Paccar has launched new power, torque and fuel efficiency enhancements to its MX-13 and MX-11 engines for North America, plus introduced a new proprietary tandem drive axle.
The announcements were made at the 2016 American Trucking Management Conference & Exhibition in Las Vegas.
Paccar (www.paccar.com) is a global technology leader in the design, manufacture and customer support of high-quality light, medium and heavy duty trucks under the Kenworth, Peterbilt and DAF nameplates. It also designs and manufactures advanced diesel engines, provides financial services and information technology, and distributes truck parts related to its principal business.
Engines
The new engines – which will be available in Kenworth and Peterbilt trucks in January 2017 – “are designed to deliver optimum performance, durability, fuel economy and the lowest total cost of ownership for our customers,” says Landon Sproull, Paccar vice president.
Paccar increased the MX-13 engine’s output to 510 hp and 1,850 ft/lbs of torque and increased the MX-11 engine’s output to 430 hp and 1,650 ft/lbs of torque. The enhanced MX-11 engine also adds a new 335 hp and 1,150 ft/lbs torque rating in the lower end of the power range.
The MX engines deliver peak torque at 900 rpm for the majority of engine ratings, supporting increased performance and driving flexibility, he notes. The engines’ broad range of torque curves requires less shifting, and the quiet operation improves the driving experience.
B-10
Paccar designs MX engines to an industry-leading B10 life of one million miles, says Sproull. This means 90 percent of the MX-13 and MX-11 engines are expected to reach one million miles without the need for a major overhaul.
Each MX engine also comes standard with factory installed remote diagnostics to deliver proactive customer support. This translates into low cost of ownership and superior uptime for truck owners, he says.
Design features
The 2017 Paccar MX-13 and MX-11 engines include a new single cylinder air compressor, variable displacement oil pump and variable speed coolant pump. These features improve fuel economy over the previous engine design.
The latest MX-13 and MX-11 engines have extend oil and fuel filter change intervals – from 60,000 miles to 75,000 miles – for more uptime and lower maintenance costs over the life of the engine.
Furthermore, the new engines now utilize a single canister aftertreatment system that reduces weight by 100 lbs, improves serviceability and lengthens service intervals.
Axle
Sproull says the new proprietary Paccar tandem drive axle launched in North America – “the industry’s lightest and most efficient axle in its class – “complements the superior performance and fuel economy” of the Paccar MX Engines.
Rated at 40,000 pounds and supporting a gross combination weight of 80,000 lbs, the new axle is designed to improve the operating efficiency for linehaul, regional haul and pickup and delivery customers.
Kenworth and Peterbilt will begin offering the axle to customers in January 2017.
“Paccar’s axle reduces vehicle weight by up to 150 pounds, and provides improved fuel economy,” notes Sproull.
The axle features a unique pinion-through-shaft design that simplifies power flow in the axle for maximum efficiency. It also incorporates an innovative laser-welded carrier design that reduces weight and improves fuel economy.
The Paccar axle comes with an “industry-leading” warranty of five years or 750,000 miles.
The axle is available in ratios from 2.47 to 3.70 and can be used with straight torque engines up to 1,650 ft/lbs and multi-torque engines up to 1,750 ft/lbs.
