The Cummins QSK-95 Tier 4 engine features a Selective Catalytic Reduction, or SCR, system. Less complex than exhaust gas recirculation systems, SCR enables the QSK-95 to work at lower operating temperatures, use a smaller cooling system, and achieve better fuel economy. These benefits deliver longer engine life and better locomotive availability. Learn more at cummins.com slash rail.
Cummins
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SCR', 'SELECTIVE CATALYTIC', 'REDUCTION'
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LONGER ENGINE LIFE', 'BETTER LOCOMOTIVE AVAILABILITY'
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QSK95 SCR Technology Video