Technologies for the future
We believe in innovation – with continued investments into research and development Liebherr-Transportation Systems design solutions and components for the future of the railway industry.
Originally, air cycle air conditioning technology was developed for the aerospace industry, where it has been used for more than four decades for air conditioning in aircraft. As one of the very first companies, Liebherr also began employing this technology in rail vehicle equipment. In 2002, Liebherr-Transportation Systems fitted a train of German operator Deutsche Bahn AG (DB) – an ICE 3 – with air cycle air conditioning systems for test runs. Additional fittings for the first model series as well as 13 eight-car trains of the second model series of the ICE 3 followed.Learn more about Liebherr’s participation in the ICE 3
Environment-friendly and successful
Since then, the systems have proven extremely successful in DB's daily passenger transport operations. They are characterized, in particular, by their environmental friendliness, their robustness and their low operating costs. Furthermore, the energy consumption of air cycle air conditioning systems is extremely low compared with conventional systems. This has been verified, among other ways, through comparative measurements by DB.
The very successful results of the air cycle air conditioning systems are not only an affirmation for Liebherr-Transportation Systems, but also an incentive to work intensively on further developing air cycle technology and to make it usable for a wider spectrum of applications.
Li-Ion battery cooling system
Liebherr-Transportation Systems have been selected by the rail vehicle manufacturer Bombardier Transportation GmbH of Mannheim (Germany) to develop and produce a compact and reliable cooling system for an innovative Li-Ion battery.
These batteries will be employed in the next generation of electric drive systems, which are set to power urban transit buses and light-rail vehicles in the future. The highly efficient cooling system will ensure that the battery runs under optimal thermal conditions. Prototypes of the system are being tested both at Liebherr's ultramodern test facilities and on demonstrator vehicles at Bombardier.
The Li-Ion battery is an integral component in Bombardier’s highly innovative inductive battery charging system PRIMOVE®. This system enables the main battery of the electric drive system to be recharged without contact to the trolley wires, so the vehicle does not have to interrupt its operation. The battery charging system will play a major role in reducing CO2 emissions in urban traffic.
For more than one decade, Liebherr has successfully integrated the BK3 controller in heating, ventilation and air-conditioning systems (HVAC) and hydraulic applications globally. Due to evolving requirements from the railway industry Liebherr-Transportation Systems have developed a replacement controller: the BK4 microprocessor controller with modern interfaces and more capabilities in a smaller package.
This controller’s capabilities cover all current and forecast needs regarding the HVAC systems, the hydraulic systems and obsolescence topics for the future. BK4 will also feature optimal adjustment to the controlled system due to its scalability. It can also adapt to different train network and maintenance interfaces.
Industry-standard interfaces and capabilities as well as centralized application software approach enable to achieve a cost-effective solution for a complete system.
The Universal HVAC Standard for Multiple Railway Platforms
Liebherr-Transportation Systems has developed a modular air conditioning system which responds to the most challenging market requirements of the railway industry.
MACS 8.0 provides the highest degree of standardization. The modular architecture of MACS 8.0 allows flexibility and adaptability to serve diverse rolling stock applications.
- Multi-platform standard
- Standardized design
- Flexible configuration
- Flexible service concepts
- Availability secured by modularity
- Cost efficient operation
- Constantly evolving product
- Future-proofed HVAC standard anticipates new cooling technologies
- Flat profile: just 220 mm high
- Weighs only 125 kg per module
- 70 % greater cooling power density
- 8 % less power consumption