Showing papers on "Diesel engine published in 2021"
TL;DR: In this article, the preparation methods and physicochemical properties of biodiesel-based fuels containing Cerium Oxide (CeO2) nanoparticles were fully introduced, and the effects of CeO2 on the atomization and micro-explosion of as-used fuels were also discussed in detail.
157 citations
University of Malaya1, King Abdulaziz University2, China Medical University (Taiwan)3, Duy Tan University4, P A College of Engineering5, B.V.B. College of Engineering and Technology6, RMIT University7, King Khalid University8, Center for Advanced Materials9, Virginia Tech College of Natural Resources and Environment10, Adama University11
TL;DR: In this paper, the performance and emission characteristics of a modified common rail direct injection (CRDI) diesel engine fueled by Ricinus communis biodiesel (RCME20), diesel (80%), and their blends with strontium-zinc oxide (Sr@ZnO) nanoparticle additives were evaluated.
139 citations
TL;DR: In the situation of ever-depleting fossil fuels and serious environment pollution, the use of bio-diesel has been considered as a promising fuel in the situation as discussed by the authors.
Abstract: Biodiesel has been considering as promising fuel in the situation of ever-depleting fossil fuels and serious environment pollution. Beside clearly known advantages, high viscosity and density, and ...
122 citations
TL;DR: In this paper, the effects of Fe2O3 based diesel oxidation catalyst and selective catalytic reduction catalyst on the engine characteristic of diesel engine fueled with biodiesels and diesel in the experimental study were investigated.
116 citations
TL;DR: Biodiesel has been emerging as a potential and promising biofuel for the strategy of reducing toxic emissions and improving engine performance, and the development of a novel approach like the ANN model to anticipate engine performance and exhaust emissions with high accuracy was believed to be the best choice.
111 citations
TL;DR: In this article, a comparative study on the effects of energy substitution ratio (ESR) on the combustion characteristics and performance of a dual fuel engine fueled with diesel/methanol, diesel/ethanol and diesel/n-butanol was conducted experimentally.
103 citations
TL;DR: A detailed review on palm biodiesel as a notable alternative in respect to the economy, environment, and efficiency is presented in this article, where a thorough production process, properties, advantages, disadvantages, and the global economy of palm biodiesels are discussed and the sustainability, social, and environmental impact of leading palm oil producers like Malaysia, Indonesia, and Thailand.
100 citations
TL;DR: In this paper, the influence of fuel borne additive on ternary fuel blend operated in a single cylinder DI diesel engine is investigated. And it is concluded that addition of 20ppm alumina nano additive in TF can enhance the engine performance and combustion as well as lower the exhaust pollutants simultaneously.
95 citations
TL;DR: In this paper, different ABE ratios in the diesel fuel and injection timings were tested in the AVL diesel engine, and obtained the combustion and emission characteristics parameters for the late model calibration.
84 citations
TL;DR: In this article, a diesel engine is operated in RCCI mode with gaseous fuels viz. CNG as a primary fuel and a blend of diesel and Karanja biodiesel (BD20) as pilot fuel.
Abstract: Heterogeneous combustion in a diesel engine is noisier, uncontrolled and more polluting. This can be achieved with a strategic approach of a reactivity-controlled compression ignition (RCCI) mode engine that operates with low and high reactive fuel combinations. In the present work, a diesel engine is operated in RCCI mode with gaseous fuels viz. CNG as a primary fuel and a blend of diesel and Karanja biodiesel (BD20) as pilot fuel. This research aims to determine the operating limits of CNG fuel for less noisy combustion and clean exhaust. Further, relative air-fuel ratio (λ), cycle to cycle variations, combustion noise and emissions were studied for full load operation. The CRDI engine is optimized for diesel operation with a split injection strategy. The knock limits for CNG as the primary fuel are obtained. The combustion noise increases at a higher energy share by CNG. Also, higher values of HC and CO emissions are observed. This may be due to higher energy share values, flame speed and octane number of CNG fuel. Further, NOx emissions and smoke are decreased. The CNG induction of 10 ms with 90% ES can be noted as a knock limit for 3.5 kW power. The highest BTHE of 24.2% and least BSFC 0.3 kg/kWhr reported by 60%ES of LRF is better than diesel and KBD20 fuel. An optimum 60% energy share of CNG is observed for clean combustion and emissions strategy using the RCCI mode of a modified diesel engine.
84 citations
TL;DR: In this paper, the performance characteristics of a mustard biodiesel (M100) along with Methane as a dual fuel in research diesel engine was examined. But the performance of the M100 was not evaluated.
Abstract: This study is aimed to examine the performance characteristics of a mustard biodiesel (M100) along with Methane as a dual fuel in research diesel engine. Mustard oil biodiesel is employed in this s...
