The Kenworth T680 is now available with the Bendix eTrac air-bag transfer system for 6×2 axle configurations.
A 6×2 axle configuration offers reduced weight and enhanced fuel economy over the traditional 6×4 axle configuration. It saves several hundred pounds by using one ‘live’ rear drive axle instead of two and eliminating the inter-axle driveline and rear differential. The need for internal gearing in the non-drive axle is also eliminated, resulting in fewer parasitic losses. The combination of a 6×2 tandem axle configuration and wide-base tires may provide a significant fuel economy improvement, Kenworth explains, depending on use, road conditions, and other factors.
The Bendix eTrac system links into Bendix ABS with automatic traction control (ATC) and electronic stability programming. This system automatically engages and disengages – without driver input – the vehicle’s air-bag pressure transfer system, transferring pressure from the non-drive to the drive axle when it recognizes wheel slip. This provides improved fuel efficiency in a lighter package combined with on-demand traction, according to Bendix.
The Bendix eTrac system protects the drivetrain by automatically disengaging after a low-traction event or when the vehicle’s resumed speed exceeds 25 mph. The system also allows for manual activation at speeds below 10 mph, or when a vehicle’s ATC mud/snow switch is enabled.
The 6×2 axle configurations are available with the proprietary Kenworth AG380 and AG400L lightweight air-ride suspensions.
The AG380, rated at 38,000 lb, is for on-highway fleets and truck operators who require less weight and a lower chassis height in applications such as tankers, flatbeds, reefers, vans, and car carriers. The disc-brake-compatible AG400L is a 40,000-lb highway, four-bag system.