Fit for US EPA Tier 4 i emissions requirements

摘要

Since the middle of 2011, MTU has offered the new generation Series 4000 in the 1678 to 1864 kW power range primarily for use in hydraulic fracturing pumps.The engines meet the US EPA Tier 4 interim emission standard currently in force without the use of exhaust treatment systems.They need as much as 5% less fuel than their predecessors and offer higher torque in the low rev band combined with an opti-mum power-to- weight ratio. These models form the basis for the engines that MTU is currently developing for the even stricter US Tier 4 final regulations that will come into force in 2015.