Область применения

1.1 This test method coves an engine dynamometer test procedure for evaluation of intake valve deposit formation of unleaded spark-ignition engine fuels. This test uses a Ford Ranger 2.3 L four-cylinder engine. The following details the procedure, hardware, and operations used for this test.

1.2 The ASTM Test Monitoring Center (TMC) is responsible for engine test stand certification as well as issuance of information letters after test method modifications are approved by Subcommittee D02.A and Committee D02. Users of this test method shall request copies of recent information letters from the TMC to ensure proper conduct of the test method.

1.3 The values stated in SI units are to be regarded as the standard. Approximate inch-pound units are shown in parenthesis for information.

1.4 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 applicability of regulatory limitations prior to use. Specific precautionary statements are given throughout this test method.

1.4 This test method is arranged as follows:

SubjectSectionScope1Referenced Documents2Terminology3Summary of Test Method4Significance and Use5Apparatus6Laboratory Facilities6.1Test Stand Laboratory Equipment6.2Test Engine Hardware6.3Special Measurement and Assembly Equipment6.4Reagents and Materials7Fuel7.1Engine Oil and Assembly Lubricant7.2Engine Coolant7.3Solvents and Cleaners7.4Fuel Injector Test Fluid7.5Valve Lapping Compound7.6Crushed Walnut Shells7.7Desiccant7.8Hazards8Specific Hazards8.1Reference Fuel9Reference Base Fuel Batch Approval Process9.1Fuel Batch Analyses9.2Fuel Batch Shipment and Storage9.3Preparation of Apparatus10Test Stand Preparation10.1Engine Block Preparation10.2Preparation of Miscellaneous Engine Components10.3Cylinder Head Preparation10.4Cylinder Head Assembly10.5Cylinder Head Installation10.6Final Engine Assembly10.7Calibration11Test Stand Calibration11.1Instrumentation Calibration11.2Test Procedure12Pretest Procedure12.1Engine Operating Procedure12.2Periodic Measurements and Functions12.3End of Test Procedures12.4Determination of Test Results13Post-test Intake Valve Weighing Procedure13.1Photographs of Parts - General13.2Induction System Rating13.3Determination of Test Validity - Engine Conformance13.4Final Test Report14Standard Report14.1Data Acquisition Summary Report14.2Photographs of Specific Parts14.3Precision and Bias15Precision15.1Bias15.2Keywords16AnnexesDetailed Specifications and Photographs of ApparatusAnnex A1Engine Part Number ListingAnnex A2