Область применения

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.

1.2 This test method also provides for the running of an abbreviated length test that is referred to as the VIBSJ. The procedure for VIBSJ is identical to the Sequence VIB with the exception of the items specifically listed in Annex A13. The procedure modifications listed in refer to the corresponding section of the Sequence VIB test method.

1.3 The unit values stated in this test method shall be regarded as the standard. Values given in parentheses are provided for information purposes only. SI units are considered the primary units for this test method. The only exception is where there is no direct SI equivalent such as screw threads, national pipe threads/diameters, tubing size, and so forth.

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:

SubjectSectionIntroductionScope1Referenced Documents2Terminology3Summary of Test Method4Significance and Use5Apparatus6General6.1Test Engine Configuration6.2Laboratory Ambient Conditions6.3Engine Speed and Load Control6.4Dynamometer6.4.1Dynamometer Load6.4.2Engine Cooling System6.5External Oil System6.6Fuel System6.7Fuel Flow Measurement6.7.2Fuel Temperature and Pressure Control to the Fuel Flow Meter6.7.3Fuel Temperature and Pressure Control to Engine Fuel Rail6.7.4Fuel Supply Pumps6.7.5Fuel Filtering6.7.6Engine Intake Air Supply6.8Intake Air Humidity6.8.1Intake Air Filtration6.8.2Intake Air Pressure Relief6.8.3Temperature Measurement6.9Thermocouple Location6.9.5AFR Determination6.10Exhaust and Exhaust Back Pressure Systems6.11Exhaust Manifolds6.11.1Laboratory Exhaust System6.11.2Exhaust Back Pressure6.11.3Pressure Measurement and Pressure Sensor Locations6.12Engine Oil6.12.2Fuel to Fuel Flow Meter6.12.3Fuel to Engine Fuel Rail6.12.4Exhaust Back Pressure6.12.5Intake Air6.12.6Intake Manifold Vacuum/Absolute Pressure6.12.7Coolant Flow Differential Pressure6.12.8Crankcase Pressure6.12.9Engine Hardware and Related Apparatus6.13Test Engine Configuration6.13.1ECM/EEC (Engine Control) Module6.13.2Thermostat/Orfice Plate6.13.3Intake Manifold6.13.4Flywheel6.13.5Wiring Harnesses6.13.6EGR Block-Off Plate6.13.7Oil Pan6.13.8Oil Pump Screen and Pickup Tube6.13.9Idle Speed Control Solenoid (ISC) Block-Off Plate6.13.10Engine Water Pump6.13.11Thermostat Housing6.13.12Oil Filter Adapter6.13.13Fuel Rail6.13.14Miscellaneous Apparatus Related to Engine Operation6.14Timing Light6.14.1Reagents and Materials7Engine Oil7.1Test Fuel7.2Engine Coolant7.3Cleaning Materials7.4Preparation of Apparatus8Test Stand Preparation8.2Engine Preparation9Cleaning of Engine Parts9.2Engine Assembly Procedure9.3General Assembly Instructions9.3.1Bolt Torque Specifications9.3.2Sealing Compounds9.3.3Harmonic Balancer9.3.5Oil Pan9.3.6Intake Manifold9.3.7Camshaft Covers9.3.8Thermostat9.3.9Thermostat Housing9.3.10Coolant Inlet9.3.11Oil Filter Adapter9.3.12Dipstick Tube9.3.13Water Pump9.3.14Sensors, Switches, Valves and Positioners9.3.15Ignition System9.3.16Fuel Injection System9.3.17Intake Air System9.3.18Engine Management System (Spark and Fuel Control)9.3.19Accessory Drive Units9.3.20Exhaust Manifolds9.3.21Engine Flywheel and Guards9.3.22Lifting of Assembled Engines9.3.23Engine Mounts9.3.24Calibration10Stand/Engine Calibration10.1Procedure10.1.1Reporting of Reference Results10.1.2Analysis of Reference/Calibration Oils10.1.3Instrument Calibration10.2Engine Load Measurement System10.2.1Fuel Flow Measurement System10.2.2Coolant Flow Measurement System10.2.3Thermocouple and Temperature Measurement System10.2.4Humidity Measurement System10.2.5Other Instrumentation10.2.6Test Procedure11Preparation for Initial Start-up of New Engine11.1External Oil System11.1.1Flush Effectiveness Demonstration11.1.2Preparation for Oil Charge11.1.3Oil Charge for Coolant Flush11.1.4Engine Coolant Charge for Coolant Flush11.1.5Initial Engine Start-up11.2Coolant Flush11.3New Engine Break-In11.4Oil Charge for Break-In11.4.2Break-In Operating Conditions11.4.3Routine Test Operation11.5Start-Up and Shutdown Procedures11.5.8Flying Flush Oil Exchange Procedures11.5.9Test Operating Stages11.5.10Stabilization to Stage Conditions11.5.11Stabilized BSFC Measurement Cycle11.5.12Data Logging11.5.13BC Oil Flush Procedure for BC Oil Before Test Oil11.5.14BSFC Measurement of BC Oil Before Test Oil11.5.15Test Oil Flush Procedure11.5.16Test Oil Aging11.5.17BSFC Measurement of Aged (Phase I) Test Oil11.5.18Aging Phase II11.5.19Oil Consumption and Sampling11.5.20BSFC Measurement of Aged (Phase II) Test Oil11.5.21BC Oil Flush Procedure for BC Oil After Test Oil11.5.22BSFC Measurement for BC Oil After Test Oil11.5.23General Test Data Logging Forms11.5.24Diagnostic Review Procedures11.5.25Determination of Test Results12FEI1 and FEI2 Calculations12.1Used Oil Analysis12.2Final Test Report13Validity Statement13.1Report Format13.2Precision and Bias14Precision14.1Validity14.2Test Stand Calibration Status14.2.1Validity Interpretation of Deviant Operational Conditions14.2.2Bias14.3KeywordsAnnexes15AnnexesRole of ASTM TMCAnnex A1Detailed Specifications and Drawings of ApparatusAnnex A2Oil Heater Cerrobase Refill ProcedureAnnex A3Engine Part Number ListingAnnex A4Flying Flush ChecklistsAnnex A5Safety PrecautionsAnnex A6Report FormatAnnex A7Statistical Equations for Mean and Standard DeviationsAnnex A8Oil Sump Full Level Determination Consumption Measurement Calibration ProcedureAnnex A9Fuel Injector EvaluationAnnex A10Pre-test Maintenance ChecklistAnnex A11Blow-by Ventilation System RequirementsVIBSJ Abbreviated Length Test RequirementsAnnex A13AppendixProcurement of Test MaterialsAppendix X1