Page 210 - The Central Motor Vehicles Rules, 1989

182 THE CENTRAL MOTOR VEHICLES RULES, 1989 RULE 115

(B) For Diesel engines, CNG engines or LPG engines
Engine Transient Cycle (ETC) test
CO NMHC (1) CH4(2) NOx (g/kWh) PM(3)
(g/kWh) (g/kWh) (g/kWh) (g/kWh)
4.0 0.55 1.1 3.5 0.03
(1) A manufacturer may choose to measure the mass of total hydrocarbons (THC) instead
of measuring the mass of non-methane hydrocarbon (NMHC). In this case, the limit
for mass of THC should be same as for the NMHC.
(2) For CNG engines only
(3) For Diesel engines only
Notes
1. The test shall be done on engine dynamometer.
2. There shall be no relaxation of norms for Conformity of Production (COP)
purposes.
3. In case of vehicles operating on diesel fuelled engines, the gaseous and
particulate emissions shall be as per Engine Steady State Cycle (ESC) and
Engine Transient Cycle (ETC) and smoke test shall be as per Engine Load
Response (ELR) as specified in MoSRTH/CMVR/TAP-115/116 and as
amended from time to time.
4. In case of vehicles operating on CNG or LPG fuelled engines, the gaseous
emissions are to be determined only on the Engine Transient Cycle (ETC)
test as specified in MoSRTH/CMVR/TAP-115/116, as amended from time
to time.
5. The smoke opacity is to be determined on the Engine Load Response (ELR)
test as specified in Part XII of MoSRTH/CMVR/TAP-115/116, as amended
from time to time.
6. In case of vehicles operating on CNG or LPG mode, the provisions of rules
115B and 115C shall be applicable respectively.
7. The reference fuel shall be as specified in Annexure IV K for Diesel vehicles,
Annexure IV L for CNG (G20, G23 and G25) vehicles and Annexure IV M
for LPG (Fuel A and Fuel B) vehicles respectively. Reference Fuel as per
Annexure IV L and IV M shall be used for Type Approval and Conformity
of Production, one year after the same is available to the test agencies. Till
then, Commercial CNG/LPG fuel shall be used.
8. The Conformity of Production (COP) testing procedure shall be as specified
in MoSRTH/CMVR/TAP-115/116, as amended from time to time.
9. The Conformity of Production (COP) frequency and samples:
(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 variants, the provisions contained in the provisos to rule
126A shall apply.