The Experts below are selected from a list of 360 Experts worldwide ranked by ideXlab platform

Chang Sik Lee - One of the best experts on this subject based on the ideXlab platform.

  • influence of the mixture of gasoline and diesel fuels on droplet atomization combustion and Exhaust Emission characteristics in a compression ignition engine
    Fuel Processing Technology, 2013
    Co-Authors: Su Han Park, In Mo Youn, Yunsung Lim, Chang Sik Lee
    Abstract:

    Abstract The purpose of this study was to investigate the fuel properties, droplet atomization, combustion performance, and Exhaust Emission characteristics of gasoline–diesel direct blended fuels in a four-cylinder diesel engine. The gasoline fuel was blended as a volumetric fraction of conventional diesel fuel. The droplet size of test fuels was measured using a phase Doppler particle analyzer (PDPA), and the combustion and Emission characteristics were investigated for a four-cylinder diesel engine with a common-rail injection system and Emission analyzer. In this study we found that increasing the gasoline volume fraction decreased the fuel density, kinematic viscosity, and surface tension. The temperature for 10% distillation (T10) decreased as the gasoline fraction increased. The blending of gasoline caused a decrease in droplet size by increasing the small droplets and decreasing the large droplets because the surface tension decreased with the addition gasoline fuel, thereby inducing an increase in droplet instability. On the other hand, gasoline blending resulted in an extension of the ignition delay and the formation of a more homogeneous mixture. These combustion characteristics caused the simultaneous reduction of ISNOx and ISsoot. However, the ISHC and ISCO Emissions were slightly increased. The difference in ISHC and ISCO Emissions between pure diesel and gasoline blended diesel fuels decreased as the engine load increased. An increase in engine load diminished the effects of gasoline blending on combustion performance and Exhaust Emissions.

  • influence of ethanol blends on the combustion performance and Exhaust Emission characteristics of a four cylinder diesel engine at various engine loads and injection timings
    Fuel, 2011
    Co-Authors: Su Han Park, In Mo Youn, Chang Sik Lee
    Abstract:

    The aim of this work is to investigate the effect of ethanol blending to diesel fuel on the combustion and Exhaust Emission characteristics of a four-cylinder diesel engine with a common-rail injection system. The overall spray characteristics, such as the spray tip penetration and the spray cone angle, were studied with respect to the ethanol blending ratio. A spray visualization system and a four-cylinder diesel engine equipped with a combustion and Emission analyzer were utilized so as to analyze the spray and Exhaust Emission characteristics of the ethanol blending diesel fuel. Ethanol blended diesel fuel has a shorter spray tip penetration when compared to pure diesel fuel. In addition, the spray cone angle of ethanol blended fuels is larger. It is believed that the lower fuel density of ethanol blended fuels affects the spray characteristics. When the ethanol blended fuels are injected around top dead center (TDC), they exhibit unstable ignition characteristics because the higher ethanol blending ratio causes a long ignition delay. An advance in the injection timing also induces an increase in the combustion pressure due to the sufficient premixed duration. In a four-cylinder diesel engine, an increase in the ethanol blending ratio leads to a decrease in NOx Emissions due to the high heat of evaporation of ethanol fuel, however, CO and HC Emissions increase. In addition, the CO and HC Emissions exhibit a decreasing trend according to an increase in the engine load and an advance in the injection timing.

  • effects of bioethanol blended diesel fuel on combustion and Emission reduction characteristics in a direct injection diesel engine with Exhaust gas recirculation egr
    Energy & Fuels, 2010
    Co-Authors: Su Han Park, Junepyo Cha, Chang Sik Lee
    Abstract:

    The aim of this investigation is to clarify the effects of bioethanol on the combustion and Exhaust Emission characteristics, as well as the spray and atomization characteristics of bioethanol−diesel blended fuels in a single-cylinder diesel engine. The spray and Exhaust Emission characteristics are analyzed using the spray visualization system, the droplet analysis measuring system, and the single-cylinder diesel engine with an Exhaust Emission analyzer. In addition, the effects of Exhaust gas recirculation (EGR) on the Emission characteristics are also investigated. In the analysis of the experimental results for the spray characteristics, it revealed that the spray tip penetration of bioethanol-blended diesel fuel shows almost similar behavior compared to a pure diesel fuel and the blended fuels show a wide spray cone angle, before the impingement to the piston bowl wall. In the case of the bioethanol blends, the mean reduction percentage of the droplet size increases as the bioethanol blending ratio i...

