驱动系统整体评估的比较评估

Vehicles Pub Date : 2024-02-13 DOI:10.3390/vehicles6010017
Raphael Mieth, Frank Gauterin
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引用次数: 0

摘要

汽车驱动系统的开发目标各不相同,其中部分目标相互矛盾。虽然重点通常是提高效率和性能(取决于驱动系统的类型),但目的是同时尽可能降低成本、重量和体积。这一目标通常会带来目标之间的冲突;例如,效率的提高通常会带来成本的增加,或者性能的提高会降低可实现的最大效率。因此,每个驱动系统都是这些目标之间的折衷方案,根据主要侧重点的不同,其发展也会受到影响。本研究提出的方法可作为评估车辆驱动系统的方法框架。该程序包括根据定义的标准对不同的驱动概念进行评估,并将这些评估结果相互比较。这些标准可以自由选择,并根据各自的侧重点以不同的方式加权。从整体评估的意义上讲,系统评估系数最终作为一个指标,由各个标准的评级值组成,并考虑到它们的具体权重。在本文提出的新方法的帮助下,比较不同设计的动力系统的复杂性得以降低,涵盖相关观点的整体评估成为可能。这种包罗万象的观点有助于早期开发阶段的工作,也是在概念开发过程中进一步做出开创性决策所需的评估基础。
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Comparative Assessment for Holistic Evaluation of Drive Systems
The development of vehicle drive systems targets different goals, which are partly contradictory. While the focus is often on increasing efficiency and—depending on the type of drive system—performance, the aim is to simultaneously reduce costs, weight, and volume as much as possible. This goal generally presents a conflict of objectives; for example, a gain in efficiency usually correlates with higher costs, or an increase in performance reduces the maximum achievable efficiency. Therefore, each drive system represents a compromise among these goals, and depending on the main focus, the development can be influenced. The methods presented in this work serve as a methodological framework for the evaluation of vehicle drive systems. The procedure involves evaluating different drive concepts based on defined criteria and comparing these evaluations with one another. These criteria can be selected freely and weighted differently, depending on the individual focus. In the sense of a holistic assessment, a system evaluation factor ultimately serves as an indicator, which is composed of the rating values of the individual criteria, taking into account their specific weightings. With the help of the novel method presented in this paper, the complexity of comparing differently designed powertrains is reduced, and a holistic assessment covering relevant viewpoints is possible. Such an all-encompassing view is helpful in the early development phase and is required as an evaluation basis for further, groundbreaking decisions in concept development.
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