ARB Research Seminar

This page updated April 20, 2015

Technical Analysis of Vehicle Load-Reduction Potential for Advanced Clean Cars

Photo of Greg Pannone

Greg Pannone, President, CT-ENERGY, LLC

May 05, 2015
Cal EPA Headquarters, 1001 "I" Street, Sacramento, CA

Research Project


In addition to strict fuel and emission standards, reducing greenhouse gas emissions will require passenger cars and light-duty trucks to have improved aerodynamics, fuel-efficient tires, and reduced weight. In support of the California Air Resources Board's Advanced Clean Cars program, these technologies were assessed for their potential in reducing carbon dioxide (CO₂) emissions and increasing fuel economy in future passenger vehicles.

Model year 2014 vehicles were studied to determine the extent to which these load reducing technologies have already been applied. Using manufacturer-reported information, the aerodynamic drag and tire rolling resistance were estimated for each vehicle model. Vehicle curb weight was combined with other vehicle specifications to evaluate the weight of each vehicle. These analyses were then used to identify vehicles achieving best-in-class performance for each load-reducing technology.

The proposed best-in-class performance of each load attribute was applied to all vehicle models in the same class and projections of fuel consumption and tailpipe CO₂ emissions were generated to determine the potential benefit. Assuming that all current vehicles adopt similar load reducing technologies and strategies already available in today's better performing vehicles, it is estimated that tailpipe CO₂ emissions could be reduced in excess of 10% with a fuel economy improvement of approximately 9%.

Speaker Biography

Greg Pannone is President of the CT-ENERGY, LLC, a Michigan-based analytics and software company focusing on energy efficiency for the transportation sector. Previously, Pannone was Head of Fuel Economy, Performance, and Powertrain Synthesis at Chrysler Group, LLC. Included in his responsibilities were the strategic planning, fuel economy and performance simulation, sub-system specification, and development activities necessary to achieve the competitive and regulatory fuel economy and CO₂ requirements for Chrysler Group products. Prior to this, Pannone spent nearly 25 years in engine and powertrain systems development. At Chrysler, he led the powertrain systems development of many engines, including the HEMI V8. Before joining Chrysler, he was with General Motors Powertrain for 8 years at the Warren, MI Technical Center. Pannone holds a bachelor's degree and a master's degree in mechanical engineering from the Missouri University of Science & Technology and a master's of Applied Statistics from Oakland University. He has authored and co-authored technical papers on alternative fuels, engine technology and control, exhaust emission after-treatment, and fuel efficiency.

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