S Ashrafur M Rahman - One of the best experts on this subject based on the ideXlab platform.

  • engine combustion performance and Emission characteristics of gas to liquid gtl fuels and its blends with diesel and bio diesel
    Renewable & Sustainable Energy Reviews, 2014
    Co-Authors: H Sajjad, M A Kalam, H H Masjuki, M Varman, M I Arbab, S Imtenan, S Ashrafur M Rahman
    Abstract:

    Crude oil price hikes, energy security concerns and environmental drivers have turned the focus to alternative fuels. Gas to liquid (GTL) diesel is regarded as a promising alternative diesel fuel, considering the adeptness to use directly as a diesel fuel or in blends with petroleum-derived diesel or bio-diesel. GTL fuel derived from Fischer–Tropsch synthesis is of distinctly different characteristics than fossil diesel fuel due to its paraffinic nature, virtually zero sulfur, low aromatic contents and very high cetane number. GTL fuel is referred to as a “clean fuel” for its inherent ability to reduce engine Exhaust Emission even with blends of diesel and bio-diesel. This paper illustrates feasibility of GTL fuel in context of comparative fuel properties with conventional diesel and bio-diesels. This review also describes the technical attributes of GTL and its blends with diesel and bio-diesel focusing their impact on engine performance and Emission characteristics on the basis of the previous research works. It can introduce an efficacious guideline to devise several blends of alternative fuels, further the development of engine performance and constrain Exhaust Emission to cope with the relentless efforts to manufacture efficient and environment friendly powertrains.

  • engine combustion performance and Emission characteristics of gas to liquid gtl fuels and its blends with diesel and bio diesel
    Renewable & Sustainable Energy Reviews, 2014
    Co-Authors: H Sajjad, H H Masjuki, M Varman, M I Arbab, S Imtenan, S Ashrafur M Rahman
    Abstract:

    Crude oil price hikes, energy security concerns and environmental drivers have turned the focus to alternative fuels. Gas to liquid (GTL) diesel is regarded as a promising alternative diesel fuel, considering the adeptness to use directly as a diesel fuel or in blends with petroleum-derived diesel or bio-diesel. GTL fuel derived from Fischer–Tropsch synthesis is of distinctly different characteristics than fossil diesel fuel due to its paraffinic nature, virtually zero sulfur, low aromatic contents and very high cetane number. GTL fuel is referred to as a “clean fuel” for its inherent ability to reduce engine Exhaust Emission even with blends of diesel and bio-diesel.

  • experimental investigation of mustard biodiesel blend properties performance Exhaust Emission and noise in an unmodified diesel engine
    APCBEE Procedia, 2014
    Co-Authors: A Sanjid, M A Kalam, H H Masjuki, M J Abedin, S Ashrafur M Rahman
    Abstract:

    Abstract Mustard biodiesel was produced from waste mustard oil and physicochemical properties were investigated. MB showed superior calorific value (40.404 MJ/kg), oxidation stability (15.92 h), cloud point (5 °C) and pour point (-18 °C) than any other conventional biodiesels. During engine performance test MB10 and MB20 showed 8-13% higher BSFC and 5-6% lower BTE compared to B0. By contrast, MB blends produced 7-8% less BP and 6-8% less engine torque compared to B0. Engine Emission and noise test showed 9-12% higher NO, 24-42% lower HC, 19-40% lower CO and 2-7% lower noise Emission for MB blends compared to B0. Besides, comparable engine performance and Emission characteristics were found for MB10 and MB20 compared to PB10 and PB20 respectively.

Su Han Park - One of the best experts on this subject based on the ideXlab platform.

