Peterbilt Motors Co. has introduced an aerodynamic package for its on-highway Models 386 and 384 designed to improve fuel economy up to an estimated 12 percent. The company also introduced a new proprietary fuel efficiency package designed to provide fuel savings gains of up to 12 percent for its traditionally styled Models 388 and 389. Peterbilt also introduced its new lineup of interior enhancements developed for on-highway and vocational trucks.
The aerodynamic package for Models 386 and 384 was designed through analysis and testing to reduce vehicle drag by up to 24 percent, resulting in an estimated $5,600 in savings annually (130,000 miles, $2.30/gal) versus a comparable Model 386 or 384 without the aerodynamic package. “Proper truck specification is critical in maximizing fuel efficiency, and Peterbilt’s new aerodynamic package provides the optimum set of components specially designed to increase fuel efficiency and add savings to our customers’ bottom line,” says Landon Sproull, chief engineer for Denton, Texas-based Peterbilt.
The proprietary package, according to the company, includes:
Roof fairing and trim tabs — Proprietary roof fairings with trim tabs to help push air up and over the cab and trailer to reduce drag and improve fuel economy;
New sleeper roof transition — Enhanced design provides a smooth transition between the cab and sleeper roof lines;
Enhanced chassis fairings — The new chassis fairings have been recontoured at the end to feature a “flair” design element that redirects airflow around the rear tires and wheels;
Aero battery box/toolbox — Optimized to provide better airflow under the cab for improved aerodynamics;
