The Tognum Group will be showcasing its new-generation, MTU-branded EPA Tier 4i-compliant Series 2000 and Series 4000 diesel engines for oil and gas applications at OTC, the offshore industry trade show taking place May 2-5, 2011 in Houston, Texas (booth 5563). Both engines are able to meet EPA Tier 4 interim emissions requirements solely through the use of in-engine technology. No aftertreatment is necessary. These Tier 4i-compliant engines lay the foundations for the EPA’s Tier 4 final regulations which will apply from 2015.