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Air and fuel supercharge in the performance of a diesel cycle engine Ciência Rural
Farias,Marcelo Silveira de; Schlosser,José Fernando; Martini,Alfran Tellechea; Santos,Gustavo Oliveira dos; Estrada,Javier Solis.
ABSTRACT: This paper aimed to evaluate the performance of a Diesel cycle engine, changing the configurations for the air and fuel supply system. Variables analyzed were torque, power, specific fuel consumption and thermal efficiency in four different engine configurations (aspirated, aspirated + service, turbocharged + service and turbocharged). For that, there were dynamometer experiments by power take-off of an agricultural tractor. The experimental outline used was entirely randomized, in a bifatorial design with three repetitions. Results indicated that the engine supercharge, compared to its original configuration, provided a significant increase of torque and power. Only the addition of turbo does not caused a significant effect in the engine...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Agricultural tractor; Turbocharger; Injection pump; Fuel consumption.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000600352
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Cable length optimization for trawl fuel consumption reduction ArchiMer
Khaled, Ramez; Priour, Daniel; Billard, Jean-yves.
A numerical method for optimization of the cable lengths in trawls with respect to the ratio between the estimated trawl drag and the predicted catch efficiency is developed and applied. The trawl cables of interest are warps, bridles, headline and footrope. The optimization algorithm applies an ordered sequential process changing one cable length at the time. It is assumed in the predictions that the catch efficiency of the trawl is proportional with the trawl mouth area. In a case study optimizing a bottom trawl used on a research vessel by applying the new method it is predicted that it would be possible to reduce the ratio between trawl drag and catch efficiency by up to 46% by optimizing the cable lengths. Thus this would enable a considerable...
Tipo: Text Palavras-chave: Bottom trawl; Modeling; Optimization; Fuel consumption; Drag; Swept area; Mouth surface; Fish distribution.
Ano: 2013 URL: http://archimer.ifremer.fr/doc/00130/24106/22857.pdf
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Characteristics of a tractor engine using mineral and biodiesel fuels blended with rapeseed oil Scientia Agricola
Godeša,Tone; Jejčič,Viktor; Poje,Tomaž.
One of the most unfavourable characteristics of crude vegetable oil when used as the fuel is the high viscosity. To improve this weakness, oil can be blended with mineral diesel or biodiesel fuels. This study was designed to evaluate how the use of mineral diesel or biodiesel blend with cold pressed rapeseed (Brassica napus) oil affects the engine power, torque and fuel consumption. A tractor equipped with direct injection, water cooling system and three-cylinder diesel engine was used for the experiment. Fuels used were standard diesel fuel (diesel), rapeseed oil methyl ester - biodiesel (B100) and their mixtures with 10, 30 and 50 vol. % of cold pressed rapeseed oil (RO). Increased portion of RO in diesel fuel blends had almost no effect on the torque...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Diesel engine power; Torque; Fuel consumption.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162010000500003
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CHARACTERIZATION OF CONVENTIONAL COOKING STOVES IN SOUTH EASTERN NIGERIA CIGR Journal
Segun, Bello Raphael.
Abstract   Performance characterization of some selected conventional cook stoves in South Eastern Nigeria had been carried out. Three conventional cook stoves (3-stone stove, charcoal stove and sawdust stove) were selected and evaluated. Their performances were compared with those of improved stove. The results show that the time spent in cooking 1 Kg of rice/(yam) is significantly different in all the conventional stoves under test; (maximum 0.75 (0.44) kg/hr for 3-stone stove and minimum 0.61 (0.35) hr/kg for charcoal). Fuel utilization also differs for instance lesser quantity of charcoal would be required to cook the same quantity of food on the charcoal stove than the open fire stove. Also the specific fuel consumption value of charcoal stove is...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Wood products & Machinery Cook stove; Fuel consumption; Thermal efficiency; Burn rate.
Ano: 2015 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3037
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Desempenho de tratores agrícolas em tração Repositório Alice
SERRANO, J.M.P.R..
