LOUISVILLE, Ky. — Peterbilt officials Wednesday outlined enhancements to the Model 579 EPIQ package that they said deliver an 8 percent fuel economy improvement for the 2018 model year.
Peterbilt’s Model 579 EPIQ is available with the fuel-efficient Paccar MX-13 and MX-11 engines and is paired with the Fuller Advantage automated transmission to provide a wide range of horsepower and torque ratings, said Kyle Quinn, Peterbilt general manager and Paccar senior vice president. He noted that fuel economy improvement incorporated into the 2017 MX engines result in up to 4 percent improvement over the prior model year.
Additionally, both Paccar engines reduce weight by approximately 50 pounds and extend service intervals for more uptime and lower maintenance costs, estimated at $1,000 less per truck at 600,000 miles.
The 2017 release of Predictive Cruise Control on the MX engine provides additional fuel economy improvements of up to 3 percent, Quinn said.
“Predictive Cruise Control utilizes onboard maps and GPS information to maximize the truck’s own kinetic energy and determine the optimal vehicle speed as it approaches a hill,” he said. “As the truck crests the top of the hill, the system engages the engine brake as needed to curb the vehicle speed as it approaches the bottom of the hill.”
The recently introduced Paccar 40,000-pound tandem drive axle is also standard with the Model 579 for line-haul applications.
Its innovative design optimizes power distribution and has fewer parts for reduced maintenance, greater reliability and a 150-pound weight savings, Quinn said.
It features a unique through-shaft design that optimizes power flow in the forward rear axle for maximum efficiency and minimum oil churning losses, resulting in a one percent fuel economy improvement.
“Peterbilt trucks and Paccar MX engines are optimized to deliver unprecedented levels of value,” Quinn said. “The newest generation of Paccar MX engines and powertrain technologies once again raises the bar for fuel efficiency, performance and reliability, resulting in the lowest cost of ownership in the industry.”
Peterbilt has also introduced new interior color options, automatic interior temperature control for the Model 579 and several other features to improve driver comfort, the company said.
The Model 579 offers two new interior colors: sterling gray and saddle tan. Both are available in Prestige, Premier and Platinum interior levels. These new colors offer an enhanced appearance, commensurate with Peterbilt standards of styling and quality.
Enhanced comfort features of the Model 579 include updated Auto Start/Stop technology on the Peterbilt SmartAir No-Idle Sleeper Air Conditioning System on Model 579 tractors equipped with 72-inch or 80-inch sleepers. The system can provide increased engine idle charging with idle rates as high as 900 RPM for quick charging power.
Quinn said another comfort-focused design is the all-new larger sleeper window to improve comfort, increase ventilation and improve aerodynamics. The new 22-inch by 24-inch sleeper window provides a tilt style opening increasing air flow and natural light throughout the interior.
In another development, Peterbilt said the FlowBelow Tractor AeroKit rear fairing system for the Model 579 would be available the second quarter of this year.
FlowBelow Aero Inc. reports customers have achieved more than a two-percent increase in fuel savings through the use of the innovative system.
“The FlowBelow Tractor AeroKit rear fairing system gives our fuel-conscious customers another opportunity to optimize the aerodynamic benefits of the industry-leading Model 579,” said Scott Newhouse, Peterbilt chief engineer. “We will continue to partner with suppliers who offer our customers the resources they require to achieve maximum profitability.”
FlowBelow Aero Inc.’s fairing system includes center and rear fairings combined with patented wheel covers to optimize aerodynamic performance. The wheel cover works with the center and rear fairings to rectify drag intensive turbulence created by exposed rotating wheels. The quick-release design of the covers has a tool-free latch design and provides easy wheel maintenance access.