UNITED STATES ENVIRONMENTAL PROTECTION AGENCY

NATIONAL VEHICLE AND FUEL EMISSIONS LABORATORY

2000 TRAVERWOOD DRIVE

ANN ARBOR, MI  48105-2498

									     OFFICE OF

									AIR AND RADIATION

3/10/16

MEMORANDUM

SUBJECT: Test Procedure Review with Cummins, Volvo, Navistar, Paccar,
Daimler Eaton and Allison

FROM: James Sanchez

TO:  Greenhouse Gas Emissions Standards and Fuel Efficiency Standards
for Medium- and

Heavy-Duty Engines and Vehicles - Phase 2 - Docket EPA-HQ-OAR-2014-0827

This memo documents communication on March 10, 2016 between
representatives of Cummins, Volvo, Navistar, Paccar, Eaton, Allison,
Daimler, Caterpillar, Hino, EMA and EPA to discuss heavy-duty test
procedures proposed in the Phase 2 greenhouse gas and fuel efficiency
standards for heavy-duty vehicles notice of proposed rulemaking.

Participants: 

Allison – 

Caterpillar – 

Cummins – Jackie Yeager, Jon Dickson

Daimler – Gerald Freitag, David Kayes, Inderpal Singh

Eaton – 

EMA – 

EPA – Houshun Zhang

Hino – Mark Siddall

Navistar – Dave Gardner, Cortney Guzlas, Matt Hunkler

PACCAR – Mark Malowicki, Dan Kieffer, Erin Luke

Volvo – Marc Miller, Tim Connors, Chuck Kaslavage

Discussion and follow-up items (with owner's name in bold): 

Road grade evaluation 

EPA investigating two possible changes:

Relax overshoot constraint by changing GEM driver model PI controller. 
Considering allowing between 3-5 mph overshoot going downhill.

Chop road grade on each hill so peaks will be reduced.

EPA analyzing these changes and requested companies to do the same.

Matt H. and Gerald presented Navistar and DTNA analyses of Profile D
compared to their vehicle data – similar conclusions. 

Some companies looking at longer cycles.  Discussed whether it is
critical to maintain same cycle length and how much increase might be
acceptable – hard to answer right now. 

GEM update  

Executable corresponding to NODA version should be available week of
March 14. 

Company request for GEM to accept input of user cycles.

Topics for future calls: 

(TBD) SwRI results (N13 365, gasoline engine) – Houshun

(3/24) Road grade evaluation (analysis of GEM changes)  – EPA 

(3/24) Road grade evaluation – Industry TBD

