ارزيابي و مقايسه ميزان مصرف سوخت ويژه و انرژي ويژه مالبندي در دونوع تراكتور با قدرت يكسان

Evaluation and Comparison of Drawbar Specific Fuel Consumption and Specific Drawbar Energy of Two Type Tractors Having Same Power Rating

This study was conducted in order to evaluate and compare specific fuel consumption and specific drawbar energy for two similar powers rating tractors but having different structural features (MF285 and ITM750). Measurements were carried out at actual field condition using standard Nebraska and DEeD test cods. A split plot design was used based on complete randomized block. Tests were performed on three different working surfaces (concrete, unplowed and plowed surface). Significant difference was found regarding the effect of different surface on both specific fuel consumption and specific drawbar energy .on each and between two tractors. Results also showed that two tractors had less specific fuel consumption and higher specific drawbar energy on concrete surface and unplowed soil as compared to plowed soil. Results obtained for slip test showed that slip rate in ITM750 was less than MF285 tractor. In overall MF285 had less specific fuel consumption and higher specific drawbar energy than those rating to ITM750 tractor.