Installations With Up To 5400 HP Will Introduce Ultra-Clean Rail Diesels To North America   

COLUMBUS, Ind. (Sept. 11, 2014) – Cummins Inc. (NYSE: CMI) will power the rail industry forward to meet U.S. Environmental Protection Agency (EPA) Tier 4 emissions regulations with over 100 installations on order for passenger locomotives, diesel multiple unit (DMU) railcars and switcher locomotives in North America. The Cummins Tier 4 installations will bring to the track ultra-clean diesel power with quieter operation and a lower carbon footprint.

The Tier 4 rail vehicles on order extend from 1200 hp (895 kW) up to 5400 hp (4027 kW) of installed power, featuring the latest generation of Cummins 15-liter to 95-liter engines with integrated Selective Catalytic Reduction (SCR) exhaust aftertreatment. The installations include both single- and innovative multi-engine designs with a power-on-demand capability to significantly reduce fuel consumption and carbon emissions.  

The EPA Tier 4 regulations take effect Jan. 1, 2015, for line-haul locomotives, with particulate matter (PM) and oxides of nitrogen (NOx) emissions reduced by over 70 percent compared with the current Tier 3 regulations. For Tier 4-compliant railcars, PM and NOx emissions levels are reduced by over 90 percent compared with Tier 3.     

The Tier 4 installation orders were awarded to Cummins following an in-depth competitive evaluation by both rail vehicle manufacturers and rail operators. Cummins Tier 4 technology scored highly over medium-speed and other high-speed engines in terms of installation ease and lower operating costs while meeting vehicle targets for high speed, rapid acceleration and extended life-to-overhaul.

“With over 100 Tier 4 locomotive, switcher and railcar installations already on order, this means that Cummins will power almost every Tier 4 passenger rail project underway in North America, and we have hundreds of additional installation options under consideration,” said Randy Nelson, Manager – Cummins Rail Business Development.

“This early Tier 4 success clearly demonstrates that our customers recognize that we have  the right technology to meet their installation, operational and economic requirements – adding up to a very attractive package for both new vehicles and repowers,” added Nelson.  

The first Tier 4 ultra-low emissions demonstration project with Cummins power has been up and running since 2013, with the NREX 2015 gensetswitcher built by National Railway Equipment Co.® The switcher features twin-QSX15 engines providing 1200 hp (895 kW) of installed power. A freight locomotive repower project with the QSK95 is currently underway, with a power output of 4200 hp (3132 kW). The Cummins CMX 1919 locomotive will operate on commercial service with Indiana Rail Road Co. 

Tier 4 On Track
The first all-new Tier 4 vehicle is scheduled to enter revenue service in January 2015 for the air-rail link currently under construction from downtown Toronto to Toronto Pearson International Airport, connecting the two busiest transportation hubs in Canada with a fleet of 18 railcars built by Nippon Sharyo® U.S.A. The DMU has a three-car, three-engine configuration with an underfloor QSK19 installation totaling 2280 hp (1700 kW) output.

A similar fleet of railcars will also be delivered to Sonoma-Marin Area Rail Transit (SMART) north of San Francisco Bay, running on a new line currently under construction. The SMART project and the Toronto air-rail link will bring the first modern DMU configurations to North America.

The introduction of the Charger™ passenger locomotive in 2016 will mark the arrival of Siemens® into the North American diesel-electric locomotive market with an initial 35 locomotives on order for operation in five of the United States. The new Charger is powered by a Cummins 4400 hp (3281 kW)-rated Tier 4 QSK95 and is capable of a top speed of 125 mph (201 km/hr).

A fleet of MP40 commuter locomotives will be repowered by MotivePower Inc.® for GO Transit in Toronto to meet Tier 4 emissions regulations with a highly innovative twin-engine Cummins QSK60 installation totaling 5400 hp (4027 kW).   

Multi-Engine Innovation
The Cummins Tier 4 installations include innovative multi-engine designs able to provide a power-on-demand response to varying load factors, resulting in major fuel savings with a significantly reduced carbon footprint. The power flexibility enables switcher locomotives to power down to single-engine operation for lighter load factors or when at idle. Twin-engine passenger locomotives can run on both engines at peak times with more passenger cars, and then switch to single-engine operation for off-peak with fewer cars. 

Ultra-Clean Technology
TheSCR aftertreatment removes NOx from the exhaust stream, and is designed by Cummins with a highly adaptable configuration so it can occupy a very similar space claim to that of the exhaust silencers typically used today. As a result, the SCR brings a drop-in capability for both new and repowered vehicles. Tier 4 installation is also made easier due to an engine envelope and cooling requirement almost identical to those of the engines currently in service. 

The use of SCR aftertreatment in the exhaust stream to reduce NOx emissions to extremely low levels enables the engine combustion recipe to more easily focus on reducing PM and improving fuel efficiency. That approach also brings a significant benefit in terms of reliability and durability, as the SCR aftertreatment allows the engine to operate within a lower range of cylinder pressures and temperatures compared with an engine solution relying on Exhaust Gas Recirculation (EGR).

The Tier 4 engines also achieve smoother running and quieter operation due to more precise control over fuel injection events and the combustion formula. Oil mist is eliminated with an integral breather device on the engine.  

About Cummins Inc.
Cummins Inc., a global power leader, is a corporation of complementary business units that design, manufacture, distribute and service diesel and natural gas engines and related technologies, including fuel systems, controls, air handling, filtration, emission solutions and electrical power generation systems. Headquartered in Columbus, Indiana, (USA) Cummins currently employs approximately 48,000 people worldwide and serves customers in approximately 190 countries and territories through a network of approximately 600 company-owned and independent distributor locations and approximately 6,500 dealer locations. Cummins earned $1.48 billion on sales of $17.3 billion in 2013. Press releases can be found on the Web at cummins.comor Follow Cummins on Twitter at and on YouTube at