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18 results on '"diesel engine."'

1. Effect the Addition of Biodiesel from Nyamplung Oil (Calophyllum Inophyllum) on Performance and Emission Characteristics of Diesel Engines

Author

Abdul Hamid, Amin Jakfar, Saiful Saiful, Ike Dayi Febriana, and Faizatur Rohmah

Subjects
biodiesel, nyamplung oil, performance, emission, diesel engine., Chemistry, QD1-999
Abstract

In this study, the use of biodiesel from nyamplung oil (Calophyllum Inophyllum) was studied through a transesterification reaction using a heterogeneous catalyst of CaO from limestone originating from Pamekasan, Madura. The composition ratio used between nyamplung oil and methanol in the transesterification reaction was 1:12 (mol/mol) with the addition of 4% CaO catalyst. The biodiesel that is formed is then tested for its performance and emission characteristics in diesel engines with various fuel mixtures between pure diesel and biodiesel (B-10, B-20, B-30, B-40, B-100 and S-100). The test results for biodiesel blends with the highest power produced from B-10, B-20, B-30 and B-100 fuels were 0.26 kW each at a load of 250 watts. While at a load of 500 watts, the highest power is obtained from the B-40 fuel, which is 0.58 kW. The results of performance testing using S-100 fuel obtained the highest power values ​​of 0.27 and 0.58 kW, respectively, with a load of 250 and 500 watts. Performance testing for biodiesel blends, the highest torque value was obtained when using B-10, B-20, B-30 and B-100 fuels, which were 1.65 N.m each with a load of 250 watts. While at a load of 500 watts, the highest torque is obtained on B-40 fuel, which is 3.69 N.m. The fuel S-100 produces torque of 1.71 and 3.69 N.m, respectively, with a load of 250 and 500 watts. Emission gases characteristics of carbon monoxide (CO), nitrogen monoxide (NO) and nitrogen oxides (NOx) showed the lowest concentrations obtained in B-100 fuel were 387 ppm, 92 ppm and 96 ppm, respectively. Meanwhile, the highest concentrations of CO, NO and NOx emissions were produced from pure diesel fuel (S-100), namely 574 ppm, 126 ppm and 132 ppm, respectively.

Published
2022
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2. Efek Kandungan Minyak Jarak pada Bahan Bakar Solar terhadap Konsumsi Bahan Bakar dan Emisi Jelaga Mesin Diesel

Author

Syarifudin Syarifudin and Firman Lukman Sanjaya

Subjects
castor oil, fuel consumption, soot emission, diesel engine., Mechanical engineering and machinery, TJ1-1570
Abstract

Castor oil is an alternative fuel as a substitute for diesel fuel. The property that approaches diesel fuel makes jatropha oil help reduce fossil fuel dependence. Abundant raw materials and high cetane properties make castor oil widely used as fuel in diesel engines. This study aims to observe the consumption of fuel and soot emissions produced by diesel engines using a mixture of diesel fuel with castor oil content of 30%. Based on the results of experiments that have been carried out, fuel consumption and soot emissions have increased. The highest increase occurred in SJ30 fuel at 25% loading. Low heating value is a major cause of increased consumption and soot emissions.

Published
2020
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3. A SEMI-EMPIRICAL MODEL TO PREDICT DIESEL ENGINE COMBUSTION PARAMETERS

Author

B. Ghobadian, G. Najafi, and M. Nayebi

Subjects
Cylinder pressure model, parameters of engine, diesel engine., Mechanical engineering and machinery, TJ1-1570, Mechanics of engineering. Applied mechanics, TA349-359
Abstract

To carry out the investigation, a cylinder pressure model was developed based on the position of the crankshaft, engine load, engine speed, and fuel injection time. This model takes into account the maximum number of parameters involved. The accuracy of the model was verified by experimental results. The average error of the cylinder pressure, the average radical of the square of the error of the cylinder pressure, and the average error of maximum pressure were calculated at 1.85%, 3.32, and 0.66% (of maximum pressure), respectively. This model was compared with the model by Conolly and Yagle; the two models are similar in terms of the pressure relating the square of time and the exponential of time. This model appears applicable to other diesel engines. The results of the equation and experimental results were compared and described by a Fourier series, which is indicative of the cylinder pressure level between them.

