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 June 21st, 2011 we held a conference call with Cummins to discuss
concerns raised by Cummins regarding heavy-duty onboard diagnostic (OBD)
requirements and timing.  Cummins 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, their comments include a request for a delay
of the application of HD OBD requirements for hybrid applications until
2020.  Attendees from this meeting are shown in the table below.

 Attendee 	Affiliation 

Cleophas Jackson 	EPA – Compliance and Innovative Strategies Division 

Anthony Neam 	EPA – Assessment and Standards Division 

Amy Kopin 	EPA – Assessment and Standards Division 

Mark Stepper	Cummins

Morgan Andreae	Cummins

Thomas A. Dollmeyer	Cummins

Benjamin J. Zwissler	Cummins

Bill Ellison	Cummins

Greg M. Pataky	Cummins

Hwei Jen Kachler	Cummins



 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

