GB/T 5487-2015 Research octane number of gasoline
AI-translated method card — human verification pending. This is not an official translation of the standard. Unclear source values remain unverified; check the original standard and product certificate before use.
Card type: Test method
1. Method number / full title / English title / replacement relationship
- Standard number: GB/T 5487—2015
- Chinese title: Determination of knock characteristics of gasoline — Research method
- English title: Determination of the gasoline octane number—Test method for research octane number
- Replacement relationship: replaces GB/T 5487—1995 (original foreword: this standard replaces GB/T 5487—1995 "Determination of knock characteristics of gasoline — Research method")
- Previous editions: GB/T 5487—1985, GB/T 5487—1995 (original foreword)
- Adoption relationship: no explicit "adoption" statement is provided in the available source (the original only cites CFR engine, ASTM RR:D02-1208, etc., and does not give a conclusion on adoption of ISO/ASTM by this standard)
2. Scope of application and non-applicability
- Scope of application: This standard specifies the test method for determining the knock characteristics of gasoline (research method) using the CFR engine (original 1 clause, source-text extraction unclear in the source text, requires confirmation against the source standard).
- Applicable objects: applicable to the determination of the research octane number of spark-ignition engine fuels (gasoline) (original 1 clause, source-text extraction unclear in the source text, requires confirmation against the source standard).
- Octane number range: original 1 clause note: this standard applies to the octane number range 0–120; the research octane number range specified by this standard is 40–120; for fuels with a research octane number in the range 88–101, correction may be made using toluene calibration fuel (original note, source-text extraction unclear in the source text, requires confirmation against the source standard).
- Non-applicability: no explicit "non-applicability" clause is provided in the available source.
3. Method principle
- No centralized, complete "principle" chapter is provided in the available source (Chapter 3 is terms and definitions, Chapter 4 is the method summary/principle description, source-text extraction unclear in the source text).
- Extractable key points (original 3.1.20 research octane number definition): using the CFR engine, under specified test conditions (600 r/min±6 r/min), compare with standard fuels and use knock intensity to determine the antiknock value of the fuel (original 3.1.20, source-text extraction unclear in the source text, requires confirmation against the source standard).
- Original Chapter 4 (method summary) source-text extraction is severely unclear in the source text; the specific step description requires confirmation against the source standard.
4. Reagents and materials (purity / preparation)
- Toluene (2,2,4- trimethylpentane): purity ≥99.75% (mass fraction), n-heptane content ≤0.10% (mass fraction) (according to the GB/T 8120 method), and sulfur content ≤0.5 mg/L (original 8.3.1, source-text extraction unclear in the source text, requires confirmation against the source standard).
- n-Heptane: purity ≥99.75% (mass fraction), toluene content ≤0.10% (mass fraction) (according to the GB/T 8120 method), and sulfur content ≤0.5 mg/L (original 8.3.2, source-text extraction unclear in the source text, requires confirmation against the source standard).
- 80 standard fuel: a standard fuel prepared from toluene and n-heptane with an octane number of 80, toluene content 80% (mass fraction) ±0.1% (mass fraction) (original 8.3.3, source-text extraction unclear in the source text, requires confirmation against the source standard).
- Toluene calibration fuel (TEL calibration fuel): composed of 70% (mass fraction) toluene and 30% (mass fraction) n-heptane (original 8.4.1, source-text extraction unclear in the source text, requires confirmation against the source standard); density (15.6/15.6℃) 0.957–0.967 (original 8.4.2, source-text extraction unclear in the source text, requires confirmation against the source standard).
- Isooctane (standard fuel component): the original 8.5.1 contains "isooctane ≥99.5% (mass fraction) (according to the GB/T 3144 method), sulfur content ≤5 mg/kg (according to the SH/T 0176 method), lead content ≤200 mg/kg (according to the GB/T 11133 method)" (source-text extraction unclear in the source text, requires confirmation against the source standard).
