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Cummins Unveils Tier 4 Power Module For Rail

Posted on September 29, 2013

At the Railway Interchange Show in Indianapolis, Cummins unveiled a 4200 hp (3132 kW) power module for line haul locomotives that the company said meets the Tier 4 railway emissions standards that 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 carbody of the base locomotive as a complete drop-in package. The fully enclosed unit features the QSK95 engine, alternator, cooling system and dynamic braking system, together with integral selective catalytic reduction (SCR) exhaust aftertreatment specifically designed for locomotives.

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

"By working together, Cummins and Sygnet Rail Technologies combine the latest in Tier 4 engine technology with a universal drop-in power module that is adaptable for many locomotives independent of original manufacturer, allowing for simpler and faster repowers," said Ed Pence, vice president and general manager - Cummins High-Horsepower Engine Business.

The 16-cylinder, 95 L engine package incorporates Cummins latest-generation modular common rail system (MCRS) and a quad-turbocharger system with one turbo for each four-cylinder quadrant to provide outstanding response to load demands, with tractive power delivered more rapidly across the entire rpm 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 will be redesignated as CECX 1919. The locomotive will remain under Cummins ownership while operating with the INRD roster. The repowered locomotive will haul coal or mixed freight across the INRD network, typically hauling 100 cars with a total weight of around 14,000 tons and working as the lead locomotive in a multiple set.