Energy & Fuels
Zhenxian Zhang, Wuqiang Long, Pengbo Dong, Hua Tian, Jiangping Tian, Bo Li, Yang Wang
Summary: In this study, the Ammonia/Diesel dual direct injection mode of a two-stroke low speed engine was evaluated. It was found that the injection timing of diesel can regulate the engine combustion phase, improving the combustion efficiency and indicated thermal efficiency of ammonia. Furthermore, by optimizing the injection timings of diesel and ammonia, the fuel type NOx emission produced by ammonia combustion can be reduced.
Article
Energy & Fuels
Mohammed A. Fayad, Hind A. Al-Salihi, Hayder A. Dhahad, Farag M. Mohammed, Bashar R. Al-Ogidi
Summary: The study showed that the use of post-injection strategy and alternative fuels can reduce nitrogen oxide emissions from diesel engines, while also lowering the concentration of particulate matter and altering the characteristics of particles.
ENERGY SOURCES PART A-RECOVERY UTILIZATION AND ENVIRONMENTAL EFFECTS
(2021)
Article
Thermodynamics
Tianjia Zhou, Peng Geng, Xiuwei Lu
Summary: The study revealed significant impacts of intake air humidification and start of injection timing on cylinder pressure, temperature, NOx, and soot formation in marine diesel engines. Adjusting different parameters can effectively control exhaust emissions.
COMBUSTION SCIENCE AND TECHNOLOGY
(2022)
Article
Thermodynamics
Bahram Jafari, Mahdi Seddiq, Seyyed Mostafa Mirsalim
Summary: This research shows that increasing syngas energy ratio and adjusting diesel injection timing can effectively reduce emissions and improve engine performance. However, increasing syngas ratio may also lead to higher combustion and heat transfer losses.
ENERGY CONVERSION AND MANAGEMENT
(2021)
Article
Chemistry, Physical
Shresht Kakran, Rajneesh Kaushal, Vijay Kumar Bajpai
Summary: This paper presents a performance study of a Compression Ignition engine using a fuel combination of diesel and hydrogen-diesel. The experimental results indicate improvements in Brake Thermal efficiency, reduction in Brake Specific Fuel Consumption and slight decrease in Volumetric efficiency when using hydrogen-diesel fuel.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Energy & Fuels
Motong Yang, Yaodong Wang
Summary: Diesel engines in the automotive industry emit over 1.8 times more emissions than petrol engines, making emission control important. The Miller cycle, with its ability to reduce NOx emissions by changing the compression ratio, has gained popularity alongside turbocharging technology. This study uses Ricardo WAVE software to model and simulate the NOx emissions and engine performance of diesel engines under different loads with two types of Miller cycles (EIVC and LIVC). The results show that both versions of the Miller cycle are most effective in reducing NOx emissions at 10% load, with EIVC achieving a maximum reduction of 21% and LIVC achieving 37%.
Article
Energy & Fuels
Mohammad Taghi Zarrinkolah, Vahid Hosseini
Summary: Alternative combustion mode and change of spray geometry have the potential to reduce methane slip in a dual fuel diesel-natural gas internal combustion engine. Two reactivity controlled compression ignition (RCCI) modes show better results compared to conventional diesel methane dual-fuel combustion. The angle of diesel spray also affects methane slip, with spray towards the squish area reducing slip.
Article
Energy & Fuels
Xiumei Zhang, Rui Yang, Parthiban Anburajan, Quyet Van Le, Mishal Alsehli, Changlei Xia, Kathirvel Brindhadevi
Summary: By adding nanoparticles and hydrogen to the waste cooking oil biodiesel blends in a direct ignition engine, this research achieved improvements in performance parameters. The use of fuel blends had a positive impact on increasing power, torque, and brake thermal efficiency, while reducing fuel consumption.
Article
Green & Sustainable Science & Technology
Huseyin Gurbuz
Summary: This study investigated the effects of thermal barrier coating and diesel-ethanol mixture fuel on harmful emissions and performance of diesel engines. The results showed that thermal barrier coating improved combustion efficiency, while the addition of ethanol decreased engine power.
ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY
(2022)
Article
Green & Sustainable Science & Technology
Mutlucan Bayat, Mehmet Ozalp, Hueseyin Gurbuz
Summary: This paper presents a comprehensive analysis of the performance of a high-temperature PEM fuel cell through a novel model and experimental comparison. Results indicate that increasing the operating temperature has a significant impact on energy and exergy efficiency.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2022)
Article
Engineering, Multidisciplinary
Huseyin Gurbuz, Tarkan Sandalci
Summary: The effects of methane intake port injection and direct diesel injection on emissions and combustion in a light-duty RCCI engine were investigated numerically. The study found that these parameters have significant impacts on performance and emissions.
ALEXANDRIA ENGINEERING JOURNAL
(2023)
Article
Green & Sustainable Science & Technology
Huseyin Gurbuz
Summary: Battery cost, short-range, and long charging time problems in electric vehicles can be effectively solved by equipping vehicles with a compatible fuel cell. In this study, a hydrogen-powered PEM fuel cell and a battery-powered electric vehicle model were simulated under different driving cycle conditions. The PEM fuel cell increased the potential range of the vehicle by 113% on a single charge. The NEDC driving cycle stored the most energy and consumed the least hydrogen.
ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY
(2023)
Article
Environmental Sciences
Yasin Karagoz, Ozgun Balci, Huseyin Gurbuz
Summary: This study compares the energy consumption and emissions of different ethanol-gasoline blends in various driving cycles. The results show that increasing ethanol content improves energy consumption, CO, and HC emissions, but also increases NOX emissions. Among the three driving cycles, the ECE driving cycle has the lowest NOX emissions.
ENVIRONMENTAL ENGINEERING AND MANAGEMENT JOURNAL
(2022)
Article
Thermodynamics
Huseyin Gurbuz, Tarkan Sandalci
Summary: The research investigated the effects of ethanol on engine performance and emissions under different conditions, using fumigation and emulsion methods. It was found that the emulsion method (E5) reduced NOx emissions at both low and high engine speeds, while post injection strategies generally increased NOx emissions due to improved combustion and increased in-cylinder temperatures. Soot emissions decreased significantly with E5, showing an improvement of approximately 87% in post injection strategies.
Article
Engineering, Multidisciplinary
Huseyin Gurbuz, Hasan Gokkaya
PAMUKKALE UNIVERSITY JOURNAL OF ENGINEERING SCIENCES-PAMUKKALE UNIVERSITESI MUHENDISLIK BILIMLERI DERGISI
(2014)