- Other reagents: the original 8.6 mentions "determine the SH/T or GB/T method of fuels, solvents, etc. according to relevant methods" (source-text extraction unclear in the source text, requires confirmation against the source standard).
- Preparation: the original 8.3.4, 8.4.3, 8.4.4 involve preparation of standard fuel and preparation of toluene calibration fuel; the specific steps source-text extraction are severely unclear in the source text and require confirmation against the source standard.
5. Instruments and equipment
- CFR engine (original 7.1, source-text extraction unclear in the source text, requires confirmation against the source standard).
- Cylinder diameter: 82.55 mm (3.250 in) (original Table 1, source-text extraction unclear in the source text, requires confirmation against the source standard).
- Stroke: 114.30 mm (4.50 in) (original Table 1, source-text extraction unclear in the source text, requires confirmation against the source standard).
- Displacement: 0.61 L (37.33 in³) (original Table 1, source-text extraction unclear in the source text, requires confirmation against the source standard).
- Compression ratio range: 4:1–18:1 (original Table 1, source-text extraction unclear in the source text, requires confirmation against the source standard).
- Knock measuring device: knock sensor, knock meter (analog 0–100, digital 0–999) (original 3.1.16, 3.1.17, source-text extraction unclear in the source text, requires confirmation against the source standard).
- Carburetor/fuel supply system: the original 7.1, 10.3 involve this; the specific parameters source-text extraction are severely unclear in the source text and require confirmation against the source standard.
- Ignition system: the original 10.3.15 involves this; the specific parameters source-text extraction are severely unclear in the source text and require confirmation against the source standard.
- Valve clearance: intake valve 0.20 mm±0.025 mm (0.008 in±0.001 in) (original 10.3.2, source-text extraction unclear in the source text, requires confirmation against the source standard).
- Spark plug gap: 0.51 mm±0.13 mm (0.020 in±0.005 in) (original 10.3.16, source-text extraction unclear in the source text, requires confirmation against the source standard).
- Crankcase lubricating oil pressure: 172 kPa–207 kPa (25 psi–30 psi) (original 10.3.3, source-text extraction unclear in the source text, requires confirmation against the source standard).
- Crankcase lubricating oil temperature: 57℃±8℃ (135℉–±15℉) (original 10.3.4, source-text extraction unclear in the source text, requires confirmation against the source standard).
- Coolant temperature: 100℃±1.5℃ (212℉–±3℉) (original 10.3.5, source-text extraction unclear in the source text, requires confirmation against the source standard).
- Intake air temperature: 52℃±1℃ (125℉–±2℉) (original 10.3.6, source-text extraction unclear in the source text, requires confirmation against the source standard).
- Intake air pressure: 101.3 kPa (29.92 inHg) (original 10.3.6, source-text extraction unclear in the source text, requires confirmation against the source standard).
- Ignition advance angle: the original 10.3.15 involves this; the specific parameters source-text extraction are severely unclear in the source text and require confirmation against the source standard.
- Engine speed: 600 r/min±6 r/min (original 3.1.20, 10.2.1, source-text extraction unclear in the source text, requires confirmation against the source standard).
- Other equipment: listed in the original 7.1 Figure 1 and Table 1; source-text extraction is severely unclear in the source text and requires confirmation against the source standard.
6. Recommended operating conditions
- Engine speed: 600 r/min±6 r/min (original 3.1.20, 10.2.1, source-text extraction unclear in the source text, requires confirmation against the source standard).
- Coolant temperature: 100℃±1.5℃ (212℉–±3℉) (original 10.3.5, source-text extraction unclear in the source text, requires confirmation against the source standard).
- Intake air temperature: 52℃±1℃ (125℉–±2℉) (original 10.3.6, source-text extraction unclear in the source text, requires confirmation against the source standard).
- Crankcase lubricating oil temperature: 57℃±8℃ (135℉–±15℉) (original 10.3.4, source-text extraction unclear in the source text, requires confirmation against the source standard).
