Science Inventory

Cold Temperature Effects on Speciated VOC Emissions from Modern GDI Light-Duty Vehicles 1

Citation:

George, I., M. Hays, R. Snow, J. Faircloth, T. Long, AND R. Baldauf. Cold Temperature Effects on Speciated VOC Emissions from Modern GDI Light-Duty Vehicles 1. Emissions Inventory Conference, Baltimore, MD, August 15 - 18, 2017.

Impact/Purpose:

This abstract summarizes results from a recent AEMD dynamometer research study that investigated the speciated emissions from modern light-duty vehicles with gasoline direct injection engines at two temperatures. This work will provide critical emissions data to improve emissions inventories and air quality models.

Description:

In this study, speciated VOC emissions were characterized from three modern GDI light-duty vehicles. The vehicles were tested on a chassis dynamometer housed in a climate-controlled chamber at two temperatures (20 and 72 °F) using the EPA Federal Test Procedure (FTP) and a portion of the Supplemental FTP (i.e. US06) that represents more aggressive driving conditions. The vehicles operated gasoline blended with 10% ethanol. VOC emissions from diluted vehicle exhaust were sampled with SUMMA canisters for EPA Method TO-15 analysis and with 2,4-Dinitrophenylhydrazine (DNPH) cartridges for carbonyl analysis by EPA Method TO-11A. This presentation will report the impact of ambient cold temperature, driving cycle, and GDI technology on speciated VOC emissions.

URLs/Downloads:

Cold Temp Effec Spec VOC Emiss   (PDF,NA pp, 229 KB,  about PDF)

Record Details:

Record Type: DOCUMENT (PRESENTATION/ABSTRACT)
Product Published Date: 08/15/2017
Record Last Revised: 09/29/2017
OMB Category: Other
Record ID: 337703

Organization:

U.S. ENVIRONMENTAL PROTECTION AGENCY

OFFICE OF RESEARCH AND DEVELOPMENT

NATIONAL RISK MANAGEMENT RESEARCH LABORATORY

AIR AND ENERGY MANAGEMENT DIVISION