Consumo de combustível de um trator em função do tipo de pneu, da lastragem e da velocidade de trabalho

Lopes, Afonso; Lanças, Kléber Pereira; Furlani, Carlos Eduardo Angeli; Nagaoka, Alberto Kazushi; Neto, Pedro Castro; Grotta, D. C. C.

doi:10.1590/s1415-43662003000200033

Cited by 21 publications

(20 citation statements)

References 1 publication

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The tractor in the same conditions, but with worn tires had a mean specific consumption of 651.84 g kWh -1 , showing an increase of 14.97% in specific fuel consumption in relation to the use of the tractor with metallic and water ballasts. This result is in agreement with those found by LOPES et al (2003). These authors concluded that the ballast with water (75% of the tire) offered to the tractor lower specific fuel consumption in comparison to the use of tires without water.…”

Section: -Coefficient Of Variationsupporting

confidence: 92%

“…This technical form can be used to compare engines, tractors and equipments of different sizes and shapes (LOPES et al, 2003). In Table 6, it can be observed that, at different levels of inflation pressure used in new tires, the tractor does not present variation of specific fuel consumption, as opposed to the use of worn tires, which showed variation for all indexes, where fuel consumption was lower, the higher the inflation pressure.…”

Section: -Coefficient Of Variationmentioning

confidence: 99%

“…While JESUINO (2007) found values of 8.45% and 12.73% lower for hourly consumption of fuel on track with vegetation and in a firm soil track, respectively, when diagonal worn tires were used. LOPES et al (2003) evaluated the fuel consumption of a tractor, 4x2 with front wheel assist, varying the type of tire (radial, diagonal and low pressure), combining two conditions of tractor ballasting (with and without water in the tires) and four displacement speeds. They concluded that the ballasting with water (75% of the tire volume) showed lower specific fuel consumption, and this tended to raise with the increase of tractor speed, regardless of whether the tire have ballast or not.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Fuel consumption of a tractor in function of wear, of ballasting and tire inflation pressure

et al. 2012

View full text Add to dashboard Cite

When using appropriate inflation pressures and load capacity (ballast), it may obtain a higher yield and prolongation of the life of the tire, besides it may minimize the problems of loss of traction, increased slippage and fuel consumption. This study aimed to evaluate the fuel consumption of a tractor operating with new and worn tires in three conditions of ballasting and three inflation pressures, when driving on compacted soil with vegetation cover. The experiment was conducted at the experimental unit from the Department of Animal Science, Federal University of Lavras, state of Minas Gerais, Brazil, in an agricultural soil compacted by cattle trampling and with vegetation cover. It was used a tractor 4x2 with front wheel assist, of a 65.62 kW engine power. The tires were of R1 type, diagonal (front: 12.4 to 24; and rear: 18.4 to 30), the average height of the clutches of the new tires were 0.3 and 0.35 m for front and rear tires, respectively, and for the worn tires were 0.018 and 0.0045 m, for the front and the rear tires, respectively. The results showed advantages for the tractor equipped with new tires.KEYWORDS: agricultural machinery, tractor test, tractive force. CONSUMO DE COMBUSTÍVEL DE UM TRATOR EM FUNÇÃO DO DESGASTE, DA LASTRAGEM E PRESSÃO DE INFLAÇÃO DOS PNEUSRESUMO: Ao se utilizar pressão de inflação e a capacidade de carga (lastro) adequadas, pode-se obter um rendimento maior e um prolongamento da vida útil do pneu; além disso, minimizam-se os problemas de perda de tração, aumento de patinhagem e consumo de combustível. O presente trabalho teve como objetivo avaliar o consumo de combustível de um trator agrícola operando com pneus novos e desgastados, em três condições de lastragem e três pressões de inflação, ao trafegar sobre solo compactado com cobertura vegetal. O experimento foi realizado na unidade experimental do Departamento de Zootecnia da Universidade Federal de Lavras, Lavras-MG, em um solo compactado pelo pisoteio de bovinos e com cobertura vegetal. Utilizou-se um trator 4x2 TDA, com potência de 65,62 kW no motor. Os pneus foram do tipo R1, diagonal (dianteiros: 12,4-24; traseiros: 18,4-30), sendo que a altura média das garras dos pneus novos foi de 0,3 e 0, 35 m para os pneus dianteiros e traseiros, respectivamente, e nos pneus desgastados, 0,018 e 0,0045 m para os pneus dianteiros e traseiros, simultaneamente. Os resultados evidenciaram vantagens para o trator quando equipado com pneus novos.PALAVRAS-CHAVE: máquinas agrícolas, ensaio de trator, força de tração.

show abstract

Section: -Coefficient Of Variationsupporting

confidence: 92%

Section: -Coefficient Of Variationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Fuel consumption of a tractor in function of wear, of ballasting and tire inflation pressure

et al. 2012

View full text Add to dashboard Cite

show abstract

“…The specific fuel consumption and the required power (17) determine the hourly fuel consumption (L h -1 ) (23), which related to the field capacity, provides the operational consumption (L ha -1 ) (26). One must emphasize that fuel consumption may vary due to the tractor features such as tire type, weight and work speed (Lopes et al, 2003).…”

Section:  mentioning

confidence: 99%

Energy performance of a production system of eucalyptus

Romanelli

Milan

2010

Rev. bras. eng. agríc. ambient.

