Page 179 - The Central Motor Vehicles Rules, 1989
P. 179
RULE 115 THE CENTRAL MOTOR VEHICLES RULES, 1989 151
1
[TABLE-A
(PETROL/COMPRESSED NATURAL GAS/LIQUEFIED PETROLEUM GAS DRIVEN
VEHICLES MANUFACTURED AS PER [BHARAT STAGE-IV OR BHARAT STAGE-VI]
NORMS)
Sl. Type of vehicle Idle emission High idle emission limits
No. limits
CO% HC CO% Lambda l
(n hexane
equivalent)
ppm
(1) (2) (3) (4) (5) (6)
1. Compressed Natural Gas/ Liquefied 0.3 200 – 1 + 0.03 or as
Petroleum Gas driven four wheelers declared by the
manufactured as per Bharat Stage-IV or vehicle
Bharat Stage VI norms manufacturer]
2. Petrol driven four wheelers manufactured 0.3 200 0.2
as per Bharat Stage-IV or Bharat Stage VI
norms
3. Compressed Natural Gas/Liquefied 0.5 500 —
Petroleum Gas driven two/three wheelers
manufactured as per Bharat Stage VI norms
4. Petrol driven two/three wheelers 0.5 500 0.3
manufactured as per Bharat Stage VI norms
Note : The test shall be carried out using the instrument type approved as per rule
116(3) of the Central Motor Vehicles Rules, 1989 (CMVR) with the vehicle engine
warmed up after a run of minimum 15 minutes on a variable course under normal traffic
condition. During the test the vehicle engine shall be running at idling speed and the
sampling probe shall be inserted into the vehicle exhaust system to a depth not less than
300mm. In case CO and/or HC emission values recorded during the test are not within
the limits, the testing shall be discontinued and the vehicle owner shall be advised to
resubmit the vehicle after repair/service.
* The idling emission standards for vehicles when operating on Compressed
Natural Gas (CNG), shall contain Non-Methane Hydro Carbon (NMHC) in
place of Hydrocarbon (HC) and shall be estimated by the following formula:
NMHC = 0.3 x HC
Where HC = Total hydrocarbon measured as n-hexane equivalent
Similarly idling emission standards for vehicles when operating on
Liquefied Petroleum GAS (LPG) shall contain Reactive Hydro Carbon
(RHC) in place of Hydrocarbon (HC) and shall be estimated by the
following formula:
RHC = 0.5 x HC
Where HC = Total Hydrocarbon measured as n-hexane equivalent:
PROVIDED that in case of Petrol vehicles fitted with three way closed loop catalytic
converters operating in a specific city or area, the Government of the respective State or
1 Substituted vide GSR 881(E), dt. 26-11-2019, w.e.f. 26-11-2019.