【国外标准】 Standard Test Method for Automotive Engine Oils on the Fuel Economy of Passenger Cars and Light-Duty Trucks in the Sequence VIA Spark Ignition Engine (Withdrawn 2009)

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 3856 kg (8500 lb), or less, gross vehicle weight trucks. The tests are conducted using a specified 4.6-L spark-ignition engine on a dynamometer test stand. It applies to multiviscosity grade oils used in these applications. Companion test methods used to evaluate engine oil performance for specification requirements are discussed in the latest revision of Specification D4485.1.2 The values stated in either SI units or other units shall be regarded separately as the standard. Within the text, the SI units are stated first with the other units shown in parentheses. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other, without combining values in any way.1.3This 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 SectionIntroduction 1Referenced Documents 2Terminology 3Summary of Test Method 4Significance and Use 5Apparatus 6General 6.1Test Engine Configuration 6.2Laboratory Ambient Conditions 6.3Engine Speed and Load Control 6.4Engine Cooling System 6.5External Oil System 6.6Fuel System 6.7Engine Intake Air Supply 6.8Temperature Measurement 6.9AFR Determination 6.10Exhaust and Exhaust Back Pressure Systems 6.11Pressure Measurement and Pressure Sensor Locations 6.12Engine Hardware and Related Apparatus 6.13Miscellaneous Apparatus Related to Engine Operation 6.14Reagents and Materials 7Engine Oil 7.1Test Fuel 7.2Engine Coolant 7.3Cleaning Materials 7.4Sealing Compounds 7.5Preparation of Apparatus 8Test Stand Preparation 8.2Engine Preparation 9Cleaning of Engine Parts 9.2Engine Assembly Procedure 9.3General Assembly Instructions 9.3.1Bolt Torque Specifications 9.3.2Sealing Compounds 9.3.3New Parts Required for Each New Engine 9.3.4Harmonic Balancer 9.3.5Oil Pan 9.3.6Intake Manifold 9.3.7Camshaft Covers 9.3.8Thermostat 9.3.9Thermostat Housing 9.3.10Coolant Inlet 9.3.11Oil Filter Adapter 9.3.12Dipstick Tube 9.3.13Water Pump 9.3.14Sensors, Switches, Valves, and Positioners 9.3.15Ignition System 9.3.16Fuel Injection System 9.3.17Intake Air System 9.3.18Engine Management System (Spark and Fuel Control) 9.3.19Accessory Drive Units 9.3.20Exhaust Manifolds 9.3.21Engine Flywheel and Guards 9.3.22Lifting of Assembled Engines 9.3.23Engine Mounts 9.3.24Calibration 10BC Pre-Test Verification 10.1Engine/Test Stand Calibration 10.2Procedure 10.2.1Reporting of Reference Results 10.2.2Analysis of Reference Oils 10.2.3Flush Effectiveness Demonstration 10.2.4Instrument Calibration 10.3Engine Load Measurement System 10.3.1Fuel Flow Measurement System 10.3.2Coolant Flow Measurement System 10.3.3Thermocouple and Temperature Measurement System 10.3.4Humidity Measurement System 10.3.5Other Instrumentation 10.3.6Test Procedure 11Preparation for Initial Start-Up of New Engine 11.1Initial Engine Start-Up 11.2Coolant Flush 11.3New Engine Break-In 11.4Routine Test Operation 11.5Start-Up and Shutdown Procedures 11.5.8Flying Flush Oil Exchange Procedures 11.5.9Test Operating Stages 11.5.10Stabilization to Stage Conditions 11.5.11Stabilized BSFC Measurement Cycle 11.5.12Data Logging 11.5.13BC Oil Flush Procedure for BC Oil Before Test Oil 11.5.14BSFC Measurement of BC Oil Before Test Oil 11.5.15Test Oil Flush Procedure 11.5.16Test Oil Aging 11.5.17BSFC Measurement of Aged Test Oil 11.5.18BC Oil Flush Procedure for BC Oil After Test Oil 11.5.19BSFC Measurement for BC Oil After Test Oil 11.5.20General Test Data Logging Forms 11.5.21Diagnostic Review Procedures 11.5.22Determination of Test Results 12Final Test Report 13Validity Statement 13.1Report Format 13.2Precision, Validity, and Bias 14Precision 14.1Validity 14.2Test Stand Calibration Status 14.2.1Validity Interpretation of Deviant Operational Conditions 14.2.2Keywords 15ANNEXESRole of ASTM Test Monitoring Center Annex A1Detailed Specifications and Drawings of Apparatus Annex A2Oil Heater Cerrobase Refill Procedure Annex A3Engine Part Number Listing Annex A4Flying Flush Checklists Annex A5Safety Precautions Annex A6Report Format Annex A7Control Chart Technique for Stand/Engine Severity Adjustment (SA) Annex A8Statistical Equations for Mean and Standard Deviation Annex A9Fuel Injector Evaluation Annex A10Pre-test Maintenance Checklist Annex A11APPENDIXESProcurement of Test Materials Appendix X1Data Dictionary Appendix X2