From: patrick.k.lai@esso.ca Sent: Tuesday, October 25, 2005 7:44 PM To: dbau@lubrizol.com; mesfin.belay@Detroitdiesel.com; dhbowden@ohtech.com; bob.campbell@AftonChemical.com; Jeff Clark; mawc@chevrontexaco.com; Pat.Fetterman@Infineum.com; eframe@swri.org; danny.e.larkin@exxonmobil.com; msarlo@swri.org; villahel@tacom.army.mil; Mahoney, Bill; Brad.carter@perkinelmer.com Cc: allen.s.comfort@us.army.mil; James.Gutzwiller@Infineum.com Subject: 2-Cycle Diesel Surveillance Panel Conference Call: Minutes Gents, The 2-Cycle Diesel Surveillance Panel conducted a teleconference call meeting on October 21, 2005. This is the minutes of the meeting. Attendees: Mesfin Belay - Detroit Diesel Corp. Jeff Clark - TMC Mark Cooper - Chevron-Texaco Oronite Jim Gutzwiller (for Pat Fetterman) - Infineum Patrick Lai - Imperial Oil Danny Larkin - ExxonMobil Mark Sarlo - SouthWest Research Institute The meeting was called to order at 10:10 a.m. The objective of the meeting was to discuss two proposals. Proposal # 1 - change the DD6V92TA test calibration requirements from 6 months or 10 non-reference tests to 12 months or 10 non-reference tests. Jeff Clark provided additional information on referencing frequencies of other multi-cylinder diesel engine tests. While some of the current tests have 12 months referencing intervals, Jeff expressed that given the low activity level of this test, a less frequent interval will slow down even more the gathering of reference data. That could impact the detection of any developing trends. The group shared Jeff's concerns. The proposal was withdrawn by consensus without a vote. Proposal # 2 - change the power-step controlled fuel flow rate from 90 kg/h +/- 1.8 kg/h to 89 kg/h +/- 1.8 kg/h; and the power-step reported power output from between 364 kW and 379 kW to between 366 kW and 380 kW. The possible reasons for the gradual changes of fuel flow rate and brake horsepower were discussed. Various means of resolutions were suggested. After extensive discussions, the proposal was approved unanimously with 6 votes for, 0 vote against and 1 waive. Effective date: September 1, 2005. One action item: further investigate any changes in the fuel analysis and test components characteristics that may have impacted the fuel flow rate and output power trends. Meeting adjourned at 11:00 a.m. Regards, Patrick Lai Chair, 2-Cycle Diesel Surveillance Panel P.O. Box 3022, 453 Christina Street S, Sarnia, Ontario. N7T 8C8 Tel: 519-339-5611 Fax: 519-339-5866 Cell: 519-383-9083 EMAIL: patrick.k.lai@esso.ca Web site: http://www.esso.ca/automotivetesting ----- Forwarded by Patrick K Lai/Canada/ExxonMobil on 10/25/05 04:18 PM ----- Patrick K Lai To: dbau@lubrizol.com, mesfin.belay@Detroitdiesel.com, 10/19/05 08:02 PM stacy.bond@perkinelmer.com, dhbowden@ohtech.com, bob_campbell@AftonChemical.com, jac@astmtmc.cmu.edu, mawc@chevrontexaco.com, Pat.Fetterman@Infineum.com, eframe@swri.org, Danny E Larkin/B/East-US/ExxonMobil, msarlo@swri.org, villahel@tacom.army.mil, "Mahoney, Bill" cc: Subject: 2-Cycle Diesel Surveillance Panel Conference Call:Technical Gents, Further to my e-mail note yesterday on the date and time of the conference call, this note provides the background of the 2 issues to be discussed and decided on. Issue # 1. For several years, all ASTM multi-cylinder diesel tests ( except for the DD6V92TA test) have moved the calibration intervals to 18 months and predetermined number of non-reference tests. At the June, 2005 ASTM meetings, concerns were expressed regarding the length of the interval. It was agreed to reduce the interval to 12 months until further studies. The DD6V92TA test has never made any changes on the calibration requirements, currently still at the original 6 months or 10 non-reference tests. In order to fall in-line with the rest of the multi-cylinder diesel tests, the proposal is to change the DD6V92TA test calibration requirements to 12 months or 10 non-reference tests. Issue # 2. The DD6V92TA test procedure specified at the power-step the controlled fuel flow rate to be 90 kg/h +/- 1.8 kg/h. The test procedure also specified at the power-step the reported power output to be from 364 kW to 379 kW. Over the last several years, there have been a gradual shift, either due to minor hardware or fuel changes, or both, that the engine power out put has to be increased to near the maximum range in order to meet the fuel flow specification. At times, even exceeding the power range may not meet the fuel flow specification. The attached spreadsheet showed all tests ran in the last 3 years, that the fuel flow versus power plots are all in the lower right quadrant. Both reference tests and non-reference tests were run with the same criteria and the parameters were very comparable. Given the status of this test, it is not practical to expense huge efforts to investigate the causes of this phenomenon. In order to reflect the actual operations of this test, the proposal is to change the power-step controlled fuel flow rate to 89 kg/h +/- 1.8 kg/h. and the power-step reported power output to between 366 kW and 380 kW. (See attached file: Power Step parameters comparison.xls) As a reminder, the conference call details are: Date: October 21, 2005 (Friday) Time: 10:00 a.m. (EDT) Conference call instruction: Number: 412-380-2000 Code: 3000504 Regards, Patrick Lai Chair, 2-Cycle Diesel Surveillance Panel P.O. Box 3022, 453 Christina Street S, Sarnia, Ontario. N7T 8C8 Tel: 519-339-5611 Fax: 519-339-5866 Cell: 519-383-9083 EMAIL: patrick.k.lai@esso.ca Web site: http://www.esso.ca/automotivetesting