  • influence of the mixture of gasoline and diesel fuels on droplet atomization combustion and Exhaust Emission characteristics in a compression ignition engine
    Fuel Processing Technology, 2013
    Co-Authors: Su Han Park, In Mo Youn, Yunsung Lim, Chang Sik Lee
    Abstract:

    Abstract The purpose of this study was to investigate the fuel properties, droplet atomization, combustion performance, and Exhaust Emission characteristics of gasoline–diesel direct blended fuels in a four-cylinder diesel engine. The gasoline fuel was blended as a volumetric fraction of conventional diesel fuel. The droplet size of test fuels was measured using a phase Doppler particle analyzer (PDPA), and the combustion and Emission characteristics were investigated for a four-cylinder diesel engine with a common-rail injection system and Emission analyzer. In this study we found that increasing the gasoline volume fraction decreased the fuel density, kinematic viscosity, and surface tension. The temperature for 10% distillation (T10) decreased as the gasoline fraction increased. The blending of gasoline caused a decrease in droplet size by increasing the small droplets and decreasing the large droplets because the surface tension decreased with the addition gasoline fuel, thereby inducing an increase in droplet instability. On the other hand, gasoline blending resulted in an extension of the ignition delay and the formation of a more homogeneous mixture. These combustion characteristics caused the simultaneous reduction of ISNOx and ISsoot. However, the ISHC and ISCO Emissions were slightly increased. The difference in ISHC and ISCO Emissions between pure diesel and gasoline blended diesel fuels decreased as the engine load increased. An increase in engine load diminished the effects of gasoline blending on combustion performance and Exhaust Emissions.

  • influence of ethanol blends on the combustion performance and Exhaust Emission characteristics of a four cylinder diesel engine at various engine loads and injection timings
    Fuel, 2011
    Co-Authors: Su Han Park, In Mo Youn, Chang Sik Lee
    Abstract:

    The aim of this work is to investigate the effect of ethanol blending to diesel fuel on the combustion and Exhaust Emission characteristics of a four-cylinder diesel engine with a common-rail injection system. The overall spray characteristics, such as the spray tip penetration and the spray cone angle, were studied with respect to the ethanol blending ratio. A spray visualization system and a four-cylinder diesel engine equipped with a combustion and Emission analyzer were utilized so as to analyze the spray and Exhaust Emission characteristics of the ethanol blending diesel fuel. Ethanol blended diesel fuel has a shorter spray tip penetration when compared to pure diesel fuel. In addition, the spray cone angle of ethanol blended fuels is larger. It is believed that the lower fuel density of ethanol blended fuels affects the spray characteristics. When the ethanol blended fuels are injected around top dead center (TDC), they exhibit unstable ignition characteristics because the higher ethanol blending ratio causes a long ignition delay. An advance in the injection timing also induces an increase in the combustion pressure due to the sufficient premixed duration. In a four-cylinder diesel engine, an increase in the ethanol blending ratio leads to a decrease in NOx Emissions due to the high heat of evaporation of ethanol fuel, however, CO and HC Emissions increase. In addition, the CO and HC Emissions exhibit a decreasing trend according to an increase in the engine load and an advance in the injection timing.

  • effects of bioethanol blended diesel fuel on combustion and Emission reduction characteristics in a direct injection diesel engine with Exhaust gas recirculation egr
    Energy & Fuels, 2010
    Co-Authors: Su Han Park, Junepyo Cha, Chang Sik Lee
    Abstract:

    The aim of this investigation is to clarify the effects of bioethanol on the combustion and Exhaust Emission characteristics, as well as the spray and atomization characteristics of bioethanol−diesel blended fuels in a single-cylinder diesel engine. The spray and Exhaust Emission characteristics are analyzed using the spray visualization system, the droplet analysis measuring system, and the single-cylinder diesel engine with an Exhaust Emission analyzer. In addition, the effects of Exhaust gas recirculation (EGR) on the Emission characteristics are also investigated. In the analysis of the experimental results for the spray characteristics, it revealed that the spray tip penetration of bioethanol-blended diesel fuel shows almost similar behavior compared to a pure diesel fuel and the blended fuels show a wide spray cone angle, before the impingement to the piston bowl wall. In the case of the bioethanol blends, the mean reduction percentage of the droplet size increases as the bioethanol blending ratio i...

H H Masjuki - One of the best experts on this subject based on the ideXlab platform.

