ASTM D7468-22

Standard Test Method for Cummins ISM Test

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STANDARD published on 1.7.2022

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The information about the standard:

Designation standards: ASTM D7468-22
Publication date standards: 1.7.2022
SKU: NS-1066792
The number of pages: 36
Approximate weight : 108 g (0.24 lbs)
Country: American technical standard
Category: Technical standards ASTM

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The category - similar standards:

Internal combustion engines Lubricants, industrial oils and related products

Annotation of standard text ASTM D7468-22 :

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 Number Code 27.020 (Internal combustion engines),75.100 (Lubricants, industrial oils and related products)

Additional information

Significance and Use

5.1?This test method was developed to assess the performance of an engine oil to control engine wear and deposits under heavy-duty operating conditions selected to accelerate soot generation, valve train wear, and deposit formation in a turbocharged, aftercooled four-stroke-cycle diesel engine equipped with exhaust gas recirculation hardware.

5.2?This test method can be used for engine oil specification acceptance when all details of this test method are in compliance. Applicable engine oil service categories are included in Specification D4485.

5.3?The design of the engine used in this test method is representative of many, but not all, modern diesel engines. This factor, along with the accelerated operating conditions needs to be considered when extrapolating test results.

1. 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?ExceptionThe 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. 1.4?Table of Contents:

?

Section

Scope

1

Referenced Documents

2

Terminology

3

Summary of Test Method

4

Significance and Use

5

Apparatus

6

Test Engine Configuration

6.1

Test Engine

6.1.1

Oil Heat Exchanger, Adapter Blocks, Block Off Plate

6.1.2

Oil Filter Head Modification

6.1.3

Oil Pan Modification

6.1.4

Engine Control Module (ECM)

6.1.5

Engine Position Sensor

6.1.6

Intake Manifold Temperature Sensor

6.1.7

Barometric Pressure Sensor

6.1.8

Turbocharger Controller

6.1.9

Power Supply Voltage

6.1.10

Air Compressor and Fuel Pump

6.1.11

Engine Block Preparation

6.1.12

Test Stand Configuration

6.2

Engine Mounting

6.2.1

Intake Air System

6.2.2

Aftercooler

6.2.3

Exhaust System

6.2.4

Exhaust Gas Recirculation System

6.2.5

Fuel System

6.2.6

Coolant System

6.2.7

Pressurized Oil Fill System

6.2.8

External Oil System

6.2.9

Crankcase Aspiration

6.2.10

Blowby Rate

6.2.11

System Time Responses

6.3

Oil Sample Containers

6.4

Mass Balance

6.5

Engine and Cleaning Fluids

7

Test Oil

7.1

Test Fuel

7.2

Engine Coolant

7.3

Pentane

7.4

Solvent

7.5

Preparation of Apparatus

8

Cleaning of Parts

8.1

General

8.1.1

Engine Block

8.1.2

Cylinder Head

8.1.3

Rocker Cover and Oil Pan

8.1.4

External Oil System

8.1.5

Crosshead Cleaning and Measurement

8.1.6

Rod Bearing Cleaning and Measurement

8.1.7

Ring Cleaning and Measurement

8.1.8

Injector Adjusting Screw Cleaning and Measurement

8.1.9

Engine Assembly

8.2

General

8.2.1

Parts Reuse and Replacement

8.2.2

Build-Up Oil

8.2.3

Coolant Thermostat

8.2.4

Oil Thermostat

8.2.5

Fuel Injectors

8.2.6

New Parts

8.2.7

Operational Measurements

8.3

Units and Formats

8.3.1

Instrumentation Calibration

8.3.2

Temperatures

8.3.3

Pressures

8.3.4

Flow Rates

8.3.5

Intake and Exhaust CO₂ Measurement

8.3.6

Engine/Stand Calibration and Non-Reference Oil Tests

9

General

9.1

New Test Stand

9.2

New Test Stand Calibration

9.2.1

Stand Calibration Period

9.3

Stand Modification and Calibration Status

9.4

Test Numbering System

9.5

General

9.5.1

Reference Oil Tests

9.5.2

Non-Reference Oil Tests

9.5.3

Reference Oil Test Acceptance

9.6

Reference Oil Accountability

9.7

Last Start Date

9.8

Donated Reference Oil Test Programs

9.9

Adjustments to Reference Oil Calibration Periods

9.10

Procedural Deviations

9.10.1

Parts and Fuel Shortages

9.10.2

Reference Oil Test Data Flow

9.10.3

Special Use of the Reference Oil Calibration System

9.10.4

Test Procedure

10

Engine Installation and Stand Connections

10.1

Coolant System Fill

10.2

Oil Fill for Break-in

10.3

Engine Build Committed

10.3.3

Fuel Samples

10.4

Engine Warm-up

10.5

Shutdown During Warm-up

10.5.1

Engine Break-in

10.6

Shutdown and Maintenance

10.7

Normal Shutdown

10.7.1

Emergency Shutdown

10.7.2

Maintenance

10.7.3

Downtime

10.7.4

200-h Test Procedure

10.8

Oil Fill for Test

10.8.2

Operating Conditions

10.8.4

Injection Timing Change

10.8.5

Mass % Soot Validity

10.8.6

Test Timer

10.8.7

Operational Data Acquisition

10.8.8

Oil Sampling

10.8.9

Oil Addition

10.8.10

End of Test (EOT)

