According to Cummins, its High Pressure Common Rail fuel system can be employed to meet the Tier 4 Interim while the compact cooled EGR system and the after-treatment unit have been designed for these four-cylinder platforms specifically.
Four-Cylinder Diesels Meet Tier 4 Interim Standards Anonymous Engineering and Mining Journal; Jun 2009; 210, 5; Docstoc pg. 76 Reproduced with permission of the copyright owner. Further reproduction prohibited without permission.
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