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Cummins Tier 4 QSB6.7 Wins Gold Award for Design Leadership

By Cummins   


Nov. 26, 2008 - Columbus, Ind - 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.

"We are very proud to be recognized with gold and silver LLEAP awards which highlight how Cummins Tier 4 design approach has taken a lead role in the off-highway equipment industry with a fully integrated air intake to exhaust aftertreatment solution," said Ric Kleine, Vice President of Cummins Off-Highway Business.


"Our next-generation engines such as the QSB6.7 go beyond meeting the stringent 2011 emissions levels to lower the cost of ownership for operators and enhance equipment productivity. We are able to achieve this because we have access to the Tier 4-enabling technologies, all from within Cummins own resources."

"This single-source capability to design, manufacture and integrate the key components is reflected by the LLEAP innovation award for the Cummins Direct Flow engine air filter," added Kleine.

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