Published
2013

4. INFLUENCE OF PALM METHYL ESTER (PME) AS AN ALTERNATIVE FUEL IN MULTICYLINDER DIESEL ENGINE

Author

Mohd Hafizil M. Yasin, R. Mamat, K.V. Sharma, and Ahmad Fitri Yusop

Subjects
Palm methyl ester (PME), engine performance, combustion characteristics, diesel engine., Mechanical engineering and machinery, TJ1-1570, Mechanics of engineering. Applied mechanics, TA349-359
Abstract

Palm oil is one of the vegetable oil, which is converted to biodiesel through a transesterification process using methanol as the catalyst. Palm oil biodiesel or palm methyl ester (PME) can be used in diesel engines without any modification, and can be blended with conventional diesel to produce different proportions of PME-diesel blend fuels. The physical properties of PME were evaluated experimentally and theoretically. The effect of using neat PME as fuel on engine performance and emissions was evaluated using a commercial four-cylinder four-stroke IDI diesel engine. The experimental results on an engine operated with PME exhibited higher brake specific fuel consumption in comparison with the conventional fuel. With respect to the in-cylinder pressure and heat release rate, these increased features by over 8.11% and 9.3% with PME compared to conventional diesel. The overall results show that PME surpassed the diesel combustion quality due to its psychochemical properties and higher oxygen content.

Published
2012

5. Comparative Overview of Marine Fuel Quality on Diesel Engine Operation.

Author

Zamiatina, Nadežda

Subjects
MARINE diesel motors, DIESEL fuels, MATHEMATICAL models, FUEL consumption in marine engines, EMISSION control
Abstract

Publication devoted to the problem of translation of ship propulsion plant to low-sulfur fuel grades regulated by new International Maritime Organization (IMO) standards. Study and optimization of the physicochemical properties of marine fuels are important components in the work in order to improve energy efficiency and reduce toxic emissions from marine diesel engines. In the article gives the comparative analysis of standards of marine fuels. Using mathematical modeling, established variational indicated process characteristics of the diesel engine by simulating engine work in a wide range of fuels. As the object of the study was used diesel fuel, residual fuel, ethanol, RME and LNG. The aim of this work is to assess the impact of a number of properties of the fuel, in particular elemental chemical composition and calorific value to the energy performance of the working process of the diesel engine. Assessment carried out for the two cases of the diesel engine: the same cycle fuel delivery and implementations of the same indicated work, which is estimated at indicated pressure. The simulation results show that under the conditions of equal cyclic fuel supply differences indicated efficiency for different fuel are in the range 0.04–5%. [ABSTRACT FROM AUTHOR]

Published
2016
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6. Comparative Study on Biodiesel-methanol-diesel Low Proportion Blends Operating with a Diesel Engine.

Author

Yasin, Mohd Hafizil Mat, Mamat, Rizalman, Yusop, Ahmad Fitri, Aziz, Amir, and Najafi, Gholamhassan

Abstract

In this study, biodiesel (20%)-methanol (5%)-diesel (75%), biodiesel (20%)-methanol (10%)-diesel (70%), biodiesel (20%)- diesel (80%), and standard mineral diesel as a baseline fuel are tested in a multi-cylinder diesel engine. Those biodiesel-alcohol low proportion blends are investigated under the same operating conditions at 20%, 40% and 60% of engine loads to determine the engine performance and emission of the diesel engine. Overall, biodiesel-methanol-diesel blends show higher brake specific fuel consumption than mineral diesel. As methanol proportions in blends increase, NO emissions increase, while CO emissions are reduced. Also, biodiesel-diesel blend with 5% of methanol is more effective than biodiesel blend with 20% for reducing CO emissions. [ABSTRACT FROM AUTHOR]

Published
2015
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7. Waste Heat Recovery from Exhaust of a Diesel Generator Set Using Organic Fluids.

Author

Hossain, Shekh Nisar and Bari, Saiful

Subjects
HEAT recovery, DIESEL electric power-plants, RANKINE cycle, HEAT exchangers, WORKING fluids
Abstract

Heat available in the exhaust gas of a diesel engine can be an important heat source to provide additional power using separate Rankine Cycle (RC). In this current work, experiments were conducted to measure the available exhaust heat from a 40 kW diesel engine generator set. Performance of an available shell and tube heat exchanger using water as the working fluid was conducted. With the available experimental data, computer simulation was carried out to optimize the design of the heat exchanger. This optimized heat exchanger was then used to estimate additional power considering actual turbine efficiency. Two heat exchangers were used for this purpose. One is used to generate vapour and the other to generate super-heated vapour. Two organic fluids namely Ammonia and HFC-134a were used in this study. The water was also used as working fluid to compare the results. The proposed heat exchanger can produce 10%, 9% and 8% additional power by using water, ammonia and HFC-134a as the working fluids respectively. [ABSTRACT FROM AUTHOR]

Published
2014
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8. Effect of Combustion Chamber Design on a DI Diesel Engine Fuelled with Jatropha Methyl Esters Blends with Diesel.

