Exa's Simulation Technology Helps Improve Fuel Economy for SuperTruck

Exa® Corporation, a global innovator of fluids simulation solutions for product engineering, stated that Cummins Inc. and Peterbilt Motors Company, the first companies to announce their SuperTruck for the Department of Energy (DOE) SuperTruck Program, 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% efficiency improvement, and deliver a 75% more efficient truck — ahead of schedule.

The new waste heat recovery condenser required a redesign of the vehicle heat exchanger system. Engineers used Exa's PowerFLOW(R), PowerCOOL(R) and PowerTHERM(R) to identify areas to improve thermal performance while maximizing aerodynamic efficiency.

The remarkable improvements were made possible through the collaboration of two world-class companies. They evaluated the entire truck from the underhood cooling requirements and engine housing, to every part of the tractor and trailer. "It was not one aerodynamic or thermal simulation that made the difference," stated David Koeberlein, Cummins' Program Lead for the SuperTruck program. "Using Exa's simulations, we were able to rapidly find and address areas of thermal and aerodynamic efficiency throughout the truck — it was a critical resource for our SuperTruck team."

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. "Exa's technology was able to quickly demonstrate, through simulation alone, optimal cooling package design," remarked Jon Dickson, Cummins Engineering Manager of Advanced Vehicle Integration. "To package the new waste heat recovery condenser, we had to redesign the vehicle heat exchanger system and use a non-traditional layout. We were able to use Exa's PowerCOOL® and PowerTHERM® to identify areas to improve thermal performance while maximizing aerodynamic efficiency — years before any vehicle was built."

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. "Over the course of three years, we ran hundreds of simulations to test and analyze every part of this truck using Exa PowerFLOW®," stated Mihelic. "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." Sproull added, "Using visualization of the simulation results, our team analyzed each area looking for opportunities for improvement. Our designers and engineers could easily review and discuss results and optimization options — something simply not possible in a wind tunnel. It was this comprehensive analysis that helped us to achieve our extreme efficiency savings that exceeded even the aggressive goals set by the DOE."

"Each day our customers seek efficiency improvements using our aerodynamic, thermal and acoustic solutions," remarked Stephen Remondi, Exa's President and CEO. "We have been working with Peterbilt for many years and were pleased to see them use Exa's solutions so effectively as part of this important initiative that will benefit us all in the end."

Source: http://www.exa.com/


  1. Globe Core Blending Globe Core Blending Ukraine says:

    All additives to petroleum are harmless to the car and serve as protection against the low-quality fuel which has got to a tank and will increase saving. They will secure and will burn any petroleum and if fuel is a standard, then because of the combustion completeness will increase a power, decrease gasoline consumption and harm of exhaust gases. Additives will increase service life of spark plugs, turbines, and the catalytic agent of exhaust gases, will prolong service life of elements of final system. The use of standard fuel in the normal car doesn’t lead to unwanted consequences, but with additives will lower vehicle owner expenses. Globecore Blending company is intended in production of fuel blending systems.

The opinions expressed here are the views of the writer and do not necessarily reflect the views and opinions of AZoM.com.

Tell Us What You Think

Do you have a review, update or anything you would like to add to this news story?

Leave your feedback
Your comment type