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Cummins receives Tier 4 locomotive certification for QSK95 engine

8 April 2016

Cummins announced that it has received Tier 4 Locomotive certification for its QSK95, making it the first single prime power engine certified by the US Environmental Protection Agency (EPA) to the locomotive emission standards.

At 4400 hp (3281 kW), the QSK95 achieves the highest output of any 16-cylinder high-speed diesel—according to Cummins—and is capable of a top speed of 125 mph (201 km/h) as a prime mover.

Combining Cummins modular common rail fuel system (MCRS) and quad-turbocharging, the QSK95 features a smaller footprint than that of medium-speed diesels traditionally used in locomotives—said the company. The QSK95 achieves the Tier 4 NOx emission limits using integrated selective catalytic reduction (SCR) aftertreatment.

Cummins QSK95 diesel engine

The QSK95 powers Siemens® Charger locomotive—a diesel-electric passenger locomotive that will be put into service by the Departments of Transportation in Illinois, California, Maryland and other states, as well as by Brightline™, a privately owned and operated passenger rail service that will connect Miami and Orlando.

Source: Cummins