The Union Ministry of Petroleum and Natural Gas (MoPNG) has announced a 2-year advancement of the introduction of Bharat Stage (BS)-VI fuel norms from April 1, 2018 in Delhi, currently suffering from its worst smog crisis in years.
Bharat Stage emission standards, introduced in 2000, are emission standards that have been set up the Central government to regulate the output of air pollutants from internal combustion engine equipment, including motor vehicles. The different norms are brought into force in accordance with the timeline and standards set up by the Central Pollution Control Board which comes under the Ministry of Environment and Forests and Climate Change.
The Bharat Stage norms are based on European regulations. In 13 major cities,
Bharat Stage IV emission standards were put in place in April 2010.
BS-IV norms were supposed to come into effect nationwide from April 2017.
Difference in BS-IV and BS-VI standardsThe BS norms have been similar to Euro norms till now, and with norms after BS-IV not defined yet, we compare the existing BS-III and BS-IV norms in India with the Euro 6 norms on which India's emission norms have been set.
Petrol Emission Norms (All figures in g/km)| Emission Norm | CO | HC | NOx | HC+NOx | PM |
|---|
| BS-III | 2.30 | 0.20 | 0.15 | | |
| BS-IV | 1.00 | 0.10 | 0.08 | | |
| Euro 6 | 1.00 | 0.10 | 0.06 | | 0.005 |
Diesel Emission Norms (All figures in g/km)| Emission Norm | CO | HC | NOx | HC+NOx | PM |
|---|
| BS-III | 0.64 | - | 0.50 | 0.56 | 0.05 |
| BS-IV | 0.50 | - | 0.25 | 0.30 | 0.025 |
| Euro 6 | 0.50 | - | 0.06 | 0.17 | 0.005 |
Source - Indian Emissions Regulations/ARAI
