Tiêu chuẩn quốc tế
|
Số hiệu
Standard Number
ASTM D7468-08
Năm ban hành 2008
Publication date
Tình trạng
W - Hết hiệu lực
Status |
|
Tên tiếng Anh
Title in English Standard Test Method for Cummins ISM Test
|
|
Chỉ số phân loại Quốc tế (ICS)
By field |
|
Số trang
Page 34
Giá:
Price Liên hệ / Contact us
|
|
Phạm vi áp dụng
Scope of standard 1.1 The test method covers a heavy-duty diesel engine test procedure conducted under high soot conditions to evaluate oil performance with regard to valve train wear, top ring wear, sludge deposits, and oil filter plugging in an EGR environment. This test method is commonly referred to as the Cummins ISM Test. 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 Exception - The only exception is where there is no direct SI equivalent such as screw threads, national pipe threads/diameters, and tubing sizes. 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. See Annex A1 for general safety precautions. 1.4 Table of Contents: SectionScope1Referenced Documents2Terminology3Summary of Test Method4Significance and Use5Apparatus6 Test Engine Configuration6.1 Test Engine6.1.1 Oil Heat Exchanger, Adapter Blocks, Block Off Plate6.1.2 Oil Filter Head Modification6.1.3 Oil Pan Modification6.1.4 Engine Control Module (ECM)6.1.5 Engine Position Sensor6.1.6 Intake Manifold Temperature Sensor6.1.7 Barometric Pressure Sensor6.1.8 Turbocharger Controller6.1.9 Power Supply Voltage6.1.10 Air Compressor and Fuel Pump6.1.11 Engine Block Preparation6.1.12 Test Stand Configuration6.2 Engine Mounting6.2.1 Intake Air System6.2.2 Aftercooler6.2.3 Exhaust System6.2.4 Exhaust Gas Recirculation System6.2.5 Fuel System6.2.6 Coolant System6.2.7 Pressurized Oil Fill System6.2.8 External Oil System6.2.9 Crankcase Aspiration6.2.10 Blowby Rate6.2.11 System Time Responses6.3 Oil Sample Containers6.4 Mass Balance6.5Engine and Cleaning Fluids7 Test Oil7.1 Test Fuel7.2 Engine Coolant7.3 Pentane7.4 Solvent7.5Preparation of Apparatus8 Cleaning of Parts8.1 General8.1.1 Engine Block8.1.2 Cylinder Head8.1.3 Rocker Cover and Oil Pan8.1.4 External Oil System8.1.5 Crosshead Cleaning and Measurement8.1.6 Rod Bearing Cleaning and Measurement8.1.7 Ring Cleaning and Measurement8.1.8 Injector Adjusting Screw Cleaning and Measurement8.1.9 Engine Assembly8.2 General8.2.1 Parts Reuse and Replacement8.2.2 Build-Up Oil8.2.3 Coolant Thermostat8.2.4 Oil Thermostat8.2.5 Fuel Injectors8.2.6 New Parts8.2.7 Operational Measurements8.3 Units and Formats8.3.1 Instrumentation Calibration8.3.2 Temperatures8.3.3 Pressures8.3.4 Flow Rates8.3.5 Intake and Exhaust CO2 Measurement8.3.6Engine/Stand Calibration and Non-Reference Oil Tests9 General9.1 New Test Stand9.2 New Test Stand Calibration9.2.1 Stand Calibration Period9.3 Stand Modification and Calibration Status9.4 Test Numbering System9.5 General9.5.1 Reference Oil Tests9.5.2 Non-Reference Oil Tests9.5.3 Reference Oil Test Acceptance9.6 Reference Oil Accountability9.7 Last Start Date9.8 Donated Reference Oil Test Programs9.9 Adjustments to Reference Oil Calibration Periods9.10 Procedural Deviations9.10.1 Parts and Fuel Shortages9.10.2 Reference Oil Test Data Flow9.10.3 Special Use of the Reference Oil Calibration System9.10.4Test Procedure10 Engine Installation and Stand Connections10.1 Coolant System Fill10.2 Oil Fill for Break-in10.3 Engine Build Committed10.3.3 Fuel Samples10.4 Engine Warm-up10.5 Shutdown During Warm-up10.5.1 Engine Break-in10.6 Shutdown and Maintenance10.7 Normal Shutdown10.7.1 Emergency Shutdown10.7.2 Maintenance10.7.3 Downtime10.7.4 200-h Test Procedure10.8 Oil Fill for Test10.8.2 Operating Conditions10.8.4 Injection Timing Change10.8.5 Mass % Soot Validity10.8.6 Test Timer10.8.7 Operational Data Acquisition10.8.8 Oil Sampling10.8.9 Oil Addition10.8.10 End of Test (EOT)10.9 Engine Disassembly10.9.3Calculations, Ratings and Test Validity11 Crosshead Mass Loss11.1 Crosshead Mass Loss Correction Factor11.1.8 Injector Adjusting Screw Mass Loss11.2 Injector Adjusting Screw Correction Factor11.2.5 Ring Mass Loss11.3 Sludge Ratings11.4 Oil Filter Plugging11.5 Oil Analyses11.6 Oil Consumption11.7 Fuel Analyses11.8 Additional Analysis11.8.1 Assessment of Operational Validity11.9 Assessment of Test Interpretability11.10Test Report12 Report Forms12.1 Reference Oil Test12.2 Electronic transmission of Test Results12.2.1Precision and Bias14 Precision14.1 Intermediate Precision Conditions14.1.1 Reproducibility Conditions14.1.2 Bias14.2Keywords15AnnexesSafety PrecautionsAnnex A1Intake Air AftercoolerAnnex A2Engine Build Parts KitAnnex A3Sensor Locations, Special Hardware, and Engine Block ModificationsAnnex A4External Oil SystemAnnex A5Fuel SpecificationAnnex A6Cummins Service PublicationsAnnex A7Specified Units and FormatsAnnex A8Report Forms and Data DictionaryAnnex A9Sludge Rating WorksheetsAnnex A10Oil AnalysesAnnex A11Determination of Operational ValidityAnnex A12Exhaust CO2 Sampling ProbeAnnex A13ISM Merit Rating CalculationAnnex A14AppendixTypical System ConfigurationsAppendix X1
|