SW—Soil and Water: Tractive Performance of a Mechanical Front-Wheel Assist Tractor as related to Forward Speeds
✍ Scribed by C. Jenane; L.L. Bashford
- Publisher
- Elsevier Science
- Year
- 2000
- Tongue
- English
- Weight
- 158 KB
- Volume
- 77
- Category
- Article
- ISSN
- 0021-8634
No coin nor oath required. For personal study only.
✦ Synopsis
A mechanical front-wheel assist tractor was instrumented to investigate the e!ects of tractor forward speed on the dynamic traction ratio, tractive e$ciency and the ratio of axle load to axle input power. The tractor was tested at three operating speeds and under two distinct tractive soil surfaces: a stubble "eld and a disc ploughed "eld. Analysis of the results showed that with no change in the primary tractor mass, and by selecting the appropriate highest gear ratio, a tractor can be operated at its optimal tractive performances, and at the same time, higher work e$ciency may be achieved. This study indicates that the ratio of dynamic load to input axle power varies according to speed and drawbar pull and does not re#ect the ratio of tractor static load to rated p.t.o. power. The reported "eld data are mainly applied to high draft implements that use full tractor power.