Page 634 - The Central Motor Vehicles Rules, 1989

606 THE CENTRAL MOTOR VEHICLE RULES, 1989 ANNEXURE IV-H

ANNEXURE IV-H
[Refer rule 115(14)] ANNEXURE IV-H
LIQUIFIED PETROLEUM GAS (LPG)

Parameter Unit Limits Fuel A Limits Fuel B Test method

Mini- Maxi- Mini- Maxi-
mum mum mum mum

Motor Octane Number 93.5 93.5 EN 589
Annex B

Composition:
C3 content % vol. 48 52 83 87 ISO 7941

C4 content % vol. 48 52 13 17 ISO 7941

Olefins % vol. 0 12 9 15 ISO 7941
Evaporation residue mg/kg 50 50 NFM
41-015
Total sulphur content ppm 50 50 EN 24260
weight (1)

Hydrogen sulphide — None None ISO 8819
(2)
Copper strip corrosion Rating Class I Class I ISO 6251
Water at 0˚C Free Free Visual
inspection

(1)
Value to be determined at standard conditions 293, 2K (20˚C) and 101, 3 kPa.
(2)
This method may not accurately determine the presence of corrosive materials if the
sample contains corrosion inhibitors or other chemicals, which diminish the corrosivity of
the sample to the copper strip. Therefore, the addition of such compounds for the sole
purpose of biasing the test method is prohibited.

Note : Fuel A and Fuel B are two types of LPG fuels used for testing of
vehicles/engines, to take care of the variation in commercial LPG fuel.