Research Information System
15th International Congress of the Innovative Agricultural Technologies, IAT 2025, Antalya, Turkey, 15 - 19 October 2025, vol.805 LNCE, pp.213-221, (Full Text)
One of the important rules of tractor engine and PTO performance test of the OECD Code 2 is the ambient temperature must be 23 ± 7 ℃ during the tests. This rule, which allows tests to be carried out in a wide range of 16–30 ℃, causes differences in test results. In other words, the power and fuel consumption of tractors tested at an average temperature of 23 ℃ differ from those tested at 30 ℃. Within the scope of this study, tests were carried out at two different ambient temperatures by changing the ambient conditions with the evaporative cooling system (ECS) in the PTO test laboratory. In Case 1, the ECS was activated, and the ambient temperature was kept at 23 ℃ and succeeded. In Case 2, the ECS was not operated, and the test data was evaluated when the ambient temperature reached 30 ℃. At the end of the study, the effect of ECS on tractor performance was determined by comparing Case 1 and Case 2. The effects of atmospheric conditions such as ambient temperature, pressure, and humidity on tractor performance were investigated. According to the results of the study, tractors tested with the ECS on showed an increase in PTO power of 1.1–4.0%, hourly fuel consumption of 0.7–3.0%, and specific energy of 0.3–3.4% compared to tractors tested with the ECS off. The change in specific fuel consumption was a (+) 0.8% increase and a (−) 2.4% decrease.