All Stories

  1. Performance and emission characteristics of compression ignition engines fueled with oxyhydrogen (HHO): Integrated prognostic and optimization framework
  2. Methanol for decarbonization of the maritime sector: From ideological strategy to practical solutions
  3. Booms and skimmers for oil spill recovery: Perspective analysis from lab scale to practical applications
  4. Integrating methane partial oxidation and thermoelectric generation in a Swiss-roll reactor: Hydrogen and electricity dual production and life cycle assessment
  5. Machine learning and simulated annealing/Moth-flame based prediction-optimization for improving ultrasonication-assisted co-anaerobic digestion
  6. Turning waste into energy: Application of machine learning and explainable artificial intelligence for determining key factors in wastewater-to-hydrogen conversion
  7. Carbon-based flexible thermoelectric generators enhanced by dual-elastomer design, AI prediction, and life cycle optimization
  8. Transparent artificial intelligence models using sequential minimal optimization and extreme Gradient Boosting for accurate performance prediction of solar farms
  9. Data-Driven Hybrid Approach Using Hyperparameter-Optimized Ensemble and Explainable Machine Learning for Assessing Pyrolysis Efficiency of Waste Tires
  10. Binary energy system for hydrogen and biochar production by integrating methanol partial oxidation and bamboo pyrolysis with life cycle analysis
  11. Combining Babool wood-derived producer gas and hydrogen with biodiesel as efficient strategies for dual-fuel diesel engine in advancing sustainable energy
  12. An integrated framework for bio-hydrogen production optimization using novel metaheuristic algorithms and explainable machine learning tuned via grid search
  13. Explainable machine learning-based prediction of fuel consumption in ship main engines using operational data
  14. Towards Sustainable Development Goals: Application of Hydrogen‐Enriched Mahua Biodiesel/Diesel Blend to Dual‐Fuel Diesel Engine
  15. Sustainable transformation to carbon neutrality: Obstacles and solutions
  16. Comprehensive investigation on performance and emission of dual-fuel diesel engine fuelled with biodiesel and hydrogen using D-optimal design and desirability-based multi-attribute optimization
  17. Potential Waste‐to‐Wealth Strategy for Combining Medical Surgical Gloves‐Derived Pyrolysis Oil with Pentanol and Nanoparticles: Experimental Analysis on Engine Behaviors
  18. Dual-fuel diesel engine features powered by ammonia under various pilot-fuel injection timing: Comprehensive analysis and response surface methodology-based optimization
  19. Comprehensive analysis of waste-to-hydrogen technologies integrated with circular economy principles: Potential and challenges
  20. Mitigating backfire occurrence in HHO-gasoline plug-in hybrid motorcycle engine
  21. Thermodynamic and emission analysis of waste plastic oil fuelled diesel engine with Ce-Al catalyst-based catalytic converters – An experimental study
  22. Economic-environmental analysis of solar-wind-biomass hybrid renewable energy system for hydrogen production: A case study in Vietnam
  23. Internet of things-driven approach integrated with explainable machine learning models for ship fuel consumption prediction
  24. Synergetic strategy: upgrading fuel properties of waste starch composite fuels by blending torrefied spent coffee grounds
  25. A comprehensive analysis of energy, exergy, performance, and emissions of a spark-ignition engine running on blends of gasoline, ethanol, and isoamyl alcohol
  26. Enhancing the performance of syngas-diesel dual-fuel engines by optimizing injection regimes: From comparative analysis to control strategy proposal
  27. Operation parameter interaction and optimization of vertical axis wind turbine analyzed by Taguchi method with modified additive model and ANOVA
  28. Waste-to-energy power plants: Multi-objective analysis and optimization of landfill heat and methane gas by recirculation of leachate
  29. Optimization of a unileg thermoelectric generator by the combination of Taguchi method and evolutionary neural network for green power generation
  30. Subsidy policy or dual-credit policy? Evolutionary game analysis of green methanol vehicles promotion
  31. A comprehensive study of artificial neural network for sensitivity analysis and hazardous elements sorption predictions via bone char for wastewater treatment
  32. A comprehensive analysis of the emerging modern trends in research on photovoltaic systems and desalination in the era of artificial intelligence and machine learning
  33. Potential of Explainable Artificial Intelligence in Advancing Renewable Energy: Challenges and Prospects
  34. A review of noncatalytic and catalytic pyrolysis and co-pyrolysis products from lignocellulosic and algal biomass using Py-GC/MS
