| dc.description.abstract | The tractor is one of the main agricultural machines used in rural properties, in this way the
search for alternatives that aim to reduce fuel consumption is very important, one of the ways
is using different driving modes, through the modification of the displacement gear and of
engine rotation. Thus, the objective of this work was to evaluate different driving modes of the
agricultural tractor, seeking to reduce fuel consumption, optimizing the traction performance in
field operation. For this, an experiment was carried out at the Federal University of Santa Maria,
in the municipality of Santa Maria - RS, in the experimental area of the Department of Beef
Cattle, where an agricultural tractor was used in sowing operation. The experimental design
chosen was randomized blocks with six treatments corresponding to the combination of
displacement gears and engine rotation, being (L5 1800 rpm, L5 2000 rpm, L6 1800 rpm, L6
2000 rpm, H2 1800 rpm and H2 2000 rpm). The variables analyzed were displacement speed,
traction force, traction efficiency, hourly and specific fuel consumption, drawbar power and
wheel slip. The results indicated that with the increase of the displacement gear and reduction
of the engine rotation, maintaining the speed of the tractor, a reduction in the hourly fuel
consumption was obtained, not influencing the results of other variables such as specific
consumption, slippage and power at the bar. of traction, for the slip of the driving wheels and
the efficiency in traction presented the best results in the treatments with engine rotation in 2000
rpm. Pearson's linear correlation shows that displacement speed is one of the main factors that
interfere in tractor performance conditions. | |