Author

Mamilla, Venkata Ramesh, Mallikarjun, M.V., and Lakshmi Narayana Rao, G.

Subjects
COMBUSTION chambers -- Design & construction, DIESEL fuels, JATROPHA, METHYL formate, MIXING, FOUR-stroke cycle engines, NITROGEN oxides
Abstract

Abstract: In this paper a single cylinder constant speed air-cooled four-stroke direct injection diesel engine of 4.4kW is selected for the experimental investigations to evaluate the performance and emission characteristics fuelled with Jatropha oil (JTME), and its blends (20%, 40%, 60%, 80% and 100%). The performance parameters are analyzed include Brake thermal efficiency whereas exhaust emissions include oxides of nitrogen, HC, Smoke and CO. The results of the experiment in each case were compared with baseline data of diesel fuel. It concluded that lower blend of biodiesel 20% JTME act as best alternative fuel among all tested fuel at full load condition. The experimental investigations on the effect of 20% Jatropha methyl esters (JTME) with diesel on performance, combustion and emission characteristics of diesel engine with different combustion chamber geometries (Spherical, toroidal and Re-entrant).Brake thermal efficiency for toroidal combustion chamber was found higher than that of other two combustion chambers. Smoke density, carbon monoxide and hydrocarbons was observed slightly lower for toroidal combustion chamber compared to the other two but those are lower when compared with standard diesel (SCC). However, nitrogen oxides were slightly lower for toroidal combustion chamber compared to the other two but it is higher when compared with standard diesel (SCC). [Copyright &y& Elsevier]

Published
2013
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9. Experimental study of a flow into an engine cylinder using PIV

Author

Davario, Alessandro, Di Lella, Vincenzo, Davario, Alessandro, and Di Lella, Vincenzo

Abstract

This degree project is focused on the study of the tumble and the swirlmotions, which develop during the intake stroke, inside a cylinder of a Dieselengine.Nowadays, the reduction of fuel consumption and emissions is a primaryaspect for automotive companies, including Scania. Then, an efficient combustionprocess is required, and a fundamental role is played by tumble andswirl motion.These motions have been studied by means of the Particle Image Velocimetry(PIV) technique. In particular, two different cylinder head designshave been investigated, focusing on the structures present in the flow andtheir evolutions inside the cylinder. Finally, these results have been comparedwith LES results, in order to validate the latest. Analysing the swirl motion, it has been possible to identify three mainregions, along the cylinder, characterized by different vortex structures. Inaddition, the velocity field into the entire cylinder volume has been extractedby means of a three-dimensional three-component reconstruction.

Published
2017

10. Implementation of a test bench for a single-cylinder diesel engine with investigative applications.

Author

Narváez Pallares, Hugo, Villareal Acosta, Simon, Duarte Forero, Jorge Eliécer, Rincón Montenegro, Adriana, Narváez Pallares, Hugo, Villareal Acosta, Simon, Duarte Forero, Jorge Eliécer, and Rincón Montenegro, Adriana

Abstract

this document describes necessaries guidelines on design of a test bench for a four-stroke single-cylinder Diesel engine and then the selection of processes implemented for its building. During design, ergonomics and safety were considered the most relevant aspects to make a bench adaptable and reliable to the operator while it works, where studies were reviewed in order to adjust coherently bench dimensions based on anthropometrics parameters and conditions for protection guards. After sizing, systems and subsystems, that generate significant effects on structural elements, were validated by load simulations. Building was based on esthetics, materials availability and manufacturing processes easily accessible on market that would offer high quality at low cost. It was concluded that after building, installation and tuned up based on obtained results by tests, bench worked in good conditions, Este documento describe los criterios fundamentales en el diseño de un banco de pruebas para un motor Diésel monocilíndrico cuatro tiempos y posteriormente la selección de los procesos implementados para su construcción. En la fase de diseño, la ergonomía y la seguridad fueron consideradas como los factores de mayor relevancia para garantizar un banco flexible y confiable para el operario durante su funcionamiento, donde se revisaron estudios que permitieron ajustar de forma coherente las dimensiones del banco en función a parámetros antropométricos y a condiciones para guardas de protección. Posteriormente, los sistemas y subsistemas del banco (que generan efectos significativos sobre los elementos estructurales) fueron validados por medio de simulaciones de cargas. La construcción se fundamentó en la estética, disponibilidad de materiales y procesos de manufactura de fácil acceso en el mercado que ofrecieran alta calidad a bajo costo. Se concluyó que luego de la construcción, instalación y puesta a punto en base a los resultados obtenidos por las pruebas, el banco operó en muy buenas condiciones.

