Page 242 - The Central Motor Vehicles Rules, 1989

214 THE CENTRAL MOTOR VEHICLES RULES, 1989 RULE 115

Smoke No No No No No No No No Yes No No
Opacity (B7
only)
(1)
Vehicles fuelled with bio diesel blends up to 7% shall be tested with reference diesel (B7)
and vehicles fuelled with Bio diesel blends above 7% will be tested with respective blends.
(2)
In case of PI engines, applicable only to vehicles with direct Injection engines.
(3)
Vehicles models and variants having option for Bi-fuel operation and fitted with limp-
home gasoline tank of capacity not exceeding three litres on three wheelers shall be exempted
from test in gasoline mode.
(4)
CO2 emission and fuel consumption shall be measured as per procedure laid down in AIS
137 and as amended time to time.
When bi-fuel vehicle is combined with a flex fuel vehicle, both test requirements are
applicable. Vehicle tested with E100 need not to be tested with E85.
Notes :
1. The test shall be on Chassis Dynamometer.
2. The test including driving cycle shall be as provided in CMV sub-rule (12) with
the modifications that
(i) The exhaust gas sampling should start at the initiation in case of gasoline
and diesel three wheeler as per the engine start up procedure referred to in
Annexure II.
3. The provision of clauses (a), (c), (d), (e) and (f) of sub-rule (12) of rule115, except
the proviso therein at the end of this sub rule, shall be applicable to the said vehicles.
4. Specifications of Reference Fuels:
1
[(a) (i) The Reference Gasoline fuel (E5) or (E10), as as specified by the
manufacturer, shall be as specified in Annexure IV-X or Annexure IV-XA,
respectively.
(ii) The reference ethanol fuel (E85) shall be as per the Annexure IV-Q.]
(b) The Reference Diesel fuel (B7) shall be as specified in Annexure IV-T.
(c) Reference natural gas fuel used in Natural Gas or Bio-Methane mono-fuel
or bi-fuel vehicles shall be as per Annexure IV-L (G20, G23 and G25).
(d) Reference LPG fuel used in LPG mono-fuel or bi-fuel vehicles shall be as
per Annexure IV-M (Fuel A and Fuel B), however, in case of non-availability
of reference fuels for CNG/LPG, the commercially available CNG as per
BIS 15958:2000 and LPG as per BIS 14861:2012 as amended from time to time
shall be used for the purpose of Type Approval and Conformity of
Production.
(e) Reference fuel Biogas (Bio-methane) shall be as per IS 16087:2013 and as
amended time to time.
2
[(f) The reference fuel Hydrogen Enriched Compressed Natural Gas (HCNG)
shall be as per IS 17314:2019 and as amended from time to time.]
3
[(g) The reference ethanol fuel (E100) shall be as specified in Annexure IV-SA.
(h) The reference ethanol fuel (E20) shall be as per IS 17021:2018.]
5. Specifications of Commercial Fuels shall be as under:—
(i) The Commercial Gasoline fuel shall be as per Annexure IV-U.

1 Substituted vide GSR 728(E), dt. 11-10-2021, w.e.f. 12-10-2021.
2 Inserted vide GSR 585(E), dt. 25-9-2020, w.e.f. 25-9-2020.
3 Inserted vide GSR 156(E), dt. 8-3-2021, w.e.f. 8-3-2021.