  35. Lignocellulosic biofuel properties and reactivity analyzed by thermogravimetric analysis (TGA) toward zero carbon scheme - A critical review
  36. Metal oxide-based electrochemical sensors for pesticide detection in water and food samples: a review
  37. Nanocomposite from tannery sludge-derived biochar and Zinc oxide nanoparticles for photocatalytic degradation of Bisphenol A toward dual environmental benefits
  38. Correction: Numerical assessment of polyoxymethylene dimethyl ether (OME3) injection timing in compression ignition engine
  39. Thermodynamic and exergoenvironmental assessments of solar-assisted combined power cycle using eco-friendly fluids
  40. Technological solutions for boosting hydrogen role in decarbonization strategies and net-zero goals of world shipping: Challenges and perspectives
  41. Numerical assessment of polyoxymethylene dimethyl ether (OME3) injection timing in compression ignition engine
  42. Effects of material doping on the performance of thermoelectric generator with/without equal segments
  43. Precise Prediction of Biochar Yield and Proximate Analysis by Modern Machine Learning and SHapley Additive exPlanations
  44. Strategic combination of waste plastic/tire pyrolysis oil with biodiesel for natural gas-enriched HCCI engine: Experimental analysis and machine learning model
  45. Green hydrogen economy: Prospects and policies in Vietnam
  46. Investigating the influence of plastic waste oils and acetone blends on diesel engine combustion, pollutants, morphological and size particles: Dehalogenation and catalytic pyrolysis of plastic waste
  47. Investigation of thermodynamic and kinetic parameters of Albizia lebbeck seed pods using thermogravimetric analysis
  48. Wear Mechanisms Analysis and Friction Behavior of Anodic Aluminum Oxide Film 5083 under Cyclic Loading
  49. High efficient COVID-19 waste co-pyrolysis char/TiO2 nanocomposite for photocatalytic reduction of Cr(VI) under visible light
  50. Tetracycline-adsorbed biochar for solid biofuel usage to achieve waste utilization for environmental sustainability
  51. Waste to fuel: Synergetic effect of hybrid nanoparticle usage for the improvement of CI engine characteristics fuelled with waste fish oils
  52. Environmental pollution mitigation through utilization of carbon dioxide by microalgae
  53. Multi-objective particle swarm optimization applied to a solar-geothermal system for electricity and hydrogen production; Utilization of zeotropic mixtures for performance improvement
  54. Steam explosion as sustainable biomass pretreatment technique for biofuel production: Characteristics and challenges
  55. Intelligent approaches for sustainable management and valorisation of food waste
  56. A review of biowaste remediation and valorization for environmental sustainability: Artificial intelligence approach
  57. Multiple-objective optimization on ammonia decomposition using membrane reactor
  58. A feasible and promising approach for diesel engine fuelled with a blend of biodiesel and low-viscosity Cinnamon oil: A comprehensive analysis of performance, combustion, and exergy
  59. Emerging trends in role and significance of biochar in gaseous biofuels production
  60. Microalgae bio-oil production by pyrolysis and hydrothermal liquefaction: Mechanism and characteristics
  61. Poultry fat biodiesel as a fuel substitute in diesel-ethanol blends for DI-CI engine: Experimental, modeling and optimization
  62. Application of Taguchi design in optimization of performance and emissions characteristics of n-butanol/diesel/biogas under dual fuel mode
  63. Collective influence and optimization of 1-hexanol, fuel injection timing, and EGR to control toxic emissions from a light-duty agricultural diesel engine fueled with diesel/waste cooking oil methyl ester blends
  64. Using Pithecellobium Dulce seed-derived biodiesel combined with Groundnut shell nanoparticles for diesel engines as a well-advised approach toward sustainable waste-to-energy management
  65. Effects of Acetone-Butanol-Ethanol (ABE) addition on HCCI-DI engine performance, combustion and emission
  66. Application of machine learning and Box-Behnken design in optimizing engine characteristics operated with a dual-fuel mode of algal biodiesel and waste-derived biogas
  67. A critical and systematic review of sustainable hydrogen production from ethanol/bioethanol: Steam reforming, partial oxidation, and autothermal reforming
  68. Flexible syngas-biogas-hydrogen fueling spark-ignition engine behaviors with optimized fuel compositions and control parameters
  69. Smart and Sustainable Technologies in energy transition
  70. Thermochemical conversion of large-size woody biomass for carbon neutrality: Principles, applications, and issues
  71. Utilization of nanomaterials in accelerating the production process of sustainable biofuels
  72. Hydrogen Production by Water Splitting with Support of Metal and Carbon-Based Photocatalysts
