Page 632 - The Central Motor Vehicles Rules, 1989

604 THE CENTRAL MOTOR VEHICLE RULES, 1989 ANNEXURE IV-G

ANNEXURE IV-G
[Refer rule 115(14)] ANNEXURE IV-G
TECHNICAL CHARACTERISTICS OF REFERENCE FUEL PRESCRIBED FOR
APPROVAL TESTS AND TO VERIFY CONFORMITY OF PRODUCTION
Type : Unleaded petrol

(1)
Parameter Unit Limits Test method
Minimum Maximum
Research Octane number, RON 95.0 — EN 25164
Motor octane number, MON 85.0 — EN 25163
3
Density at 15˚C kg/m 748 762 ISO 3675
Reid vapour pressure kPa 56.0 60.0 EN 12
Distillation
— initial boiling point ˚C 24 40 EN-ISO 3405
— evaporated at 100˚C % v/v 49.0 57.0 EN-ISO 3405
— evaporated at 150˚C % v/v 81.0 87.0 EN-ISO 3405

— final boiling point ˚C 190 215 EN-ISO 3405
Residue % volume — 2 EN-ISO 3405
Hydrocarbon analysis
— olefins % v/v — 10 ASTM D 1319
— aromatics % v/v 28.0 40.0 ASTM D 1319
— benzene % v/v — 1.0 Pr. EN 12177
— saturates % v/v — balance ASTM D 1319
Carbon/hydrogen ratio Report Report
(2)
Oxidation Stability minutes 480 — EN-ISO 7536
Oxygen content % m/m — 2.3 EN 1601
Existent gum mg/ml — 0.04 EN-ISO 6246
(3)
Sulphur content mg/kg — 100 Pr. EN
ISO/DIS 14596
Copper corrosion for 3 hours at — 1 EN-ISO 2160
50˚C
Lead content mg/1 — 5 EN 237
Phosphorous content mg/l — 1.3 ASTM D 3231