Page 636 - The Central Motor Vehicles Rules, 1989

608 THE CENTRAL MOTOR VEHICLE RULES, 1989 ANNEXURE IV-K

–aromatics % v/v 29.0 35.0 ASTM D 1319
–benzene % v/v — 1.0 ASTM D 1319

–saturates % v/v Report Report Pr. EN 12177
–Carbon/Hydrogen ratio Report ASTM D 1319
(2)
Induction period minutes 480 — EN-ISO 7536
Oxygen content % m/m — 1.0 EN 1601
Existent gum mg/ml — 0.04 EN-ISO 6246
(3)
Sulphur content mg/kg — 10 ASTM D 5453
Copper corrosion — Class 1 EN-ISO 2160
Lead content mg/l — 5 EN 237

Phosphorus content mg/l — 1.3 ASTM D 3231
(1)
The values quoted in the specifications are “true values”. In establishment of their limit
values the terms of ISO 4259 Petroleum products—Determination and application of
precision data in relation to methods of test have been applied and in fixing a minimum
value, a minimum difference of 2R above zero has been taken into account; in fixing a
maximum and minimum value, the minimum difference is 4R (R=reproducibility).
Notwithstanding this measure, which is necessary for technical reasons, the manufacturer
of fuels should nevertheless aim at a zero value where the stipulated maximum value is 2R
and at the mean value in the case of quotations of maximum and minimum limits. Should
it be necessary to clarify the questions as to whether a fuel meets the requirements of the
specifications, the terms of ISO 4259 should be applied.
(2)
The fuel may contain oxidation inhibitors and metal deactivators normally used to
stabilize refinery gasoline streams, but detergent/dispersive additives and solvent oils must
not be added.
(3)
The actual sulphur content of the fuel used for the Type I test shall be reported.
ANNEXURE IV-K
[Refer Rule 115(15)] ANNEXURE IV-K
TECHNICAL SPECIFICATION OF THE REFERENCE FUEL TO BE USED FOR
TESTING VEHICLES EQUIPPED WITH DIESEL ENGINES

Parameter Unit Limits (1) Test Method
Minimum Maximum
(2)
Cetane number 52.0 54.0 EN-ISO 5165
Density at 15˚C kg/m 3 833 837 EN-ISO 3675
Distillation :
–50% point ˚C 245 — EN-ISO 3405
–95% point ˚C 345 350 EN-ISO 3405
–final boiling point ˚C — 370 EN-ISO 3405