Romax Energy是一款机电一体化传动系统效率分析和仿真工具。
Romax Energy包含高级摩擦学模型，并通过不断的内部研发提供支持，允许用户计算给定驾驶循环的功率损失、燃料消耗和排放，
并研究不同轴承和齿轮设计对系统效率的影响。它还提供了一个独特的功能，为给定的设计条件下选择最优油品，并考察油品和添加剂对效率的影响。
大量的客户项目已经证明，Romax的效率仿真方法和工具可以提高传动系统的效率，减少燃料消耗和排放。
Romax Energy跨Romax Nexus系列产品工作，并支持跨多学科工程类协作。
R21新功能
The 2021 Romax release sees new features across the simulation portfolio, with a particular focus on enabling our customers to democratize advanced technologies and to work in more collaborative ways. The key new features in Romax Energy are:
- New interface with Particleworks, to conduct informative CFD simulations early in the design process to gain insight into lubricant distribution within the transmission and understand the effect on churning losses.
- Inclusion of motor efficiency maps, to calculate overall energy loss for an electrified driveline.
- Romax bearing drag model extended to support roller bearings.
- Stacked 2D power loss chart to understand the key loss sources across a speed/torque sweep.
- Seal frictional moment for SKF friction model, to analyse bearing seal loss alongside other loss sources.
- FE speed improvements – for a significant decrease in model preparation and solve times.
- Improvements to Batch Running and Parametric Study, to enable even more wide-ranging optimisation and sensitivity studies.
- Import REXS files, a standardised file format for exchange of geared system CAE models.
预测功率损失
想计算我的传动系统设计的摩擦图，如何才能快速而轻松地做到这一点呢?
怎样才能使我的传动系统的耗热量最小化，并达到效率目标?
Romax Energy功率损失预测模型:
• 综合效率模型，用于计算负载相关损失和负载不相关损失
优化性能
如何确保我的传动系统设计具有最佳性能？我应该选择什么样的齿轮和轴承设计？
如何为我的传动设计选择最好的油品，并优化其效率?
• 系统优化:
-参数化研究，用于研究改变不同运行参数(例如转矩、速度、温度、润滑油浸油深度) 对系统效率的影响
• 分析方法:
-使用Romax载荷谱进行快速便捷的分析
-使用真实的驾驶循环数据进行分析，这些数据与传动系统实际的运行条件相符
• 润滑油添加剂和润滑剂属性的影响:
– 从内置润滑油数据库或定制润滑油中选择，或自定义润滑油
– 定义各个部件的润滑剂属性
– 采用我们独有的基于FVA345的方法研究基础油和油添加剂对功率损失的影响
Early-stage CFD
How can I reduce test failures due to bearings overheating or inadequate lubrication?
How do I minimise churning loss while ensuring proper lubrication for the system?
The Romax-Particleworks interface promotes CAE-led design and enables informed engineering decisions to be made earlier, shortening development timescales and reducing the need for testing:
- Export a fully valid model from Romax that will run on Particleworks with little CFD expertise required, using the default parameters set through best practises.
- Study variations of different parameters such as fill height, temperature and speed and the resulting impact on fluid distribution and churning loss
- Understand system lubrication performance under extreme conditions (hill starts, cornering, etc.)
- Obtain more accurate, high-fidelity churning loss for critical operating conditions (e.g. in a drive cycle) to understand and improve system efficiency.
- Use results to redesign the system to ensure proper lubrication while minimising churning loss
“为了满足不断增长的客户期望和更快的产品开发周期需求，GKN必须“首次即正确”地开发出满足要求的新产品，而Romax帮助我们实现了这一目标。”
“我们在开发过程中使用Romax软件完成了一种新的电动增程汽车传动系统的开发。Romax软件帮助我们创建了仿真模型并完成了效率分析。传动系统的效率图是很难计算的，因此我们需要Romax软件帮我们完成这部分工作并提供相应结果。”
在分析阶段，我们按时收到了Romax的分析报告，这些分析报告质量很高也非常清晰。预期成果将为电动汽车及相关的全集成复杂系统带来重大创新，并更广泛地应用于整个汽车行业。”
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