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  • ASTM
    D6984-17a Standard Test Method for Evaluation of Automotive Engine Oils in the Sequence IIIF, Spark-Ignition Engine
    Edition: 2017
    $160.99
    Unlimited Users per year

Description of ASTM-D6984 2017

ASTM D6984-17a

Historical Standard: Standard Test Method for Evaluation of Automotive Engine Oils in the Sequence IIIF, Spark-Ignition Engine




ASTM D6984

Scope

1.1 This test method covers an engine test procedure for evaluating automotive engine oils for certain high-temperature performance characteristics, including oil thickening, varnish deposition, oil consumption, as well as engine wear. Such oils include both single viscosity grade and multiviscosity grade oils that are used in both spark-ignition, gasoline-fueled engines, as well as in diesel engines.

Note 1: Companion test methods used to evaluate engine oil performance for specification requirements are discussed in SAE J304.

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 Exceptions—The values stated in inches for ring gap measurements are to be regarded as standard, and where there is no direct SI equivalent such as screw threads, National Pipe Threads/diameters, tubing size, or single source supply equipment specifications.

1.3 This test method is arranged as follows:

Subject

Section

Scope

1

Referenced Documents

2

Terminology

3

Summary of Test Method

4

Significance and Use

5

Apparatus

6

 Laboratory

6.1

 Drawings

6.2

 Specified Equipment

6.3

 Test Engine

6.4

  Engine Parts

6.4.1

 Engine Speed and Torque Control

6.5

 Sequence IIIF Fluid Conditioning Module

6.6

  Engine Cooling System

6.6.1

 Flushing Tank

6.7

 Coolant Mixing Tank

6.8

 Condenser Cooling Systems

6.9

 Engine Oil-Cooling System

6.10

 Fuel System

6.11

 Induction Air Supply Humidity, Temperature, and Pressure

6.12

 Temperature Measurement

6.13

  Thermocouple Location

6.13.1

 Air-to-Fuel Ratio Determination

6.14

  Injector Flow Testing

6.14.1

 Exhaust and Exhaust Back Pressure Systems

6.15

 Blowby Flow Rate Measurement

6.16

 Pressure Measurement and Pressure Sensor Location

6.17

Reagents and Materials

7

 Test Fuel

7.1

 Engine and Condenser Coolant

7.2

 Coolant Additive

7.3

 Coolant Preparation

7.4

 Pre-Test Cleaning Materials

7.5

 Sealing and Anti-seize Compounds

7.6

Test Oil Sample Requirements

8

Preparation of Apparatus

9

 Condenser Cleaning

9.1

 Intake Manifold Cleaning

9.3

 Cleaning of Engine Parts (other than the block and heads)

9.4

 Engine Block Cleaning

9.5

 Cylinder Head Cleaning

9.6

 Engine Build-up Procedure

9.7

  General Information

9.7.1

  Special Parts

9.7.2

  Hardware Information

9.7.3

  Fastener Torque Specifications and Torquing Procedures

9.7.4

 Parts Replacement

9.8

 Engine Block Preparation

9.9

 Piston Fitting and Numbering

9.10

  Piston Ring Fitting

9.10.1

 Pre-Test Camshaft and Lifter Measurements

9.11

 Camshaft Bearing Installation

9.12

 Camshaft Installation

9.13

 Main Bearings

9.14

  Crankshaft Installation

9.14.1

  Main Bearing Cap Installation

9.14.2

 Crankshaft Sprocket

9.15

 Camshaft Sprocket and Timing Chain

9.16

 Crankshaft End Play

9.17

 Piston Pin Installation

9.18

  Piston Installation

9.18.1

 Harmonic Balancer

9.19

 Connecting Rod Bearings

9.20

 Engine Front Cover

9.21

 Coolant Inlet Adapter

9.22

 Oil Dipstick Hole

9.23

 Oil Pan

9.24

 Cylinder Head Assembly

9.25

 Adjustment of Valve Spring Forces

9.26

 Cylinder Head Installation

9.27

 Hydraulic Valve Lifters

9.28

 Pushrods

9.29

 Valve Train Loading

9.30

 Intake Manifold

9.31

 Rocker Covers

9.32

 Water Inlet Adapter

9.33

 Condenser

9.34

 Coolant Outlet Adapter

9.35

 External Oil Cooling System

9.36

 Oil Sample Valve

9.37

 Ignition System

9.38

 Throttle Body

9.39

 Accessory Drive Units

9.40

 Exhaust Manifolds, Water-Cooled

9.41

 Engine Flywheel

9.42

 Pressure Checking of Engine Coolant System

9.43

 Lifting of Assembled Engines

9.44

 Mounting the Engine on the Test Stand

9.45

 External Cooling System Cleaning

9.46

 Engine Coolant Jacket Cleaning (Flushing)