  73. Microalgal biofuel production: Potential challenges and prospective research
  74. Perovskite solar cells: Thermal and chemical stability improvement, and economic analysis
  75. Experimental investigation on simultaneous production of bioethanol and biodiesel from macro-algae
  76. Triple-objective optimization and electrochemical/technical/environmental study of biomass gasification process for a novel high-temperature fuel cell/electrolyzer/desalination scheme
  77. Pyrolysis of lignocellulosic, algal, plastic, and other biomass wastes for biofuel production and circular bioeconomy: A review of thermogravimetric analysis (TGA) approach
  78. Review of artificial neural networks for gasoline, diesel and homogeneous charge compression ignition engine
  79. Hydrothermal carbonization of food waste as sustainable energy conversion path
  80. Nanomaterials as a sustainable choice for treating wastewater
  81. Production of biochar from crop residues and its application for anaerobic digestion
  82. Strategies to improve membrane performance in wastewater treatment
  83. Threats, challenges and sustainable conservation strategies for freshwater biodiversity
  84. A comparative analysis of biomass torrefaction severity index prediction from machine learning
  85. Energy-saving drying strategy of spent coffee grounds for co-firing fuel by adding biochar for carbon sequestration to approach net zero
  86. Thermal performance assessment of an ejector air-conditioning system with parabolic trough collector using R718 as a refrigerant: A case study in Algerian desert region
  87. Understanding behaviors of compression ignition engine running on metal nanoparticle additives-included fuels: A control comparison between biodiesel and diesel fuel
  88. Role of hydrogen in improving performance and emission characteristics of homogeneous charge compression ignition engine fueled with graphite oxide nanoparticle-added microalgae biodiesel/diesel blends
  89. Remediation of heavy metal polluted waters using activated carbon from lignocellulosic biomass: An update of recent trends
  90. Experimental assessment on characteristics of premixed charge compression ignition engine fueled with multi-walled carbon nanotube-included Tamanu methyl ester
  91. Integration of phase change materials in improving the performance of heating, cooling, and clean energy storage systems: An overview
  92. Multi-objective optimization of diesel engine performance and emission using grasshopper optimization algorithm
  93. Optimization Model to Manage Ship Fuel Consumption and Navigation Time
  94. Techno-economic and environmental evaluation of photovoltaic-thermal collector design with pork fat as phase change material
  95. Application of novel framework based on ensemble boosted regression trees and Gaussian process regression in modelling thermal performance of small-scale Organic Rankine Cycle (ORC) using hybrid nanofluid
  96. Evaluation of oxidation stability and engine behaviors operated by Prosopis juliflora biodiesel/diesel fuel blends with presence of synthetic antioxidant
  97. RETRACTED: Exploration over combined impacts of modified piston bowl geometry and tert-butyl hydroquinone additive-included biodiesel/diesel blend on diesel engine behaviors
  98. Forecasting of future greenhouse gas emission trajectory for India using energy and economic indexes with various metaheuristic algorithms
  99. Optimizing operation parameters of a spark-ignition engine fueled with biogas-hydrogen blend integrated into biomass-solar hybrid renewable energy system
  100. SiO2/TiO2 nanolayer synergistically trigger thermal absorption inflammatory responses materials for performance improvement of stepped basin solar still natural distiller
  101. Using response surface methodology approach for optimizing performance and emission parameters of diesel engine powered with ternary blend of Solketal-biodiesel-diesel
  102. Interfacial-engineered CoTiO3-based composite for photocatalytic applications: a review
  103. Perspective review on Municipal Solid Waste-to-energy route: Characteristics, management strategy, and role in circular economy
  104. Recent advances in bio-inspired multifunctional coatings for corrosion protection
  105. Numerical investigation on melting and energy storage density enhancement of phase change material in a horizontal cylindrical container
  106. Recent Advances in Machine Learning Research for Nanofluid-Based Heat Transfer in Renewable Energy System
  107. Energy-related approach for reduction of CO2 emissions: A critical strategy on the port-to-ship pathway
  108. Emerging potential of spent coffee ground valorization for fuel pellet production in a biorefinery
  109. Biofuel production from microalgae: challenges and chances
  110. Comparative evaluation of AI ‐based intelligent GEP and ANFIS models in prediction of thermophysical properties of ...
