Romax Energy is a global efficiency prediction tool for electro-mechanical transmissions. Encompassing advanced tribological models and backed-up by continuous internal R&D efforts, Romax Energy allows users to calculate power losses, fuel consumption and emissions for a given drive cycle, and to investigate the impact of different bearing and gear designs on system efficiency. It also offers a unique capability of selecting the optimum oil and investigating the effect of the oil additive pack for a given design.
Numerous customer projects have proven that Romax’s efficiency simulation methods and tools can improve powertrain efficiency and reduce fuel consumption and emissions. Romax Energy works across the Romax Nexus family of products, enabling collaboration across multi-disciplinary engineering functions.
What’s new in R20?
Romax Energy R20 includes several additional loss models, ensuring that it provides a range of options for predicting electro-mechanical transmission efficiency.
- Industry-leading proprietary bearing drag model – to account for all bearing details, operating conditions due to misalignment and load, and detailed lubricant traction properties.
- ISO/TR 22849:2011(E) – to predict bevel/hypoid gear efficiency based on tooth profile, sliding and churning.
- Changenet oil churning models (2007 and 2011) – widely used in the automotive industry, to provide accurate churning losses.
- Improvements to the drive cycle workflow and the efficiency simulation user experience.
- New bearing database from Nachi-Fujikoshi.
- Connection manager introduced to speed up the modelling of complex shaft arrangements, with automatic detection of connection locations, and to aid auditing of connections to reduce modelling errors.
- Import reference geometry directly from CAD for effective visualisation and communication.
- Memory and speed improvements for FE components resulting in faster model loading, managing of large FE components and more efficient memory usage.
- Additional results and variables available in parametric study and batch running (generating profile shift, additional gear mesh results, gear rim thickness, bearing axial clearance).
- Additional summary reports for backlash and material properties, useful for model auditing and checking.
- Clip selection and view manager improvements.
For more information on new features in R20, watch our release webinar.
PREDICT POWER LOSSES
I want to calculate a friction map for my transmission design. How can I do this quickly and effortlessly?
How can I minimise the dissipated heat of my transmission and meet efficiency targets?
Romax Energy offers comprehensive power loss prediction models for calculation of both load-dependent and load-independent losses.
OPTIMISE PERFORMANCE
How do I ensure optimal performance for my transmission design? What gear and bearing design should I choose?
How can I select the best oil for my transmission design and optimise its efficiency?
• System optimisation:
– Parametric studies to investigate the impact of changing various operational parameters (e.g. torque, speed, temperature, lubricant level) on the system’s efficiency performance
• Analysis methods:
– Use Romax duty cycles for fast and convenient analysis
– Use real-life drive cycle data for analysis that is relevant and appropriate for the actual operating conditions of the transmission
• Effect of oil additive pack and lubricant properties:
– Select from a built-in lubricant database, customise lubricants, or create your own
– Specify individual component lubricant properties
– Investigate the effect of base oil and oil additive pack on the power losses using our proprietary method based on FVA345 methodology
DRIVE CYCLE SIMULATION
Can I meet my emissions targets and challenges? Can I evaluate my design for any prescribed drive cycle?
• Drive cycle analysis:
– At a system-level – system efficiency maps, energy losses, equivalent fuel and CO2 emissions
– At a component-level – component power losses, efficiency, fuel consumption and CO2 emissions
• Estimate fuel consumption and emissions:
– Modify fuel properties for accurate calculation of fuel consumption and CO2 emissions
“To meet increasing customer expectation and faster development cycles, GKN Driveline has to get ‘right first time’ to the required product performance, and Romax helps us achieve that.”
“We used [Romax Software] within the development process for a new transmission system for electric range-extended vehicles. [Romax Software] helped us to create simulations and enable efficiency analysis. Efficiency maps of transmissions can be very hard to calculate, so we needed [Romax Software] to provide this information.”
“Deliverables for the period under analysis were received on time and they are all at a high level of quality and clarity. The expected outcomes will provide significant innovation in the domain of EVs and related fully-integrated complex systems and more generally to the automotive community.”
The Romax Nexus platform aligns with your powertrain and transmission development cycle, from rapid modelling and concept exploration to detailed simulation and virtual product sign-off. Watch the video or click below to learn more about Romax Nexus.
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