O objetivo deste trabalho foi avaliar o desempenho de tratores agrícolas e implementos em trabalhos de tração. Procurou-se estabelecer e validar modelos de previsão relativos ao esforço de tração requerido pela grade de discos offset de arrasto e relativos ao consumo de combustível do trator. É descrito o sistema de aquisição de dados desenvolvido para utilização em ensaios de campo, em condições reais de trabalho. Os parâmetros medidos foram: o regime do motor, a velocidade teórica e a velocidade real de avanço, o consumo horário de combustível e a força de tração na barra. Também foram realizados testes dos tratores com um freio dinamométrico ligado à tomada de potência. Os resultados de um projeto de pesquisa de três anos foram usados para estabelecer...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Mecanização; Instrumentação; Previsão do esforço; Consumo de combustível; Mechanization; Instrumentation; Drawbar pull prediction; Fuel consumption.
Ano: 2007 URL: http://www.alice.cnptia.embrapa.br/handle/doc/122776
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Effect of cereal stubble management on the combine harvester performance and energy requirements CIGR Journal
Jokiniemi, Heikki Tapani.
Combine harvesting is one of the most energy consuming field operations in arable farming. The power demand of combine harvester depends strongly on the mass flow through the machine, and one approach to reduce the energy consumption is thus increasing the stubble height in harvesting. In this study, the energy saving possibilities by increased stubble height and different straw management in cereal harvesting were examined. In addition to combine harvesting, the mulching of the tall stubble with a tractor powered rotary mower after the harvest was investigated. The results indicated an energy saving of 22%–24% in combine harvesting of spring wheat “Quarna” when the stubble height was increased from 13 cm to 35 cm, and 17% with 13 cm stubble when the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Combine harvesting; Cereal; Stubble height; Energy; Fuel consumption; Stubble mulching.
Ano: 2015 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3360
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Energetic efficiency of an agricultural tractor in function of tire inflation pressure REA
Monteiro,Leonardo de A.; Albiero,Daniel; Lanças,Kleber P.; Bueno,André V.; Masiero,Fabricio C..
The tire inflation pressure, among other factors, determines the efficiency in which a tractor can exert traction. It was studied the effect of using two tire inflation pressures, 110.4 kPa in the front and rear wheels, 124.2 kPa in the front wheel and 138 kPa in the rear wheels, the energetic efficiency of an agricultural tractor of 147 kW of engine power, in the displacement speed of 6.0 km.h-1, on track with firm surface, with the tractor engine speed of 2000 rpm. For each condition of the tire pressure, the tested tractor was subjected to constant forces in the drawbar of 45 kN and 50 kN, covering 30 meters. It was used a randomized complete block with a 2x2 factorial arrangement (tire pressure and drawbar power) with four replications, totaling 16...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fuel consumption; Slippage; Traction test.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162013000400015
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ENERGY PERFORMANCE IN DISC HARROWING OPERATION IN DIFFERENT GRADIENTS AND GAUGES REA
Oiole,Yasser A.; Kmiecik,Leonardo L.; Parize,Guilherme L.; Silva,Thiago X. da; Jasper,Samir P..
ABSTRACT The operational performance of the agricultural tractor can be increased by adjusting parameters such as tire inflation pressure, axle mass distribution and gauge opening, which is a very divergent factor in controlled-traffic production. The objective of the experiment was to measure the energy performance of a 93 kW agricultural tractor in intermediate grading operation in two slopes (flat and sloping) and three gauge configurations (closed, intermediate and open) in mobilized soil. Energy performance was determined from the following parameters: slip, engine speed, actual effective speed, hourly and specific fuel consumption; strength, power and performance on the drawbar. Turbo pressure and temperature monitoring was also performed at six...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fuel consumption; Operating yield; Controlled trafic.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162019000600769
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Fuel consumption models of MF285 tractor under various field conditions CIGR Journal
Almaliki, Salim; Alimardani, Reza; Omid, Mahmoud.
