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      Desempenho de trator agrícola em três superfícies de solo e quatro velocidades de deslocamento Translated title: Performance of agricultural tractor on three different soil surfaces and four forward speeds

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          Abstract

          O objetivo desse trabalho foi avaliar a capacidade de um trator em desenvolver força de tração ao tracionar uma carga de 25 kN em quatro velocidades de deslocamento e em três condições da superfície do solo: solo mobilizado, solo coberto com os restos da cultura do milho e braquiária e solo firme sem cobertura. O experimento foi realizado em três faixas representadas pelo tipo de superfície, sendo aplicados os quatro tratamentos determinados pela velocidade de deslocamento, obtidos pelas mudanças de marchas do trator. Utilizaram-se seis repetições em cada faixa, totalizando 72 unidades experimentais, monitorando-se a velocidade de deslocamento, a força de tração, a patinagem das rodas traseiras e dianteiras e o consumo horário de combustível. A análise dos resultados permitiu concluir que no solo firme e sem cobertura vegetal, o desempenho do trator foi melhor, seguido pelo solo com a superfície coberta com palha de milho e braquiária e, por último, o solo com a superfície mobilizada. O melhor desempenho do trator foi obtido na macha C1 que forneceu a velocidade de deslocamento de 6 km h-1.

          Translated abstract

          The aim of this work was to evaluate tractor performance in soil with three different surfaces: firm soil without covering, mobilized soil, and firm soil with vegetal residue of corn and braquiária, for four forward speeds. The experiment was accomplished in three plots determined by the soil conditions. In each plot four treatments were composed by the forward speed obtained by the changes of the tractor gear. Six repetitions were used in each plot, totaling 72 experimental units, combination of the traction, slip of the rear and front wheels, forward speed and fuel consumption. The values of the tractor performance obtained led to the conclusion that in the firm soil without vegetable covering the tractor performance was better, followed by the soil with the firm surface and covered with corn straw and braquiária and finally the mobilized soil. The best tractor performance was obtained in the C1 gear that supplied the forward speed of 6 km h-1.

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          Most cited references18

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          Berry temperature and solar radiation alter acylation, proportion: and concentration of anthocyanin in Merlot grapes

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            Manual de métodos de análise de solo

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              Manual de método de análise de solo

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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                rbeaa
                Revista Brasileira de Engenharia Agrícola e Ambiental
                Rev. bras. eng. agríc. ambient.
                Departamento de Engenharia Agrícola - UFCG (Campina Grande )
                1807-1929
                March 2010
                : 14
                : 3
                : 333-339
                Affiliations
                [1 ] Universidade Estadual do Oeste do Paraná Brazil
                [2 ] Universidade Estadual Paulista Brazil
                [3 ] Universidade Estadual de Maringá Brazil
                [4 ] Universidade Estadual Paulista Brazil
                Article
                S1415-43662010000300015
                10.1590/S1415-43662010000300015
                33992867-0182-4c9a-861c-ffff81f1b32a

                http://creativecommons.org/licenses/by/4.0/

                History
                Product

                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=1415-4366&lng=en
                Categories
                AGRICULTURAL ENGINEERING
                ENVIRONMENTAL SCIENCES

                Agricultural engineering,General environmental science
                agricultural machine,test,traction,máquina agrícola,ensaio,tração

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