From:	Jeff Clark
Sent:	Thursday, June 16, 2005 12:21 PM
To:	Andrew Ritchie (E-mail); Andy Broff (E-mail); Bill Larch (E-mail); Bob Campbell (E-mail); Brad Carter (E-mail); Cathy Devlin (E-mail); Greg Shank (E-mail); Jeff Clark (E-mail); Jim Gutzwiller (E-mail); Jim Matasic (E-mail); Jim Moritz (E-mail); Jim Rutherford (E-mail); Jim Wells (E-mail); John Haegelin (E-mail); Jose Gutierrez (E-mail); Keith Selby (E-mail); Ken Goshorn (E-mail); Mark Cooper (E-mail); Michael Minotti (E-mail); Pat Fetterman (E-mail); Riccardo Conti (E-mail); Ron Buck (E-mail); Scott Richards (E-mail); Steve Kennedy (E-mail); Tom Franklin (E-mail); Wim Van Dam (E-mail)
Subject:	T-12 Operations Minutes
Attendance - Jeff Clark, Jim Matasic, Bob Campbell, Scott Richards, Jim Moritz, Andy Broff, Riccardo Conti, Greg Shank, Ken Goshorn

Background - This Operations teleconference was held in response to concerns regarding EGR/AFR control strategies. Several discussions via email have occurred in response to Afton's questions regarding engines possibly running differently.

Note: the secretary anticipates a great deal of discussion. The purpose of these minutes is to provide a brief summary only.

Bob Campbell saw that he could, in Phase II, keep the engine within CO2 limits but while changing to lower vgt and venturi. He did this after noticing that his IMP and exhaust temperature were different that what he was used to. Scott indicated that he felt that you couldn't change boost without changing CO2 levels since it is the IMP that drives the  egr system. At this point, a great deal of discussion took place. Greg asked if anyone else had seen this problem. Jim Matasic recalled something similar during shakedown, but since the widening of the CO2 windows it hasn't been an issue.  More discussion continued, with some emphasis on the compressor discharge pressure and fresh air flow into the manifold. The discussion sort of collapsed at this point.

Action Items: Mack will talk internally regarding the situation. Labs should discuss off line. Tentatively, we'll have a conference call on Thursday, June 23 at 11:00 am depending upon the availibility of Steve Trevitz of Mack.

Regards,

Jeff Clark
Staff Engineer
ASTM Test Monitoring Center
6555 Penn Avenue
Pittsburgh, PA 15206
412-365-1032
412-848-8843 (cell)
jac@astmtmc.cmu.edu