Potential Changes to ARB’s Truck Inspection Programs
Public Workshop S acramento, CA S eptember 9, 2016
California Environmental Protection Agency
Potential Changes to ARBs Truck Inspection Programs Public Workshop - - PowerPoint PPT Presentation
Potential Changes to ARBs Truck Inspection Programs Public Workshop S acramento, CA S eptember 9, 2016 California Environmental Protection Agency Air Resources Board 2 Webcast During t he workshop, please submit any quest ions and
Public Workshop S acramento, CA S eptember 9, 2016
California Environmental Protection Agency
comment s t o t he following email address:
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ARB roadside testing data: 2011-2014
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S
AE J1667 opacity tests were compared to engine dynamometer FTP cycles
DPF was progressively damaged by
drilling out holes in the cap to simulate broken DPFs from minor leaks to gross failures
Properly functioning DPFs emit
negligible PM emissions and no
Data suggests vehicles measuring
at or above 5%
emitting excess emissions beyond that of a properly functioning vehicle
16 Research conduct ed at Nat ional Renewable Energy Laborat ory (NREL)
ARB Research Contract 11-600
Three S
AE J1667 certified smoke meters tested for comparison
More than 10 S
nap Acceleration tests performed per instrument at each level
S
moke meters compare favorably with each other at low opacity
levels (≈±1%
)
Data supports that current smoke
meters are adequate to measure
range
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Research conducted at National Renewable Energy Laboratory (NREL)
ARB Research Contract 11-600
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ummer 2016
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http:/ / www.arb.ca.gov/ msprog/ hdim/ hdim.htm
http:/ / www.arb.ca.gov/ listserv/ listserv.php (Choose mobile source related, Heavy-Duty Vehicle Inspection and Maintenance)
sierrarm@ calepa.ca.gov
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