Article
Chemistry, Physical
Srikanth Vadlamudi, S. K. Gugulothu, Jibitesh Kumar Panda, B. Deepanraj, P. R. Vijaya Kumar
Summary: Using hydrogen and hydrogen-enriched CNG as fuel in a diesel engine, it was found that dual-fuel operations can generate higher in-cylinder pressure and better combustion, while significantly reducing engine emissions.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Chemistry, Physical
Huaming Dai, Bingqian Zhang, Zhuoyu Li, Jiajun Wu
Summary: The study showed that hydrogen injection position and width can affect the combustion characteristics of methane, while the velocity and equivalence ratio of the gases also have an impact on CO and NOx emissions.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Energy & Fuels
V. Praveena, Femilda Josephin Joseph Shobana Bai, Dhinesh Balasubramanian, Yuvarajan Devarajan, Fethi Aloui, Edwin Geo Varuvel
Summary: Inducting hydrogen with biodiesel in a compression ignition engine can improve engine performance and minimize harmful emissions, although it may increase NOx emissions. The use of retrofit devices can help reduce NOx emissions.
Article
Chemistry, Physical
Yang Wang, Xiaohu Zhou, Long Liu
Summary: This study investigated the combustion performance of ammonia and hydrogen mixtures in a medium-speed marine diesel engine, proposing a scheme to reduce NOx emissions by lowering combustion temperature, introducing EGR, and combining with post-treatment technology.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Xiumin Yu, Yinan Li, Dongjie Liu, Zezhou Guo, Jiahua Zhang, Qi Zhu
Summary: This paper investigates the effects of hydrogen direct injection strategies on the combustion and emission characteristics of n-butanol/hydrogen dual-fuel engines and finds the superior split hydrogen direct injection strategy that can balance dynamics and emission characteristics.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Energy & Fuels
Min Fan, Zhaoyu Li, Shijun Song, Tahani Awad Alahmadi, Sulaiman Ali Alharbi, Sabarathinam Shanmugam, G. K. Jhanani, Kathirvel Brindhadevi
Summary: With the increasing global population and growing awareness of the dangers of climate change, there is a greater need for sustainable and eco-friendly fuels. One efficient and appealing option is using biodiesel derived from non-edible sources. This paper focuses on the preparation and analysis of biodiesel from Karanja oil, comparing its emissions and combustion results to those of pure diesel.
Article
Energy & Fuels
Changlei Xia, Kathirvel Brindhadevi, Ashraf Elfasakhany, Mishal Alsehli, Siriporn Tola
Summary: The experimental study found that adding hydrogen can improve the combustion performance of compression ignition engines, while increasing the concentration of nanoparticles significantly improves brake thermal efficiency and reduces emissions. However, a slight decrease in NOx was observed under 75% engine load condition without the addition of nanoparticles.
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
Shiyi Pan, Jinhua Wang, Zuohua Huang
Summary: This study compared the effects of four different hydrogen injection strategies on the distribution, combustion, and emissions of hydrogen mixtures. The results showed that different hydrogen injection strategies resulted in different types of hydrogen mixture distribution. Adjusting the hydrogen injection strategy can optimize the engine's combustion and emission performance.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2022)
Article
Chemistry, Physical
Zhen Fu, Wenzhi Gao, Yuhuai Li, Xinyu Hua, Jiahua Zou, Yong Li
Summary: A three-dimensional numerical model of a hydrogen direct-injection engine was established and verified using experimental data. The study evaluated the influence of injection timing and nozzle diameter on ultra-lean combustion. Results showed that delaying injection timing increased mixture concentration near the spark plug and combustion speed, leading to higher thermal efficiency and shorter combustion duration and ignition lag. Increasing nozzle diameter shortened injection duration and concentrated mixture distribution, with combustion rate being more sensitive to mixture distribution under ultra-lean combustion.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2023)
Article
Thermodynamics
Andy Thawko, Amnon Eyal, Leonid Tartakovsky
Summary: This study discusses the performance and emissions of a direct-injection spark-ignition engine using hydrogen, hydrogen-rich reformate, and methane. The research reveals that the reformate fuel results in the highest total particle number concentration due to its longer injection duration. An optimal hydrogen injection strategy is identified to minimize particle number emission. Additionally, the overall system thermal efficiency is found to be higher in the engine running on reformate compared to hydrogen.
ENERGY CONVERSION AND MANAGEMENT
(2022)
Article
Green & Sustainable Science & Technology
Subrata Bhowmik, Abhishek Paul, Rajsekhar Panua
Summary: The study demonstrated that advancing the pilot fuel injection angle significantly improved the engine's performance, resulting in higher brake thermal efficiency and lower hydrocarbon and carbon monoxide emissions, but increased nitrogen oxide emissions. The results highlighted the effectiveness of advancing biodiesel-based ternary blend pilot fuel injection in extracting better performance output from a hydrogen dual fuel CRDI engine.
