BERLIN (September 18, 2012) -

Cummins Inc. (NYSE: CMI) today revealed the new QSK19-R engine with 755-hp (563 kW) at InnoTrans, Berlin with an integrated Selective Catalytic Reduction (SCR) aftertreatment, meeting U.S. EPA Tier 4 and European Stage IIIB Railcar very low-emissions regulations taking effect in 2015. The 6-cylinder, 19-liter engine and SCR aftertreatment is available ready for incorporation within a Cummins-designed underfloor railpack for installation in Diesel Multiple Unit (DMU) railcars.

The new generation QSK19-R engine delivers upgraded performance from the  Cummins Modular Common Rail Fuel System (MCRS), driven by full-authority electronic controls.  The MCRS system allows for a more efficient, quieter performing engine with reduced vibration due to precisely balanced fueling across the cylinders. This improved engine characteristics, together with very low emissions makes the QSK19-R ideally suited for DMUs operating in urban areas with frequent station stops and starts.

While achieving very low emissions, no compromise is made to power output compared to the current QSK19-R engine meeting Tier 2 emissions, by far the most widely used engine of its type with over 1700 units in-service with DMU railcar operators worldwide.

The proven base engine is upgraded for Tier 4 / Stage IIIB with a cooler operating piston and even more premium materials to extend the life-to-overhaul interval beyond that achieved by the best-in-class durability of the Tier 2 engine. The multiple rebuild capability of the QSK19-R has played a major role in lowering the total cost of operation of DMUs, typically running very high hour duty cycles under high load factors.

“With improvements made on the base Tier 2 engine design, the new QSK19-R will continue  to set the standards for horizontal railcar engines as we move to the next level of emissions requirements,” said Randy Nelson, Marketing Director – Cummins Rail Business.                                           

“Our customers have grown to expect a high level of durability and reliability from their Cummins engines and we are confident that this engine will not disappoint. We   believe that this new generation of the QSK19-R will provide an excellent opportunity to introduce DMU’s to the North American public transportation market,” added Nelson. 

Cummins Integrated Railpack
The QSK19-R and SCR aftertreatment system is ready to be integrated within a Cummins designed railpack offering the low-profile, compact envelope required for underfloor DMU  railcar installations. The robust railpack frame includes cooling packages, alternator, air filtration and exhaust aftertreatment all in a package with standardized connection and mounting points. The railpack can be quickly demounted and offers ease service access.  

The Cummins turbocharger and the cylinder head mount of the engine is designed with additional robustness to completely relieve the exhaust manifold of the support stresses, typically associated with horizontally installed railcar engines.

Cummins Selective Catalytic Reduction
The QSK19-R is integrated with a Cummins SCR aftertreatment system specially developed for the engine to enable a more compact installation and provide the required sound attenuation without the need for an additional silencer. 

The Cummins SCR is a durable, fully integrated package specifically developed by Cummins Emission Solutions for high-horsepower applications. The SCR aftertreatment operates as a fully passive, flow-through system and is capable of high NOx conversion  with low backpressure, enabling enhanced fuel economy.

The Cummins SCR clean exhaust system utilizes an innovative DEF decomposition process to significantly reduce space claim and benefit overall equipment integration while ensuring that low NOx emissions levels are achieved. The SCR system also features an integral DEF dosing injector with a high-efficiency spray pattern.

SCR logic control is driven by the QSK electronic engine management system, upgraded with extra processing power for Tier 4 Final/Stage IIIB so that the engine and  SCR aftertreatment operate as a single, integrated system.

About Cummins Inc.
Cummins Inc., a global power leader, is a corporation of complementary business units that design, manufacture, distribute and service engines and related technologies, including fuel systems, controls, air handling, filtration, emission solutions and electrical power generation systems. Headquartered in Columbus, Indiana (USA), Cummins employs approximately 44,000 people worldwide and serves customers in approximately 190 countries and territories through a network of more than 600 company-owned and independent distributor locations. Cummins earned $1.85 billion on sales of $18.0 billion in 2011. Press releases can be found on the Web at or Follow Cummins on Twitter at on YouTube at