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More Power To Ride The Rails

Cummins unveils Tier 4 power module; design collaboration with Sygnet Rail Technologies LLC.

Posted on October 15, 2013

Cummins has unveiled a 3132 kW power module for line haul locomotives that the company said meets the Tier 4 railway emissions standards to take effect in 2015. The company also announced that a freight locomotive repowered with the QSK95 Power Module will enter service with the Indiana Rail Road Co. by mid-2014.

The QSK95 Power Module is designed to replace the complete diesel-electric system and car body of the base locomotive as a complete drop-in package, Cummins said. The fully enclosed unit features the QSK95 engine, alternator, cooling system and dynamic braking system, together with an integral selective catalytic reduction (SCR) exhaust aftertreatment that is specifically designed for locomotives.

The power module is the result of design collaboration between Cummins and Sygnet Rail Technologies LLC., to introduce the QSK95 engine with a more compact and efficient 1800 r/min high-speed operation, the company said. It interfaces with locomotive electronics using standard J1939 engine data bus integration and incorporates advanced controls for wheel slip functionality, idle limiting and remote operational reporting.

The 16-cylinder, 95 L engine package incorporates Cummins’ modular common rail system (MCRS) and a quad-turbocharger system with one turbo for each four-cylinder quadrant to provide response to load demands. Tractive power is delivered more rapidly across the entire r/min range to increase acceleration, boost gradient climbing ability and reduce journey times, Cummins said.

As part of the Indiana Rail Road Co. repower, the EMD SD90 base locomotive is currently undergoing refurbishment and will be redesignated as CECX 1919. The locomotive will remain under Cummins’ ownership while operating with the INRD roster and will haul coal or mixed freight across the INRD network, typically hauling 100 cars with a total weight of approximately 12 700 tonnes and working as the lead locomotive in a multiple set.