COLUMBUS, IN - Cummins Inc. Tier 4 QSB6.7 engine with integrated air intake to exhaust aftertreatment technology has won a gold award for design leadership in the LLEAP 2008 awards, taking first place in the systems category. A double award success has been achieved by Cummins with the new Direct Flow air filter on the QSB6.7 recognized with a silver award in the LLEAP innovative components category.

The award-winning 6.7-liter QSB engine incorporating the Direct Flow engine air filter and Cummins Particulate Filter exhaust aftertreatment was revealed at the CONEXPO show held in Las Vegas in March this year. The QSB6.7 captured industry attention as the first fully integrated system shown ready to meet U.S. EPA Tier 4 Interim and European Stage IIIB off-highway low-emissions regulations taking effect in January 2011.

A performance-enhancing High Pressure Common Rail fuel system and Variable Geometry Turbocharger enable the Tier 4 QSB6.7 to increase top-rated power to 300 hp (224 kW), representing a power output more typical of a larger-displacement engine. Cleaner, more efficient combustion reduces fuel consumption by up to 5 percent, dependent on rating. The Direct Flow air filter improves air flow efficiency and dust protection for the engine.

Held annually, the LLEAP awards (Leadership in Lifting Equipment and Aerial Platforms) are sponsored by Lift and Access magazine to recognize innovative products or design concepts advancing the industry. The LLEAP awards are judged by a panel of respected equipment rental professionals and industry consultants.

Performance-Enhancing Technology
Advanced in-cylinder combustion with lower fuel consumption is achieved for the Tier 4 QSB6.7 by utilizing cooled Exhaust Gas Recirculation (EGR) together with the High Pressure Common Rail fuel system. Cooled EGR works by recirculating a varying proportion of the exhaust gas back to the cylinder. This reduces the oxygen content to lower combustion temperature with a resulting 45 percent reduction in NOx formation.