Paccar announced the introduction of the Paccar MX engine to be installed in Kenworth and Peterbilt trucks this summer.

The MX is designed to meet the Environmental Protection Agency's 2010 emissions regulations and has accumulated over 50 million test miles in rigorous and severe conditions in North America. Jim Cardillo, Paccar president, notes that more than 125,000 Paccar MX engines are successfully operating in DAF trucks globally.

The Paccar MX engine is available with a horsepower range of 380 to 485 horsepower and torque outputs up to 1,750 pounds-feet. Paccar officials believe this power range, combined with excellent fuel efficiency, high reliability, durability, lightweight design and low cost of ownership, makes it an ideal choice for both over-the-road line-haul and vocational applications.

Paccar also pioneered the design and manufacture of high-strength compacted graphite iron (CGI) used in the MX engine block and cylinder head, according to Craig Brewster, Paccar assistant vice president. "This premium material is more durable and lighter than conventional gray iron, resulting in superior power-to-weight performance," he said. "The electronically controlled high pressure fuel injection system delivers excellent fuel economy and assists in achieving the low emissions required by the EPA. The engine's block design and rear gear train contributes to significantly lower in-cab noise levels resulting in a more comfortable driver environment. The integral engine brake provides powerful performance across a broad range of engine rpms."

The MX engine uses selective catalytic reduction (SCR) in combination with exhaust gas recirculation (EGR) to meet the EPA 2010 diesel engine emissions regulations.

Kenworth, Peterbilt and DAF dealers have certified Paccar MX trained technicians and a complete inventory of service parts.

More info: www.paccar.com