  111. Experimental evaluation over the effects of natural antioxidants on oxidation stability of binary biodiesel blend
  112. Biomass-derived biochar: From production to application in removing heavy metal-contaminated water
  113. Recent advances in computational fluid dynamics (CFD) modelling of photobioreactors: Design and applications
  114. Grasshopper optimization algorithm for diesel engine fuelled with ethanol-biodiesel-diesel blends
  115. Catalyst-Based Synthesis of 2,5-Dimethylfuran from Carbohydrates as a Sustainable Biofuel Production Route
  116. Optimization of a vertical axis wind turbine with a deflector under unsteady wind conditions via Taguchi and neural network applications
  117. Energy‐related clean and green framework for shipbuilding community towards zero‐emissions: A strategic analysis from concept to case study
  118. Response surface optimization of microalgae microbial fuel cell (MMFC) enhanced by yeast immobilization for bioelectricity production
  119. Microbial fuel cells for bioelectricity production from waste as sustainable prospect of future energy sector
  120. Microalgae and Macroalgae for Third-Generation Bioethanol Production
  121. Characteristics of hydrogen production from steam gasification of plant-originated lignocellulosic biomass and its prospects in Vietnam
  122. Experimental assessment on performance and combustion behaviors of reactivity-controlled compression ignition engine operated by n-pentanol and cottonseed biodiesel
  123. Heavy metal removal by biomass-derived carbon nanotubes as a greener environmental remediation: A comprehensive review
  124. Influence of injection timing on performance and combustion characteristics of compression ignition engine working on quaternary blends of diesel fuel, mixed biodiesel, and t-butyl peroxide
  125. Liquid hot water as sustainable biomass pretreatment technique for bioenergy production: A review
  126. Progress on the lignocellulosic biomass pyrolysis for biofuel production toward environmental sustainability
  127. Performance evaluation and improvement of thermoelectric generators (TEG): Fin installation and compromise optimization
  128. Experimental analysis of performance and emission of a turbocharged diesel engine operated in dual-fuel mode fueled with bamboo leaf-generated gaseous and waste palm oil biodiesel/diesel fuel blends
  129. A technical review on composite phase change material based secondary assisted battery thermal management system for electric vehicles
  130. Integrated biorefineries, circular bio-economy, and valorization of organic waste streams with respect to bio-products
  131. Energy storage onboard zero-emission two-wheelers: Challenges and technical solutions
  132. A review on application of artificial neural network (ANN) for performance and emission characteristics of diesel engine fueled with biodiesel-based fuels
  133. Acid-based lignocellulosic biomass biorefinery for bioenergy production: Advantages, application constraints, and perspectives
  134. Efficiency improvement of a vertical-axis wind turbine using a deflector optimized by Taguchi approach with modified additive method
  135. Insight into the recent advances of microwave pretreatment technologies for the conversion of lignocellulosic biomass into sustainable biofuel
  136. 2-Methylfuran (MF) as a potential biofuel: A thorough review on the production pathway from biomass, combustion progress, and application in engines
  137. Experimental investigation of solar energy-based water distillation using inclined metal tubes as collector and condenser
  138. Mission, challenges, and prospects of renewable energy development in Vietnam
  139. Advanced super-hydrophobic polymer-based porous absorbents for the treatment of oil-polluted water
  140. Implementation of phase change materials for thermal regulation of photovoltaic thermal systems: Comprehensive analysis of design approaches
  141. Hydrogen-Enriched Biogas Premixed Charge Combustion and Emissions in Direct Injection and Indirect Injection Diesel Dual Fueled Engines: A Comparative Study
  142. Application of the Internet of Things in 3E (efficiency, economy, and environment) factor-based energy management as smart and sustainable strategy
  143. Combustion behavior, performance and emission characteristics of diesel engine fuelled with biodiesel containing cerium oxide nanoparticles: A review
