Automotive engine assembly and disassembly are common and crucial programs in the automotive industry. Traditional education trains students to learn automotive engine assembly and disassembly in lecture courses and then to operate with physical engines, which are generally low effectiveness and high cost. In this work, we developed a multi-layer structured Virtual Reality (VR) system to provide students with training in automotive engine (Buick Verano) assembly and disassembly. We designed the VR training system with The VR training system is designed to have several major features, including replaceable engine parts and reusable tools, friendly user interfaces and guidance, and bottom-up designed multi-layer architecture, which can be extended to various engine models. The VR system is evaluated with controlled experiments of two groups of students. The results demonstrate that our VR training system provides remarkable usability in terms of effectiveness and efficiency. Currently, our VR system has been demonstrated and employed in the courses of Chinese colleges to train students in automotive engine assembly and disassembly. A free-to-use executable file (Microsoft Windows) and open-source code are available at https://github.com/LadissonLai/SUSTech_VREngine for facilitating the development of VR systems in the automotive industry. Finally, a video describing the operations in our VR training system is available at https://www.youtube.com/watch?v=yZe4YTwwAC4

翻译：汽车发动机拆装是汽车行业中常见且关键的环节。传统教育通过课堂讲授向学生传授汽车发动机拆装知识，随后在实体发动机上进行操作，这种方式通常效率低下且成本高昂。本文开发了一种多层结构的虚拟现实（VR）系统，用于训练学生拆装汽车发动机（别克威朗）。我们设计该VR训练系统时，使其具备多项主要特性，包括可更换的发动机部件与可重复使用的工具、友好的用户界面与引导，以及自下而上的多层架构，该架构可扩展至多种发动机型号。通过两组学生的对照实验对VR系统进行评估，结果表明我们的VR训练系统在有效性和效率方面表现出显著的可用性。目前，该VR系统已在中国高校课程中展示并用于训练学生拆装汽车发动机。为促进汽车行业VR系统的开发，我们提供了免费使用的可执行文件（Microsoft Windows）及开源代码，详见https://github.com/LadissonLai/SUSTech_VREngine。此外，描述VR训练系统操作流程的视频可访问https://www.youtube.com/watch?v=yZe4YTwwAC4获取。