Res. Agr. Eng., 2009, 55(4):129-135 | DOI: 10.17221/13/2009-RAE
Impact of semitrailer tyre pressure upon passive resistance and tractor unit operation economy
The aim of the measurement was to establish and prove the effect of the semitrailer tyre pressure on the magnitude of power losses and energy intensity in a tractor unit operation. The measured and calculated values were interlaid with the corresponding functions by means of regression analysis considering the magnitude of the determination coefficient (determination index). The values of the determination index ranged from 0.95 to 0.99 for regression functions; all the regression function were highly reliable at 0.01 relevance level. The difference of the lost power was recorded at the speed of 35 km/h, 1.82 kN between 170 kPa and 300 kPa pressures. The energy intensity of the tractor unit operated on the testing route changed as a result of increasing the semitrailer tyre pressure from 170 kPa to 240 kPa while its hourly consumption dropped by 1.9 l/h (i.e. 6.3%).
Keywords: lost power; speed; rolling; tyre pressure; fuel consumption
Published: December 31, 2009 Show citation
References
- Bygdén G., Eliasson L., Wästerlund I. (2004): Rut depth, soil compaction and rolling resistance when using bogie tracks. Journal of Terramechanics, 40: 179-190.
Go to original source... - Dočkal V., Kovanda J., Hrubec F. (1998): Tires. 1st Ed. ČVUT, Praha: 71. (in Czech)
- Grečenko A. (1963): Tire and belt Tractors. 1st Ed. SZN, Praha: 402. (in Czech)
- Grečenko A. (1994): Properties of terrain vehicles. 1st Ed. V©Z, Praha: 118. (in Czech)
- Semetko J., Bauer F., Černý J., ®ikla A. (1986): Mobile energy Machines. 1st Ed. Příroda, Bratislava: 453. (in Czech)
- Syrový O. (2006): How to Reduce Transport Costs. Report from VUZT (Research Institute of Agricultural Engineering in Prague), Praha, 12. (in Czech)
This is an open access article distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 International (CC BY NC 4.0), which permits non-comercial use, distribution, and reproduction in any medium, provided the original publication is properly cited. No use, distribution or reproduction is permitted which does not comply with these terms.