Siemens

The Challenge: Optimizing Next-Generation Hybrid Vehicle Performance

In an increasingly competitive and sustainability-focused automotive market, hofer powertrain faced the challenge of developing Dedicated Hybrid Transmission (DHT) systems that would maximize both fuel efficiency and vehicle performance. The complexity lies in the fact that having the best hardware is not sufficient: an intelligent energy management strategy is required to optimize the distribution between internal combustion energy and electric energy.

The Solution: Advanced Siemens Technology for Comprehensive Optimization

hofer powertrain chose the powerful tools from Siemens Digital Industries Software to address this complex challenge, implementing a comprehensive solution based on:

Simcenter Amesim: The Leading Simulation Platform

Siemens’ flagship tool for multi-physics system modeling enabled hofer powertrain to:

• Create precise models of the dual-parallel hybrid powertrain
• Implement the Hybrid Optimization Tool (HOT) with advanced algorithms
• Automatically generate forward models for dynamic validation

Simcenter HEEDS: World-Class Automated Optimization

Siemens’ multidisciplinary optimization solution provided:

• Automated exploration of 250 design configurations
• Optimization algorithms that identified the optimal configuration
• Parallel analysis of multiple design variables simultaneously

Optimized System Architecture

• Dual-parallel hybrid vehicle equipped with a 1.2-liter internal combustion engine
• Dedicated Hybrid Transmission (DHT) optimized specifically for hybrid applications
• Advanced energy management system combining Pontryagin’s Minimum Principle for offline optimization and Equivalent Consumption Minimization Strategy for real-time optimization

Integrated Workflow with Siemens Technology

The synergy between Siemens tools created an unprecedented optimization process:

1. Simcenter HEEDS automatically manages and varies design parameters
2. Simcenter Amesim HOT calculates optimal control for each configuration
3. The integrated Siemens ecosystem ensures seamless data transfer
4. Automatic generation of the final optimized Simcenter Amesim model

“The native integration between Simcenter HEEDS and Simcenter Amesim was key to the project’s success, eliminating data transfer errors and significantly accelerating the optimization process.”

The Results: Siemens Technology Power in Action

Thanks to the computational power and advanced algorithms of Simcenter HEEDS, which automatically explored 250 different designs, and the precision of Simcenter Amesim for detailed modeling, the results were extraordinary:

Efficiency and Performance Improvements

Metric	Baseline Design	Optimized Design	Improvement
Fuel consumption	5.58 L/100km	5.23 L/100km	-6.3%
0-100 km/h acceleration	8 seconds	7 seconds	-12.5%
Maximum speed in electric mode	54 km/h	140.4 km/h	+160%

Component Optimization

• 38% reduction in motor power scaling factor
• 68% reduction in generator power scaling factor
• 33% improvement in first gear transmission ratio

The Validation: Proven Precision of Simcenter Amesim

The project’s success was confirmed through the robust validation capabilities of Simcenter Amesim:

Integrated Dual Modeling

• Backward model (Simcenter Amesim HOT): High-speed quasi-static optimization
• Forward model (Simcenter Amesim): Dynamic simulation with real transient effects
• Automatic transition between models without data loss

Validated Results

The consistency between both modeling approaches demonstrated the exceptional precision of Siemens tools:

• Optimized consumption: 5.23 L/100km (backward model) vs 5.24 L/100km (forward model)
• Less than 0.2% difference between simulations, confirming software reliability

The Impact: Siemens Ecosystem Transforming the Industry

This success case demonstrates how Siemens Digital Industries Software integrated solutions can:

Accelerate innovation: Drastic reduction in development time through automation
Guarantee precision: Cross-validation between multiple modeling approaches
Optimize resources: 250 designs explored automatically vs. years of physical testing
Drive sustainability: 6.3% less consumption = significant emission reduction

Competitive Advantages of the Siemens Ecosystem

• Native integration between tools eliminates transfer errors
• Scalability for projects of any complexity
• World-class algorithms in multidisciplinary optimization
• Specialized technical support from our strategic partner Siemens

Future Perspectives with Siemens

hofer powertrain continues innovating with the Siemens solutions ecosystem, exploring:

• Simcenter Amesim for battery aging modeling
• Simcenter HEEDS for next-generation modular architectures
• Integration with other Siemens solutions for renewable energy

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Why Choose Siemens Solutions?

Proven Precision: Less than 0.2% differences between models
Development Speed: 250 designs optimized automatically
Total Integration: Complete ecosystem without data loss
Measurable Results: 6.3% less consumption, 12.5% better acceleration

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This success case demonstrates the transformative power of Siemens Digital Industries Software in hybrid vehicle optimization, validating our strategic alliance to deliver the best market solutions.

Ready to revolutionize your hybrid vehicle development? As an authorized Siemens partner, we offer complete access to these world-class tools, along with specialized technical support and certified training.

Bicycles are more than just a mode of transport or a healthy hobby—they are the result of decades of innovation where technology plays a crucial role in making them faster, safer, and more comfortable. At Goaltech Engineering Solutions, proud Siemens partners, we have witnessed and actively contributed to this digital revolution in the cycling industry.

The Challenge: Bringing the Bicycle from the Past into the Digital Future

Since Karl Drais invented the Draisine in 1817, bicycles have evolved dramatically. But the deepest transformation is not only in materials or classic design—it’s in how bicycles are developed today: through the power of simulation software and digital engineering.

Leading manufacturers like Trek, Cervelo, and Ridley rely on advanced solutions to optimize every detail—from aerodynamics to rider safety.

Our Solution: Siemens Software for 100% Digital Development

At Goaltech, we implement and support cycling brands with Siemens solutions that transform the design and validation process:

• GPU-accelerated Simcenter CFD: Enables simulation of airflow around frames and components, optimizing aerodynamics to reduce drag and increase speed. Trek, for example, uses these tools to analyze hundreds of configurations and perfect rider and accessory positioning.
• Structural simulation and impact testing: Using Simcenter technology, we perform advanced helmet impact and rotational analysis to maximize protection without sacrificing comfort or weight.
• Thermal and acoustic optimization: Software allows balancing ventilation and thermal comfort in helmets while reducing noise and vibrations in e-bikes for a quiet and enjoyable ride.
• Full system simulation: From ultra-light hydraulic transmissions to electric motors, digital tools enable the design of more efficient and reliable e-bikes, encouraging millions to adopt sustainable mobility.

Tangible Results: Innovation You Can Feel in Every Pedal Stroke

Thanks to these technologies, today’s bicycles are faster, safer, and more comfortable than ever. Advanced simulation reduces development time and costs, accelerates innovation, and improves the end-user experience.

Radiate Engineering & Design AG, for instance, optimized carbon monocoque wheels with Siemens software to reduce drag by 7% and increase stability in crosswinds—a decisive advantage for professional riders.

Why Goaltech and Siemens?

As strategic partners, Goaltech and Siemens provide the tools manufacturers need to lead the digital transformation in cycling. From CFD simulation to structural and acoustic analysis, the software enables agile, reliable, and data-driven development.

In Summary

The future of cycling is digital, and software is the key to unlocking new levels of performance, safety, and comfort. At Goaltech Engineering Solutions, we’re ready to accompany you on this innovation journey with the best technologies on the market.