10.9

Engine Disassembly

10.9.3

Calculations, Ratings and Test Validity

11

Crosshead Mass Loss

11.1

Crosshead Mass Loss Correction Factor

11.1.7.1

Injector Adjusting Screw Mass Loss

11.2

Injector Adjusting Screw Correction Factor

11.2.5

Ring Mass Loss

11.3

Sludge Ratings

11.4

Oil Filter Plugging

11.5

Oil Analyses

11.6

Oil Consumption

11.7

Fuel Analyses

11.8

Additional Analysis

11.8.1

Assessment of Operational Validity

11.9

Assessment of Test Interpretability

11.10

Test Report

12

Report Forms

12.1

Reference Oil Test

12.2

Electronic transmission of Test Results

12.2.1

Precision and Bias

13

Precision

13.1

Intermediate Precision Conditions

13.1.1

Reproducibility Conditions

13.1.2

Bias

13.2

Keywords

14

Annexes

?

Safety Precautions

Annex A1

Intake Air Aftercooler

Annex A2

Engine Build Parts Kit

Annex A3

Sensor Locations, Special Hardware, and Engine Block Modifications

Annex A4

External Oil System

Annex A5

Cummins Service Publications

Annex A6

Specified Units and Formats

Annex A7

Report Forms and Data Dictionary

Annex A8

Sludge Rating Worksheets

Annex A9

Oil Analyses

Annex A10

Determination of Operational Validity

Annex A11

Exhaust CO₂ Sampling Probe

Annex A12

ISM Merit Rating Calculation

Annex A13

Appendix

?

Typical System Configurations

Appendix X1

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.

2. Referenced Documents

D613-24	Standard Test Method for Cetane Number of Diesel Fuel Oil
D5453-19a	Standard Test Method for Determination of Total Sulfur in Light Hydrocarbons, Spark Ignition Engine Fuel, Diesel Engine Fuel, and Engine Oil by Ultraviolet Fluorescence (Includes all amendments and changes 8/13/2019).
D2622-21	Standard Test Method for Sulfur in Petroleum Products by Wavelength Dispersive X-ray Fluorescence Spectrometry
D2709-22	Standard Test Method for Water and Sediment in Middle Distillate Fuels by Centrifuge
D4175-23a	Standard Terminology Relating to Petroleum Products, Liquid Fuels, and Lubricants (Includes all amendments and changes 12/21/2023).
D4052-22	Standard Test Method for Density, Relative Density, and API Gravity of Liquids by Digital Density Meter
D5967-21	Standard Test Method for Evaluation of Diesel Engine Oils in T-8 Diesel Engine
ASTM Deposit Rating Manual 20
D86-23ae1	Standard Test Method for Distillation of Petroleum Products and Liquid Fuels at Atmospheric Pressure (Includes all amendments and changes 2/9/2024).
D93-20	Standard Test Methods for Flash Point by Pensky-Martens Closed Cup Tester
D97-17b(2022)	Standard Test Method for Pour Point of Petroleum Products (Includes all amendments and changes 11/29/2022).
D130-19	Standard Test Method for Corrosiveness to Copper from Petroleum Products by Copper Strip Test
D235-22	Standard Specification for Mineral Spirits (Petroleum Spirits) (Hydrocarbon Dry Cleaning Solvent)
D287-22	Standard Test Method for API Gravity of Crude Petroleum and Petroleum Products (Hydrometer/Method)
D445-23	Standard Test Method for Kinematic Viscosity of Transparent and Opaque Liquids (and Calculation of Dynamic Viscosity)
D482-19	Standard Test Method for Ash from Petroleum Products
D524-15(2019)	Standard Test Method for Ramsbottom Carbon Residue of Petroleum Products
D664-18e2	Standard Test Method for Acid Number of Petroleum Products by Potentiometric Titration (Includes all amendments and changes 1/4/2019).
D5185-18	Standard Test Method for Multielement Determination of Used and Unused Lubricating Oils and Base Oils by Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES)
D4739-23	Standard Test Method for Base Number Determination by Potentiometric Hydrochloric Acid Titration
D4737-21	Standard Test Method for Calculated Cetane Index by Four Variable Equation
D4485-22e1	Standard Specification for Performance of Active API Service Category Engine Oils (Includes all amendments and changes 12/8/2022).
D4294-21	Standard Test Method for Sulfur in Petroleum and Petroleum Products by Energy Dispersive X-ray Fluorescence Spectrometry
E178-21	Standard Practice for Dealing With Outlying Observations
E29-22	Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
Code of Federal Regulations
D2500-23	Standard Test Method for Cloud Point of Petroleum Products and Liquid Fuels
D2274-14(2019)	Standard Test Method for Oxidation Stability of Distillate Fuel Oil (Accelerated Method)
D1319-20a	Standard Test Method for Hydrocarbon Types in Liquid Petroleum Products by Fluorescent Indicator Adsorption (Includes all amendments and changes 9/14/2020).
D976-21e1	Standard Test Method for Calculated Cetane Index of Distillate Fuels (Includes all amendments and changes 2/23/2023).

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