EPA Heavy-Duty In-Use Program Analysis 2007-2009
Explore the preliminary analysis of the EPA's Heavy-Duty In-Use Program data for model years 2007 to 2009, including pass ratios, NTE events, and compliance program overview. Gain insights into gaseous pollutants testing, vehicle results, and manufacturers' experiences with the program.
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Presentation Transcript
3-28-2012 Preliminary Analysis of Heavy-Duty In-Use Program Gaseous Data for MY 2007-2009 Larry Oeler, Justin Greuel, Phil Carlson Compliance Division U.S. EPA Office of Transportation & Air Quality
3-28-2012 Compliance Program Overview Gaseous Pollutants Pilot Program conducted in 2005/2006 Gave manufacturers/EPA experience with running the program Fully enforceable program started in 2007 EPA made selections in late 2007 Results due by end of 2009 PM Pilot 2007-2010 Enforceable starting in 2011
Number of Families Tested 2007 11 engine families 2008 12 engines families 7 manufacturers 2009 18 engine families 8 manufacturers
Preliminary Analysis of Pass Ratios - 2007 Vehicle Result Number of Vehicles Range in Pass Ratio by Pollutant HC NOx HC+NOx CO Pass 20 99 - 100% - 93- 100% - - 100% 35 90- 100% - 100% Fail 1 100% 7% 100% 2 - - 0- 87% 100%
Preliminary Analysis of Pass Ratios - 2008 Vehicle Result Number of Vehicles Range in Pass Ratio by Pollutant HC NOx HC+NOx CO 10 100% 96 100% - - 100% Pass 53 - 92 100% - 100% 1 85% - - Fail 5 - - Min 55% -
Preliminary Analysis of Pass Ratios - 2009 Vehicle Result Number of Vehicles Range in Pass Ratio by Pollutant HC NOx HC+NOx CO 24 100% 93 100% - - 100% Pass 41 - 93 100% - 100% 1 - 87% - Fail 6 - - 0- 82% -
Preliminary analysis of NTE Events - 2007 NTE Event Count 12 10 Number of Vehicles 8 6 4 2 0 0 1-10 11-20 21-30 31-40 41-50 >50 Number of Valid NTE Events
Preliminary analysis of NTE Events - 2008 Number of vehicles vs number of NTE events 2008 MY engine families in manuf In-use program 20 18 16 14 Number of vehicles 12 10 8 6 4 2 0 0 1-10 11-20 21-30 31-40 41-50 >50 Number of events
Preliminary analysis of NTE Events - 2009 Number of vehicles vs number of NTE events 2009 MY engine families in manuf In-use program 20 18 16 14 Number of vehicles 12 10 8 6 4 2 0 0 1-10 11-20 21-30 31-40 41-50 >50 Number of events
