Research Projects

Project at a Glance

Project Status: complete

Title: Quantification of evaporative running losses from light duty gasoline powered trucks

Principal Investigator / Author(s): McClement, Dennis

Contractor: Automotive Testing Laboratories, Inc.

Contract Number: A992-224

Research Program Area: Emissions Monitoring & Control

Topic Areas: Mobile Sources & Fuels


The purpose of this effort was to collect Running Loss Emission Data on a representative cross section of in-use, light-duty trucks to support the development of California specific emission factors. Eighteen randomly procured vehicles were tested. A total of 76 sequences were performed. Tests were performed using fuels at 9.0 psi RVP, ambient temperatures of 45, 95 and 105įF, and the LA-4 and NYCC driving sequences. Modified SHED sequences were performed on six vehicles. Results were consistent with previous studies.


For questions regarding this research project, including available data and progress status, contact: Heather Choi at (916) 322-3893

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