9.47

 Coolant Charging

9.48

 Test Oil Charging

9.49

 Engine Oil Pump Priming

9.50

Calibration

10

 Laboratory and Engine Test Stand Calibration

10.1

 Testing of Reference Oils

10.2

 Reference Oil Test Frequency

10.3

 Evaluation of Reference Oil Test Results

10.4

 Status of Non-Reference Oil Tests Relative to Reference
  Oil Test

10.5

 Status of Test Stands Used for Non-Standard Tests

10.6

 Data Acquisition and Control

10.7

  Sample Rate

10.7.1

  Measurement Accuracy

10.7.2

  Temperature

10.7.3

  Pressure

10.7.4

  Flow

10.7.5

  Speed

10.7.6

  Mass

10.7.7

  Measurement Resolution

10.7.8

  System Time Response

10.7.9

  Quality Index

10.7.10

Engine Operating Procedure

11

 Dipstick and Hole Plug

11.1

 Dipstick Hole O-ring

11.2

 Engine Start-up and Shutdown Procedures

11.3

 Start-up

11.4

 Scheduled Shutdown

11.5

 Non-Scheduled Shutdowns

11.6

 Oil Sampling

11.7

 Oil Leveling

11.8

 Air-to-Fuel-Ratio Measurement and Control

11.9

 Air-to-Fuel Ratio Verification

11.10

 Blowby Flow Rate Measurement

11.11

 NOx Determinations

11.12

 Data Recording

11.13

 Initial Run (10 min)

11.14

 Engine Oil Quality Testing (80 h)

11.15

 Test Termination

11.16

Determination of Test Results

12

 Engine Disassembly

12.2

 Preparation of Parts for Rating of Sticking, Deposits,
  and Plugging

12.3

 Piston Deposit Ratings

12.4

 Post-Test Camshaft and Lifter Wear Measurements

12.5

 End-of Test Used Oil Sample Testing

12.6

 Viscosity Test

12.7

 Testing Oil Samples for Wear Metals

12.8

 Blowby Flow Rate Measurements

12.9

 Oil Consumption Computation

12.10

 Photographs of Test Parts

12.11

 Retention of Representative Test Parts

12.12

 Severity Adjustments

12.13

 Determination of Operational Validity

12.14

Report

13

 Report Forms

13.1

 Precision of Reported Units

13.4

 Deviations from Test Operational Limits

13.3

Precision and Bias

14

Keywords

15

Annexes

 

ASTM Test Monitoring Center – Organization

Annex A1

ASTM Test Monitoring Center – Calibration Procedures

Annex A2

ASTM Test Monitoring Center – Maintenance Activities

Annex A3

ASTM Test Monitoring Center – Related Information

Annex A4

Sequence IIIF Test Parts Replacement Guidelines

Annex A5

Sequence IIIF Determination Volume of Engine Oil in Pan

Annex A6

Sequence IIIF Test Fuel Analysis

Annex A7

Sequence IIIF Test Report Forms and Data Dictionary

Annex A8

Sequence IIIF Test Air-to-Fuel Ratio Control Flow Chart

Annex A9

Sequence IIIF Test Set Points and Control States

Annex A10

Sequence IIIF Quality Index Upper and Lower Values

Annex A11

Sequence IIIF Engine Oil Level Worksheet

Annex A12

Engine Build Worksheets

Annex A13

Blowby Flow Rate Determination

Annex A14

Safety Precautions

Annex A15

Sequence IIIF Blueprint Listing

Annex A16

Fluid Conditioning Module Components

Annex A17

Engine Oil Cooling System Configuration

Annex A18

Guidelines For Hardware Subject To First-In/First-Out Criteria

Annex A19

Appendixes

 

Sequence IIIFHD Test Procedure

Appendix X1

Sequence IIIFVIS Test Procedure

Appendix X2

1.4 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.

1.5 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

cam and lifter wear; deposits; engine oil; engine wear; high-temperature performance; oil consumption; oil thickening; oil viscosity; oxidation resistance; Sequence IIIF test; spark-ignition automotive engine; varnish; varnish deposition;


ICS Code

ICS Number Code 75.100 (Lubricants, industrial oils and related products)


DOI: 10.1520/D6984-17A

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