Reduction of fuel consumption using driving strategy in agricultural tractor

Abstract

During the acquisition and use of an agricultural tractor, the consumption of fuel by the engine must be taken into account by the user, considering its nonrenewable origin and the marketing price. Appropriate strategies in driving tractors can help users to reduce production costs. In this context, the objective of this study was to evaluate the fuel consumption of an agricultural tractor using different driving strategies. Load levels were imposed, following the instructions from Organization for Economic Co-operation and Development Code 2, using an instrumented dynamometer car, in a concrete test track. Six load levels (30, 40, 50, 60, 70, and 80% of Q0) and three travel speeds (5.16, 7.29, and 10.48 km h -1 ) were applied for the strategies used (Full Throttle and Shifted Up -Throttle Back), where Q0 is the traction force corresponding to the maximum power in the drawbar for each gear selected. Three repetitions were made, which totaled 108 experimental units (2 × 3 × 6 × 3), in a completely randomized experimental design. Shifted Up -Throttle Back mode should be used as a strategy of tractor driving, because it can save up to 29.39% of fuel in relation to the Full Throttle mode, typically used by users. Redução do consumo de combustível usando estratégia de condução em trator agrícola RESUMO: No momento da aquisição e utilização de um trator agrícola, o consumo de combustível pelo motor deve ser levado em conta pelo usuário, tendo em vista sua origem não renovável e o preço de comercialização. Estratégias adequadas de condução de tratores podem auxiliar os usuários a reduzirem os custos de produção. Nesse contexto, objetivou-se avaliar o consumo de combustível de um trator agrícola utilizando diferentes estratégias de condução. Cargas parciais foram impostas, seguindo instruções contidas no Código 2 da Organização para a Cooperação e Desenvolvimento Econômico, utilizando carro dinamométrico instrumentado, em pista de concreto. Foram aplicadas seis cargas parciais (30; 40; 50; 60; 70 e 80% de Q0) e três velocidades de deslocamento (5,16; 7,29 e 10,48 km h -1 ), para as estratégias utilizadas (Aceleração Máxima; e Marcha Longa -Aceleração Reduzida), onde Q0 é a força de tração correspondente à potência máxima na barra de tração, para cada marcha selecionada. Foram realizadas três repetições, que totalizaram 108 unidades experimentais (2 x 3 x 6 x 3), em um delineamento experimental inteiramente casualizado. O modo Marcha Longa -Aceleração Reduzida deve ser utilizado como uma estratégia de condução do trator, pois pode-se economizar até 29,39% de combustível em relação ao modo Aceleração Máxima, normalmente utilizado pelos usuários.Palavras-chave: pista de teste de concreto, cargas parciais, eficiência energética

Interference of the Number of Remote Control Valves in Use on the Energy Performance of an Agricultural Tractor With Productivity Management

“…During the experiment, FWD, APM, and EPM were activated, the fuel tank was complete, and the engine load was maintained below 5% variation. APM performs a function similar to the shifted up-throttle back system described by Farias et al (2019). In this system, only the theoretical target speed was defined on the panel, and the software that manages APM chose the appropriate gear and engine speed.…”

Simulation of Fuel Consumption Based on Engine Load Level of a 95 kW Partial Power-Shift Transmission Tractor

“…The full load (100%) condition was applied to develop the engine characteristics map to conduct the simulation because the fuel consumption of tractor can be optimized by operating the engine at full load condition [25,26]. Farias et al [27] also considered not less than 30% of the engine load level. According to the Nebraska tractor test, the SFC increases for more than 30% of engine loads [28].…”

Performance of a diesel engine using different biodiesel blends and injection configurations

“…In the electronic injection system, an electronic control unit (ECU) is responsible for monitoring all the sensors available in the engine and, after processing the data, controlling the fuel injection parameters (Gabdrafikov et al, 2019). Consequently, the accelerator pedal position sensor (APPS) plays an important role in the engine operation, as it informs the ECU of the power required (Ramesha et al, 2016), reducing the fuel consumption as the engine throttle speed is decreased (Farias et al, 2019).…”