- Crankcase lubricating oil pressure: 172 kPa–207 kPa (25 psi–30 psi) (original 10.3.3, source-text extraction unclear in the source text, requires confirmation against the source standard).
- Ignition advance angle: the original 10.3.15 involves this; the specific parameters source-text extraction are severely unclear in the source text and require confirmation against the source standard.
- Carburetor/fuel supply conditions: the original 10.3 involves this; the specific parameters source-text extraction are severely unclear in the source text and require confirmation against the source standard.
- Compression ratio: the original 10.3 involves this; the specific parameters source-text extraction are severely unclear in the source text and require confirmation against the source standard.
- Atmospheric pressure correction: the original 12.2 involves this; the specific parameters source-text extraction are severely unclear in the source text and require confirmation against the source standard.
7. Sampling and sample preparation
- Sampling: the original 9.1 mentions sampling according to GB/T 4756 and SY/T 5317 (original 9.1, source-text extraction unclear in the source text, requires confirmation against the source standard).
- Sample storage: the original 9.2 mentions that samples should be stored at 2℃–10℃ (original 9.2, source-text extraction unclear in the source text, requires confirmation against the source standard).
- Sample preparation: the original 9.3 involves this; the specific steps source-text extraction are severely unclear in the source text and require confirmation against the source standard.
- Sample dehydration: mentioned in the original 9.3; the specific steps source-text extraction are severely unclear in the source text and require confirmation against the source standard.
8. Analysis procedure
- The original Chapter 10 is the analysis procedure; source-text extraction is severely unclear in the source text, and the specific steps require confirmation against the source standard.
- Extractable key points:
- 10.1 engine start and warm-up (original 10.1, source-text extraction unclear in the source text, requires confirmation against the source standard).
- 10.2 test condition setting (original 10.2, source-text extraction unclear in the source text, requires confirmation against the source standard).
- 10.3 test procedure (original 10.3, source-text extraction unclear in the source text, requires confirmation against the source standard).
- 10.3.1 engine start (original 10.3.1, source-text extraction unclear in the source text, requires confirmation against the source standard).
- 10.3.2 valve clearance adjustment (original 10.3.2, source-text extraction unclear in the source text, requires confirmation against the source standard).
- 10.3.3 lubricating oil pressure (original 10.3.3, source-text extraction unclear in the source text, requires confirmation against the source standard).
- 10.3.4 lubricating oil temperature (original 10.3.4, source-text extraction unclear in the source text, requires confirmation against the source standard).
- 10.3.5 coolant temperature (original 10.3.5, source-text extraction unclear in the source text, requires confirmation against the source standard).
- 10.3.6 Intake air temperature (original text 10.3.6, source-text extraction noise, requires confirmation against the source standard).
- 10.3.7 Fuel supply (original text 10.3.7, source-text extraction noise, requires confirmation against the source standard).
- 10.3.8 Ignition system (original text 10.3.8, source-text extraction noise, requires confirmation against the source standard).
- 10.3.9 Knock measurement (original text 10.3.9, source-text extraction noise, requires confirmation against the source standard).
- 10.3.10 Fuel flow rate (original text 10.3.10, source-text extraction noise, requires confirmation against the source standard).
- 10.3.11 Fuel pressure (original text 10.3.11, source-text extraction noise, requires confirmation against the source standard).
- 10.3.12 Fuel temperature (original text 10.3.12, source-text extraction noise, requires confirmation against the source standard).
- 10.3.13 Carburetor (original text 10.3.13, source-text extraction noise, requires confirmation against the source standard).
- 10.3.14 Intake system (original text 10.3.14, source-text extraction noise, requires confirmation against the source standard).
- 10.3.15 Ignition system (original text 10.3.15, source-text extraction noise, requires confirmation against the source standard).
- 10.3.16 Spark plug (original text 10.3.16, source-text extraction noise, requires confirmation against the source standard).
- 10.3.17 Knock measurement (original text 10.3.17, source-text extraction noise, requires confirmation against the source standard).
