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Walmart Futuristic Delivery Truck

Walmart and Peterbilt have collaborated on aerodynamic, hybrid, electrification and alternative fuel projects in the past, each with incremental gains in fuel efficiency and emission reductions. The Walmart Advanced Vehicle Experience tractor combines many of these projects in a single vehicle. “Peterbilt’s goals of producing the most fuel-efficient, aerodynamic, and lightweight trucks in the industry mirror those of Walmart,” said Landon Sproull, chief engineer at Peterbilt. “Our combined efforts help build a business case for these technologies in the future, as well as support one of our best customers.”

Designers used extensive computational fluid dynamics analysis to optimize the truck’s styling. The truck’s shape represents a 20 percent reduction in aerodynamic drag over Walmart’s current Peterbilt Model 386. By placing the cab over the engine, the truck’s wheelbase is greatly shortened, resulting in reduced weight and better maneuverability. Walmart relied on product development supplier to carry out the vehicle’s construction with these detailed design specifications.

 

The truck features a micro turbine Range Extender generator developed by Capstone Turbine Corporation. The company also engineered the truck’s integrated hybrid drivetrain solution. The use of a hybrid powertrain allows the turbine to remain at optimum operating revolutions per minute (RPM), while the electric motor/energy storage handles acceleration and deceleration. A longer-range version of this powertrain would feature a larger turbine and smaller energy storage system.

 

When keyed on, the truck automatically detects the state of charge of the batteries and starts charging them, if needed, using the turbine engine. Charge mode can be manually selected if an operator wishes to “top off” the batteries prior to shutting down. For use in urban areas, the truck will run on electric power alone until the battery state of charge hits 50 percent. At that time the turbine will automatically start and begin charging the batteries.

Innovation is key to improvement, and the project aims to demonstrate a wide range of cutting edge technologies and designs Walmart is considering in an effort to improve the overall fuel efficiency of its fleet and lower the company’s carbon footprint. Although the prototype currently runs on diesel, its turbine is fuel neutral and can run on compressed or liquid natural gas, biofuels or other fuels. The prototype is the result of collaboration between Walmart and many vendors, including Peterbilt, Roush Engineering, Great Dane Trailers and Capstone Turbine. Almost every component on this vehicle is cutting edge and showcases innovations of the future that will drive increased efficiency.

 

 

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