Kenworth said it is enhancing its engine lineup for 2013 with the addition of the next generation of PACCAR proprietary engines, which are designed to deliver industry-leading performance, reliability and fuel efficiency.
According to the truck maker, its customers can now specify the new PACCAR MX-13, PACCAR PX-9 and PACCAR PX-7 engines on new Kenworth truck orders placed through Kenworth dealers in the U.S. and Canada for delivery in 2013.
The 12.9-liter PACCAR MX-13 engine is designed to meet the demands of heavy-duty truck applications, the company said, and is available for Kenworth Class 8 models, including the Kenworth T660, T680, T700, T800 and W900. It utilizes the latest common rail, fuel-delivery technology, which enables injection pressures of up to 2,500 bar and significantly enhances fuel efficiency and performance, the company said. The common rail fuel system uses controls to regulate the fuel in a central manifold, only compressing the amount of fuel mixture needed. The result is finer fuel atomization and more ways to optimize combustion, ensuring the lowest possible fuel consumption, emission and noise levels.
The 8.9-liter PACCAR PX-9 engine is available for Kenworth medium- and heavy-duty trucks, including the Kenworth T270, T370, T440, T470 and W900S. It possesses one of the highest power-to-weight ratios in its class, with heavy-duty features such as replaceable wet liners, roller cam followers, bypass oil filtration and targeted piston-cooling, according to the company. The PX-9 offers ratings from 260 to 380 HP and provides up to 1,250 ft.-lb. of torque. The engine delivers the durability and efficiency necessary to help lower operating expenses, reduce maintenance and increase productivity, Kenworth added.
The 6.7-liter PACCAR PX-7 engine is available for Kenworth’s medium-duty conventional and cabover line-up. The engine offers ratings of 200 to 325 HP and up to 750 ft.-lb. of torque for the Kenworth T170, T270 and T370. For the Kenworth K270 and K370 cabovers, PACCAR PX-7 ratings are 220 HP/520 ft.-lb., 240 HP/560 ft.-lb. and 250 HP/660 ft.-lb. According to Kenworth, this engine delivers superior performance, minimizes operational costs and maximizes uptime for medium duty customers.
The PACCAR MX-13, PACCAR PX-9 and PACCAR PX-7 replace the PACCAR MX, PACCAR PX-8 and PACCAR PX-6, respectively. The new engines are undergoing extensive testing and dealer service technicians will receive engine training to help provide customer support, the company added.
