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Exa's simulation technology helps SuperTruck achieve efficiency

Exa Corp. (NASDAQ: EXA) said that Cummins Inc. and Peterbilt Motors Company have credited Exa´s technology and engineering expertise as instrumental in the success of their recently announced vehicle.

Exa worked with engineers from both Cummins and Peterbilt to perform aerodynamic and thermal simulations to achieve significant efficiency improvements throughout the tractor, trailer and engine. These simulations, done long before a physical prototype was ever created, helped this SuperTruck exceed the required 50 percent efficiency improvement, and deliver a 75 percent more efficient truck ahead of schedule.

The project started with Cummins´ engineers digitally packaging their new, energy efficient engine, designed with a waste heat recovery system, into the Peterbilt tractor CAD geometry. They then added heat exchangers, and simulated the thermal performance of the complete system.

At the same time, Landon Sproull, Peterbilt chief engineer, and Rick Mihelic, Peterbilt manager of vehicle performance and engineering analysis, were evaluating their tractor and trailer combinations for aerodynamic/thermal performance.

Mihelic said, “We designed a complete new SuperTruck aerodynamic package which included visible devices such as trailer skirts and wheel well covers as well as unseen, but critical, underbody shields that optimize airflow and thermal efficiency.”

Exa develops, sells and supports simulation software and services to enhance product performance, reduce product development costs and improve the efficiency of design and engineering processes. Founded in 1991, the company is headquartered in Burlington, MA. Its website is at;


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