Page 187 - The Central Motor Vehicles Rules, 1989

RULE 115 THE CENTRAL MOTOR VEHICLES RULES, 1989 159

PM (g/kWh) for engines with power 0.36 0.4
exceeding 85kW

PM (g/kWh) for engines with power equal 0.61 0.68
to or less that 85 kW
Or Chassis Dynamometer Test

Reference Mass Limits for Type Approval gm/km Limits for conformity of production
(kg) of gm/km
CO HC+NOx PM CO HC+NOx PM
R £ 1250 2.72 0.97 0.14 3.16 1.13 0.18
1250 £ R£ 1700 5.17 1.40 0.19 6.0 1.60 0.22
1700 £ R 6.90 1.70 0.25 8.0 2.0 0.29

Notes : The test for vehicles with GVW equal to or less than 3.5 ton shall be as per
the 13 mode cycle on engine dynamometer specified in Annexure-IV A to the principal
rules.
The test shall be as per the Indian Driving Cycle, for 2 Wheelers and 3 Wheelers
and modified Indian Driving Cycle for 4 Wheelers with cold start, as specified in
Annexure-IV B on Chassis Dynamometer.
For vehicles fitted with catalytic converters a deterioration factor 1.1 of CO; 1.0 for
HC+NOx and 1.2 for PM on type approval limits will be applicable for durability.
The emission of visible pollutants (smoke) shall not exceed the limit value to smoke
density, when expressed as light absorption co-efficient for various nominal flows as in
Annexure I to rule 115(9) (Notification No. GSR 163(E), dt. 29-3-1996), when tested at
constant speeds over full load. These smoke limits are without correction factor and
engines are to be tested with conditioned air supplied to the engine to maintain
atmospheric factor of 0.98 to 1.02.
Commercial fuel shall be as notified by Ministry of Environment and Forests vide
Notification No. G.S.R. 176(E), dt. 2nd April, 1996.
Reference test fuel shall be as specified in Annexure IVD]
1
[For 2-wheelers and 3-wheelers fitted with catalytic converter, the deterioration
factor shall be as follows:
CO = 1.1;
HC + NOx = 1.0;
P.M. = 1.2 :
PROVIDED that the vehicle manufacturers may opt for an ageing test
of 30,000 kms for evaluating deterioration factor, as per procedure that
may be laid down by the Central Government:
PROVIDED FURTHER that the above provisions shall come into force
after six months from the publication of the notification.]
2
[(11) Mass emission standards (Bharat Stage-II);]

1 Inserted vide GSR 400(E), dt. 31-5-2002.
2 Inserted vide GSR 77(E), dt. 31.1.2000, w.e.f. 1-4-2000.