Article
Thermodynamics
Zhiqing Zhang, Jiangtao Li, Jie Tian, Rui Dong, Zhi Zou, Sheng Gao, Dongli Tan
Summary: This study investigates the effects of diesel/ethanol/n-butanol blends on combustion and emission characteristics of a diesel engine. The results showed that blended fuels improved brake thermal efficiency and reduced nitrogen oxides, carbon monoxide, and soot emissions.
Article
Energy & Fuels
S. Gowthaman, K. Thangavel
Summary: The study shows that coconut shell oil and its blends can be effectively used in diesel engines, resulting in better combustion performance and lower emissions. The CSO20 blend exhibits lower fuel consumption rate and higher heat release rate, while producing fewer pollutants.
Article
Environmental Sciences
Senthil Kumar Srinivasan, Rajan Kuppusamy, Purushothaman Krishnan
Summary: The research investigates the combustion, performance, and emission characteristics of a CI engine using neat biodiesel mixed with alumina and titanium oxide nanoparticles. The addition of nanoparticles resulted in increased brake thermal efficiency, reduced brake-specific fuel consumption, and decreased CO, HC, and smoke emissions, while NOx emissions increased compared to neat biodiesel.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Energy & Fuels
Zhiqing Zhang, Jie Tian, Jiangtao Li, Junshuai Lv, Su Wang, Yunhao Zhong, Rui Dong, Sheng Gao, Chao Cao, Dongli Tan
Summary: This study investigates and compares the effects of blended fuels with different alcohol substitution ratios on the combustion, performance, and emission characteristics of a diesel engine. The results show that the D80M10B10 blended fuel is the most beneficial in improving cylinder pressure, prolonging ignition delay, and shortening combustion duration. Additionally, the addition of alcohol fuels reduces soot, HC, and CO emissions, but increases NOx emissions.
Article
Thermodynamics
Ravikumar Jayabal, Sekar Subramani, Damodharan Dillikannan, Yuvarajan Devarajan, Lakshmanan Thangavelu, Mukilarasan Nedunchezhiyan, Gopal Kaliyaperumal, Melvin Victor De Poures
Summary: This study investigates the combined effect of compression ratio and exhaust gas recirculation on the combustion, performance, and emissions of a common rail direct injection engine fueled by a blend of sapota methyl ester and diesel. The results show that increasing the compression ratio reduces ignition delay and increases heat release rate. Higher exhaust gas recirculation rates reduce nitrogen oxide emissions but increase smoke opacity. The use of the biodiesel blend reduces hydrocarbon and carbon monoxide emissions compared to neat diesel. The optimal condition for improved combustion, performance, energy, and reduced emissions is a 50% biodiesel blend with a compression ratio of 16 and an exhaust gas recirculation rate of 20%.
Article
Thermodynamics
Vishal Saxena, Niraj Kumar, Vinod Kumar Saxena
Summary: The experimental assessment explored the viability of Acacia Concinna biodiesel as a surrogate to mineral diesel in a light duty commercial diesel engine. The results showed that the AC biodiesel fuel blends had higher combustion efficiency and heat loss compared to diesel, but the engine operation was smooth and effective up to a B30 fuel blend (AC30D70) with only increased NOx emissions being a concern.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Green & Sustainable Science & Technology
Iyman Abrar, Ashok N. Bhaskarwar
Summary: In this study, sustainable butanol-diesel-water microemulsions were developed to replace up to 40% of diesel without surfactants. These microemulsions exhibited properties meeting diesel specifications and showed improved combustion characteristics and reduced emissions compared to neat diesel.
SUSTAINABLE ENERGY TECHNOLOGIES AND ASSESSMENTS
(2021)
Article
Thermodynamics
Harish Venu, V. Dhana Raju, S. Lingesan, Manzoore Elahi M. Soudagar
Summary: The research shows that adding 20 ppm alumina nano additive in ternary fuel blend can enhance engine performance and combustion efficiency, while reducing exhaust emissions.