Due to the ascending importance of energy in the world, prediction and optimization of Fuel Consumption (FC) in agricultural tasks is merit to consideration. In this study a Massey Ferguson (MF285) tractor was implemented with a low cost and precise data acquisition system as a means to record and monitor the affectual parameters on FC such as forward speed and instant fuel flow rate during field operation. Field experiments were carried out in the experimental farm of Agricultural Engineering Department of Tehran University, Karaj province, Iran, which had loamy soil texture. A mouldboard plow was used as tillage toll during the experiments at various tillage depths, engine speeds, forward speeds, tire inflation pressures, moisture contents and cone...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fuel consumption; Massey Ferguson (MF285); Modelling; Data logging system.
Ano: 2016 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3776
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Fuel consumption of some tractor models for ploughing operations in the sandy-loam soil of Nigeria at various speeds and ploughing depths CIGR Journal
Adewoyin, Adewale Olaniyi; Ajav, Emmanuel Atoo.
Tractors acquired in Oyo State-Nigeria are primarily utilized for ploughing operations which represents the most costly single item in the budget of an arable farmer.  Tractor fuel consumption constitutes a significant parameter that affects tractors performances for ploughing operations.  The effect of ploughing speed and depth on tractors fuel consumption was therefore examined in a bid to establish their optimum operating conditions.  The soil characteristics of the study site were determined using laboratory tests.  Ploughing operations, using ASABE standard D497.5, were carried out on 100×500 m research farmland using Massey Ferguson (MF 435, 100 hp), Fiat (F130D, 100 hp) and Steyr(CVT170, 100 hp) tractors that were purchased in 2009.  Field...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Agricultural Engineering; Farm Power and Machinery Tractor performance; Soil types; Ploughing depth; Ploughing speed; Fuel consumption.
Ano: 2013 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/2466
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K-NEAREST NEIGHBORS METHOD FOR PREDICTION OF FUEL CONSUMPTION IN TRACTOR-CHISEL PLOW SYSTEMS REA
Al-Dosary,Naji Mordi Naji; Al-Hamed,Saad Abdulrahman; Aboukarima,Abdulwahed Mohamed.
ABSTRACT Most important farm operations require a significant amount of energy, and this consumes a major portion of the farm's budget. Consequently, analyzing the fuel consumption of agricultural machinery for farm operations of different sizes makes it possible to predict fuel consumption to set an appropriate budget for energy. The main purpose of this study was to determine the ability of the k-nearest neighbors (KNN) algorithm to predict the fuel consumption of tractor–chisel plow systems correctly. A training-set design of 139 points of 173 data points obtained from the literature was utilized, and the remaining 34 data points were applied as a test set. The input parameters were tractor power, plowing width, depth and speed of plowing, soil...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Machine-learning algorithms; Tillage; Prediction; K-nearest neighbors; Fuel consumption; Chisel plow.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162019000600729
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Life cycle inventory-based assessment of greenhouse gas emissions from arable-land farming systems in the Tokachi region of Hokkaido, northern Japan OAK
Koga, N.
2006年8月3日とかちプラザ・レインボーホールで開催、日本ユネスコ国内委員会主催の帯広農村開発教育国際セミナー(OASERD)国際連合ユネスコアジア太平洋地域教育開発計画事業(APEID)シンポジウム「地球にやさしい農畜産業をめざして : 温室効果ガスの発生と制御」講演資料
Palavras-chave: Arable land; Fuel consumption; Greenhouse gas; Life cycle inventory; Soil organic carbon.
Ano: 2006 URL: http://ir.obihiro.ac.jp/dspace/handle/10322/1893
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Numerical optimisation of trawls design to improve their energy efficiency ArchiMer
Priour, Daniel.