  144. Impacts of COVID-19 pandemic on the global energy system and the shift progress to renewable energy: Opportunities, challenges, and policy implications
  145. Integrating renewable sources into energy system for smart city as a sagacious strategy towards clean and sustainable process
  146. Smart control strategy for effective hydrocarbon and carbon monoxide emission reduction on a conventional diesel engine using the pooled impact of pre-and post-combustion techniques
  147. Oil spill cleanup by raw cellulose-based absorbents: a green and sustainable approach
  148. Influence of Various Basin Types on Performance of Passive Solar Still: A Review
  149. Experimental investigation of novel hybrid phase change materials
  150. Use of Biodiesel Fuels in Diesel Engines
  151. COVID-19 and the Global Shift Progress to Clean Energy
  152. Sorbent-based devices for the removal of spilled oil from water: a review
  153. Biomass-derived 2,5-dimethylfuran as a promising alternative fuel: An application review on the compression and spark ignition engine
  154. Influence of fish oil and waste cooking oil as post mixed binary biodiesel blends on performance improvement and emission reduction in diesel engine
  155. Soft computing-based modeling and emission control/reduction of a diesel engine fueled with carbon nanoparticle-dosed water/diesel ‎emulsion fuel
  156. An analysis and review on the global NO 2 emission during lockdowns in COVID-19 period
  157. Combustion and emission characteristics of spark and compression ignition engine fueled with 2,5-dimethylfuran (DMF): A comprehensive review
  158. Numerical and experimental evaluation on the pooled effect of waste cooking oil biodiesel/diesel blends and exhaust gas recirculation in a twin-cylinder diesel engine
  159. 2,5-Dimethylfuran (DMF) as a promising biofuel for the spark ignition engine application: A comparative analysis and review
  160. Prospective review on the application of biofuel 2,5-dimethylfuran to diesel engine
  161. Synthesis pathway and combustion mechanism of a sustainable biofuel 2,5-Dimethylfuran: Progress and prospective
  162. Thermal constant analysis of phase change nanocomposites and discussion on selection strategies with respect to economic constraints
  163. Record decline in global CO 2 emissions prompted by COVID-19 pandemic and its implications on future climate change policies
  164. Effect of Poly-Alkylene-Glycol Quenchant on the Distortion, Hardness, and Microstructure of 65Mn Steel
  165. Rice bran oil-based biodiesel as a promising renewable fuel alternative to petrodiesel: A review
  166. Thermodynamic Simulation on the Change in Phase for Carburizing Process
  167. Characteristics of PM and soot emissions of internal combustion engines running on biomass-derived DMF biofuel: a review
  168. A review on ignition delay times of 2,5-Dimethylfuran
  169. A remarkable review of the effect of lockdowns during COVID-19 pandemic on global PM emissions
  170. An Experimental Study on the Performance Characteristics of a Diesel Engine Fueled with ULSD-Biodiesel Blends
  171. A state-of-the-art review on emission characteristics of SI and CI engines fueled with 2,5-dimethylfuran biofuel
  172. Flame Characteristics and Ignition Delay Times of 2,5-Dimethylfuran: A Systematic Review With Comparative Analysis
  173. A Review on the Performance, Combustion, and Emission Characteristics of Spark-Ignition Engine Fueled With 2,5-Dimethylfuran Compared to Ethanol and Gasoline
  174. The electric propulsion system as a green solution for management strategy of CO 2 emission in ocean shipping: A comprehensive review
  175. Learned experiences from the policy and roadmap of advanced countries for the strategic orientation to electric vehicles: A case study in Vietnam
  176. Synthesis of activated carbon monolith derived from cocoa pods for supercapacitor electrodes application
  177. Critical review on the characteristics of performance, combustion and emissions of PCCI engine controlled by early injection strategy based on narrow-angle direct injection (NADI)
  178. A simulation study on a port-injection SI engine fueled with hydroxy-enriched biogas
  179. Performance and combustion characteristics of a retrofitted CNG engine under various piston-top shapes and compression ratios
  180. Endless story about the alarming reality of plastic waste in Vietnam
  181. Effects of injection pressure on the NOx and PM emission control of diesel engine: A review under the aspect of PCCI combustion condition