Published
2017

11. Dvoudobé vznětové letecké motory

Author

Drápal, Lubomír, Svída, David, Pochop, Ladislav, Drápal, Lubomír, Svída, David, and Pochop, Ladislav

Abstract

Tato bakalářská práce je pojednáním o dvoudobých vznětových leteckých motorech. Popisuje princip funkce dvoudobého vznětového motoru, jeho odlišnosti od motoru čtyřdobého a motoru zážehového. Dále se zabývá historickým vývojem dvoudobých vznětových leteckých motorů v kontextu s vývojem pístových leteckých motorů obecně. Uvádí nejznámější dvoudobé vznětové letecké motory a nastiňuje možný vývoj tohoto typu motorů v blízké budoucnosti., This thesis is a treatise on two-stroke diesel aircraft engines. Describes the principle functions of two-stroke diesel engine, its differences from the four-stroke engine and petrol engine. It also deals with the historical development of two-stroke diesel aircraft engines in the context of the development of piston aircraft engines in general. Indicates the best-known two-stroke diesel aircraft engines and outlines possible development of this type of engines in the near future.

12. Dvoudobé vznětové letecké motory

Author

Drápal, Lubomír, Svída, David, Pochop, Ladislav, Drápal, Lubomír, Svída, David, and Pochop, Ladislav

Abstract

Tato bakalářská práce je pojednáním o dvoudobých vznětových leteckých motorech. Popisuje princip funkce dvoudobého vznětového motoru, jeho odlišnosti od motoru čtyřdobého a motoru zážehového. Dále se zabývá historickým vývojem dvoudobých vznětových leteckých motorů v kontextu s vývojem pístových leteckých motorů obecně. Uvádí nejznámější dvoudobé vznětové letecké motory a nastiňuje možný vývoj tohoto typu motorů v blízké budoucnosti., This thesis is a treatise on two-stroke diesel aircraft engines. Describes the principle functions of two-stroke diesel engine, its differences from the four-stroke engine and petrol engine. It also deals with the historical development of two-stroke diesel aircraft engines in the context of the development of piston aircraft engines in general. Indicates the best-known two-stroke diesel aircraft engines and outlines possible development of this type of engines in the near future.

13. Dvoudobé vznětové letecké motory

Author

Drápal, Lubomír, Svída, David, Pochop, Ladislav, Drápal, Lubomír, Svída, David, and Pochop, Ladislav

Abstract

Tato bakalářská práce je pojednáním o dvoudobých vznětových leteckých motorech. Popisuje princip funkce dvoudobého vznětového motoru, jeho odlišnosti od motoru čtyřdobého a motoru zážehového. Dále se zabývá historickým vývojem dvoudobých vznětových leteckých motorů v kontextu s vývojem pístových leteckých motorů obecně. Uvádí nejznámější dvoudobé vznětové letecké motory a nastiňuje možný vývoj tohoto typu motorů v blízké budoucnosti., This thesis is a treatise on two-stroke diesel aircraft engines. Describes the principle functions of two-stroke diesel engine, its differences from the four-stroke engine and petrol engine. It also deals with the historical development of two-stroke diesel aircraft engines in the context of the development of piston aircraft engines in general. Indicates the best-known two-stroke diesel aircraft engines and outlines possible development of this type of engines in the near future.

14. Dvoudobé vznětové letecké motory

Author

Drápal, Lubomír, Svída, David, Drápal, Lubomír, and Svída, David

Abstract

Tato bakalářská práce je pojednáním o dvoudobých vznětových leteckých motorech. Popisuje princip funkce dvoudobého vznětového motoru, jeho odlišnosti od motoru čtyřdobého a motoru zážehového. Dále se zabývá historickým vývojem dvoudobých vznětových leteckých motorů v kontextu s vývojem pístových leteckých motorů obecně. Uvádí nejznámější dvoudobé vznětové letecké motory a nastiňuje možný vývoj tohoto typu motorů v blízké budoucnosti., This thesis is a treatise on two-stroke diesel aircraft engines. Describes the principle functions of two-stroke diesel engine, its differences from the four-stroke engine and petrol engine. It also deals with the historical development of two-stroke diesel aircraft engines in the context of the development of piston aircraft engines in general. Indicates the best-known two-stroke diesel aircraft engines and outlines possible development of this type of engines in the near future.