ENVIRONMENTAL PROGRESS & SUSTAINABLE ENERGY
(2022)
Article
Chemistry, Physical
Surya Kanth, Sumita Debbarma
Summary: Hydrogen enrichment improves combustion and increases thermal efficiency, while reducing fuel consumption and emissions. Rice bran oil performs better than karanja biodiesel in terms of performance.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
Article
Chemistry, Physical
Kubilay Bayramoglu, Semih Yilmaz
Summary: This study numerically investigated the effects of hydrogen on diesel engine performance, showing that optimal improvements in performance can be achieved under specific injection ratios and timings, but at the cost of increased NOx emissions.
INTERNATIONAL JOURNAL OF HYDROGEN ENERGY
(2021)
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
Energy & Fuels
V. Edwin Geo, Ankit Sonthalia, G. Nagarajan, B. Nagalingam, Fethi Aloui
JOURNAL OF ENERGY RESOURCES TECHNOLOGY-TRANSACTIONS OF THE ASME
(2019)
Article
Agricultural Engineering
B. Jayakishan, G. Nagarajan, J. Arun
BIORESOURCE TECHNOLOGY
(2019)
Article
Engineering, Mechanical
R. Murugan, D. Ganesh, G. Nagarajan
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART D-JOURNAL OF AUTOMOBILE ENGINEERING
(2020)
Article
Green & Sustainable Science & Technology
Ganesh Duraisamy, Murugan Rangasamy, Nagarajan Govindan
Article
Energy & Fuels
Justin Jacob Thomas, C. Manojkumar, V. R. Sabu, G. Nagarajan
Article
Thermodynamics
Justin Jacob Thomas, V. R. Sabu, G. Nagarajan, Suraj Kumar, G. Basrin
Article
Energy & Fuels
Murugan Rangasamy, Ganesh Duraisamy, Nagarajan Govindan
Article
Energy & Fuels
Justin Jacob Thomas, V. R. Sabu, G. Basrin, G. Nagarajan
Summary: This study suggests that using hexanol as an alternative fuel to diesel can reduce nitrogen oxides and smoke emissions, as well as increase engine combustion efficiency. The research found that increasing the percentage of hexanol at the same injection pressure can enhance the engine's peak pressure and heat release rates.
Article
Thermodynamics
Justin Jacob Thomas, G. Nagarajan, V. R. Sabu, C. Manojkumar, Vikas Sharma
Summary: This study investigates the operation of a low-temperature reactivity controlled compression ignition (RCCI) engine using fuel derived from agro/food industry waste. The use of residual cooking oil (RCOB) and n-hexanol as high reactivity fuel (HRF) and low reactivity fuel (LRF), respectively, shows promising results in terms of reduced smoke and NO emissions, as well as improved thermal efficiency.
Article
Transportation Science & Technology
Murugan Rangasamy, Ganesh Duraisamy, Nagarajan Govindan, Yogesh Vaidhyanathan, Balakumar Sellamuthu
Summary: Using both methanol and dimethyl ether as fuels in RCCI combustion demonstrates higher thermal efficiency and lower emissions, with the need for a dedicated fuel supply system for DME. The possibility of using EGR to extend the load range of RCCI combustion by reducing NO emissions is promising.
SAE INTERNATIONAL JOURNAL OF ENGINES
(2022)
Article
Thermodynamics
Kavin Robert Mohanasundaram, Nagarajan Govindan
Summary: The experimental study investigated the effects of intake air pre-heating, exhaust gas re-circulation, and hydrogen enrichment on the performance, combustion, and emission characteristics of a dual fuel mode engine using CH4/waste cooking oil biodiesel. Results showed that increasing the energy share of gaseous fuel extended the ignition delay, with higher CO and HC emissions in CH4 combustion compared to conventional diesel operation. However, improvements in thermal efficiency, reduced CO and HC emissions, and lower NOx emissions were observed with hydrogen-enriched CH4 combustion.
Article
Transportation Science & Technology
Murugan Rangasamy, Ganesh Duraisamy, Nagarajan Govindan
SAE INTERNATIONAL JOURNAL OF ENGINES
(2020)
Article
Energy & Fuels
V. Edwin Geo, G. Nagarajan, B. Nagalingam, Fethi Aloui, Mohand Tazerout
Proceedings Paper
Green & Sustainable Science & Technology
Sivalingam Murugan, Hariharan Sundaramoorthi, Govindan Nagarajan, Bohumil Horak
EXERGY FOR A BETTER ENVIRONMENT AND IMPROVED SUSTAINABILITY 2: APPLICATIONS
(2018)
Article
Chemistry, Multidisciplinary
V. R. Sabu, Justin Jacob Thomas, G. Nagarajan