PREDICTION OF TRACTOR FUEL CONSUMPTION AND DRAWBAR POWER USING LABORATORY AND FIELD TESTS

Document Type : Original Article

Authors

1 Sen. Res., Ag. Eng. Res. Inst., Ag. Res. Center, Dokki, Giza, Egypt.

2 Res., Ag. Eng. Res. Inst., Ag. Res. Center, Dokki, Giza, Egypt.

Abstract

Recent increases in fuel prices have generated another cost concern for farmers. Fuel is one of several input costs that have continued to increase over the years with fuel prices taking a dramatic prices jump over a short time period Therefore; an indirect method of indicating drawbar pull by measuring tractor fuel consumption, power take off and engine speed during field operation are described.  The aim of this work study was to study factors which may help to reduce the tractor rate of fuel consumption, and to define a predicted formula for power exerted on the draw-bar using both power take off; and draw bar laboratory tests, and compare those gained result with formula defined by Grrisso. In this work study a tractor of 26 kW was tested using both PTO dynamometer for factors affecting on tractor power take off shaft, and a drawbar dynamometer for factors affecting on tractor draw-bar. Meanwhile an equation for pull prediction was figured out using power on the power take off; engine speed; fuel consumption; and the forward speed factors. No significant differences were found between this formula and Grrisso formula. Throttle down and gear up is recommended during 75% and 50 % drawbar load.

Main Subjects

References

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