ELPA - Rail Noise and Wear-Out Reduction TechnologyElpa specialises in tribotechnology for rail noise reduction, solving problems with our rail brake anti-noise system, multi-active rail applicators and rail preservers. We are an innovative and experienced team developing systems that solve worldwide railway problems relating to noise, wear and tear, friction, vibrations, jolts, corrugation, maintenance problems, railway working conditions, etc. Our solutions – supported by revolutionary WONROS noise-reduction technology; BREMEX-ANNSYS, a rail brake anti-noise system; and the CL-E1 application systems for rails – are economically efficient and environmentally friendly. WEAR OUT AND NOISE REDUCTION ON SOURCE (WONROS)Our revolutionary WONROS technology eliminates noise caused by friction between metal surfaces – e.g. wheels, rails and rail brakes – and also helps preserves them from wearing out. The technology is built around patented multi-active rail preserving systems, special heavy-duty appliances, designed with rail maintenance, vandalism and energy independence in mind. We therefore use special long-lasting, temperature-proof and environmentally friendly composite materials, applied on sources of noise. MULTI ACTIVE RAIL PRESERVERS Multi-active rail preservers supported by WONROS technology are effective against:
Elpa's multi-active rail preservers are verified by the TÜV SÜD Rail and SIQ test and certification bodies. CL-E1 WS – WAYSIDE APPLICATION SYSTEM FOR RAILS The CL-E1 ws wayside application system for rails is designed for reduction of noise and wear in rail curves on railways, tramways, metros, etc. Benefits of the CL-E1 ws system include:
Its robust design makes the system efficient against vandalism. CL-E1 UG – UNDERGROUND APPLICATION SYSTEM FOR RAILSCL-E1 ug has most of the same characteristics as CL-E1 ws. However, it is intended for use in town centres (urban areas), because the underground installation does not obstruct surroundings and therefore can not be subjected to vandalism. BREMEX-ANNSYS ANTI-NOISE SYSTEMS FOR RAIL BRAKES During braking, friction between wagon wheels and rail brakes generates disturbing noise. Elpa's BREMEX-ANNSYS system, for use at hump yards, shunting stations, classification yards and marshalling yards, reduces power of noise (squealing) by 99.9%. The BREMEX-ANNSYS system:
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![]() Elpa won the 2004 European Business Award for the Environment. | ||
![]() The CL-E1 ws - a wayside application system for rails; various modifications enable the use of CL-E1 ws on railways, tramways and metros. | |||
![]() The carry-down effect of environmentally friendly composite material can be seen several kilometres from the dosing point. | |||
![]() The CL-E1 ug - an underground application system for rails ideal for reduction of noise in urban areas. | |||
![]() The BREMEX-ANNSYS anti-noise system for rail brakes on a hump yard. |
