Westport says natural gas engines cleaner than diesels
Westport Innovations Inc. says that the Cummins Westport 15-liter ISXG and 11-liter ISMG natural gas powered engines are expected to have significantly lower emissions than the certification requirements for heavy-duty diesels laid down by EPA for October 2002. In a presentation to delegates at the World Natural Gas Vehicle conference in Washington, DC, CTO Patric Ouellette said the engines offer