Article
Engineering, Chemical
Shaoji Chen, Jie Tian, Jiangtao Li, Wangzhen Li, Zhiqing Zhang
Summary: The study found that increasing the methanol content in blended fuel significantly improves the emission and power characteristics of diesel engines. As the proportion of methanol in the blended fuel increases, cylinder pressure and soot emissions decrease to varying extents, while power shows a decreasing trend.
Article
Environmental Sciences
Mert Gulum
Summary: A blend of diesel fuel and corn oil in the ratio of 80:20 (v/v) was prepared, and 1-butanol and 1-pentanol were separately mixed with the blend to form ternary blends in different ratios. The pure diesel fuel and ternary blends were tested at various engine speeds and throttle positions. A regression model and its trigonometric Fourier series were proposed to represent the variation of in-cylinder pressure, and were compared to the Gaussian function. The ternary blends showed lower brake effective efficiency, peak heat release rate, shorter combustion duration, longer ignition delay, lower CO, HC, and smoke emissions, while higher NOX emission. The proposed model and Fourier series coincided well with the pressure data.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Thermodynamics
Ferroudja Nezlioui, Abdelhakim Benslimane, Brahim Hamtache, Adel Sahi, Mohand Said Lounici, Djamel Sadaoui
Summary: The development of a model for studying the performance and combustion characteristics of a supercharged diesel engine was the main objective of this study. The model showed that the addition of a turbocharger increases low-speed airflow and fuel consumption, while an increase in intake pressure and temperature affects the combustion characteristics. Furthermore, an increase in the compression ratio leads to simultaneous changes in all parameters, but the maximum combustion pressure limit must be considered.
COMBUSTION SCIENCE AND TECHNOLOGY
(2023)
Article
Thermodynamics
Jinkun Wang, Xiwen Deng, Guangyi Xie, Jilin Lei, Dewen Jia
Summary: This paper analyzes the effects of teardrop dimples size and dimple head-and-tail orientation on flow and heat transfer inside the cooling gallery. By establishing computational fluid dynamics models, it is found that the teardrop dimples affect the local oil flow patterns. The presence of dimples increases the fluid charge ratio and improves the heat transfer coefficient and uniformity of the cooling gallery.
CASE STUDIES IN THERMAL ENGINEERING
(2023)
Article
Energy & Fuels
K. Sudalaiyandi, Karthick Alagar, Vignesh R. Kumar, Manoj V. J. Praveen, P. Madhu
Summary: Fossil fuels are being depleted and researchers are turning to new energy options. A study was conducted to investigate the efficiency and emissions of diesel fuel blended with linseed and rubber seed oil as biodiesels. The experimental results showed that blends with 5% and 10% of linseed and rubber seed oil had the optimum performance efficiency compared to other blends.
Article
Thermodynamics
Serhat Gunaydin, Ahmet Uyumaz, Tolga Kocakulak, Sertac Cosman, Hamit Solmaz, Fatih Aksoy
Summary: Diesel's ignition characteristics can be improved by using dibutyl maleate as an additive. Experimental results showed that the addition of dibutyl maleate increased in-cylinder pressure and ignition delay, while reducing combustion duration and thermal efficiency. The usage of dibutyl maleate also led to lower hydrocarbon and soot emissions, but increased carbon monoxide, carbon dioxide, and nitrogen oxides emissions.
APPLIED THERMAL ENGINEERING
(2024)
Article
Energy & Fuels
R. Vigneswaran, Dhinesh Balasubramanian, B. D. Sabari Sastha
Summary: This study investigated the impact of emulsion fuel with TiO2 nanoparticle additive on the engine attributes of a mono-cylinder diesel powertrain. Results showed improvements in brake thermal efficiency and reduced emissions compared to diesel fuel, particularly at full loads.
