From:	Jeff Clark
Sent:	Thursday, May 29, 2003 12:01 PM
To:	Andrew Ritchie (E-mail); Bill Larch (E-mail); Bob Campbell (E-mail); Charlie Passut (E-mail) (E-mail); Dan Pridemore (E-mail); Floyd Albert (E-mail); Greg Shank (E-mail); Jeff Clark; Jim Gutzwiller (E-mail); Jim Matasic (E-mail); Jim Moritz (E-mail); Jim Rutherford (E-mail); Joe Franklin (E-mail); John Haegelin (E-mail); John Knight (E-mail); Ken Goshorn (E-mail); Mark Cooper (E-mail); Mark Rees (E-mail); Michael Minotti (E-mail); Ms. Gita Krishnaswamy (E-mail); Pat Fetterman (E-mail); Riccardo Conti (E-mail); Ron Buck (E-mail); Scott Richards (E-mail); Stacy Bond (E-mail); Steve Gearhart (E-mail); Steve Kennedy (E-mail); Tom Franklin (E-mail); Wim Van Dam (E-mail)
Subject:	T-11 Task Force Minutes of May 27, 2003 Teleconference
Here are the unapproved minutes of the Mack T-11 Task Force Teleconference of May 27, 2003.

Participants:
Jeff Clark, Jim Matasic, Jim Moritz, Bill Larch, Tom Franklin, Joe Franklin, Scott Richards, Jim Rutherford, Wim van Dam, Bob Campbell, Dan Pridemore, Riccardo Conti, Ron Buck, Pat Fetterman, Greg Shank, Ken Goshorn, Steve Kennedy

Summary of Action Items:
1. Labs to report rotational viscosity data (including r-squared) for every 12-hour period. Jeff Clark will update the report packet to accomodate the new data.
2. Labs are to report rotational viscosity rheometer geometry.
3. TMC to coordinate rotational viscosity round robin.

Review of Tests and Data:
ExxonMobil is running the fourth candidate on their first stand and is in the process of shaking down their second stand. Southwest Research has two new stands that just recently finished their first reference; another stand is running the second reference on a build; a third stand is running its third reference on a new build. The engine had to be rebuilt due to a stuck second ring. Lubrizol is running the third candidate on their first stand; their second stand should be ready for its first reference next week. Ethyl is running its fourth candidate, and the next test will be the stand's second reference on this build.

Some general discussion followed regarding the need to switch out the cylinder heads that are possibly out of spec on swirl. Mack gave the guidance that it is generally preferrable to get follow-up reference data on an engine build as opposed to switching the heads. The ultimate decision rests with the labs. Mack will work with the labs to determine the best course of action.

T-11 TGA Soot Measurement Workshop:
Joe Franklin updated the group on the workshop. Several action items arose from the workshop and a follow-up conference call has been scheduled. The minutes of the workshop are attached.

Rotational Viscosity Conference Call:
The group the met via teleconference forwarded four recommendations to the T-11 task force.

1.  Labs are to report outstanding rotational viscosity as soon as possible.
2. The data analysis done by Jim Rutherford should include Rotational Viscosity Increasing, Relative Rotational Viscosity Increasing, and Rotational Viscosity Rate Index Increasing.
3. Labs are to report rotational viscosity values and r-squared values for all 12 hour periods. Rheometer geometry information needs to be reported as well.
4. TMC is to coordinate Rotational Viscosity round-robins with new and sooted samples.

All four recommendations were accepted. The report packet will need to be modified to accommodate the additional data. The minutes of the teleconference are attached.

Data Review:
At the time of the conference call, Jim Rutherford had not yet received all rotational viscosity data so any discussion of the analysis would have been premature. Jim did distribute some plots, and they are attached.

Pass/Fail Parameters and Limits:
Greg Shank indicated that Mack hopes to identify p/f parameters by early June and p/f limits by late June. Rotational viscosity, rate index, and kinematic viscosity are all being considered.

Other Business:
Riccardo Conti asked if anyone had seen emissions difference from engine to engine (current and new cylinder heads). Riccardo provided some data:

Engine         Cylinder Head                      Timing   CO (ppm)   NO x (ppm)   Visible Smoke (%)   Notes
Current T-11 L13K & L10K Pyramid Sign   11.40      160           310                 5                         Suspected low swirl level
New T-11     KO7\ & KO7\ Diamond Sign   11.40      740           280                17

Meetings:

Conference Call
June 4, 2003
2 pm Eastern

Meeting
Jun 16, 2003
ASTM Norfolk

Please contact me with any corrections.

Regards,

Jeff Clark
Staff Engineer
ASTM Test Monitoring Center
6555 Penn Ave.
Pittsburgh, PA 15206
Ph: 412-365-1032
Fx: 412-365-1047
Email: jac@astmtmc.cmu.edu
or       jaclark@andrew.cmu.edu