Industry News

Cummins Tier 4 Field Test Hits 20,000 Hours

January 22, 2010

Cummins Inc. announced that initial results of its Tier 4 interim/Stage 3B field test program after reaching a cumulative 20,000 hours of testing has confirmed up to 5% higher fuel efficiency and improved productivity. The tests were undertaken using equipment operating in commercial service repowered with the company’s integrated air-intake to exhaust aftertreatment system.

In addition to achieving lower cost of operation, Cummins said that field test operators reported improved productivity with faster cycle times. Cummins said that while the engine ratings were the same as the Tier 3 engines replaced, the Tier 4 engines incorporated a Cummins variable geometry turbocharger and enhanced fuel systems. In addition, the Tier 4 equipped machines achieved uptime levels equivalent to Tier 3 engines, the company reported.

"This is the most extensive field test program we have ever undertaken with our off-highway engines," said Hugh Foden, executive director, Cummins Off-Highway Business. "The field test and prototype engine program will continue to expand as we approach a total of 100 Tier 4 interim installations with our OEM partners.”