Tiêu chuẩn quốc tế

• Số hiệu / Standard Number: ASTM D6750-16
• Năm ban hành / Publication date: 2016
• Tình trạng / Status: W - Hết hiệu lực
• Tên tiếng Anh / Title in English: Standard Test Methods for Evaluation of Engine Oils in a High-Speed, Single-Cylinder Diesel Engine-1K Procedure (0 - 4 % Fuel Sulfur) and 1N Procedure (0 - 04 % Fuel Sulfur)
• Chỉ số phân loại Quốc tế (ICS) / By field: 75.100 - Chất bôi trơn, dầu công nghiệp và các sản phẩm liên quan
• Số trang / Page: 70
• Phạm vi áp dụng / Scope of standard: 1.1 These test methods cover the performance of engine oils intended for use in certain diesel engines. They are performed in a standardized high-speed, single-cylinder diesel engine by either the 1K (0.4 % mass fuel sulfur) or 1N (0.04 % mass fuel sulfur) procedure.3 The only difference in the two test methods is the fuel used. Piston and ring groove deposit-forming tendency and oil consumption are measured. Also, the piston, the rings, and the liner are examined for distress and the rings for mobility. These test methods are required to evaluate oils intended to satisfy API service categories CF-4 and CH-4 for 1K, and CG-4 for 1N of Specification D4485. 1.2 These test methods, although based on the original Caterpillar 1K/1N procedures,3 also embody TMC information letters issued before these test methods were first published. These test methods are subject to frequent change. Until the next revision of these test methods, TMC will update changes in these test methods by the issuance of information letters which shall be obtained from TMC (see Annex A1 - Annex A4). 1.3 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard. 1.3.1 Exception-Where there is no direct SI equivalent such as screw threads, national pipe threads/diameters, tubing size, or single source equipment specified. Also Brake Specific Fuel Consumption is measured in kilograms per kilowatthour. 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 the applicability of regulatory limitations prior to use. Specific precautionary statements appear throughout the text. Being engine tests, these test methods do have definite hazards that shall be met by safe practices (see Annex A19 on Safety Precautions). 1.5 The following is the Table of Contents: Section Introduction Scope 1 Referenced documents 2 Terminology 3 Summary of Test Methods 4 Significance and Use 5 Apparatus 6 General Laboratory Requirements 6.1 Test Engine 6.2 Test Engine Accessories and Parts 6.3 Reagents and Materials 7 Test Oil Sample Requirements 8 Preparation of Apparatus 9 Engine Inspection 9.1 Engine Pre-Test Lubrication System Flush 9.2 Engine Pre-Test Measurements and Inspections 9.3 Engine Assembly 9.4 Pressure Testing of Fuel System Assembly 9.5 Calibration of Engine Test Stand 10 General Requirements and Frequency of Calibration 10.1 Runs 10.2 Specified Test Parameters 10.3 Calibration Test Acceptance Criteria 10.4 Action on Rejection of Calibration Test 10.5 Test Numbering 10.6 Reference Oils 10.7 Severity Adjustments 10.8 Engine Operating Procedure 11 Engine Run-In 11.1 Cool-Down Procedure 11.2 Warm-Up Procedure 11.3 Operating Conditions and Oil Additions 11.4 Measurement of Oil Consumption 11.5 Sampling Used Oil 11.6 Shutdowns, Lost Time and Off Tolerance Conditions 11.7 Recording of Exhaust Temperature 11.8 Air-Fuel Ratio Measurement 11.9 Recording of Engine Conditions 11.10 Humidity Requirements/Calibration/Measurement 11.11 Inspections, Photographs and Measurements 12 Reference to Reporting Form 12.1 Pre-Test Measurements of Engine Parts 12.2 Post-Test Information 12.3 Oil Inspections 12.4 Report 13 General Directions 13.1 Electronic Transmission of Test Results (Optional) 13.12 Reporting Calibration Test Results 13.13 Precision and Bias 14 Keywords 15 ANNEXES ASTM Test Monitoring Center Organization Annex A1 ASTM Test Monitoring Center: Calibration Procedures Annex A2 ASTM Test Monitoring Center: Maintenance Activities Annex A3 ASTM Test Monitoring Center: Related Information Annex A4 Specifications for Test Engine and Engine Build Annex A5 Intake Air System Details Annex A6 Exhaust System Details Annex A7 Cooling System Details Annex A8 Oil System Modifications and Instrument Locations Annex A9 Other Pressure and Temperature Measurement Locations Annex A10 Oil Consumption Linear Regression Method Annex A11 Test Fuel Specifications Annex A12 Lubrication System, Flush Apparatus and Procedure Annex A13 Engine Operating Conditions Annex A14 Procedure for Rating Piston and Liner Annex A15 Calculation of Percent Offset and Percent Deviation Annex A16 1K/1N Test Reporting Annex A17 Parts List by Part Number (P/N) and Warranty Annex A18 Safety Precautions Annex A19 APPENDIXES Humidity Data Appendix X1 Statistical Equations for Mean and Standard Deviation Appendix X2 Examples of Forms for Reporting Appendix X3 Optional Recording of Oil Pass Limits Appendix X4