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Effects of some functional parameters on noise pollution of John Deere 3350 and New Holland 155 tractors | ||
| Iran Agricultural Research | ||
| دوره 44، شماره 1، تیر 2025، صفحه 33-41 اصل مقاله (713.75 K) | ||
| نوع مقاله: Full Article | ||
| شناسه دیجیتال (DOI): 10.22099/iar.2025.51391.1639 | ||
| نویسندگان | ||
| Babak Moradvand1؛ Leila Naderloo1؛ Hossein Javadikia* 1؛ Kamran Kheiralipour2 | ||
| 1Department of Mechanical Biosystems Engineering, Faculty of Agriculture, College of Agriculture and Natural Science, Razi University, Kermanshah, I. R. Iran | ||
| 2Department of Mechanical Biosystems Engineering, Faculty of Agriculture, College of Agriculture and Natural Science, Ilam University, Ilam, I. R. Iran | ||
| چکیده | ||
| In this study, noise pollution from the John Deere 3350 and New Holland 155 tractors was measured at three operator-related positions: 10 cm from the driver’s ear and at distances of 7.5 and 20 m from the tractor centerline, as they traveled over asphalt and soil surfaces. Measurements were conducted under three engine speeds (1000, 1500, and 2000 rpm) and three gear settings (gears 1, 2, and 3), with three replications for each condition. Data were analyzed using a factorial test within a completely randomized design. Results indicated that noise levels increased with higher engine speeds and gear settings on both surfaces. The main factors had a statistically significant effect on noise emission levels in both tractors at the 1% probability level. For the John Deere 3350, noise levels at the driver’s ear position exceeded the standard limit of 85 dB (A) at all gear and speed combinations on asphalt, except for 1st gear at 1000 rpm. The New Holland 155 exhibited lower noise levels at the driver’s ear compared to the John Deere 3350, likely due to the presence of an enclosed cab. | ||
| کلیدواژهها | ||
| Engine speed؛ Exposure time؛ Gear ratio؛ Noise pollution؛ Tractor | ||
| مراجع | ||
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