Trawls energy efficiency is greatly affected by the drag, as well as by the swept area regarding pelagic trawls and by the swept width for bottom ones. The drag results in an increase of the energy consumption and the sweeping influences the catch. In order to reduce the drag per swept area (or width) a numerical tool dedicated to the automatic optimisation of the trawl design has been developed. Based on a finite element method model for flexible netting structures, the tool modifies step by step a reference design. For each step the best-modified design, in terms of drag per swept area (or width), is kept. Such a methodology was used in two cases: which show a 43% increase in energy efficiency regarding the pelagic trawl case and 27% for the bottom trawl...
Tipo: Text Palavras-chave: Swept width; Swept area; Drag; Fuel consumption; Optimisation; Modelling; Trawl; Fishing gears.
Ano: 2009 URL: http://archimer.ifremer.fr/doc/2009/publication-6583.pdf
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Oil for Fish: An Energy Return on Investment Analysis of Selected European Union Fishing Fleets ArchiMer
Guillen, Jordi; Cheilari, Anna; Damalas, Dimitrios; Barbas, Thomas.
World food production has increased substantially in the past century, thanks mostly to the increase in the use of oil as input in the production processes. This growing use of fossil fuels has negative effects, both on the environment and the production costs. Fishing is a fuel consuming food production activity, and its energy efficiency performance has worsened over time. World-wide fisheries are also suffering from overexploitation, which contributes to the poor efficiency performance, adding more pressure and criticism on this economic activity. In this paper we analyzed the energy efficiency performance of more than 20,000 European Union (EU) fishing vessels for the period 2002-2008, using the edible energy return on investment (EROI) indicator. The...
Tipo: Text Palavras-chave: Energy efficiency; Energy return on investment (EROI); Fisheries; Fishing fleet; Fuel consumption; Industrial ecology.
Ano: 2016 URL: https://archimer.ifremer.fr/doc/00323/43459/42925.pdf
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PERFORMANCE AND EMISSION OF POLLUTANTS OF AN AGRICULTURAL ENGINE WITH TWO POWER TAKE-OFF SETTINGS REA
Schlosser,José F.; Farias,Marcelo S. de; Estrada,Javier S.; Santos,Gustavo O. dos; Gil,Emilio.
ABSTRACT Farming operations are usually performed implements driven by a power take-off (PTO) from tractors. Some manufacturers offer PTO settings named as economic (540E). Such configuration drives implements at lower tractor’s engine rotation, thus providing lower fuel consumption. An engine performance using standard (540) or 540E settings are different and poorly studied. The amounts of pollutants emitted by engines vary mainly with the applied load and rotation. The aim of this study was to compare the performance and exhaust emissions of a farming tractor engine under different PTO loads, using both standard (540) and 540E settings. Specific fuel consumption using 540E was an average 14.7% less than the standard setting. However, 540E promoted...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fuel consumption; Exhaust gases; Agricultural tractor; 540E setting.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162017000200277
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PERFORMANCE OF CORN SOWING IN FERTILIZATION SYSTEM AND INTERCROPPING REA
Cortez,Jorge W.; Furlani,Carlos E. A.; Silva,Rouverson P. da; Arcoverde,Sálvio N. S..
ABSTRACT The performance of the tractor-seeder can be influenced by factors related to the seeder, as loads and crop. The aim of the present study was to evaluate the performance of tractor-seeder at sowing in the corn crop in function of the fertilizer systems (at presowing and at sowing) and those intercropping of crops (corn + bean-Stizolobium deeringianum, corn + bean-Cajanus cajan and corn + bean-Dolichos lab lab). The experiment was carried out at FCAV-UNESP with totally randomized delineation, on factorial scheme (2x3) with four repetitions. The use of fertilization during the pre-sowing resulted in greater displacement speed and effective field capacity in the corn sowing operation, without changing the distribution of corn seeds; however, it...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Previous fertilization; Intercropping; Fuel consumption; Agricultural mechanization; Slippage.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162018000200225
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Seeder-fertilizer machine: energetic demand as a function of vegetal covering handling and manure deposition shank depth in no-tillage system REA
Grotta,Danilo C. C.; Furlani,Carlos E. A.; Silva,Rouverson P. da; Lopes,Afonso; Reis,Gustavo N. dos.
