# Integrating Digital Twins of Engineering Labs into Multi-User Virtual Reality Environments
## 3 Workflow for the Development of a New Crawling Engine Experience
### Analysis of the Trailed Motor Experience and New Methodology of the Laboratory Experience  
Analyzing the behavior of the trainees when performing the trailed motor experiment, some negative aspects of the experiment were noted, such as that the reliance on manual adjustments limits the trainees' ability to focus on the analysis of the data obtained. Instead of focusing on interpreting key variables and optimizing system performance, much of the time is spent on correcting deviations and ensuring stable operating conditions. This reduces the effectiveness of the experiment as an educational tool and restricts the opportunity to explore more advanced concepts related to automation and process control.  
Another critical aspect is temperature monitoring using a multichannel system. Although this tool allows multiple measurement points to be recorded simultaneously, its use presents difficulties in the correct assignment of the values obtained. The lack of an integrated display and the need to manually correlate each reading with its measurement point can lead to confusion and errors in the analysis. This not only affects the accuracy of the results but also hinders the understanding of the thermal distribution patterns within the system being evaluated.  
Figure 2: Workflow for the development of a new crawling engine experience.  
New Methodology for the Realization of the Trailed Motor Experiment  
To solve the problems mentioned above, a modernized educational approach is proposed, incorporating the emerging technologies detailed in this work. The proposal aims to transform the educational experience by integrating advanced tools, such as multi-user virtual reality environments and real-time sensing, that enrich both learning and safety in motor education.  
This new experience seeks not only to provide a safer environment for students by minimizing the risks associated with traditional practices, but also to introduce key Industry 4.0 concepts and technologies. These tools, such as advanced sensing, remote monitoring, and virtualization, allow students to become familiar with current industry practices, thus fostering more complete training aligned with the demands of the modern job market.  
Specifically, this proposal aims to achieve the following: (1) develop an interactive and immersive learning environment where multiple users can simultaneously interact with a real-time synchronized digital twin of an engine; (2) enhance data acquisition and visualization using IoT-based real-time monitoring systems to improve the interpretation of mechanical variables; and (3) optimize safety and accessibility in the learning process by reducing the physical risks associated with traditional laboratory practices.  
The experiment was carried out following a structured sequence of tests to evaluate the performance of the trailed motor under different thermal and ventilation conditions. The procedure consists of the following steps:  
* Motor start-up: The system is started, and the initial operating conditions are established.
* Data logging with cold oil and without fan: Using the Meta Quest 3 indicators, the engine operating parameters are captured in real time for further analysis.
* Restart with warm oil and no fan: The experiment is repeated once the oil has reached a higher operating temperature, in order to evaluate the impact of warm-up on engine performance.
* Restart with hot oil and fan: A final test is carried out, activating the ventilation system to analyze its influence on the thermal stability and efficiency of the engine.  
In each of the stages, the motor started its operation at 600 RPM, increasing in increments of 100 RPM until the desired speed was reached. This adjustment was made by means of the frequency inverter or, failing that, through the virtual environment developed in Unity. All tests were carried out under the supervision of a teacher, ensuring proper use of the motor and safeguarding the integrity of the equipment and the participants.