LOUISVILLE, Ky. — The new Paccar MX engine for Class 8 vehicles was a highlight of Peterbilt and Kenworth press conferences at the Mid-America Trucking Show here. The truck makers touted the engine’s design excellence and industry leading performance, reliability and fuel efficiency for both vocational and on-highway vehicles.
The new engines will be available beginning in summer 2010.
“The Paccar MX leverages the corporation’s 50 plus years of engine development and manufacturing expertise, over 50 million test miles and the over 125,000 Paccar MX engines operating globally,” said Bill Jackson, Peterbilt general manager and Paccar vice president. “The Paccar MX takes our trucks to the next level of integration and optimization and the high degree of performance is synonymous with the class and quality the industry has come to expect from Peterbilt.”
The Paccar MX engine is available with a horsepower range of 380hp-485hp and torque outputs up to 1,750 lb-ft with a displacement of 12.9 liters. 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 and vocational applications. The Paccar MX engine uses Selective Catalytic Reduction (SCR) in combination with exhaust gas recirculation (EGR) to meet the EPA 2010 diesel engine emissions regulations.
“Kenworth is especially excited to introduce the 2010 Paccar MX engine into the North American market,” said ,” said Jason Skoog, Kenworth director of marketing planning and research. “Excellent fuel efficiency, low cost of ownership, high reliability and durability, and lightweight design make the PACCAR MX engine an ideal choice for both over-the-road line haul and vocational applications.”
The Paccar MX engine is available with a horsepower range of 380 hp to 485 hp and torque outputs up to 1,750 pound feet with a displacement of 12.9 liters.
The Paccar MX is the only commercial diesel engine to use Compacted Graphite Iron (CGI) in both the cylinder block and head. CGI is 20 percent lighter and 75 percent stronger than traditional gray iron. Additionally, the engine utilizes fractured cap technology in both the connecting rods and main bearing caps to provide high shearing strength that result in a wide horsepower range and longer torque and power curves for more efficient operation.
“Proper truck specification and component integration is critical in maximizing vehicle power and efficiency,” said Landon Sproull, Peterbilt chief engineer. “The 2010 Paccar MX provides the engineered optimal set of technologies that are specially designed to increase fuel economy and add savings to our customers’ bottom line.”The Paccar MX has been designed for ease of maintenance, which results in improved efficiency in dealers’ service facilities. More than 525 authorized service locations across North America are certified in the latest technologies and cutting edge diagnostic tools to service and support the Paccar engine family. Additionally, Paccar operates eight parts distribution centers in North America and provides engine technical support 24/7 – 365 days a year.