TL;DR: In this paper, a comparison of three rates of EGR emission values with all types of test fuels to optimize the EGR rate leading into the inlet charge was made with different EGR rates for B20 blend fuel.
01 Jun 2021
TL;DR: In this paper, the authors provide a comprehensive review to examine the working mechanism, performance metrics, and recent developments of the aforementioned heavy-duty diesel powertrain technologies, highlighting the advantages and disadvantages of each.
Abstract: Greenhouse gas emissions from the freight transportation sector are a significant contributor to climate change, pollution, and negative health impacts because of the common use of heavy-duty diesel vehicles (HDVs). Governments around the world are working to transition away from diesel HDVs and to electric HDVs, to reduce emissions. Battery electric HDVs and hydrogen fuel cell HDVs are two available alternatives to diesel engines. Each diesel engine HDV, battery-electric HDV, and hydrogen fuel cell HDV powertrain has its own advantages and disadvantages. This work provides a comprehensive review to examine the working mechanism, performance metrics, and recent developments of the aforementioned HDV powertrain technologies. A detailed comparison between the three powertrain technologies, highlighting the advantages and disadvantages of each, is also presented, along with future perspectives of the HDV sector. Overall, diesel engine in HDVs will remain an important technology in the short-term future due to the existing infrastructure and lower costs, despite their high emissions, while battery-electric HDV technology and hydrogen fuel cell HDV technology will be slowly developed to eliminate their barriers, including costs, infrastructure, and performance limitations, to penetrate the HDV market.
01 Jun 2021
TL;DR: In this article, N-pentane was used in different extents of 5, 10, and 15 ml per liter as an enhancer additive to improve brake thermal efficiency and brake specific fuel consumption.
Abstract: Biodiesel extracted from Scenedesmus obliquus algae through transesterification was used in the current study. Due to the disadvantages of using pure biodiesel in engines, it was used as B50 (a blend of 50% diesel and 50% biodiesel). To enhance engine performance, n-pentane was used in different extents of 5, 10, and 15 ml per liter as an enhancer additive. Through performance tests, it was found that 15 ml of n-pentane per liter was the best addition as it caused an increase in the brake thermal efficiency of 7.1% and a decrease in brake specific fuel consumption of 6.4% compared to the elegant B50. Whereas for exhaust gases, there was an increase in nitrogen oxides, which was associated with the significant increase in exhaust temperature and the high oxygen content present in B50. In comparison, hydrocarbons emission decreased by 7.2% compared to B50 in contrast to carbon dioxide which increased by 22.3% over B50. The carbon monoxide and oxygen concentrations of the exhaust gases also decreased by 17.35% and 9.5%, respectively compared to B50. The results obtained indicated that there are a significant improvements in pressure evolution and heat release data, which depend on the role of the mixed fuel addition of n-pentane.
TL;DR: In this paper, a comparative study of the combustion characteristics and performances of a dual-fuel engine fueled with diesel/methanol and diesel-polyoxymethylene dimethyl ether (PODE) blend was conducted on a heavy-duty common rail diesel engine at an engine speed of 1800 r/min.
TL;DR: In this paper, the authors explored the impacts of titanium dioxide (TiO2) nanoparticles along with the water-in-diesel (DWS) emulsion fuel on the engine attributes, emission and combustion of a single cylinder diesel engine.
B.V.B. College of Engineering and Technology1, University of Malaya2, King Khalid University3, Center for Advanced Materials4, King Abdulaziz University5, SDM College of Engineering and Technology6, Virginia Tech College of Natural Resources and Environment7, China Medical University (Taiwan)8, Techno India9
TL;DR: In this article, the performance and emission characteristics of a dual-fuel diesel/Honge Oil Methyl Ester (HOME)-PG operated CI engine has been studied and the injector nozzles with 4, 5, and 6 holes (diameter of 02, 025, and 03 mm) were analyzed.
Abstract: The improvement in performance has been observed by changing the injector nozzle's geometry of the dual-fuel liquid–gas engine The combined effect of injector parameters and producer gas (PG) derived from the redgram stalk on the performance and emission characteristics of a dual-fuel diesel/Honge Oil Methyl Ester (HOME)-PG operated CI engine has been studied The injector nozzles with 4, 5, and 6 holes (diameter of 02, 025, and 03 mm) were analyzed Diesel-PG operation with 4 holes, 025 mm diameter nozzle and HOME-PG operation with 6 holes, 025 mm diameter nozzle resulted in better performance and lower emissions Diesel-PG operation has 45% higher BTE (brake thermal efficiency) with a 4 hole nozzle and 07% higher for a 025 mm diameter 6 holes nozzle than HOME-PG operation The HOME-PG operation results showed that the with an injection opening pressure of 240 bar, 6-hole nozzle, and a diameter of 025 mm have an improved BTE of 58% with emission levels 15–30% lower than those of other geometries
TL;DR: In this paper, the use of Spirulina biodiesel blends had a positive impact on the reduction of greenhouse gas emissions, including reductions of 16.3%, 3.6, 6.8, and 12.35% of CO, NOx, and smoke, respectively.