  182. Scrap tire pyrolysis as a potential strategy for waste management pathway: a review
  183. Aalyzing and selecting the typical propulsion systems for ocean supply vessels
  184. The Flywheel Energy Storage System: An Effective Solution to Accumulate Renewable Energy
  185. Applicability of fuel injection techniques for modern diesel engines
  186. A study on a solution to reduce emissions by using hydrogen as an alternative fuel for a diesel engine integrated exhaust gas recirculation
  187. Technological Perspective for Reducing Emissions from Marine Engines
  188. Power generation characteristics of a thermoelectric modules-based power generator assisted by fishbone-shaped fins: Part I – effects of hot inlet gas parameters
  189. Power generation characteristics of a thermoelectric modules-based power generator assisted by fishbone-shaped fins: Part II – Effects of cooling water parameters
  190. A review of the effect of biodiesel on the corrosion behavior of metals/alloys in diesel engines
  191. A core correlation of spray characteristics, deposit formation, and combustion of a high-speed diesel engine fueled with Jatropha oil and diesel fuel
  192. An experimental analysis on physical properties and spray characteristics of an ultrasound-assisted emulsion of ultra-low-sulphur diesel and Jatropha-based biodiesel
  193. Effect of Heat Treatment Process on The Microstructure and Mechanical Properties of The Spray Coating Ni-Cr on CT38 Steel
  194. Comparative analysis on performance and emission characteristics of an in-Vietnam popular 4-stroke motorcycle engine running on biogasoline and mineral gasoline
  195. Experimental study on spray and emission characteristics of a diesel engine fueled with preheated bio-oils and diesel fuel
  196. Trilateral correlation of spray characteristics, combustion parameters, and deposit formation in the injector hole of a diesel engine running on preheated Jatropha oil and fossil diesel fuel
  197. An investigation of deposit formation in the injector, spray characteristics, and performance of a diesel engine fueled with preheated vegetable oil and diesel fuel
  198. Experimental Analysis on the Ultrasound-based Mixing Technique Applied to Ultra-low Sulphur Diesel and Bio-oils
  199. Properties of DMF-fossil gasoline RON95 blends in the consideration as the alternative fuel
  200. Waste heat recovery from diesel engines based on Organic Rankine Cycle
  201. An investigation of remediation and recovery of oil spill and toxic heavy metal from maritime pollution by a new absorbent material
  202. A REVIEW ON FUELS USED FOR MARINE DIESEL ENGINES
  203. Measurement and Prediction of the Density and Viscosity of Biodiesel Blends
  204. Influences of heating temperatures on physical properties, spray characteristics of bio-oils and fuel supply system of a conventional diesel engine
  205. Prediction of the density and viscosity of biodiesel and the influence of biodiesel properties on a diesel engine fuel supply system
  206. MICROSTRUCTURES AND ELEMENTS DISTRIBUTION IN THE TRANSITION ZONE OF CARBON STEEL AND STAINLESS STEEL WELDS
  207. A study of emission characteristic, deposits, and lubrication oil degradation of a diesel engine running on preheated vegetable oil and diesel oil
  208. A review on deposit formation in the injector of diesel engines running on biodiesel
  209. EFFECT OF SN COMPONENT ON PROPERTIES AND MICROSTRUCTURE CU-NI-SN ALLOYS
  210. Impact of Jatropha Oil on Engine Performance, Emission Characteristics, Deposit Formation, and Lubricating Oil Degradation
  211. A novel investigation of oil and heavy metal adsorption capacity from as-fabricated adsorbent based on agricultural by-product and porous polymer
  212. Comparative Analysis on Performance and Emission Characteristic of Diesel Engine Fueled with Heated Coconut Oil and Diesel Fuel
  213. An absorption capacity investigation of new absorbent based on polyurethane foams and rice straw for oil spill cleanup
  214. A MINI REVIEW OF USING OLEOPHILIC SKIMMERS FOR OIL SPILL RECOVERY
  215. MICROSTRUCTURE CHANGE FOR MULTI-PASS WELDING BETWEEN AUSTENITIC STAINLESS STEEL AND CARBON STEEL
  216. The efficient lignocellulose-based sorbent for oil spill treatment from polyurethane and agricultural residue of Vietnam
  217. The Performance of Diesel Engine Fueled Diesel Oil in Comparison with Heated Pure Vegetable Oils Available in Vietnam
  218. The Performance of A Diesel Engine Fueled With Diesel Oil, Biodiesel and Preheated Coconut Oil