UNITED STATES ENVIRONMENTAL PROTECTION AGENCY

NATIONAL VEHICLE AND FUEL EMISSIONS LABORATORY

2565 PLYMOUTH ROAD

ANN ARBOR, MICHIGAN 48105-2498

 

MEMORANDUM

SUBJECT: Heavy-Duty Hybrid Onboard Diagnostics

FROM: Amy Kopin

TO: The Docket

DATE: July 21, 2011

On April 12th, 2011 from 2-3pm EST, we met with the Engine Manufacturers Association 

(EMA) to discuss concerns raised by EMA regarding heavy-duty onboard diagnostic (OBD) 

requirements and timing. EMA 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. 1,2

 Attendees from the EPA and EMA are presented in the tables below, the agenda 

is also attached at the end of this memo.

EPA Attendees:

Attendee Affiliation

Cleophas Jackson EPA – Compliance and Innovative 

Strategies Division

Anthony Neam EPA – Assessment and Standards 

Division

Amy Kopin EPA – Assessment and Standards 

Division

 

1 U.S. EPA, NHTSA, and DOT, “Greenhouse Gas Emission Standards and Fuel Efficiency Standards for Mediumand 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

2 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-74-fr-8310.pdf

OFFICE OF

AIR AND RADIATION
EMA: Attendees: 

Attendee Affiliation

Bill Ellison Cummins Inc.

Dan Kieffer PACCAR Inc.

Dave Ferris General Motors Company

Dave Kayes Daimler Trucks North America LLC

Dave Smith Volvo Powertrain Corporation

Don Keski-Hynnila Daimler Trucks North America LLC

Frank Krich Chysler Group LLC

George Lin Caterpillar Inc.

Greg Pataky Cummins Inc.

Hwei Jen Kachler Cummins Inc.

Jackie Yeager Cummins Inc.

John Trajnowski Ford Motor Company

Karl Tasik Volvo Powertrain Corporation

Lennart Lindholm Volvo Powertrain Corporation

Lisa Stegink EMA

Mark Siddall Daimler Trucks North America LLC

Mark Stepper Cummins Inc.

Matt Duffy Caterpillar Inc.

Matt Smith Navistar, Inc.

Michiel J. Van Nieuwstadt Ford Motor Company

Rebecca Shelby Ford Motor Company

Scott Crafard Isuzu

Susumu Ariga Hino

Tom Sloane PACCAR Inc.
333 West Wacker Drive, Suite 810 | Chicago, Illinois 60606

Telephone: (312) 929-1970 | Facsimile: (312) 929-1975

Joint EMA-EPA Call on Hybrids for OBD

April 12, 2011

Agenda

1. Introduction 

2. Overview

3. Current technology

a. What capability do the production systems have today? 

4. Industry’s interim plan for now to 2019/2020

a. Specific monitor and/or other difficulties they anticipate having

b. Need to understand exactly what OBD delay means in terms of vehicle 

certification and powerpack certification, e.g., what monitors will be functional 

and which will not be functional 

c. How to ensure no tampering and system is functioning properly?

d. Review OBD requirements for alternative fuels

5. Standardization and communication

a. What are specific concerns with J1939?

6. Access to information

a. HMRC states that HD hybrid system manufacturers do not “have access to OBD 

system [engine] data,” is this issue being actively resolved?

b. Engine manufacturers assert a lack of access to hybrid system control systems -

what specific information is needed? 

7. Liability and warranty issues

a. Are liability and warranty concerns different from other emission control 

technology purchased from suppliers today? Why?

8. Next steps