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The passenger in focus

July 2020

The passenger in focus
Air conditioning systems can, for example, be integrated into the roof of the vehicle. Photo: PESA

Travellers want to reach their destination in comfort and without stress and noise. railways can keep up with this. A range of systems and solutions from KnorrBremse are already helping to make train travel more comfortable, quieter and easier.

Knorr-Bremse’s subsidiary IFE is developing variable entrance systems for regional and high-speed trains as well as for S-Bahn trains. Folding, sliding or swivelling steps help to ensure rapid, effortless and safe boarding. There is currently increasing pressure from the German public transport sector to install such systems throughout the country. The goal is to achieve full accessibility of public transport by 2022.

Less noise and draught thanks to new sealing systems

IFE has improved the sound insulation of its new generation of both exterior and pocket type sliding doors and has achieved a significant reduction of noise levels in passenger compartments. While conventional seals only close at the lateral edges of the doors, a device lifts the door leaf before closing, thereby sealing its upper and lower edges. In addition to improved noise insulation, this also reduces the volume of cold air that is forced into the vehicle – especially at high speeds. Train crews can thus control the temperature in the passenger compartments in a more energy-efficient way. Passengers can enjoy travel at a constant temperature and without a cold draught.

 

A pleasant temperature: the right climate in every situation

The world’s leading HVAC systems from Knorr-Bremse subsidiaries Merak and Kiepe Electric make it possible to adapt the atmosphere in the vehicles to seasonal, weather and outside temperature conditions. In Europe, the systems are rather inconspicuous. Here, travellers find it unpleasant if there is too big a change between the outside ambient and interior temperature. In particularly sultry and hot areas with high humidity, however, passengers often want a clearly noticeable cooling effect with a high level of air circulation. And since the systems can be operated with the almost climate-neutral refrigerant CO2 (R744), they offer an additional contribution to environmental protection. gentle braking for a smooth travelling experience.

The so-called stopping jerk was previously considered unavoidable, as the friction coefficient of brake pads increases rapidly at low speeds. Thanks to an even more intelligent braking system design, smooth braking is now achieved through perfect control that practically eliminates any jerk transmitted along the train. Even when the classic disc brake is blended in to substitute the electrodynamic brake at low speeds, this goes unnoticed by passengers. In the course of the next generation of brake control systems, Knorr-Bremse is working to ensure that braking is as even as possible over the entire speed curve, regardless of fluctuations in the systems involved.