MTU Onsite Energy Corporation

Understanding the provisions of the current Tier 4i and future Tier 4 Final EPA standards is important for diesel power system specifiers and owners, especially in EPA nonattainment areas and non-emergency stationary power applications. The paper explains that for applications other than ESP, Tier 4 regulations for generator sets are being phased in two steps, beginning with Tier 4 I in 2011.  Applications included are load management/peak-shaving, prime power, mobile rental power and spark-ignited engine generators used in non-ESP applications.  Diesel generators used for emergency power in California and non-attainment areas throughout the U.S. are subject to the Tier 4 standards.  The document also reviews the in-engine design changes and exhaust

To download, please click here.