ASTM D6618 - 14

    Standard Test Method for Evaluation of Engine Oils in Diesel Four-Stroke Cycle Supercharged 1M-PC Single Cylinder Oil Test Engine

    Active Standard ASTM D6618 | Developed by Subcommittee: D02.B0.02

    Book of Standards Volume: 05.03


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    Significance and Use

    5.1 The test method is designed to relate to high-speed, supercharged diesel engine operation and, in particular, to the deposit control characteristics and antiwear properties of diesel crankcase lubricating oils.

    5.2 The test method is useful for the evaluation of diesel engine oil quality and crankcase oil specification acceptance. This test method, along with others, defines the minimum performance level of the API categories CF and CF-2 (detailed information about passing limits for these categories is included in Specification D4485). It is also used in MIL-PRF-2104.

    5.3 The results are significant only when all details of the procedure are followed. The basic engine used in this test method has a precombustion chamber (as compared to direct injection) and is most useful in predicting performance of engines similarly equipped. This factor should be considered when extrapolating test results. It has been found useful in predicting results with high sulfur fuels (that is, greater than 0.5 wt %) and with certain preemission controlled engines. It has also been found useful when correlated with deposit control in two-stroke cycle diesel engines.

    1. Scope

    1.1 This test method covers a four-stroke cycle diesel engine test procedure for evaluating engine oils for certain high-temperature performance characteristics, particularly ring sticking, ring and cylinder wear, and accumulation of piston deposits. Such oils include both single viscosity SAE grade and multiviscosity SAE grade oils used in diesel engines. It is commonly known as the 1M-PC test (PC for Pre-Chamber) and is used in several API oil categories, notably the CF and CF-2 and the military category described in MIL-PRF-2104 (see Note 1).

    Note 1Companion test methods used to evaluate other engine oil performance characteristics for API oil categories CF and CF-2 are discussed in SAE J304. The companion tests used by the military can be found in MIL-PRF-2104.

    1.2 The values stated in SI units are to be regarded as standard. The values in parentheses are provided for information only.

    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 and health practices and determine the applicability of regulatory limitations prior to use.

    1.4 This test method is arranged as follows:

    TABLE OF CONTENTS

    Scope

    1

    Reference Documents

    2

    Terminology

    3

    Summary of Test Method

    4

    Significance and Use

    5

    Apparatus

    6

     

    Test Engine

    6.1

     

    Engine Accessories

    6.2 – 6.14

     

    Engine Oil System

    6.15

     

    Cooling System

    6.16

     

    Fuel System

    6.17

     

    Intake Air System

    6.18

     

    Exhaust System

    6.19

     

    Blowby Meter

    6.20

     

    Thermocouples

    6.21

     

    Parts

    6.22

     

    Instrumentation

    6.23

     

    Crankcase Paint

    6.24

    Reagents and Materials

    7

     

    Fuel

    7.1

     

    Test Oil

    7.2

     

    Engine Coolant

    7.3

     

    Cleaning Materials

    7.4

    Safety

    8

    Preparation of Apparatus

    9

     

    Supplementary Service Information

    9.1

     

    General Engine Inspection

    9.2

     

    Intake Air System

    9.3

     

    Cooling System

    9.4

     

    Engine Cooling System Cleaning

    9.5

     

    Instrumentation Calibration Requirements

    9.6

     

    Engine Crankcase Cleaning

    9.7

     

    Additional Oil Filter

    9.8

     

    Flushing Procedure Components

    9.9

     

    Flushing Procedures

    9.10

     

    Piston Cleaning Preparation

    9.11

     

    Cylinder Head

    9.12

     

    Fuel Nozzle

    9.13

     

    Measurement

    9.14

    Procedure

    10

     

    Engine Break-in

    10.1

     

    Pre-Test Preparations

    10.2

     

    Warm-up Procedure

    10.3

     

    Operating Conditions

    10.4

     

    Periodic Measurements

    10.5

     

    Engine Oil Level

    10.6

     

    Oil Addition Procedure

    10.7

     

    Cool-Down Procedure

    10.8

     

    Shutdowns

    10.9

     

    Fuel System

    10.10

     

    Brake Specific Oil Consumption (BSOC) Calculation

    10.11

    Inspection

    11

     

