Page 656 - The Central Motor Vehicles Rules, 1989

628 THE CENTRAL MOTOR VEHICLE RULES, 1989 ANNEXURE IV-Y
1
[ANNEXURE IV-Y
[Refer rule 115H] ANNEXURE IV-Y
TECHNICAL SPECIFICATIONS OF THE REFERENCE FUEL M15*
Parameter Unit Limits 1 Test method2

Minimum Maximum
Research octane number, 91.0 - EN ISO 5164
RON
Motor octane number, MON 81.0 - EN ISO 5163
3
Density at 15˚C kg/m Report ISO 3675
Vapour pressure kPa - 60.0 EN ISO 13016-1 (DVPE)
Sulphur content 3,4 mg/kg - 50 EN ISO 20846
EN ISO 20884
Oxidation stability minutes 360 EN ISO 7536
Existent gum content mg/(100 ml) - 5 EN-ISO 6246
(solvent washed)
Appearance Clear and bright, visibly free Visual inspection
This shall be determined at of suspended or precipitated
ambient temperature or contaminants
15˚C whichever is higher.
Methanol % V/V - 15 EN 1601
EN 13132
EN 14517
Vapour Lock Index 750 950
Distillation residue % V/V 2
Phosphorus mg/l 0.3 6 ASTM D 3231
Water content 5 % V/V 0.1 ASTM E 1064
Other oxygenates % (m/m) 10
Density at 15˚C (kg/m3) 720 775 ASTM D 6423
Copper strip corrosion Rating Class 1 EN ISO 2160
(3h at 50˚C)
Acidity, (as acetic acid % m/m - 0.005 ASTM D 1613
CH3COOH) (mg/l) (40)
Carbon/hydrogen or report
carbon/oxygen ratio
Additive % (V/V) 2

*(To be replaced by BIS Specifications when published)

1 Inserted vide GSR 490(E), dt. 24-5-2018, w.e.f. 25-5-2018.