Towards more efficient tractors: Assessing and refining traction test procedures for agricultural tractors

IF 2.4 3区 工程技术 Q3 ENGINEERING, ENVIRONMENTAL Journal of Terramechanics Pub Date : 2024-10-09 DOI:10.1016/j.jterra.2024.101018
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Abstract

A reliable testing procedure is needed to benchmark different vehicle and tyre parameters. Several testing procedures within two main families – transient and steady states – were adopted to evaluate drawbar performance of tractors. The two procedural families were not hitherto compared using a full vehicle. This article aims to fill this gap. The transient and steady-state procedures were tested using a tractor rated of 230 kW sets in different configurations and equipped with sensors for evaluating the tractive parameters. In the transient procedure, the drawbar load was continuously increased to maintain a fixed ground speed. In the steady-state procedure, the drawbar load was gradually increased by reducing the ground speed. The maximum drawbar force generated by the tractor differed little between procedures, but a difference was observed in power delivery efficiency, mostly for the transmission’s influence during transient conditions leading to variable transmission efficiency. The results of the steady-state procedure for different vehicle configurations were more consistent with findings in the literature than those of the transient procedure. The steady-state procedure is better than the other but it requires more land and therefore it is less convenient when drawbar performances must be quickly evaluated for many vehicle and soil configurations.
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提高拖拉机的效率:评估和完善农用拖拉机牵引力测试程序
需要一种可靠的测试程序来确定不同的车辆和轮胎参数。我们采用了瞬态和稳态两大类测试程序来评估拖拉机的牵引杆性能。迄今为止,尚未使用整车对这两个程序系列进行比较。本文旨在填补这一空白。瞬态和稳态程序使用额定功率为 230 千瓦的拖拉机进行了测试,拖拉机采用不同的配置,并配备了用于评估牵引参数的传感器。在瞬态程序中,牵引杆负载不断增加,以保持固定的地面速度。在稳态程序中,通过降低地面速度逐渐增加牵引力。拖拉机产生的最大牵引力在不同程序中差别不大,但在动力传输效率方面却出现了差异,这主要是由于变速器在瞬态条件下的影响导致了变速器效率的变化。与瞬态程序相比,不同车辆配置的稳态程序结果与文献研究结果更为一致。稳态程序比其他程序更好,但它需要更多的土地,因此在必须快速评估许多车辆和土壤配置的牵引杆性能时,它不太方便。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Journal of Terramechanics
Journal of Terramechanics 工程技术-工程:环境
CiteScore
5.90
自引率
8.30%
发文量
33
审稿时长
15.3 weeks
期刊介绍: The Journal of Terramechanics is primarily devoted to scientific articles concerned with research, design, and equipment utilization in the field of terramechanics. The Journal of Terramechanics is the leading international journal serving the multidisciplinary global off-road vehicle and soil working machinery industries, and related user community, governmental agencies and universities. The Journal of Terramechanics provides a forum for those involved in research, development, design, innovation, testing, application and utilization of off-road vehicles and soil working machinery, and their sub-systems and components. The Journal presents a cross-section of technical papers, reviews, comments and discussions, and serves as a medium for recording recent progress in the field.
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