Aug 27, 2014
Home| Tools| Events| Blogs| Discussions| Sign UpLogin

Cummins Extends Engines to Meet Next Level of Emission Standards

April 20, 2009

Cummins announces 4-cylinder QSB3.3 and QSB4.5 engines will meet EPA Tier 4 Interim off-highway emissions in 2012. These engines range from 75-hp to 160-hp.

The lower emissions are achieved by using cooled Exhaust Gas Recirculation (EGR) for NOx control and exhaust aftertreatment for removing particulate matter. The 4-cylinder models were built with a more compact and simplified version of the Tier 4 Interim technology for the 6-cylinder QSB6.7 engine.

The High Pressure Common Rail (HPCR) fuel system employed on the Tier 3 QSB3.3 and QSB4.5 is already capable for Tier 4 Interim and will require no major change. An upgraded turbocharger with electronic control will be utilized to manage EGR flow across the entire engine rpm range. These engines retain the same 3.3- and 4.5-liter platforms and will be supplied as a fully integrated air-intake-to-exhaust system.

The particulate aftertreatment unit designed by Cummins for the Tier 4 Interim QSB3.3 and QSB4.5 removes more than 90% of particulate matter. The unit replaces the muffler in the exhaust stream and offers equivalent noise reduction, and it can be installed vertically or horizontally.

For more Information: Cummins

See Comments

RELATED TOPICS: Machinery, Engines

Log In or Sign Up to comment


No comments have been posted



Receive the latest news, information and commentary customized for you. Sign up to receive Dairy Today's eUpdate today!



Market Data provided by
The Home Page of Agriculture
© 2014 Farm Journal, Inc. All Rights Reserved|Web site design and development by|Site Map|Privacy Policy|Terms & Conditions