    Preparation

    11.1

     

    Inspection

    11.2

     

    Rater Training

    11.3

     

    Referee Ratings

    11.4

    Calibration of Test Method

    12

     

    Requirements

    12.1

     

    Reference Oils

    12.2

     

    Test Numbering

    12.3

     

    Definition of a Test

    12.4

     

    New Laboratories and New Test Stands

    12.5

     

    Frequency of Calibration Tests

    12.6

     

    Specified Test Parameters

    12.10

     

    Acceptance of Calibration Tests

    12.11

     

    Failing Reference Oil Calibration Tests

    12.12

     

    Non-Standard Tests

    12.13

     

    Severity Adjustments and Control Charting

    12.14

     

    Test Reporting

    12.15

     

    Reporting Reference Results

    12.16

     

    Analysis of Reference Oils

    12.17

    Precision and Bias

    13

     

    Precision

    13.1

     

    Bias

    13.2

    Keywords

    14

     

    ANNEXES

     

    Figures and Schematics

    Annex A1

     

    Report Forms

    Annex A2

     

    Test Fuel Information

    Annex A3

     

    APPENDIXES

     

    Humidity Correction Factors

    Appendix X1

     

    Report Form Examples

    Appendix X2

     

    1M-PC Multiple Testing

    Appendix X3



    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    D86 Test Method for Distillation of Petroleum Products at Atmospheric Pressure

    D93 Test Methods for Flash Point by Pensky-Martens Closed Cup Tester

    D97 Test Method for Pour Point of Petroleum Products

    D130 Test Method for Corrosiveness to Copper from Petroleum Products by Copper Strip Test

    D235 Specification for Mineral Spirits (Petroleum Spirits) (Hydrocarbon Dry Cleaning Solvent)

    D445 Test Method for Kinematic Viscosity of Transparent and Opaque Liquids (and Calculation of Dynamic Viscosity)

    D482 Test Method for Ash from Petroleum Products

    D524 Test Method for Ramsbottom Carbon Residue of Petroleum Products

    D613 Test Method for Cetane Number of Diesel Fuel Oil

    D664 Test Method for Acid Number of Petroleum Products by Potentiometric Titration

    D1319 Test Method for Hydrocarbon Types in Liquid Petroleum Products by Fluorescent Indicator Adsorption

    D1796 Test Method for Water and Sediment in Fuel Oils by the Centrifuge Method (Laboratory Procedure)

    D2422 Classification of Industrial Fluid Lubricants by Viscosity System

    D2425 Test Method for Hydrocarbon Types in Middle Distillates by Mass Spectrometry

    D2500 Test Method for Cloud Point of Petroleum Products

    D2622 Test Method for Sulfur in Petroleum Products by Wavelength Dispersive X-ray Fluorescence Spectrometry

    D4052 Test Method for Density, Relative Density, and API Gravity of Liquids by Digital Density Meter

    D4175 Terminology Relating to Petroleum, Petroleum Products, and Lubricants

    D4294 Test Method for Sulfur in Petroleum and Petroleum Products by Energy Dispersive X-ray Fluorescence Spectrometry

    D4485 Specification for Performance of Active API Service Category Engine Oils

    D4863 Test Method for Determination of Lubricity of Two-Stroke-Cycle Gasoline Engine Lubricants

    D5302 Test Method for Evaluation of Automotive Engine Oils for Inhibition of Deposit Formation and Wear in a Spark-Ignition Internal Combustion Engine Fueled with Gasoline and Operated Under Low-Temperature, Light-Duty Conditions

    D5844 Test Method for Evaluation of Automotive Engine Oils for Inhibition of Rusting (Sequence IID)

    D5862 Test Method for Evaluation of Engine Oils in Two-Stroke Cycle Turbo-Supercharged 6V92TA Diesel Engine

    D6202 Test Method for Automotive Engine Oils on the Fuel Economy of Passenger Cars and Light-Duty Trucks in the Sequence VIA Spark Ignition Engine

    Military Standard

    MIL-PRF-2104 Lubricating Oil, Internal Combustion Engine, Combat/Tactical Service


    ICS Code

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

    UNSPSC Code

    UNSPSC Code 15121501(Engine oil)


    DOI: 10.1520/D6618-14

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