- 10.3.18 Compression ratio (original text 10.3.18, source-text extraction noise, requires confirmation against the source standard).
- 10.3.19 Fuel supply (original text 10.3.19, source-text extraction noise, requires confirmation against the source standard).
- 10.3.20 Knock meter (original text 10.3.20, source-text extraction noise, requires confirmation against the source standard).
- 10.3.21 Digital knock meter (original text 10.3.21, source-text extraction noise, requires confirmation against the source standard).
9. Qualitative and Quantitative Determination and Calculation Formulas
- Chapter 11 of the original text is result calculation, source-text extraction noise is severe, specific formulas require confirmation against the source standard.
- Extractable key points:
- 11.1 Test results (original text 11.1, source-text extraction noise, requires confirmation against the source standard).
- 11.2 Calibration of standard fuels (original text 11.2, source-text extraction noise, requires confirmation against the source standard).
- 11.3 Determination of 87.1～100.0 octane number (original text 11.3, source-text extraction noise, requires confirmation against the source standard).
- 11.4 Determination of octane number greater than 87.1 to less than 100.0 (original text 11.4, source-text extraction noise, requires confirmation against the source standard).
- 11.5 Correction of toluene calibration fuel (original text 11.5, source-text extraction noise, requires confirmation against the source standard).
- Formula (original text 17.2 formula (4)): X = (b - c)/(b - a) × (A - B) + B Where: X—— Octane number of the test sample; A—— Octane number of the high-octane-number standard fuel; B—— Octane number of the low-octane-number standard fuel; a—— Knock intensity of the high-octane-number standard fuel; b—— Knock intensity of the low-octane-number standard fuel; c—— Knock intensity of the test sample. (original text 17.2, source-text extraction noise, requires confirmation against the source standard)
- Original text 5.3 formula (1): Road O.N. = (k1 × RON) + (k2 × MON) + k3 (original text 5.3, source-text extraction noise, requires confirmation against the source standard).
- Original text 5.4 formula (2): Antiknock index = 0.5 × RON + 0.5 × MON + 0 (original text 5.4, source-text extraction noise, requires confirmation against the source standard).
- Original text 5.4 formula (3): Antiknock index = 1/2 (RON + MON) (original text 5.4, source-text extraction noise, requires confirmation against the source standard).
- Original text 18.1.1.3 formula (5): RON correction = RON digital knock meter - 0.17 (original text 18.1.1.3, source-text extraction noise, requires confirmation against the source standard).
- Original text 18.1.2.4 formula (6): RON correction = RON digital knock meter - 0.17 (original text 18.1.2.4, source-text extraction noise, requires confirmation against the source standard).
10. Precision
- Chapter 18 of the original text is precision, source-text extraction noise is severe, specific values require confirmation against the source standard.
- Extractable key points:
- 18.1 Repeatability (original text 18.1, source-text extraction noise, requires confirmation against the source standard).
- 18.1.1 Repeatability of Appendix A and Appendix C (original text 18.1.1, source-text extraction noise, requires confirmation against the source standard).
- 18.1.1.1 Repeatability r of Appendix A and Appendix C: the probability that the difference between results obtained by the same operator, same test bench, same test method, same instrument, same test sample, in repeated determinations within a short time, exceeds 7% (original text 18.1.1.1, source-text extraction noise, requires confirmation against the source standard).
- 18.1.1.2 Reproducibility R of Appendix A and Appendix C: the probability that the difference between results obtained by different operators, different test benches, different test methods, different instruments, same test sample, exceeds 7% (original text 18.1.1.2, source-text extraction noise, requires confirmation against the source standard).
- 18.1.1.3 Repeatability and reproducibility of Appendix A and Appendix C: the difference between the digital knock meter and the analog knock meter is calculated according to formula (5) (original text 18.1.1.3, source-text extraction noise, requires confirmation against the source standard).
- 18.1.2 Repeatability of Appendix B (original text 18.1.2, source-text extraction noise, requires confirmation against the source standard).
