Know the Exhaust Emission Standards
The pollution standards for in use vehicles have been prescribed under Rule 115(2) of Central Motor vehicles Rules, 1989.
They are : (I) PETROL/CNG/LPG VEHICLES:
| S.No | Vehicle Type | CO % | HC (n-hexane equivalent) ppm |
|---|---|---|---|
| 1 | 2&3-Wheelers (2/4-stroke) (Vehicles manufactured on and before 31/3/2000) | 4.5 | 9000 |
| 2 | 2&3-Wheelers (2-stroke) (Vehicles manufactured after 31/3/2000) | 3.5 | 6000 |
| 3 | 2&3-Wheelers (4-stroke) (Vehicles manufactured after 31/3/2000) | 3.5 | 4500 |
| 4 | 4- wheelers manufactured as per pre Bharat Stage II norms | 3.0 | 1500 |
| 5 | 4- wheelers manufactured as per Bharat Stage- II, Bharat Stage III | 0.5 | 750 |
(Petrol/Compressed Natural Gas/liquefied Petroleum Gas driven vehicles, manufactured
| S.No. | Vehicle Type | Idle Emission Limit | High Idle Emission Limited | ||
|---|---|---|---|---|---|
| (1) | (2) | (3) | (4) | ||
| CO% | HC(n Hexane Equivalent ppm) | CO% | Lambda(RPM-2500±200) | - | |
| 1. | Compressed Natural Gas/Liquefied Petroleum Gas driven 4 wheelers manufactured as per Bharat Stage IV norms. | 0.3% | 200ppm | - | - |
| 2. | Petrol driven 4-wheelers manufactured as per Bharat Stage IV norms. | 0.3% | 200ppm | 0.2 | 1+ 0.03 or as declared by the vehicle manufacturer. |
(II) For Diesel Vehicles
| S.No. | Method Of Test | Maximum Smoke Density | ||
|---|---|---|---|---|
| (1) | (2) | (3) | ||
| Light absorption coefficient (1/metre) | Hartidge Units | |||
| 1. | Free acceleration test for turbo charged engine and naturally aspirated engine for vehicles manufactured as per pre-Bharat Stage IV norms. | 2.45 | 65 | |
| 2. | Free acceleration test for turbo charged engine and naturally aspirated engine for vehicles manufactured as per Bharat Stage IV norms. | 1.62 | 50" | |
Last Update Date :- 08-06-2018
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Page last updated on: 24-02-2021
