Impacto da tropicalização do projeto no desempenho de tratores agrícolas
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Universidade Federal de Viçosa
Abstract
Com esse trabalho, objetivou-se analisar comparativamente o desempenho de tratores agrícolas, investigando o impacto da tropicalização do projeto na capacidade de tração e no consumo de combustível. Para a pesquisa, utilizou-se o software de simulação Traction, desenvolvido para simular o desempenho de tratores em diferentes condições. Na metodologia foi empregada uma abordagem quantitativa, com base em simulação computacional, dividida em duas etapas principais: validação do modelo e análise comparativa sob condições tropicalizadas. A validação do modelo Traction foi realizada comparando os resultados simulados com dados de testes oficiais do Nebraska Tractor Test Laboratory (NTTL). Observou-se que o modelo foi eficiente na predição da força de tração, embora tenha apresentado desvios na patinagem e potência. Esses desvios foram encontrados principalmente porque o modelo foi desenvolvido para simular a tração em solo e não em superfície de concreto, como são as pistas utilizadas em testes de tratores. Essas variações foram discutidas e justificadas, reforçando a aplicabilidade do modelo para o objetivo proposto. Após validado, foram analisados três modelos de tratores (John Deere 9R 490, FENDT 700 VARIO Gen7 e John Deere 8R370) sob condições tropicalizadas, utilizando dados de catálogos brasileiros. As adaptações de tropicalização, como alterações no rodado, nas características do motor (torque e rotação) e aumento de peso, foram identificadas como fatores-chave que influenciam o desempenho. Os resultados das análises comparativas entre os tratores originais e tropicalizados indicaram que essas modificações, na rotação, no tipo de rodado e no tamanho das rodas, melhoraram a eficiência tratória e o consumo de combustível para as condições operacionais brasileiras, demonstrando a relevância da tropicalização para a adequação dos tratores ao mercado local. Palavras-chave: Máquinas agrícolas; Simulação computacional; Tração; Consumo de combustível; Teste de tratores.
This study aimed to comparatively analyze the performance of agricultural tractors, investigating the impact of project tropicalization on traction capacity and fuel consumption. The research employed the Traction simulation software, developed to simulate tractor performance under different conditions. A quantitative approach based on computational simulation was used in the methodology, divided into two main stages: model validation and comparative analysis under tropicalized conditions. The Traction model was validated by comparing simulated results with official test data from the Nebraska Tractor Test Laboratory (NTTL). It was observed that the model was effective in predicting traction force, although deviations were noted in wheel slip and power. These deviations were mainly attributed to the fact that the model was developed to simulate traction on soil, rather than on concrete surfaces like those used in tractor test tracks. These variations were discussed and justified, reinforcing the applicability of the model for the intended purpose. Once validated, three tractor models (John Deere 9R 490, FENDT 700 VARIO Gen7, and John Deere 8R370) were analyzed under tropicalized conditions using data from Brazilian catalogs. The tropicalization adaptations, such as changes in the wheel configuration, engine characteristics (torque and RPM), and increased weight, were identified as key factors influencing performance. The results of the comparative analyses between the original and tropicalized tractors indicated that these modifications, in engine speed, wheel type, and wheel size, improved traction efficiency and fuel consumption under Brazilian operating conditions, demonstrating the relevance of tropicalization in adapting tractors to the local market. Keywords: Agricultural machinery; Computer simulation; Traction; Fuel consumption; Tractor testing.
This study aimed to comparatively analyze the performance of agricultural tractors, investigating the impact of project tropicalization on traction capacity and fuel consumption. The research employed the Traction simulation software, developed to simulate tractor performance under different conditions. A quantitative approach based on computational simulation was used in the methodology, divided into two main stages: model validation and comparative analysis under tropicalized conditions. The Traction model was validated by comparing simulated results with official test data from the Nebraska Tractor Test Laboratory (NTTL). It was observed that the model was effective in predicting traction force, although deviations were noted in wheel slip and power. These deviations were mainly attributed to the fact that the model was developed to simulate traction on soil, rather than on concrete surfaces like those used in tractor test tracks. These variations were discussed and justified, reinforcing the applicability of the model for the intended purpose. Once validated, three tractor models (John Deere 9R 490, FENDT 700 VARIO Gen7, and John Deere 8R370) were analyzed under tropicalized conditions using data from Brazilian catalogs. The tropicalization adaptations, such as changes in the wheel configuration, engine characteristics (torque and RPM), and increased weight, were identified as key factors influencing performance. The results of the comparative analyses between the original and tropicalized tractors indicated that these modifications, in engine speed, wheel type, and wheel size, improved traction efficiency and fuel consumption under Brazilian operating conditions, demonstrating the relevance of tropicalization in adapting tractors to the local market. Keywords: Agricultural machinery; Computer simulation; Traction; Fuel consumption; Tractor testing.
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Citation
BRAGA FILHO, Julio Cesar de Oliveira. Impacto da tropicalização do projeto no desempenho de tratores agrícolas. 2025. 35 f. Trabalho de Conclusão de Curso (Graduação) - Engenharia Agrícola e Ambiental - Universidade Federal de Viçosa, Viçosa. 2025.