- 18.1.3 Repeatability of Appendix D (original text 18.1.3, source-text extraction noise, requires confirmation against the source standard).
- 18.2 Reproducibility (original text 18.2, source-text extraction noise, requires confirmation against the source standard).
- 18.3 Precision (original text 18.3, source-text extraction noise, requires confirmation against the source standard).
- Table 7 of the original text lists repeatability values (source-text extraction noise, requires confirmation against the source standard):
- Octane number below 90: repeatability 0.2 (a,c), 0.7 (b,c,d)
- Octane number 90～100: 0.2 (a,c), 0.7 (b,c,d)
- Octane number 101: 1.0
- Octane number 102: 1.4
- Octane number 103: 1.7
- Octane number 104: 2.0
- Octane number 104～108: 3.5
- Greater than 108: not provided in the available source
11. Report
- Chapter 19 of the original text is report, source-text extraction noise is severe, specific content requires confirmation against the source standard.
- Extractable key points:
- 19.1 The report should include test results, test conditions, test date, etc. (original text 19.1, source-text extraction noise, requires confirmation against the source standard).
- 19.2 The report should state the octane number of the test sample (original text 19.2, source-text extraction noise, requires confirmation against the source standard).
- 19.3 The report should state the test conditions (original text 19.3, source-text extraction noise, requires confirmation against the source standard).
- 19.4 The report should state the operator (original text 19.4, source-text extraction noise, requires confirmation against the source standard).
12. Normative References
- GB/T 3144 Determination of hydrocarbon components in motor gasoline by gas chromatography (original text 2 chapter, source-text extraction noise, requires confirmation against the source standard)
- GB/T 4756 Petroleum liquids — Manual sampling (GB/T 4756—1998, eqv ISO 3170:1988) (original text 2 chapter, source-text extraction noise, requires confirmation against the source standard)
- GB/T 6682—2008 Water for analytical laboratory use — Specification and test methods (ISO 3696:1987, MOD) (original text 2 chapter, source-text extraction noise, requires confirmation against the source standard)
- GB/T 8120 Determination of lead content in gasoline by atomic absorption spectrometry (original text 2 chapter, source-text extraction noise, requires confirmation against the source standard)
- GB/T 8170 Rules for rounding off numerical values and expression and judgment of limiting values (original text 2 chapter, source-text extraction noise, requires confirmation against the source standard)
- GB/T 11133 Determination of lead content in petroleum products by atomic absorption spectrometry (original text 2 chapter, source-text extraction noise, requires confirmation against the source standard)
- SH/T 0176 Determination of sulfur content in gasoline by lamp combustion method (original text 2 chapter, source-text extraction noise, requires confirmation against the source standard)
- SH/T 0521 Determination of distillation range of petroleum products by laboratory atmospheric distillation (original text 2 chapter, source-text extraction noise, requires confirmation against the source standard)
- SY/T 5317 Petroleum liquids — Automatic pipeline sampling (SY/T 5317—2006, ISO 3171:1988, IDT) (original text 2 chapter, source-text extraction noise, requires confirmation against the source standard)
13. Source and verification
This page is an AI translation of the available Chinese method card. Human verification is pending. It is not an official translation of the standard. Check the source standard and product certificate before use.
