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 Exceptions - Where 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:
SubjectSection Introduction Scope1 Referenced Documents2 Terminology3 Summary of Test Method4 Significance and Use5 Apparatus6 General6.1 Test Engine Configuration6.2 Laboratory Ambient Conditions6.3 Engine Speed and Torque Control6.4 Dynamometer6.4.1 Dynamometer Torque6.4.2 Engine Cooling System6.5 External Oil System6.6 Fuel System6.7 Fuel Flow Measurement6.7.2 Fuel Temperature and Pressure Control to the Fuel
Flowmeter6.7.3 Fuel Temperature and Pressure Control to Engine Fuel Rail6.7.4 Fuel Supply Pumps6.7.5 Fuel Filtering6.7.6 Engine Intake Air Supply6.8 Intake Air Humidity6.8.1 Intake Air Filtration6.8.2 Intake Air Pressure Relief6.8.3 Temperature Measurement6.9 Thermocouple Location6.9.5 AFR Determination6.10 Exhaust and Exhaust Back Pressure Systems6.11 Exhaust Manifolds6.11.1 Laboratory Exhaust System6.11.2 Exhaust Back Pressure6.11.3 Pressure Measurement and Pressure Sensor Locations6.12 Engine Oil6.12.2 Fuel to Fuel Flowmeter6.12.3 Fuel to Engine Fuel Rail6.12.4 Exhaust Back Pressure6.12.5 Intake Air6.12.6 Intake Manifold Vacuum/Absolute Pressure6.12.7 Coolant Flow Differential Pressure6.12.8 Crankcase Pressure6.12.9 Engine Hardware and Related Apparatus6.13 Test Engine Configuration6.13.1 ECU (Power Control Module)6.13.2 Thermostat Block-Off Adapter Plate6.13.3 Wiring Harness6.13.4 Oil Pan6.13.5 Engine Water Pump Adapter Plate6.13.6 Thermostat Block-Off Plate6.13.7 Oil Filter Adapter Plate6.13.8 Modified Throttle Body Assembly6.13.9 Fuel Rail6.13.10 Miscellaneous Apparatus Related to Engine Operation6.14 Reagents and Materials7 Engine Oil7.1 Test Fuel7.2 Engine Coolant7.3 Cleaning Materials7.4 Preparation of Apparatus8 Test Stand Preparation8.2 Engine Preparation9 Cleaning of Engine Parts9.3 Engine Assembly Procedure9.4 General Assembly Instructions9.4.1 Bolt Torque Specifications9.4.2 Sealing Compounds9.4.3 Harmonic Balancer9.4.5 Thermostat9.4.6 Coolant Inlet9.4.7 Oil Filter Adapter9.4.8 Dipstick Tube9.4.9 Sensors, Switches, Valves, and Positioner's9.4.10 Ignition System9.4.11 Fuel Injection System9.4.12 Intake Air System9.4.13 Engine Management System9.4.14 Accessory Drive Units9.4.15 Exhaust Manifolds9.4.16 Engine Flywheel and Guards9.4.17 Lifting of Assembled Engines9.4.18 Engine Mounts9.4.19 Non-Phased Camshaft Gears9.4.20 Internal Coolant Orifice9.4.21 Calibration10 Stand/Engine Calibration10.1 Procedure10.1.1 Reporting of Reference Results10.1.2 Analysis of Reference/Calibration Oils10.1.3 Instrument Calibration10.2 Engine Torque Measurement System10.2.3 Fuel Flow Measurement System10.2.4 Coolant Flow Measurement System10.2.5 Thermocouple and Temperature Measurement System10.2.6 Humidity Measurement System10.2.7 Other Instrumentation10.2.8 Test Procedure11 External Oil System11.1 Flush Effectiveness Demonstration11.2 Preparation for Oil Charge11.3 Initial Engine Start-Up11.4 New Engine Break-In11.5 Oil Charge for Break-In11.5.2 Break-In Operating Conditions11.5.3 Standard Requirements for Break-In11.5.4 Routine Test Operation11.6 Start-Up and Shutdown Procedures11.6.1 Flying Flush Oil Exchange Procedures11.6.2 Test Operating Stages11.6.3 Stabilization to Stage Conditions11.6.4 Stabilized BSFC Measurement Cycle11.6.5 BLB1 Oil Flush Procedure for BL Oil Before Test Run 111.6.6 BSFC Measurement of BLB1 Oil Before Test Oil11.6.7 BLB2 Oil Flush Procedure for BL Oil Before Test Oil Run 211.6.8 BSFC Measurement of BLB2 Oil Before Test Oil11.6.9 Percent Delta Calculation for BLB1 vs. BLB211.6.10 Test Oil Flush Procedure11.6.11 Test Oil Aging, Phase I11.6.12 BSFC Measurement of Aged (Phase I) Test Oil11.6.13 Test Oil Aging, Phase II11.6.14 BSFC Measurement of Aged (Phase II) Test Oil11.6.15 Oil Consumption and Sampling11.6.16 Flush Procedure for BL Oil (BLA) After Test Oil11.6.17 General Test Data Logging Forms11.6.18 Diagnostic Review Procedures11.6.19 Determination of Test Results12 Final Test Report13 Precision and Bias15 Keywords16 Annexes The Role of the ASTM Test Monitoring Center and the
Calibration ProgramAnnex A1 Detailed Specifications and Drawings of ApparatusAnnex A2 Oil Heater Cerrobase Refill ProcedureAnnex A3 Engine Part Number ListingAnnex A4 Safety PrecautionsAnnex A5 Report FormatAnnex A6 Statistical Equations for Mean and Standard DeviationsAnnex A7 Oil Sump Full Level Determination Consumption
Measurement Calibration ProcedureAnnex A8 Fuel Injector EvaluationAnnex A9 Pre-test Maintenance ChecklistAnnex A10 Blow-by Ventilation System RequirementsAnnex A11 Calculation of Test ResultsAnnex A12 Calculation of Unweighted Baseline ShiftAnnex A13 Non-Phased Cam Gear and Position Actuator Installation ProcedureAnnex A14 Appendix Procurement of Test MaterialsAppendix X1
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