|
DCA Publikationer Comparative energy consumption test with different tyres mounted on slurry tanker and contractors/farm wagon Prøverapport, nr. 951, 2004 Af Martin Heide Jørgensen, Peter Storgaard Nielsen og Holger Lund, Research Centre Bygholm  Summary and conclusion
Comparative energy consumption tests were made during transport with a 20 t contrac-tor’s/farm wagon and a 20,000 l slurry tanker. Both vehicles were hauled by a Fendt 930 Vario tractor. The analyses were carried out under practical conditions. Road haulage was performed at speeds of 30 and 40 km/h, and field haulage was performed in stubble and on ploughed soil. For field haulage, a speed of 10 km/h was maintained. The applied tyre pres-sure rates conformed to the load and speed rates stipulated in the respective producers’ data. The results are stated as relative diesel consumption. A mounting consisting of 650/60-30.5/173 A8 Alliance 328 TL diagonal tyres was used as slurry tanker reference. The analysed tyres were 650/65R 30.5/176 D Michelin CARGOXBIB TL, 710/55R 34/169 D Nokian ELS TL and 800/50R 34/168 D Nokian ELS TL. For field haulage all three tyres will provide 10-13 % savings, and for road haulage savings of 14-16 % will be seen. 550/60-22.5/12 PR Alliance 328 TL diagonal tyres were used as reference for the contractor’s wagon, and as reference for the analysed tyres, 550/60R 22.5/159 E Alliance 380 TL, 560/60R 22.5/161 D Michelin CARGOXBIB TL and 550/60R 22,5/151 D Nokian ELS TL were used. Compared to the reference tyre, only minor savings were obtained in the cases where 550/60R 22.5/159 E Alliance 380 TL was used, whereas for each of the other two tyres, about 12 % could be saved on field haulage and about 7 % on road haulage. In connection with the above-mentioned analyses, the ploughland sinkage rate was deter-mined for the slurry tanker. The analyses indicate that sinkage rates of about 8 cm were seen for both 650/60-30.5/175 A8 Alliance 328 TL diagonal tyre (reference tyre) and 710/55R 34/169 D Nokian ELS TL, whereas the for tyres 650/65R 30.5/176 D Michelin CARGOXBIB TL and 800/50R 34/168 D Nokian ELS TL, the sinkage rates were about 2 cm less. The analysis was based on a great number of measurements, but unfortunately, an approved method for the performance of result analyses is not available at present, and therefore, gen-eral mean figures are used to indicate the obtained results. |