Page 189 - The Central Motor Vehicles Rules, 1989

RULE 115 THE CENTRAL MOTOR VEHICLES RULES, 1989 161

Engine Dynamometer Test
Limit Values for Type Approval (TA) as well as (COP)
CO (g/kWh) HC (g/kWh) NOx (g/kWh) PM (g/kWh)
4.0 1.1 7.0 0.15

Or Chassis Dynamometer Test

Class Ref. Mass (RM) Kg Mass of CO (g/km) Mass HC+NOx Mass of
(g/km) PM g/km
RM Gasoline Diesel Gasoline Diesel
I RM £ 1250 2.2 1.0 0.5 0.7 0.08

II 1250 < RM £ 1700 4.0 1.25 0.6 1.0 0.12
III 1700 < RM 5.0 1.5 0.7 1.2 0.17

Notes :
1. (a) There shall be no relaxation for COP purposes.
(b) The tests shall be carried out on the engine dynamometer operation as
specified in Annexure IV-A of the rules. The tests on chassis dynamometer
shall be as per the driving cycle given in Note of clause (B) of sub-rule (11)
of rule 115.
(c) The reference fuel shall be of a maximum of 0.05% maximum mass sulphur
content.
2. Commercial fuel for meeting above norms shall be up to 0.05% maximum mass
sulphur content.
3. For Diesel engined vehicles the emission of visible pollutants (smoke) shall not
exceed the limit value to smoke density, when expressed as light absorption coefficient
for various nominal flows as in Annexure-I to sub-rule (9) of rule 115 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.
4. For Diesel engined vehicles, the free acceleration smoke for naturally aspirated
and turbo-charged engines shall not exceed the smoke density limit value as in clause
(c) of sub-rule (2) of rule 115.
5. There shall be no crankcase emissions for Petrol engined vehicles.
6. Evaporative emission shall not be more than 2.0g/test from Petrol engined vehicles.
(D) Vehicles with GVW exceeding 3500 kg shall conform the following forms:—
Limit Values for Type Approval (TA) as well as (COP)
CO (g/kWh) HC (g/kWh) NOx (g/kWh) PM (g/kWh)

4.0 1.1 7.0 0.15
Notes :
1.(a) There shall be no relaxation for COP purposes.