Page 229 - The Central Motor Vehicles Rules, 1989

RULE 115 THE CENTRAL MOTOR VEHICLES RULES, 1989 201

(5) The Conformity of Production (COP) testing procedure shall be as described in
AIS:137, as amended from time to time.
(6) The Conformity of Production (COP) frequency and samples shall be as under:—
(i) The Conformity of Production period for each engine model including its
variant(s) shall be once a year.
(ii) Where production volume in six months is less than 250 per model including
its variant, the provisions contained in the provisos to rule 126-A shall apply.
(7) Specifications for Commercial fuels shall be as under:—
a. The Commercial Gasoline fuel shall be as per Annexure IV-U and as amended
from time to time.
b. Specification for Commercial CNG and Commercial LPG shall be in
accordance with BIS 15958:2012 and as per BIS 14861:2000 respectively and as
amended from time to time.
c. Biodiesel used in Commercial Diesel shall be as per IS 15607, as amended from
time to time.
d. Specification for Commercial Diesel fuel up to 7% of bio diesel blend shall be
as per Annexure IV-V and as amended from time to time.
e. Specifications for commercial E85 and ED95 shall be as specified in accordance
with the Indian Standards as amended from time to time.
f. Specification for commercial Biogas (Bio-methane) shall be as per IS 16087:2013
and as amended time to time.
g. Specifications for commercial Hydrogen Enriched Compressed Natural Gas
(HCNG) shall be as per IS 17314:2019 and as amended from time to time.
(8) For CI engine vehicles, the emission of visible pollutants (smoke) shall not exceed
the limit value of smoke density, as per Annexure I to sub-rule (9) of rule 115. 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.
(9) The engine power shall be measured on engine dynamometer and the measured
power shall conform to the power specified and tested as per procedures
prescribed in AIS:137 as amended time to time.
(10) Idle emissions and Smoke Density shall be as under:—
a. The vehicles equipped with PI engine specified in this sub- rule shall comply
with the provisions of clause (i) of sub-rule (2) of rule 115.
b. The vehicles equipped with CI engine specified in this sub- rule shall comply
with the provisions of clause (ii) of sub-rule (2) of rule 115.
(11) Deterioration Factors—
(i) Deterioration factors shall be as given in the Table below:—
Table 1
Deterioration Factors for BS-VI
Test cycle CO THC 1 NMHC 2 CH4 2 NOx NH3 PM PM
mass number
(1) (2) (3) (4) (5) (6) (7) (8) (9)
WHTC 1.3 1.3 1.4 1.4 1.15 1.0 1.05 1.0
WHSC 1.3 1.3 — — 1.15 1.0 1.05 1.0
(1)
Applies in case of a compression ignition engine.