UNITED STATES ENVIRONMENTAL PROTECTION AGENCY

NATIONAL VEHICLE AND FUEL EMISSIONS LABORATORY

2000 TRAVERWOOD DRIVE

ANN ARBOR, MI  48105-2498

									     OFFICE OF

									AIR AND RADIATION

7/23/15

MEMORANDUM

SUBJECT: Test Procedure Review with Cummins, Volvo, Navistar, Paccar,
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 July 23rd, 2015 between
representatives of Cummins, Navistar, Paccar, Eaton, Allison, 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: 

Cummins – Jackie Yeager, Anand Puranik

Eaton – Erik Dykes

EPA – Houshun Zhang, James Sanchez

Navistar – David Gardner, Cortney Guzlas

PACCAR – Erin Luke, Dan Kieffer, Tom Sloane

Allison – Mike Howenstein, Jeff Shultz, Jed

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

Summary of completed and planned testing

Houshun and James provided an overview of testing at SwRI, ORNL, and EPA
labs (see slides from Houhsun) 

Future testing includes additional engines and child ratings;
alternative maps, steady state maps, powertrain maps; investigation of
“hybrid” (mixed mode) mapping

Generating engine cycles from GEM

Another version of GEM source code will be posted soon with engine
cycles as an output 

“Hybrid” concept of alt map + ss map 

Ran out of time to discuss so will keep on agenda for next call 

Consider “hybrid” concept of using alternative mapping for ARB
transient cycle and smaller steady state map on 55, 65 mph cruise cycles
as way of reducing test time, for discussion on next call – All

Other

Consider if companies should submit written comments on alternative
mapping and powertrain test procedures as a group – All  

