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![Page 1: JACTest Monitoring Center Test Monitoring Center Report to the Mack Test Surveillance Panel June 17, 2002 Montreal.](https://reader036.fdocuments.net/reader036/viewer/2022081514/5697c0221a28abf838cd385a/html5/thumbnails/1.jpg)
JACTest Monitoring Center
Test Monitoring CenterReport to the
Mack Test Surveillance PanelJune 17, 2002
Montreal
![Page 2: JACTest Monitoring Center Test Monitoring Center Report to the Mack Test Surveillance Panel June 17, 2002 Montreal.](https://reader036.fdocuments.net/reader036/viewer/2022081514/5697c0221a28abf838cd385a/html5/thumbnails/2.jpg)
JACTest Monitoring Center
T-8/T-8E Reference Oil Testing Summary
• Test Activity– Moderately Low
• Currently Calibrated– 3 Labs– 7 Stands
• Current Alarms– None
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JACTest Monitoring Center
T-8/T-8E Reference Oil Testing Summary
• Severity Trends (through April 2002 period)– VI38: 0.41 cSt mild– RV48: 0.12 rv units mild– RV2: no severity trend
• Precision– All three parameters
• Within historical levels
• Improving compared to recent periods
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JACTest Monitoring Center
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JACTest Monitoring Center
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JACTest Monitoring Center
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JACTest Monitoring Center
T-9 Reference Oil Testing Summary
• Test Activity– Very Low
• Currently Calibrated– 1 Lab– 2 Stands
• Current Alarms– None
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JACTest Monitoring Center
T-9 Reference Oil Testing Summary
• Severity Trends (since January 1, 2000)– ALW: 2.1 microns mild– Delta PB: 5 ppm mild– TRWL: 14 mg severe
• Precision– No estimates or comparisons available due to low
activity
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JACTest Monitoring Center
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JACTest Monitoring Center
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JACTest Monitoring Center
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JACTest Monitoring Center
T-10 Reference Oil Testing Summary
• Test Activity– Moderately Low
• Currently Calibrated– 5 Labs– 12 Stands
• Current Alarms– CLW: Severity, Mild Direction– TRWL: Severity, Mild Direction
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JACTest Monitoring Center
T-10 Reference Oil Testing Summary
• Severity Trends (since March 2002)– CLW: 3.8 microns mild– TRWL: 28 mg mild
• Precision– PB, PB2, OC: show improvement– CLW, TRWL: show degradation
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JACTest Monitoring Center
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JACTest Monitoring Center
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JACTest Monitoring Center
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JACTest Monitoring Center
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JACTest Monitoring Center
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JACTest Monitoring Center
T-10A Reference Oil Testing Summary
• Alarms– none
• Severity Trends (since January 1, 2002)– MRV: 151 cP severe
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JACTest Monitoring Center
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JACTest Monitoring Center
T-10Liner Wear and Top Ring Weight Loss
• Severity Issues– Noted in May during review of reference data for
target update– Investigated by TMC, Mack, and TEI
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JACTest Monitoring Center
T-10Severity Investigation
• Issues Examined– Lab influences– Hardware batches– Reference oils– Liner measurements– Differences in operating parameters
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JACTest Monitoring Center
T-10Severity Investigation
• General Observations– Hardware batches
• Change in batch from D to F
• Possible change in liner supplier, Mack to confirm
• Difference in liner surface finish significant, but no impact found on results
• Batch F hardware has been run at Labs A and G only
• T-9 results on same hardware do not confirm T-10 results
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JACTest Monitoring Center
T-10Severity Investigation
• General Observations– Liner measurements
• Labs A and G switch from Talysurf to PDI
• Differences seen in results– Lab A: 32.3 Talysurf 29.6 PDI
– Lab G: 34.4 Talysurf 25.9 PDI
• Lab G switch coincides with batch F
• Round robin at same time shows good agreement in measurements throughout industry
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JACTest Monitoring Center
T-10Severity Investigation
• General Observations– Differences in operating parameters
• Blowby– Lab G extremely low compared to industry
– Unknown if difference is real or measurement problem
– Potential impacts??
• Humidity– Lab D extremely high compared to industry
– Unknown if difference is real or measurement problem
– Potential impacts??
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JACTest Monitoring Center
T-10Severity Investigation
• Cylinder Liner Wear– Lab Influence
• Lab G mild
– Hardware Batch• No effect found
– Reference Oil• No effect found
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JACTest Monitoring Center
T-10Severity Investigation
• Cylinder Liner Wear– Liner Measurements
• Effect not likely
• Next round robin to confirm
– Operating Differences• Effect unknown but not likely
– Differences existed prior to severity changes
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JACTest Monitoring Center
T-10Severity Investigation
• Cylinder Liner Wear– Conclusion
• Most likely cause of mild shift is Lab G
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JACTest Monitoring Center
T-10Severity Investigation
• Top Ring Weight Loss– Lab Influence
• Labs A and G mild
– Hardware Batch• Labs A and G: Batch F
• Labs B, D, and F: Batch D
• Batch F results are mild
– Reference Oil• No effect found
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JACTest Monitoring Center
T-10Severity Investigation
• Top Ring Weight Loss– Operating Differences
• Effect unknown but not likely– Differences existed prior to severity changes
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JACTest Monitoring Center
T-10Severity Investigation
• Top Ring Weight Loss– Conclusions
• Hardware batch may be driving mild shift
• Lab effects unknown
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JACTest Monitoring Center
T-10Severity Investigation
• Proposed Actions– Update Test Targets
• 12 or 13 tests?
• Use pooled standard deviation for CLW to account for lab differences
– Complications: Top Ring Weight Loss• Batch F run only at two labs
• Batch G to be introduced shortly
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JACTest Monitoring Center
T-10 Targets and Proposed Targets
CLW TRWL OC PB EOT PB 250-300
Current 32.5 / 3.4 134 / 26 49.6 / 10.9 3.1298 / 0.2847 8.2 / 5.2
820-2
13 tests
29.7 / 3.9 110 / 21 50.6 / 6.6 3.1529 / 0.2388 8.1 / 3.3
820-2
12 tests
30.4 / 3.4 111 / 21 50.6 / 6.9 3.1899 / 0.2067 8.2 / 3.3
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JACTest Monitoring Center
Items for Surveillance Panel Consideration
• Liner Wear Measurement Procedure– Currently maintained in T-9 standard– Options
• Keep in T-9. Update via Information Letter.
• Remove from T-9. Change to referenced document, maintained at TMC. Both T-9 and T-10 updated via Information Letter.
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JACTest Monitoring Center
Items for Surveillance Panel Consideration
• T-10 Ballot – Information Letter 02-1– Comment regarding Section 8.4.1 on servicing of
injectors• Currently: Servicing of injectors is recommended every
300 h. Resetting of injector opening pressure is recommended if pressure is outside the specification
• Suggested: Inspection of injectors, and cleaning if necessary, is required every 300 h. Resetting of injector opening pressure is required if pressure is outside the specification
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JACTest Monitoring Center
Items for Surveillance Panel Consideration
• T-10 Quality Index– Operational Plots / Capability Study– Review with lab engineers to establish thresholds– Proposal to be developed by TMC for panel
consideration