Improving on the company’s existing U.S. EPA Tier 2-certified product line, Cummins Inc. (NYSE: CMI) says it is developing a full range of Tier 3 products from 6.7 to 60 liters and 150 to 2,700 hp.
The commercial marine diesel engine manufacturer says its Tier 3 solutions apply advanced combustion technology to reduce emissions in-cylinder without the need for after-treatment. Cummins’ Tier 3 marine product line will serve as the platform for future, more stringent emissions in the U.S. and globally.
Representing a 50 percent reduction in particulate matter and a 20 percent reduction in nitrogen oxides compared to Tier 2 standards, the EPA’s Tier 3 marine emissions regulation takes effect Jan. 1, 2012 for Cummins engines between 3.5 and 7.0 liters per cylinder and continues through 2014.
The QSK60 is the only engine in Cummins marine portfolio requiring EPA Tier 3 certification in 2012; the QSK19, QSK38 and QSK50 are not required to meet EPA Tier 3 standards until Jan. 1, 2013.
The Tier 3-certified QSK60 features the same premium base engine hardware and footprint as the existing MCRS product. Further, Cummins says, the lubrication, cooling, air handling, fuel and exhaust systems are the same design as the current 60-liter product ensuring minimum disruption for series-built vessels or replacement engines. As with Tier 2, the Tier 3 engine will be available with Cummins C Command panels, Centinel oil management system and the Eliminator filter to help monitor and reduce operation and maintenance costs.
Cummins says it is able to achieve Tier 3 emissions levels without sacrificing power density. According to Cummins, with Tier 3 certified propulsion, auxiliary and diesel electric ratings between 2,000 and 2,700 hp, the QSK60 is well suited for high-hour demanding applications including offshore support, towing, cargo and passenger transport, as well as ship’s service power.
Engine production is scheduled to begin in early 2012.