14. Quick Reference Q&A
| Question | Key Answer Points |
|---|---|
| What is the standard number? | GB/T 5487—2015 |
| What is the Chinese name of the standard? | Determination of octane number of gasoline — Research method |
| What is the English name of the standard? | Determination of the gasoline octane number—Test method for research octane number |
| Which standard does it replace? | Replaces GB/T 5487—1995 |
| What are the previous versions? | GB/T 5487—1985, GB/T 5487—1995 |
| What object is it applicable to? | Determination of research octane number of spark-ignition engine fuel (gasoline) (original text 1 chapter, source-text extraction noise, requires confirmation against the source standard) |
| What is the octane number range? | Note to Chapter 1 of the original text: applicable to 0～120, specified research octane number range 40～120; 88～101 can be corrected using toluene calibration fuel (source-text extraction noise, requires confirmation against the source standard) |
| What is the method principle? | A centralized, complete "principle" chapter is not provided in the available source; 3.1.20 definition: use a CFR engine, under specified conditions (600 r/min±6 r/min), compare with reference fuels, and determine the antiknock rating value by knock intensity (source-text extraction noise, requires confirmation against the source standard) |
| What is the engine speed? | 600 r/min±6 r/min (original text 3.1.20, 10.2.1, source-text extraction noise, requires confirmation against the source standard) |
| What is the coolant temperature? | 100℃±1.5℃ (212℉±3℉) (original text 10.3.5, source-text extraction noise, requires confirmation against the source standard) |
| What is the intake air temperature? | 52℃±1℃ (125℉±2℉) (original text 10.3.6, source-text extraction noise, requires confirmation against the source standard) |
| What is the crankcase lubricating oil temperature? | 57℃±8℃ (135℉±15℉) (original text 10.3.4, source-text extraction noise, requires confirmation against the source standard) |
| What is the crankcase lubricating oil pressure? | 172 kPa～207 kPa (25 psi～30 psi) (original text 10.3.3, source-text extraction noise, requires confirmation against the source standard) |
| What is the valve clearance? | Intake valve 0.20 mm±0.025 mm (0.008 in±0.001 in) (original text 10.3.2, source-text extraction noise, requires confirmation against the source standard) |
| What is the spark plug gap? | 0.51 mm±0.13 mm (0.020 in±0.005 in) (original text 10.3.16, source-text extraction noise, requires confirmation against the source standard) |
| What is the cylinder diameter? | 82.55 mm (3.250 in) (original table 1, source-text extraction noise, requires confirmation against the source standard) |
| What is the stroke? | 114.30 mm (4.50 in) (original table 1, source-text extraction noise, requires confirmation against the source standard) |
| What is the displacement? | 0.61 L (37.33 in³) (original table 1, source-text extraction noise, requires confirmation against the source standard) |
| What is the compression ratio range? | 4:1～18:1 (original table 1, source-text extraction noise, requires confirmation against the source standard) |
| What is the toluene purity requirement? | ≥99.75% (mass fraction), n-heptane ≤0.10% (mass fraction), sulfur ≤0.5 mg/L (original text 8.3.1, source-text extraction noise, requires confirmation against the source standard) |
| What is the n-heptane purity requirement? | ≥99.75% (mass fraction), toluene ≤0.10% (mass fraction), sulfur ≤0.5 mg/L (original text 8.3.2, source-text extraction noise, requires confirmation against the source standard) |
| How is 80 octane number reference fuel prepared? | Toluene content 80% (mass fraction) ±0.1% (mass fraction) (original text 8.3.3, source-text extraction noise, requires confirmation against the source standard) |
| What is the composition of the toluene calibration fuel? | 70% (mass fraction) toluene + 30% (mass fraction) n-heptane (original text 8.4.1, source-text extraction noise, requires confirmation against the source standard) |
| What is the density of the toluene calibration fuel? | At 15.6/15.6℃, 0.957～0.967 (original text 8.4.2, source-text extraction noise, requires confirmation against the source standard) |
| What standard is sampling according to? | GB/T 4756 and SY/T 5317 (original text 9.1, source-text extraction noise, requires confirmation against the source standard) |
| What is the sample storage temperature? | 2℃～10℃ (original text 9.2, source-text extraction noise, requires confirmation against the source standard) |
| What is the octane number calculation formula? | X = (b - c)/(b - a) × (A - B) + B (original text 17.2 formula (4), source-text extraction noise, requires confirmation against the source standard) |