  • evaluation of the engine performance and Exhaust Emissions of biodiesel bioethanol diesel blends using kernel based extreme learning machine
    Energy, 2018
    Co-Authors: Arridina Susan Silitonga, H H Masjuki, Hwai Chyuan Ong, A H Sebayang, S Dharma, F Kusumo, Joko Siswantoro, Jassinnee Milano, Khairil Daud
    Abstract:

    It is known that biodiesel and bioethanol are viable alternative fuels to replace diesel for compression ignition engines. In this study, an experimental investigation is carried out to evaluate the performance and Exhaust Emissions of a single cylinder diesel engine fuelled with biodiesel-bioethanol-diesel blends. The engine performance parameters evaluated are the brake specific fuel consumption and brake thermal efficiency whereas the Exhaust Emission parameters evaluated are carbon monoxide, nitrogen oxide, and smoke opacity. Kernel-based extreme learning machine is used to predict the engine performance and Exhaust Emission parameters of the fuel blends at full throttle conditions. Based on the experimental results, the brake specific fuel consumption is lower while the brake thermal efficiency is higher for the biodiesel-bioethanol-diesel blends. The carbon monoxide Emissions and smoke opacity are also lower for these fuel blends. The mean absolute percentage error of the brake specific fuel consumption, brake thermal efficiency, carbon monoxide, nitrogen oxide, and smoke opacity is 1.363, 1.482, 4.597, 2.224, and 2.090%, respectively. Thus, it can be concluded that K-ELM is a reliable method to estimate the engine performance and Exhaust Emission parameters of a single cylinder compression ignition engine fuelled with biodiesel-bioethanol-diesel blends to reduce fuel consumption and Exhaust Emissions.

  • engine combustion performance and Emission characteristics of gas to liquid gtl fuels and its blends with diesel and bio diesel
    Renewable & Sustainable Energy Reviews, 2014
    Co-Authors: H Sajjad, H H Masjuki, M Varman, M I Arbab, S Imtenan, S Ashrafur M Rahman
    Abstract:

    Crude oil price hikes, energy security concerns and environmental drivers have turned the focus to alternative fuels. Gas to liquid (GTL) diesel is regarded as a promising alternative diesel fuel, considering the adeptness to use directly as a diesel fuel or in blends with petroleum-derived diesel or bio-diesel. GTL fuel derived from Fischer–Tropsch synthesis is of distinctly different characteristics than fossil diesel fuel due to its paraffinic nature, virtually zero sulfur, low aromatic contents and very high cetane number. GTL fuel is referred to as a “clean fuel” for its inherent ability to reduce engine Exhaust Emission even with blends of diesel and bio-diesel.

  • engine combustion performance and Emission characteristics of gas to liquid gtl fuels and its blends with diesel and bio diesel
    Renewable & Sustainable Energy Reviews, 2014
    Co-Authors: H Sajjad, M A Kalam, H H Masjuki, M Varman, M I Arbab, S Imtenan, S Ashrafur M Rahman
    Abstract:

    Crude oil price hikes, energy security concerns and environmental drivers have turned the focus to alternative fuels. Gas to liquid (GTL) diesel is regarded as a promising alternative diesel fuel, considering the adeptness to use directly as a diesel fuel or in blends with petroleum-derived diesel or bio-diesel. GTL fuel derived from Fischer–Tropsch synthesis is of distinctly different characteristics than fossil diesel fuel due to its paraffinic nature, virtually zero sulfur, low aromatic contents and very high cetane number. GTL fuel is referred to as a “clean fuel” for its inherent ability to reduce engine Exhaust Emission even with blends of diesel and bio-diesel. This paper illustrates feasibility of GTL fuel in context of comparative fuel properties with conventional diesel and bio-diesels. This review also describes the technical attributes of GTL and its blends with diesel and bio-diesel focusing their impact on engine performance and Emission characteristics on the basis of the previous research works. It can introduce an efficacious guideline to devise several blends of alternative fuels, further the development of engine performance and constrain Exhaust Emission to cope with the relentless efforts to manufacture efficient and environment friendly powertrains.