The purpose of this work was evaluating the energetic demand of a seeder-fertilizer machine as a function of the type and handling of vegetal covering culture and of the fertilizer deposition shank depth. A Valtra BM100 tractor was used implemented to pull a high precision seeder-fertilizer machine with four ranks of seeding, spaced 0.9 m for maize culture. Experiment was conducted with design in randomized blocks in factorial plots, in the Laboratory of Machines and Agricultural Mechanization experimental area (LAMMA) of UNESP-Jaboticabal, using two covering cultures (black-mucuna and crotalaria), three handlings of this covering, two mechanical (straw crusher and roller knife) and one chemical (pulverization of herbicide), performed 120 days after...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fuel consumption; Knife roller; Traction force.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162009000200007
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The effect of the operational characteristics of the tractor composite electronic measurement system by the standards of emotion on the performance of chisel plows in a clay loam soil CIGR Journal
Rahmanian- Koushkaki, Hossein; Karparvarfard, Seyyed Hossein; Mortezaei, Alireza.
A microcontroller based instrumentation package was designed, developed and mounted on an 81 kW Massey Ferguson 399 (MF-399) tractor. This package continuously measures and monitors various performance parameters of the tractor and implement. These parameters were: actual forward speed, theoretical forward speed, slip, fuel consumption and implement draft. The package comprised of four components: power supply, transducers, data acquisition, and display unit. Power was taken from the tractor battery. The data acquisition system was capable of scanning the data at 0.1 s intervals. The system performed well during the field operations and the results obtained showed that the accuracies of the transducers were acceptable.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Data acquisition; Draft; Fuel consumption; MF-399 tractor; Microcontroller.
Ano: 2015 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3029
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Towed Gear Optimisation, application to trawls ArchiMer
Roullot, Jean; Vincent, Benoit.
IFREMER has been developing and commercialising scientific software to help the conception and optimisation of any kind of trawl. This software named DynamiT makes available a "virtual flume tank" where tests can be achieved without any constraint due to scale effects or other limitation when physically testing out. DynamiT has been used numbers of times to simulate and optimise trawls by different net makers and by IFREMER. The software is based on the resolution of the mechanics (structure and hydrodynamic) equations of a model describing the actual trawl and its rigging. The "user friendly" interface allows the user to iterate "modification and observations" cycles to reach an optimised state of the fishing gear. The process can be used to reduce the...
Tipo: Text Palavras-chave: Hydrodynamic; Fuel consumption; Simulation; Model; DynamiT; Software; Fishing; Hydrodynamique; Consommation de carburant; Simulation; Modèle; DynamiT; Logiciel; Pêche.
Ano: 2006 URL: http://archimer.ifremer.fr/doc/2006/acte-4613.pdf
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Tractor perfomance as a function of speed and seeder’s tire inflation pressure Ciência Rural
Furlani,Carlos Eduardo Angeli; Cortez,Jorge Wilson; Toledo,Anderson de; Silva,Rouverson Pereira da; Grotta,Danilo Cesar Checchio; Reis,Gustavo Naves dos.
The performance of agricultural tractors under field conditions results from the interaction between tire and wheel affected by displacement speed. This work was developed to assess the performance of an agricultural tractor under different seeder's tire inflation pressure (518; 483 and 414kPa) and in two different gears providing speeds of 3.0 and 6.0km h-1. The experiment was performed at Jaboticabal Campus of São Paulo State University (UNESP). The experimental design used was entirely randomized in a 2-factor factorial design (3x2) with four replications. The draft force was influenced by the gear as well as by the required power; however, tire inflation pressure in the seeder did not change these parameters. Also, fuel consumption was influenced only...
Tipo: Info:eu-repo/semantics/article Palavras-chave: No-tillage system; Fuel consumption; Slippage.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782010000800009
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