Improvement of tractor performance in respect of increasing threshing efficiency of flax crop [electronic resource].

Includes references.

Up till now in Egypt, the tractor treading (trampling by tractor wheel ) is still the common practice for threshing flax crop. Improving the efficiency of the pneumatic tractor tire can help to obtain a good yield and quality for flax fiber. This research investigated the effect of some factors including working speed, moisture content and inflation pressure on tractor performance during threshing flax crop. A Nasr tractor 60 Hp (44.77 kW) was used at three forward speeds (2.85, 4.17, and 6.07 km/h), four wheel inflation pressure (80, 100, 120 and 140 kpa) and three levels of capsules moisture content (17.35, 14.62, and 11.25%) The results revealed that, optimum values for the operation conditions were obtained at 4.17 km/h forward speed, 120 kpa wheel inflation pressure and 11.25% (d.b) capsules moisture content. At these levels, maximum tractor productivity of (7.22 ton/h), minimum slip of (4.24%), minimum energy consumption (2.08 kW.h/ton), minimum seed losses (4.35%), minimum stalk losses (13.95%) and maximum fiber percentage(17.04%).

Summary in Arabic.

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