IMI has introduced a new three-stage filtration system able to deliver more than 92% efficiency in demanding locomotive environments.
The advanced system for 12,000hp locomotives delivers unrivalled performance alongside sector-leading reliability in rugged, high-dust, high-vibration environments, with strong sustainability credentials too.
With the initial customer brief for a solution which met stringent EN standards, without compromising on efficiency with reduced end to end pressure drop, the filtration system protects traction motors and sensitive equipment from prolonged exposure to water, dust, and debris, while maintaining robust reliability and ease of maintenance.
Working with the customer, the IMI team in Noida designed and developed a bespoke three-stage system to ensure optimal engine protection. The solution comprises a louver, which prevents water and large particles from entering the intake, while proprietary cyclonic filtering technology harnesses centrifugal force to remove dust. Finally, a woven media filter delivers clean, dry air to the engine system, protecting against both wear and dust deposition or accumulation.
IMI’s vertically integrated process enabled a fast-track approach with total control over design, testing and production, delivering exceptional quality, speed and cost optimisation.
The development process involved the creation of a purpose-built test rig simulating real locomotive airflow and allowing the team to test to ISO 5011 standards. Following design optimisation, IMI’s engineering team manufactured the filtration system in full compliance with EN61373, EN45545, and EN15085 standards.
The result is a system which delivers 20% lower pressure drop than competitor systems, making for optimised airflow and lower overall system resistance, energy efficiency, supporting enhanced engine output and reliability.
The cyclonic tubes utilise chemical- and heat-resistant materials, offering a design life exceeding 30 years. Furthermore, the unit guarantees durability against salt spray for 960 hours. To reduce lifecycle costs, the modular design allows for rapid servicing and simple part replacement. Furthermore, the clean air intake reduces emissions and contributes to more efficient locomotive operation, with a positive impact on sustainability.
Chris Showering, Product Management & Marketing Head Global Rail, at IMI, explains: “In today’s rail industry, performance, reliability and sustainability are critical. This project highlights our ability to harness deep collaboration and advanced engineering to transform complex technical needs into real-world performance – through a complete, end-to-end solution that has not just met but exceeded customer expectations.
“At our global manufacturing sites, including Noida, we are delivering solutions that not only meet today’s challenges but are also shaping rail filtration technology through targeted innovation, which delivers scalable, repeatable solutions.
“As global rail networks continue to expand and modernise, IMI is ideally placed to lead. not just in product delivery, but in defining the future of performance-critical rail systems, through full-vehicle support from component design to system-level integration.”
For further information, visit https://www.norgren.com/en/industries/rail
