Verona, Italy (March 5, 2008) - Cummins are exhibiting key technologies that will be used to meet stringent European Stage IIIB and US EPA Tier 4 Interim off-highway emissions standards. These will take effect across the key power category of 130 to 560 kW (174-751hp) in 2011. Core technology displayed will include Cummins Particulate Filter and cooled Exhaust Gas Recirculation (EGR) as part of an integrated technology solution extending from air intake to exhaust aftertreatment. Other engine enhancements on show will include the Cummins Variable Geometry Turbocharger (VG Turbo and High Pressure Common Rail (HPCR) fuel systems.

Hugh Foden, Cummins Executive Director - Engine Business said, "Our Stage IIIB solution has been driven by the need to deliver the most productive power solutions with the lowest cost of ownership. Common architecture will extend from the 6.7 litre QSB to the QSX engines. We expect Cummins Stage IIIB product range to maintain or increase power outputs compared to Stage IIIA, with an added benefit in fuel efficiency."

Cummins will achieve Stage IIIB Interim emissions levels by developing an integrated engine and aftertreatment solution, where the engine combustion recipe works with the aftertreatment filter in reducing particulate matter (PM) and oxides of nitrogen (NOx). Seamless electronic control of the entire system is driven from an upgraded engine electronic control module.

The Cummins Particulate Filter reduces particulate matter emissions by the required 90%. The PM is collected on the filter and oxidized gradually by catalytic passive regeneration to exit the filter as clean exhaust gas.

Cummins in-house capability has been applied in developing core programs and algorithms for controlling the particulate filter from the upgraded engine control module.

Cummins cooled EGR is an engine-integrated subsystem that enables the required 45 % reduction in NOx to be achieved. EGR works by re-circulating a varying proportion of the exhaust gas back into the cylinder, which reduces the oxygen content to lower combustion temperatures. It is used in tandem with Cummins VG Turbo to provide superior engine response by varying air flow boost to engine rpm speed, load demands and exhaust gas recirculation rates. Combined with the precision control of the High Pressure Common Rail (HPCR) fuel system, fuel consumption should be reduced by up to 5% dependent on engine rating and duty cycle.

Across its entire lineup of off-highway engines, Cummins is able to meet increasingly stringent emissions regulations with speed and efficiency, due primarily to two competitive advantages.

First, Cummins benefits from an integrated business structure that enables it to tap the core competencies of Cummins Emission Solutions, Cummins Turbo Technologies, Cummins Fuel Systems and Cummins Filtration. These businesses work together to bring to market technologically superior, fully integrated systems. Second, Cummins benefits from its worldwide experience and leadership with a wide range of proven technologies. Cummins continues to execute its carefully planned product strategy, anticipating changes and investing in the research and development necessary to meet customer needs and environmental goals.

"Equipment manufacturers will be able to take advantage of specifying a single-source Stage IIIB power system from Cummins, extending from the air intake filter system to exhaust aftertreatment. Our ability to design, manufacture and integrate all the key subsystems provides significant benefits for both OEMs and end users." adds Foden.

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 serves customers in more than 160 countries through its network of 550 company-owned and independent distributor facilities and more than 5,000 dealer locations. Cummins reported net income of $739 million on sales of $13 billion in 2007.