| What is the antiknock index formula? | Antiknock index = 0.5 × RON + 0.5 × MON + 0 (original text 5.4 formula (2)); antiknock index = 1/2 (RON + MON) (original text 5.4 formula (3)) (source-text extraction noise, requires confirmation against the source standard) |
| What is the repeatability value? | Original table 7: below 90, 0.2 (a,c), 0.7 (b,c,d); 90～100 0.2 (a,c), 0.7 (b,c,d); 101 1.0; 102 1.4; 103 1.7; 104 2.0; 104～108 3.5; greater than 108 not provided in the available source (source-text extraction noise, requires confirmation against the source standard) |
| What is the reproducibility value? | Involved in Chapter 18 of the original text; specific values source-text extraction noise is severe, requires confirmation against the source standard |
| What should the report include? | Involved in Chapter 19 of the original text; specific content source-text extraction noise is severe, requires confirmation against the source standard |
| What are the referenced documents? | GB/T 3144, GB/T 4756, GB/T 6682—2008, GB/T 8120, GB/T 8170, GB/T 11133, SH/T 0176, SH/T 0521, SY/T 5317 (original text Chapter 2, source-text extraction noise, requires confirmation against the source standard) |
| What appendices are there? | Appendix A (normative appendix), Appendix B (normative appendix), Appendix C (normative appendix), Appendix D (normative appendix), Appendix E (informative appendix), Appendix F (informative appendix), Appendix G (informative appendix), Appendix H (informative appendix) (original table of contents, source-text extraction noise, requires confirmation against the source standard) |
| What is Appendix A? | Normative appendix (original table of contents, source-text extraction noise, requires confirmation against the source standard) |
| What is Appendix B? | Normative appendix (original table of contents, source-text extraction noise, requires confirmation against the source standard) |
| What is Appendix C? | Normative appendix (original table of contents, source-text extraction noise, requires confirmation against the source standard) |
| What is Appendix D? | Normative appendix (original table of contents, source-text extraction noise, requires confirmation against the source standard) |
| What is Appendix E? | Informative appendix (original table of contents, source-text extraction noise, requires confirmation against the source standard) |
| What is Appendix F? | Informative appendix (original table of contents, source-text extraction noise, requires confirmation against the source standard) |
| What is Appendix G? | Informative appendix (original table of contents, source-text extraction noise, requires confirmation against the source standard) |
| What is Appendix H? | Informative appendix (original table of contents, source-text extraction noise, requires confirmation against the source standard) |
| What is the standard publication date? | 2015-12-31 (original cover, source-text extraction noise, requires confirmation against the source standard) |
| What is the standard implementation date? | 2016-06-01 (original cover, source-text extraction noise, requires confirmation against the source standard) |
| What is the Chinese standard classification number? | E30 (original cover, source-text extraction noise, requires confirmation against the source standard) |
| What is the International Classification for Standards number? | ICS 75.160.20 (original cover, source-text extraction noise, requires confirmation against the source standard) |
| What is the administering body? | National Technical Committee for Standardization of Petroleum Products and Lubricants (SAC/TC280) (original foreword, source-text extraction noise, requires confirmation against the source standard) |
| What are the drafting organizations? | Listed in the original foreword: 67, 289, :;;, <=>, <?@, AB7 (source-text extraction noise, requires confirmation against the source standard) |
| Who are the main drafters? | Listed in the original foreword: 67, 289, :;;, <=>, <?@, AB7 (source-text extraction noise, requires confirmation against the source standard) |
| What are the main changes in this standard compared with the 1995 edition? | The original foreword lists multiple changes, including: modified the "Scope" clause (octane number range 40～120); modified "Terms and Definitions"; added "Method Summary"; modified "Apparatus and Equipment"; modified "Sampling and Sample Preparation"; modified "Analysis Procedure"; modified "Calculation of Results"; modified "Precision"; modified "Report"; added "Appendix A"; added "Appendix B"; added "Appendix C"; added "Appendix D"; added "Appendix E"; added "Appendix F"; added "Appendix G"; added "Appendix H" (original foreword, source-text extraction noise, requires confirmation against the source standard) |
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