View full text Add to dashboard Cite

Maximizing yields is opposed to the goal of minimizing the use of inputs. In the context of system rationalization, the addition of non-economic parameters in the decision making and the magnitude of eucalyptus plantation in Sao Paulo State, Brazil led to this study. The objective was to establish the flows and to evaluate the performance of energy transformations on eucalyptus production. The evaluated system presented three alternatives of soil acidity management: lime, ash and sludge application. The applied indicators were energy return on investment, energy intensity and energy balance, which meant, respectively, the return over energy investment, the energy content of biomass and the energy obtained per area. For the basic scenario, lime, E ROI was 58.5 MJ MJ -1 , energy intensity was 124.7 MJ m -3 , and the energy balance was 2120.7 GJ ha -1 . The required energy was larger when ash (5.2%) and sludge (57.2%) were used. The main inputs were, in order, fuel, fertilizers, herbicide and lime. Harvesting was the main operation (56.7%), followed by subsoiling. Fuel in harvesting, fertilizers and lime summed 79.6% of the total energy. The sensitivity of the system showed that the material used to control soil acidity had more effect on the energy demand (up to +57.4%) than the suggested scenarios (-5.3% when the field efficiency was increased).Key words: sustainability, environmental analysis, E ROI , energy balance Desempenho energético de uma produção de eucalipto RESUMO O contexto da racionalização dos sistemas de produção, a inserção de parâmetros não-econômicos na tomada de decisão e a magnitude do cultivo de eucalipto, no Estado de São Paulo, Brasil, nortearam este estudo, cujo objetivo foi estabelecer os fluxos e o desempenho das transformações energéticas de um sistema de produção de eucalipto. O sistema avaliado apresentou três alternativas de manejo de acidez do solo: calcário, cinzas e biossólido. Os indicadores utilizados foram o retorno de energia sobre energia investida, intensidade e balanço energéticos, que representam, respectivamente, a taxa de retorno de energia obtida, a energia contida na biomassa e a energia obtida por área. Para o cenário básico, calcário, o retorno de energia sobre energia investida foi de 58,5 MJ MJ -1 , a intensidade energética da biomassa 124,7 MJ m -3 e o balanço de energia foi 2120,7 GJ ha -1 . A energia demandada foi maior com cinzas (5,2%) e biossólido (57,2%). Os principais insumos foram, em ordem decrescente: combustível, fertilizantes, herbicida e calcário. A colheita é a principal operação (56,7%), seguida da subsolagem. O combustível gasto na colheita mais fertilizantes e calcário correspondem a 79,6% da energia necessária. A sensibilidade do sistema mostrou que o material de controle de acidez do solo causa maiores efeitos na demanda de energia (até +57,4%) que os cenários sugeridos (-5,3% com acréscimo da eficiência de campo).Palavras-chave: sustentabilidade, análises ambientais, balanço de energia

show abstract

“…Average power on traction bar was determined indirectly, using equation (1) For fuel consumption measuring, a prototype was used, as described by LOPES et al (2003). For volumetric consumption determination, eq.…”

Section: Experiments Was Installed In the Machinesmentioning

confidence: 99%

Seeder-fertilizer machine: energetic demand as a function of vegetal covering handling and manure deposition shank depth in no-tillage system

et al. 2009

Self Cite

View full text Add to dashboard Cite

ABSTRACT: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 seeding of covering cultures and three depths of fertilizer deposition shank, completing 18 treatments, with four repetitions, totaling 72 observations. Parameters of displacement speed, gliding, force on traction bar, peak force, power on pulling bar and fuel consumption were evaluated. It was possible to conclude that force on traction bar was less for depths of 0.11 and 0.14 m of fertilizer plough shank, the same occurring for peak force, power on traction bar and volumetric consumption. The specific consumption was lower at a depth of 0.17 m of fertilizer plough shank. Covering cultures and their handlings did not interfere in the performance of machines under inquiry.KEYWORDS: fuel consumption, knife roller, traction force. SEMEADORA-ADUBADORA: DEMANDA ENERGÉTICA EM FUNÇÃO DO MANEJO DACOBERTURA VEGETAL E DA PROFUNDIDADE DA HASTE DE DEPOSIÇÃO DE ADUBO EM SISTEMA PLANTIO DIRETO RESUMO: O trabalho teve por objetivo avaliar a demanda energética de uma semeadoraadubadora, em função do tipo e manejo da cultura de cobertura vegetal e da profundidade da haste de deposição de adubo. Foi utilizado um trator Valtra BM100, instrumentado, para tracionar uma semeadora-adubadora de precisão equipada com quatro fileiras de semeadura espaçadas de 0,9 m para cultura de milho. O experimento foi conduzido em parcelas subsubdivididas, na área experimental do Laboratório de Máquinas e Mecanização Agrícola (LAMMA) da UNESPJaboticabal, utilizando duas culturas de cobertura (mucuna-preta e crotalária), três manejos dessas coberturas, sendo dois mecânicos (triturador de palhas e rolo-faca) e um químico (pulverização com herbicida), realizados 120 dias após a semeadura das culturas de cobertura e três profundidades da haste de deposição do adubo (0,11; 0,14 e 0,17 m), perfazendo 18 tratamentos, com quatro repetições, totalizando 72 observações. Foram avaliados os parâmetros velocidade de deslocamento, patinagem, força na barra de tração, força de pico, potência na barra de tração, potência de pico e consumo de combustível. Pôde-se concluir que a força na barra de tração foi menor para as profundidades de 0,11 e 0,14 m da haste sulcadora de adubo, o mesmo ocorrendo para força de pico, potência na barra de tração e consumo volumétrico. O consumo específico foi menor na profundidade...

show abstract

Consumo de combustível de um trator em função do tipo de pneu, da lastragem e da velocidade de trabalho

Cited by 21 publications

References 1 publication

Fuel consumption of a tractor in function of wear, of ballasting and tire inflation pressure

Fuel consumption of a tractor in function of wear, of ballasting and tire inflation pressure

Energy performance of a production system of eucalyptus

Seeder-fertilizer machine: energetic demand as a function of vegetal covering handling and manure deposition shank depth in no-tillage system

Contact Info

Product

Resources

About