UNITED STATES ENVIRONMENTAL PROTECTION AGENCY

NATIONAL VEHICLE AND FUEL EMISSIONS LABORATORY

2565 PLYMOUTH ROAD

ANN ARBOR, MICHIGAN 48105-2498

OFFICE OF

AIR AND RADIATION

                                                                        
          	     

MEMORANDUM

SUBJECT:	Heavy-Duty Hybrid Onboard Diagnostics

FROM:		Amy Kopin

TO:		The Docket

DATE:		July 21, 2011

	On July 11th, and the 14th, 2011 we held conference calls with Lisa A.
Stegink of the Engine Manufacturers Association (EMA)to discuss concerns
and questions raised by members of EMA regarding heavy-duty onboard
diagnostic (OBD) requirements and timing.  EMA members raised concerns
during the comment period for the heavy-duty greenhouse gas notice of
proposed rulemaking that heavy-duty hybrid applications may not be able
to meet the 2013 heavy-duty OBD regulations that were published in the
2009 OBD Final Rulemaking. ,  Specifically, they have requested a delay
of the application of HD OBD requirements for hybrid applications until
2020.  Attendees from the EPA included Cleophas Jackson, Anthony Neam,
and Amy Kopin.

 U.S. EPA, NHTSA, and DOT, “Greenhouse Gas Emission Standards and Fuel
Efficiency Standards for Medium- and Heavy-Duty Engines and Vehicles,”
republished December 29, 2010.  Available here: 
http://origin.www.gpo.gov/fdsys/pkg/FR-2010-12-29/html/2010-32726.htm

 U.S. EPA, “Control of Air Pollution from New Motor Vehicles and New
Motor Vehicles Engines; Final Rule Regulations Requiring Onboard
Diagnostic Systems on 2010 and Later Heavy-Duty Engines Used in Highway
Applications Over 14,000 Pounds; Revisions to Onboard Diagnostic
Requirements for Diesel Highway Heavy-Duty Vehicles Under 14,000
Pounds,” published February 24, 2009.  Available here:
http://www.epa.gov/otaq/regs/im/obd/regtech/hd-obd-frm-02-24-09-notice-7
4-fr-8310.pdf