  • experimental investigation of mustard biodiesel blend properties performance Exhaust Emission and noise in an unmodified diesel engine
    APCBEE Procedia, 2014
    Co-Authors: A Sanjid, M A Kalam, H H Masjuki, M J Abedin, S Ashrafur M Rahman
    Abstract:

    Abstract Mustard biodiesel was produced from waste mustard oil and physicochemical properties were investigated. MB showed superior calorific value (40.404 MJ/kg), oxidation stability (15.92 h), cloud point (5 °C) and pour point (-18 °C) than any other conventional biodiesels. During engine performance test MB10 and MB20 showed 8-13% higher BSFC and 5-6% lower BTE compared to B0. By contrast, MB blends produced 7-8% less BP and 6-8% less engine torque compared to B0. Engine Emission and noise test showed 9-12% higher NO, 24-42% lower HC, 19-40% lower CO and 2-7% lower noise Emission for MB blends compared to B0. Besides, comparable engine performance and Emission characteristics were found for MB10 and MB20 compared to PB10 and PB20 respectively.

  • Exhaust Emission and combustion evaluation of coconut oil powered indirect injection diesel engine
    Renewable Energy, 2003
    Co-Authors: M A Kalam, M Husnawan, H H Masjuki
    Abstract:

    This paper presents the results of experimental work carried out to evaluate the Exhaust Emissions characteristics of ordinary Malaysian coconut oil (COCO) blended with conventional diesel oil (OD) fueled in a diesel engine. This project complies with Malaysian Government strategy on biofuel research activity. The results showed that the addition of 30% COCO with OD produced higher brake power and net heat release rate with a net reduction in Exhaust Emissions such as HC, NOx, CO, smoke and polycyclic aromatic hydrocarbon (PAH). Above 30% COCO blends, such as 40 and 50% COCO blends, developed lower brake power and net heat release rate were noted due to the fuels lower calorific value; nevertheless, reduced Emissions were still noted.

H Sajjad - One of the best experts on this subject based on the ideXlab platform.

  • engine combustion performance and Emission characteristics of gas to liquid gtl fuels and its blends with diesel and bio diesel
    Renewable & Sustainable Energy Reviews, 2014
    Co-Authors: H Sajjad, M A Kalam, H H Masjuki, M Varman, M I Arbab, S Imtenan, S Ashrafur M Rahman
    Abstract:

    Crude oil price hikes, energy security concerns and environmental drivers have turned the focus to alternative fuels. Gas to liquid (GTL) diesel is regarded as a promising alternative diesel fuel, considering the adeptness to use directly as a diesel fuel or in blends with petroleum-derived diesel or bio-diesel. GTL fuel derived from Fischer–Tropsch synthesis is of distinctly different characteristics than fossil diesel fuel due to its paraffinic nature, virtually zero sulfur, low aromatic contents and very high cetane number. GTL fuel is referred to as a “clean fuel” for its inherent ability to reduce engine Exhaust Emission even with blends of diesel and bio-diesel. This paper illustrates feasibility of GTL fuel in context of comparative fuel properties with conventional diesel and bio-diesels. This review also describes the technical attributes of GTL and its blends with diesel and bio-diesel focusing their impact on engine performance and Emission characteristics on the basis of the previous research works. It can introduce an efficacious guideline to devise several blends of alternative fuels, further the development of engine performance and constrain Exhaust Emission to cope with the relentless efforts to manufacture efficient and environment friendly powertrains.

  • engine combustion performance and Emission characteristics of gas to liquid gtl fuels and its blends with diesel and bio diesel
    Renewable & Sustainable Energy Reviews, 2014
    Co-Authors: H Sajjad, H H Masjuki, M Varman, M I Arbab, S Imtenan, S Ashrafur M Rahman
    Abstract:

    Crude oil price hikes, energy security concerns and environmental drivers have turned the focus to alternative fuels. Gas to liquid (GTL) diesel is regarded as a promising alternative diesel fuel, considering the adeptness to use directly as a diesel fuel or in blends with petroleum-derived diesel or bio-diesel. GTL fuel derived from Fischer–Tropsch synthesis is of distinctly different characteristics than fossil diesel fuel due to its paraffinic nature, virtually zero sulfur, low aromatic contents and very high cetane number. GTL fuel is referred to as a “clean fuel” for its inherent ability to reduce engine Exhaust Emission even with blends of diesel and bio-diesel.