Bharat stage emission standards:
- What are they? These are emission standards instituted by the Government of India based on European regulations.
- Objective: To regulate the output of air pollutants from internal combustion engine equipment. The higher the fuel standard a vehicle complies with, the less polluting it is.
- Who sets them? The standards and the timeline for implementation are set by the Central Pollution Control Board under the Ministry of Environment & Forests and Climate Change.
Difference Between BS-IV AND BS-VI?
- Sulphur content: The main difference is in the amount of sulphur in the fuel which is reduced from 50 ppm in BS IV fuel to 10 ppm in BS VI fuel for both gasoline and diesel.
- NOx emissions:
- BS VI norms will address one of the inherent flaws in the European emission standards which permits diesel cars to emit more particulate matter and nitrogen oxide.
- NOx emissions from diesel cars are expected to come down by nearly 70% and, from cars with petrol engines, by 25%.
