Abstract
This study investigates the optimization of gear ratios for a 2-speed transmission, with a focus on enhancing performance and efficiency in diverse operating conditions. Specifically, the research addresses the need for two dis-tinct gears: one optimized for field use and the other for road use. The goal is to improve the versatility and functionality of the transmission system, ensuring that it meets the demands of both rugged terrains and smooth highways. To achieve this, the study employed the company’s lifetime test simulation to fine-tune the gear ratios, optimizing them for the most effective power delivery. A significant aspect of the research is the exploration of the tran-sition from a traditional combustion engine tractor, which typically requires multiple gear ratios, to an electric motor setup with only two gears. This transition is made feasible by the electric motor’s ability to deliver high torque across a broad RPM range, thereby enhancing performance while reducing the complexity of gear selection. The results of this optimization process show marked improvements in both the transmission's efficiency and its adaptability, making it highly suitable for a range of applications. This research offers valuable insights into the future of transmission design, particularly in the fields of agriculture and transportation, where there is a growing need for systems that are both efficient and versatile.
References
- 1. Martelli, S., Mocera, F., & Somà, A. (2023). Carbon footprint of an orchard tractor through a life-cycle assessment approach. Ag-riculture, 13(1210).
- 2. Wollenberg, E., Richards, M., Smith, P., Havlík, P., Obersteiner, M., Tubiello, F. N., Herold, M., Gerber, P., Carter, S., & Reisinger, A. (2016). Reducing emissions from agriculture to meet the 2 °C target. Global Change Biology, 22, 3859–3864.
- 3. Golasa, P., Wysokiński, M., Bieńkowska-Gołasa, W., Gradziuk, P., Golonko, M., Gradziuk, B., Siedlecka, A., & Gromada, A. (2021). Sources of greenhouse gas emissions in agriculture, with particular emphasis on emissions from energy used. Energies, 14(3784).
- 4. Hagan, R., Markey, E., Clancy, J., Keating, M., Donnelly, A., O’Connor, D. J., Morrison, L., & McGillicuddy, E. J. (2023). Non-road mobile machinery emissions and regulations: A review. Air, 1, 14–36.
- 5. Lovarelli, D., & Bacenetti, J. (2019). Exhaust gases emissions from agricultural tractors: State of the art and future perspectives for machinery operators. Biosystems Engineering, 186, 204–213.
- 6. Bacenetti, J., Lovarelli, D., Facchinetti, D., & Pessina, D. (2018). An environmental comparison of techniques to reduce pollutants emissions related to agricultural tractors. Biosystems Engineering, 171, 30–40.
- 7. Kim, W.-S., Kim, Y.-J., Kim, Y.-S., Park, S.-U., Lee, K.-H., Hong, D.-H., & Choi, C.-H. (2021). Evaluation of the fatigue life of a tractor’s transmission spiral bevel gear. Journal of Terramechan-ics, 94, 13–22.
- 8. Renius, K. T. (2019). Fundamentals of tractor design. Springer: Cham, Switzerland.
- 9. Mattetti, M., Michielan, E., Mantovani, G., & Varani, M. (2022). Objective evaluation of gearshift process of agricultural tractors. Biosystems Engineering, 224, 324–335.
- 10. Molari, G., & Sedoni, E. (2008). Experimental evaluation of power losses in a power-shift agricultural tractor transmission. Biosystems Engineering, 100, 177–183.
- 11. Pradel, M. (2023). Life cycle inventory data of agricultural trac-tors. Data in Brief, 48, 109174.
- 12. Shin, K., Hwang, J., Kivela, R., Dinner, H., Kwon, Y., & Bae, I. (2007). Tractor transmission verification with KISSsys model.
- 13. European Parliament—Council of the European Union. (2016). Regulation (EU) 2016/1628 of the European Parliament and of the Council of 14 September 2016 on requirements relating to gaseous and particulate pollutant emission limits and type-approval for internal combustion engines for non-road mobile machinery, amending Regulations (EU) No 1024/2012 and (EU) No 167/2013, and amending and repealing Directive 97/68/EC. Official Journal of the European Union, 50, 1–76.
- 14. European Parliament Council of the European Union. (2013). Regulation (EU) 167/2013 of the European Parliament and of the Council of 5 February 2013 on the approval and market surveil-lance of agricultural and forestry vehicles.
- 15. Commission Delegated Regulation (2018) (EU) 2018/985 of 12 February 2018 Supplementing Regulation (EU) No 167/2013 of the European Parliament and of the Council as Regards Environ-mental and Propulsion Unit Performance Requirements for Agri-cultural and Forestry Vehicles and Their Engines and Repealing Commission Delegated Regulation (EU) 2015/96.
Details
| Primary Language | English |
|---|---|
| Subjects | Mechanical Vibrations and Noise |
| Journal Section | Articles |
| Authors | |
| Publication Date | September 30, 2024 |
| Submission Date | April 21, 2024 |
| Acceptance Date | August 18, 2024 |
| Published in Issue | Year 2024 Volume: 3 Issue: 3 |