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1.1 This test method covers an engine test procedure for the measurement of the effects of automotive engine oils on the fuel economy of passenger cars and light-duty trucks with gross vehicle weight 3856 kg or less. The tests are conducted using a specified spark-ignition engine with a displacement of 3.6 L (General Motors) on a dynamometer test stand. It applies to multi viscosity grade oils used in these applications.

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 ExceptionsWhere there is no direct equivalent such as the units for screw threads, National Pipe threads/diameters, tubing size, and single source supply equipment specifications. Additionally, Brake Fuel Consumption (BSFC) is measured in kilograms per kilowatthour.

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:

Subject Section
Introduction
Scope 1
Referenced Documents 2
Terminology 3
Summary of Test Method 4
Significance and Use 5
Apparatus 6
General 6.1
Test Engine Configuration 6.2
Laboratory Ambient Conditions 6.3
Engine Speed and Torque Control 6.4
Dynamometer 6.4.1
Dynamometer Torque 6.4.2
Engine Cooling System 6.5
External Oil System 6.6
Fuel System 6.7
Fuel Flow Measurement 6.7.2
Fuel Temperature and Pressure Control to the Fuel
Flowmeter
6.7.3
Fuel Temperature and Pressure Control to Engine Fuel Rail 6.7.4
Fuel Supply Pumps 6.7.5
Fuel Filtering 6.7.6
Engine Intake Air Supply 6.8
Intake Air Humidity 6.8.1
Intake Air Filtration 6.8.2
Intake Air Pressure Relief 6.8.3
Temperature Measurement 6.9
Thermocouple Location 6.9.5
AFR Determination 6.10
Exhaust and Exhaust Back Pressure Systems 6.11
Exhaust Manifolds 6.11.1
Laboratory Exhaust System 6.11.2
Exhaust Back Pressure 6.11.3
Pressure Measurement and Pressure Sensor Locations 6.12
Engine Oil 6.12.2
Fuel to Fuel Flowmeter 6.12.3
Fuel to Engine Fuel Rail 6.12.4
Exhaust Back Pressure 6.12.5
Intake Air 6.12.6
Intake Manifold Vacuum/Absolute Pressure 6.12.7
Coolant Flow Differential Pressure 6.12.8
Crankcase Pressure 6.12.9
Engine Hardware and Related Apparatus 6.13
Test Engine Configuration 6.13.1
ECU (Power Control Module) 6.13.2
Thermostat Block-Off Adapter Plate 6.13.3
Wiring Harness 6.13.4
Oil Pan 6.13.5
Engine Water Pump Adapter Plate 6.13.6
Thermostat Block-Off Plate 6.13.7
Oil Filter Adapter Plate 6.13.8
Modified Throttle Body Assembly 6.13.9
Fuel Rail 6.13.10
Miscellaneous Apparatus Related to Engine Operation 6.14
Reagents and Materials 7
Engine Oil 7.1
Test Fuel 7.2
Engine Coolant 7.3
Cleaning Materials 7.4
Preparation of Apparatus 8
Test Stand Preparation 8.2
Engine Preparation 9
Cleaning of Engine Parts 9.3
Engine Assembly Procedure 9.4
General Assembly Instructions 9.4.1
Bolt Torque Specifications 9.4.2
Sealing Compounds 9.4.3
Harmonic Balancer 9.4.5
Thermostat 9.4.6
Coolant Inlet 9.4.7
Oil Filter Adapter 9.4.8
Dipstick Tube 9.4.9
Sensors, Switches, Valves, and Positioner's 9.4.10
Ignition System 9.4.11
Fuel Injection System 9.4.12
Intake Air System 9.4.13
Engine Management System 9.4.14
Accessory Drive Units 9.4.15
Exhaust Manifolds 9.4.16
Engine Flywheel and Guards 9.4.17
Lifting of Assembled Engines 9.4.18
Engine Mounts 9.4.19
Non-Phased Camshaft Gears 9.4.20
Internal Coolant Orifice 9.4.21
Calibration 10
Stand/Engine Calibration 10.1
Procedure 10.1.1
Reporting of Reference Results 10.1.2
Analysis of Reference/Calibration Oils 10.1.3
Instrument Calibration 10.2
Engine Torque Measurement System 10.2.3
Fuel Flow Measurement System 10.2.4
Coolant Flow Measurement System 10.2.5
Thermocouple and Temperature Measurement System 10.2.6
Humidity Measurement System 10.2.7
Other Instrumentation 10.2.8
Test Procedure 11
External Oil System 11.1
Flush Effectiveness Demonstration 11.2
Preparation for Oil Charge 11.3
Initial Engine Start-Up 11.4
New Engine Break-In 11.5
Oil Charge for Break-In 11.5.2
Break-In Operating Conditions 11.5.3
Standard Requirements for Break-In 11.5.4
Routine Test Operation 11.6
Start-Up and Shutdown Procedures 11.6.1
Flying Flush Oil Exchange Procedures 11.6.2
Test Operating Stages 11.6.3
Stabilization to Stage Conditions 11.6.4
Stabilized BSFC Measurement Cycle 11.6.5
BLB1 Oil Flush Procedure for BL Oil Before Test Run 1 11.6.6
BSFC Measurement of BLB1 Oil Before Test Oil 11.6.7
BLB2 Oil Flush Procedure for BL Oil Before Test Oil Run 2 11.6.8
BSFC Measurement of BLB2 Oil Before Test Oil 11.6.9
Percent Delta Calculation for BLB1 vs. BLB2 11.6.10
Test Oil Flush Procedure 11.6.11
Test Oil Aging, Phase I 11.6.12
BSFC Measurement of Aged (Phase I) Test Oil 11.6.13
Test Oil Aging, Phase II 11.6.14
BSFC Measurement of Aged (Phase II) Test Oil 11.6.15
Oil Consumption and Sampling 11.6.16
Flush Procedure for BL Oil (BLA) After Test Oil 11.6.17
General Test Data Logging Forms 11.6.18
Diagnostic Review Procedures 11.6.19
Determination of Test Results 12
Final Test Report 13
Precision and Bias 15
Keywords 16
Annexes
The Role of the ASTM Test Monitoring Center and the
Calibration Program
Annex A1
Detailed Specifications and Drawings of Apparatus Annex A2
Oil Heater Cerrobase Refill Procedure Annex A3
Engine Part Number Listing Annex A4
Safety Precautions Annex A5
Report Format Annex A6
Statistical Equations for Mean and Standard Deviations Annex A7
Oil Sump Full Level Determination Consumption
Measurement Calibration Procedure
Annex A8
Fuel Injector Evaluation Annex A9
Pre-test Maintenance Checklist Annex A10
Blow-by Ventilation System Requirements Annex A11
Calculation of Test Results Annex A12
Calculation of Unweighted Baseline Shift Annex A13
NonPhased Cam Gear and Position Actuator Installation Procedure Annex A14
Appendix
Procurement of Test Materials Appendix X1

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Published:
04/15/2012
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