The MTU Series 4000 long-stroke Ironmen engine is available with 8, 12 and 16 cylinders and covers power outputs from 700-2,240kW (940-3,000bhp). It is used in workboats, tugs, inland waterway vessels, ferries, and governmental vessels. The engine is currently being developed for compliance with US emission-stage EPA Tier 3 regulations, with outputs from 560-2,000kW (750-2,680bhp). EPA Tier 3 requirements will be met without the need for exhaust aftertreatment.
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