ASTM-D7468 2021(Redline)

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D7468-21 Standard Test Method for Cummins ISM Test (Redline)

Published By	Publication Date	Number of Pages
ASTM	2021	49

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Description

ASTM D7468-21

Redline Standard: Standard Test Method for Cummins ISM Test

ASTM D7468

Scope

1.1 The test method covers a heavy-duty diesel engine test procedure conducted under high soot conditions to evaluate oil performance with regard to valve train wear, top ring wear, sludge deposits, and oil filter plugging in an EGR environment. This test method is commonly referred to as the Cummins ISM Test.2

1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.2.1 Exception—The only exception is where there is no direct SI equivalent such as screw threads, national pipe threads/diameters, tubing sizes, or where there is a sole source of supply equipment specification.

1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. See Annex A1 for general safety precautions.

1.4 Table of Contents:

1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

Keywords

crosshead wear; Cummins ISM; de-rate protocols; diesel engine oil; exhaust gas recirculation; lubricants; oil filter delta pressure; sludge; top ring mass loss; valve train;

ICS Code

ICS Number Code 27.020 (Internal combustion engines)

DOI: 10.1520/D7468-21

Additional information

Calculations, Ratings and Test Validity	11
Oil Filter Head Modification	6.1.3
Fuel System	6.2.6
Engine Coolant	7.3
Assessment of Operational Validity	11.9
Precision	13.1
Build-Up Oil	8.2.3
Test Report	12
Significance and Use	5
Sensor Locations, Special Hardware, and Engine Block Modifications	Annex A4
Test Stand Configuration	6.2
Solvent	7.5
Keywords	14
Parts Reuse and Replacement	8.2.2
Cleaning of Parts	8.1
Downtime	10.7.4
Oil Heat Exchanger, Adapter Blocks, Block Off Plate	6.1.2
New Test Stand	9.2
Engine Installation and Stand Connections	10.1
Blowby Rate	6.2.11
Typical System Configurations	Appendix X1
Reference Oil Test Data Flow	9.10.3
Apparatus	6
Oil Consumption	11.7
Ring Cleaning and Measurement	8.1.8
Normal Shutdown	10.7.1
Crosshead Mass Loss Correction Factor	11.1.7.1
Emergency Shutdown	10.7.2
Temperatures	8.3.3
Exhaust System	6.2.4
Assessment of Test Interpretability	11.10
Special Use of the Reference Oil Calibration System	9.10.4
Specified Units and Formats	Annex A7
Oil Thermostat	8.2.5
Shutdown During Warm-up	10.5.1
New Parts	8.2.7
Exhaust CO2 Sampling Probe	Annex A12
Oil Fill for Test	10.8.2
Test Numbering System	9.5
Intake and Exhaust CO2 Measurement	8.3.6
Operating Conditions	10.8.4
Scope	1
Rocker Cover and Oil Pan	8.1.4
Test Fuel	7.2
Oil Sampling	10.8.9
Operational Measurements	8.3
Last Start Date	9.8
Fuel Samples	10.4
Test Procedure	10
Engine Build Committed	10.3.3
Pressurized Oil Fill System	6.2.8
Reproducibility Conditions	13.1.2
Electronic transmission of Test Results	12.2.1
Injector Adjusting Screw Cleaning and Measurement	8.1.9
Pressures	8.3.4
External Oil System	8.1.5
Reference Oil Test	12.2
Power Supply Voltage	6.1.10
Shutdown and Maintenance	10.7
Engine Disassembly	10.9.3
Oil Pan Modification	6.1.4
Crosshead Mass Loss	11.1
Intermediate Precision Conditions	13.1.1
Ring Mass Loss	11.3
Test Engine Configuration	6.1
Oil Analyses	11.6
Donated Reference Oil Test Programs	9.9
Additional Analysis	11.8.1
Rod Bearing Cleaning and Measurement	8.1.7
Annexes
Test Engine	6.1.1
Coolant System Fill	10.2
Oil Filter Plugging	11.5
Engine Mounting	6.2.1
Fuel Analyses	11.8
Stand Calibration Period	9.3
Engine Build Parts Kit	Annex A3
Pentane	7.4
ISM Merit Rating Calculation	Annex A13
Referenced Documents	2
Stand Modification and Calibration Status	9.4
Sludge Ratings	11.4
Barometric Pressure Sensor	6.1.8
200-h Test Procedure	10.8
Appendix
Injector Adjusting Screw Correction Factor	11.2.5
Cummins Service Publications	Annex A6
Coolant Thermostat	8.2.4
Operational Data Acquisition	10.8.8
General	9.1
Intake Air Aftercooler	Annex A2
Reference Oil Test Acceptance	9.6
Safety Precautions	Annex A1
End of Test (EOT)	10.9
Cylinder Head	8.1.3
Test Timer	10.8.7
Flow Rates	8.3.5
Exhaust Gas Recirculation System	6.2.5
Engine Break-in	10.6
	Section
Reference Oil Accountability	9.7
Instrumentation Calibration	8.3.2
Summary of Test Method	4
Intake Air System	6.2.2
Bias	13.2
Report Forms and Data Dictionary	Annex A8
Oil Fill for Break-in	10.3
Procedural Deviations	9.10.1
Oil Addition	10.8.10
Engine Block Preparation	6.1.12
Sludge Rating Worksheets	Annex A9
Engine/Stand Calibration and Non-Reference Oil Tests	9
Adjustments to Reference Oil Calibration Periods	9.10
Test Oil	7.1
Engine Control Module (ECM)	6.1.5
Units and Formats	8.3.1
Aftercooler	6.2.3
Mass % Soot Validity	10.8.6
Air Compressor and Fuel Pump	6.1.11
System Time Responses	6.3
Turbocharger Controller	6.1.9
Engine Block	8.1.2
Parts and Fuel Shortages	9.10.2
Mass Balance	6.5
Crankcase Aspiration	6.2.10
Engine and Cleaning Fluids	7
Intake Manifold Temperature Sensor	6.1.7
Reference Oil Tests	9.5.2
Crosshead Cleaning and Measurement	8.1.6
Maintenance	10.7.3
Terminology	3
Non-Reference Oil Tests	9.5.3
Injector Adjusting Screw Mass Loss	11.2
New Test Stand Calibration	9.2.1
Injection Timing Change	10.8.5
Engine Warm-up	10.5
Engine Assembly	8.2
Fuel Injectors	8.2.6
Coolant System	6.2.7
Oil Sample Containers	6.4
Precision and Bias	13
Report Forms	12.1
Engine Position Sensor	6.1.6
Determination of Operational Validity	Annex A11
Preparation of Apparatus	8

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ASTM-D7468 2021(Redline)

ASTM D7468-21

Redline Standard: Standard Test Method for Cummins ISM Test

ASTM D7468

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