Abstract: There is wide consensus that Spirulina can serve as a tool for wastewater management and simultaneously provide feedstock for biorefining. However, the economic aspects associated with its use remain a significant challenge. Spirulina cultivated in wastewater decreased the concentrations of both ammonia and nitrate and also served as a biodiesel source. The oil obtained in the feedstock was subjected to transesterification and turned into biodiesel. The biodiesel was subsequently analyzed in a test motor (water-cooled, four-stroke, single-cylinder compression ignition with injection). The tests were conducted at a constant 1500 rpm, and the output power was 3.7 kW. Mixtures of diesel and biodiesel were also enriched with carbon nanotubes (CNTs). The amount of CNTs added to the diesel was 30 mg L−1. The algae and de-oiled biomass were characterized using XRD analysis, and an ultrasonicator was used to mix the CNTs with diesel and spirulina blends. A series of tests were conducted at different load conditions (25%, 50%, 75%, and 100%) for all fuel blends. Test results were compared with a neat diesel engine with a CR of 17.5:1. Among the fuel blends, the B25 reported improved brake thermal efficiency and reduced emissions. The outcomes are a reduction in thermal efficiency of 0.98% and exhaust gas temperature of 1.7%. The addition of Spirulina biodiesel blends had a positive impact on the reduction of greenhouse gas emissions, including reductions of 16.3%, 3.6%, 6.8%, and 12.35% of CO, NOx, and smoke, respectively. The specific fuel consumption and CO2 emissions were reduced by 5.2% and 2.8%, respectively, for B25 fuel blends compared to plain diesel and B50. Concerning cost competitiveness, vigorous research on microalgae for the production of biodiesel can cut production costs in the future.
TL;DR: In this paper, the authors make an attempt to add aluminium oxide (AL2O3) nanoparticles (25, 100ppm) into diesel-methanol blends, and to study the impact of the nanoparticle additive on the characteristics of a modern DI diesel engine.
TL;DR: In this paper, an experimental work for fuelling a single cylinder direct injection (DI) diesel engine with Fish oil ethyl ester (FOEE) and its blends to assess their impact on engine characteristics was presented.
TL;DR: In this article, the authors examined the emission characteristics of a mustard biodiesel (M100) along with Methane as a dual fuel in a research diesel engine and found that the maximum redu
Abstract: This study is aimed to examine the emission characteristics of a mustard biodiesel (M100) along with Methane as a dual fuel in research diesel engine Experimental results revealed the maximum redu
TL;DR: In this article, the performance, combustion and emission characteristics of a single-cylinder four-stroke, direct injection diesel engine fueled with fish oil biodiesel and waste palm cooking oils biodiesel via.
TL;DR: In this paper, the authors highlight the unique potentials of nanomaterials and their activities in diesel engines to achieve lower harmful diesel emissions and better engine performance, and discuss technical challenges that will need to be addressed and resolved to assure practical viability of nanOMaterials acting as fuel additives.
TL;DR: In this article, the combustion performance of the mixtures of ammonia and hydrogen in a medium speed marine diesel engine was investigated theoretically, and the HCCI combustion mode was selected for reducing thermal-NOx production.
TL;DR: In this paper, the authors proposed to enhance the utilization of Jatropha biodiesel in a CI engine by using higher alcohols and graphene oxide nano-additives (GO).
Ton Duc Thang University1, University of Engineering and Technology, Lahore2, University of Malaya3, Kyungpook National University4, P A College of Engineering5, King Khalid University6, Center for Advanced Materials7, Jiangsu University8, Banha University9, Menoufia University10, King Abdulaziz University11, Taif University12
TL;DR: In this article, the authors evaluated the emission and performance characteristics of a CI engine using biodiesel blends with three different nanoparticles, including CNT, TiO2 and Al2O3 nanoparticles.
TL;DR: In this paper, the optimum production yield of Food Industrial Waste Oil Methyl Ester (FIWOME, B100, FIWOB) was modelled using Response Surface Methodology (RSM) and Artificial Neural Network (ANN) techniques.
TL;DR: The applied soft computing combination appears to be a promising approach to model and optimize operating parameters and fuel composition of diesel engines.
TL;DR: In this paper, five ternary blends have been prepared in a variety of proportions from linseed and rubber seed oil, and the performance efficiency and emissions tests were carried out in a single-cylinder water-cooled diesel engine.
TL;DR: In this paper, the authors focused on the usage of blends of microalgae Spirulina (L.) with conventional diesel in a variable compression ratio engine at varying loads, compression ratios (CR) and concentration of blends.