EPA approves Rolls-Royce marine natural gas engine for sale in US
Green Car Congress
SEPTEMBER 4, 2012
The United States Environmental Protection Agency (EPA) has approved for sale in the US market marine natural gas engines designed to improve fuel efficiency, cut methane slip emissions and meet strict international environmental standards set to take effect in 2016. 9-cylinder version of Rolls-Royce marine gas engine in engine room.
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