Article
Thermodynamics
Dongli Tan, Yao Wu, Junshuai Lv, Jian Li, Xiaoyu Ou, Yujun Meng, Guanglin Lan, Yanhui Chen, Zhiqing Zhang
Summary: The purpose of this research was to achieve the best performance, combustion and emission characteristics of a marine engine fueled with hydrogen, water and rapeseed methyl ester blend fuel. The study found that adding appropriate amounts of hydrogen and water to biodiesel can achieve efficient, low carbon and clean combustion in marine engines.
Review
Energy & Fuels
Yanhui Zhang, Sheng Gao, Zhiqing Zhang, Weiqing Li, Tao Yuan, Dongli Tan, Lin Duan, Guanhua Yang
Summary: The application of oxygenated alternative fuels, such as higher alcohols, in diesel engines shows great potential for solving the energy crisis and environmental pollution. This paper investigates the synergistic effects of higher alcohols and their additives on the combustion, performance and emission characteristics of compression ignition (CI) engines. The research on advanced alcohols and their additives has made significant progress, however, there is little review on their effects on diesel engines. Therefore, this paper summarizes the effects of higher alcohols and their additives on CI engines and provides important conclusions and suggestions for future research on the use of higher alcohols in CI engines.
Article
Thermodynamics
Dongli Tan, Dongmei Li, Su Wang, Zhiqing Zhang, Jie Tian, Jiangtao Li, Junshuai Lv, Wenling Zheng, Yanshuai Ye
Summary: This study aims to optimize the combustion and emission parameters of biodiesel-hydrogen engines through a 3D simulation model, experimental investigation, and response surface method. The results show that hydrogen addition enhances combustion and emission properties. The optimal working conditions include a hydrogen energy percentage of 6.9%, a load of 100%, and an EGR of 7.7%.
Article
Thermodynamics
Sheng Gao, Yanhui Zhang, Zhiqing Zhang, Dongli Tan, Junming Li, Zibin Yin, Jingyi Hu, Ziheng Zhao
Summary: This study investigated the performance and emission characteristics of diesel engines operating in highland areas. Through the use of response surface methodology and artificial neural networks, the emissions were predicted for different combustion chamber geometries. The predictions were then optimized using a non-dominated sorting genetic algorithm to obtain the optimal solutions.
Article
Chemistry, Physical
Bo Li, Lei Fan, Jie Bai, Jinhang He, Jianfeng Su, Song Wang, Chao Deng, Shifeng Liu, Zhiqing Zhang
Summary: This study compared the effects of three polishing technologies on the measurement of porosity in pure aluminum coatings. The research results showed that mechanical polishing and argon-ion-beam polishing were unable to fully reveal the pore structure, while a combination of electrolytic polishing and argon-ion-beam polishing could perfectly reveal the porosity in pure aluminum coatings.
Article
Polymer Science
Yanshuai Ye, Jingyi Hu, Zhiqing Zhang, Weihuang Zhong, Ziheng Zhao, Jian Zhang
Summary: This article optimizes the combustion and emission of gasoline-cassava bioethanol fuel blends in electronic fuel injection engines using response surface methodology. The findings show that by optimizing the mixture ratio, lower emission levels can be achieved, promoting the sustainable development of renewable energy and reducing pollutant emissions.
Review
Green & Sustainable Science & Technology
Dongli Tan, Yao Wu, Zhiqing Zhang, Yue Jiao, Lingchao Zeng, Yujun Meng
Summary: This paper discusses the impact of life cycle assessment, life cycle cost assessment, and social life cycle assessment on the construction of solar power projects, and considers the uncertainty analysis of various factors. The results show that further integration of these three assessment methods is needed to support the development of sustainable energy.
