Equipment Type

Cummins Q Series Meets Tier 4-Final Using Aftertreatment

Cummins’ Q-series diesels will meet federal Tier 4-Final and Euro IV limits in 2014 with exhaust aftertreatment systems.

March 25, 2011

Cummins’ Q-series diesels will meet federal Tier 4-Final and Euro IV limits in 2014 with exhaust aftertreatment systems.
 
The QSL9, with up to 400 horsepower, gets a Cummins Compact Catalyst and selective catalytic reduction, for almost emissions-free exhaust. This CCC-SCR system, in scalable sizes, also goes on QSB3.3, 4.5 and 6.7 models, rated at 75 to 400 horsepower.
 
The QSX15 and 11.9 engines will use SCR and a diesel particulate filter. The 15’s top rating is 675 horsepower, 75 more than the Tier 4-Interim model, and the 11.9 goes to 525 horsepower.
 
Tanks for SCR’s diesel exhaust fluid will vary in size by OEM. More than 50 OEMs have committed to using Cummins power in 2014, executives said.

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