15. Dvoudobé vznětové letecké motory

Author

Drápal, Lubomír, Svída, David, Drápal, Lubomír, and Svída, David

Abstract

Tato bakalářská práce je pojednáním o dvoudobých vznětových leteckých motorech. Popisuje princip funkce dvoudobého vznětového motoru, jeho odlišnosti od motoru čtyřdobého a motoru zážehového. Dále se zabývá historickým vývojem dvoudobých vznětových leteckých motorů v kontextu s vývojem pístových leteckých motorů obecně. Uvádí nejznámější dvoudobé vznětové letecké motory a nastiňuje možný vývoj tohoto typu motorů v blízké budoucnosti., This thesis is a treatise on two-stroke diesel aircraft engines. Describes the principle functions of two-stroke diesel engine, its differences from the four-stroke engine and petrol engine. It also deals with the historical development of two-stroke diesel aircraft engines in the context of the development of piston aircraft engines in general. Indicates the best-known two-stroke diesel aircraft engines and outlines possible development of this type of engines in the near future.

16. Dvoudobé vznětové letecké motory

Author

Drápal, Lubomír, Svída, David, Drápal, Lubomír, and Svída, David

Abstract

Tato bakalářská práce je pojednáním o dvoudobých vznětových leteckých motorech. Popisuje princip funkce dvoudobého vznětového motoru, jeho odlišnosti od motoru čtyřdobého a motoru zážehového. Dále se zabývá historickým vývojem dvoudobých vznětových leteckých motorů v kontextu s vývojem pístových leteckých motorů obecně. Uvádí nejznámější dvoudobé vznětové letecké motory a nastiňuje možný vývoj tohoto typu motorů v blízké budoucnosti., This thesis is a treatise on two-stroke diesel aircraft engines. Describes the principle functions of two-stroke diesel engine, its differences from the four-stroke engine and petrol engine. It also deals with the historical development of two-stroke diesel aircraft engines in the context of the development of piston aircraft engines in general. Indicates the best-known two-stroke diesel aircraft engines and outlines possible development of this type of engines in the near future.

17. Dvoudobé vznětové letecké motory

Author

Drápal, Lubomír, Svída, David, Drápal, Lubomír, and Svída, David

Abstract

Tato bakalářská práce je pojednáním o dvoudobých vznětových leteckých motorech. Popisuje princip funkce dvoudobého vznětového motoru, jeho odlišnosti od motoru čtyřdobého a motoru zážehového. Dále se zabývá historickým vývojem dvoudobých vznětových leteckých motorů v kontextu s vývojem pístových leteckých motorů obecně. Uvádí nejznámější dvoudobé vznětové letecké motory a nastiňuje možný vývoj tohoto typu motorů v blízké budoucnosti., This thesis is a treatise on two-stroke diesel aircraft engines. Describes the principle functions of two-stroke diesel engine, its differences from the four-stroke engine and petrol engine. It also deals with the historical development of two-stroke diesel aircraft engines in the context of the development of piston aircraft engines in general. Indicates the best-known two-stroke diesel aircraft engines and outlines possible development of this type of engines in the near future.

18. Dvoudobé vznětové letecké motory

Author

Drápal, Lubomír, Svída, David, Pochop, Ladislav, Drápal, Lubomír, Svída, David, and Pochop, Ladislav

Abstract

Tato bakalářská práce je pojednáním o dvoudobých vznětových leteckých motorech. Popisuje princip funkce dvoudobého vznětového motoru, jeho odlišnosti od motoru čtyřdobého a motoru zážehového. Dále se zabývá historickým vývojem dvoudobých vznětových leteckých motorů v kontextu s vývojem pístových leteckých motorů obecně. Uvádí nejznámější dvoudobé vznětové letecké motory a nastiňuje možný vývoj tohoto typu motorů v blízké budoucnosti., This thesis is a treatise on two-stroke diesel aircraft engines. Describes the principle functions of two-stroke diesel engine, its differences from the four-stroke engine and petrol engine. It also deals with the historical development of two-stroke diesel aircraft engines in the context of the development of piston aircraft engines in general. Indicates the best-known two-stroke diesel aircraft engines and outlines possible development of this type of engines in the near future.

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