26 January 2010
Paccar announced the introduction of the Paccar MX engine to be installed in Kenworth and Peterbilt trucks this summer. The engine, designed to meet the US Environmental Protection Agency’s (EPA) 2010 emission regulations, has accumulated over 50 million test miles in North America, said Paccar.
The Paccar MX engine is available with a power range of 380-485 hp and torque outputs up to 1,750 lb-ft. The engine is intended for both over-the-road line-haul and vocational applications.
The MX engine features a compacted graphite iron (CGI) engine block and cylinder head. An electronically controlled high pressure fuel injection system “delivers excellent fuel economy and assists in achieving the low emissions required by the EPA”. The engine uses selective catalytic reduction (SCR) in combination with exhaust gas recirculation (EGR) to meet the 2010 emission standards.
Paccar has been delivering heavy-duty engines for a number of years in markets outside North America. Over 125,000 MX engines are operating in Paccar’s DAF trucks globally. The Paccar MX engine has also been used in the Chinese coach market. In the European market, Paccar’s Euro IV and Euro V vehicles have operated SCR emission systems for several years.