Article
Geochemistry & Geophysics
Kewei Shen, Duojun Wang, Libing Wang, Li Yi, Zhiqing Zhang, Chunjie Cao
Summary: The electrical conductivity of clinochlore was measured under high temperatures and pressures, and it was found that the conductivity significantly increased at high temperatures due to the release of aqueous fluids. This result is critical for understanding the water cycling processes during subduction and explaining the high-conductivity anomalies beneath volcanic arcs. The dehydration of clinochlore forms an interconnected network of fluids, resulting in a significant increase in conductivity.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2023)
Article
Multidisciplinary Sciences
Yanhui Chen, Jian Zhang, Zhiqing Zhang, Weihuang Zhong, Ziheng Zhao, Jingyi Hu
Summary: This study investigated the impact of different proportions of biodiesel blends on the performance and emission characteristics of a diesel engine. A three-dimensional simulation model was created using CONVERGE software to simulate the combustion process. The results showed that biodiesel blends could improve the brake thermal efficiency and reduce soot emissions, but they also led to increased fuel consumption and NOx emissions.
Review
Environmental Sciences
Jianbin Luo, Yuanhao Tie, Lifei Tang, Yuan Li, Hongxiang Xu, Zhonghang Liu, Mingsen Li, Haiguo Zhang, Zhiqing Zhang
Summary: With the increasing attention to environmental protection, emission regulations have become stricter worldwide. Diesel engines are a major source of pollution, and the exhaust pollutants cause significant harm to the environment and human health. Diesel particulate filter (DPF) technology has been proven to be the most effective way to control and treat soot. This paper provides a comprehensive review of the latest research progress on DPF regeneration and ash, including different regeneration methods, ash composition and deposition, and the impact of ash on DPF performance.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Oncology
Xiaoyun Bu, Shuang Liu, Zhiqing Zhang, Jie Wu, Shuguang Pan, Yingbin Hu
Summary: This study conducted a comprehensive analysis of eRNAs in stage II/III colorectal cancer using total RNA-seq data. Two novel molecular subtypes, named C1 and C2, were identified, with C1 associated with poor prognosis and C2 associated with better survival outcomes. Additionally, C1 showed enrichment with immune infiltration and increased sensitivity to immune checkpoint inhibitors.
CLINICAL & TRANSLATIONAL ONCOLOGY
(2023)
Review
Environmental Sciences
Jianbin Luo, Haiguo Zhang, Zhonghang Liu, Zhiqing Zhang, Yajuan Pan, Xiguang Liang, Shizhuo Wu, Hongxiang Xu, Song Xu, Chunmei Jiang
Summary: With the global emphasis on environmental protection and carbon neutrality, there is a need for reductions in pollutants such as carbon dioxide, nitrogen oxide, and particulate matter. Diesel engines are a major contributor to particulate matter pollution, and diesel particulate filter (DPF) technology has proven to be effective in controlling soot. This review discusses the exacerbating effect of particulate matter on human infectious diseases, the latest developments in DPF performance, soot catalytic oxidant schemes, and areas for future research.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Thermodynamics
Dongli Tan, Rui Dong, Zhiqing Zhang, Bin Zhang, Feng Jiang, Yanshuai Ye, Dongmei Li, Hui Liu
Summary: This study develops a hybrid multi-objective optimization approach to optimize the comprehensive trap performance of diesel particulate filter (DPF). Critical structures are selected through fuzzy grey correlation analysis, and machine learning models are trained to relate the structures to filtration efficiency and pressure drop. The optimized DPF shows significant improvement in both pressure drop and filtration efficiency.
Article
Chemistry, Applied
Zhiqing Zhang, Ziheng Zhao, Dongli Tan, Yanshuai Ye, Bin Zhang, Bo Huang, Weihuang Zhong, Jian Zhang, Jingyi Hu
Summary: This review provides a detailed summary of the mechanism of water's effect on SCR reactions, discussing the impact of reaction conditions and catalyst types on SCR reactions and catalysts, and collating improvement strategies to enhance the activity and water resistance of SCR catalysts.
FUEL PROCESSING TECHNOLOGY
(2023)
