ALSO READBS-VI: Delhi to get clean fuel two years early Beware Delhi! Prepare for smog again, stubble burning has begun Stubble burning: This formula could have saved Delhi its smog menace Delhi chokes as air pollution worsens, Twitter users slam govt over inaction Delhi smog: NGT bans construction, industrial work and top 10 developments
Private four-wheelers add to 10 per cent of the total vehicular pollution.
Illegal crop burning in the neighbouring states coupled with vehicular and industrial emissions has caused a sharp deterioration in the air quality in Delhi beginning earlier this month along with the onset of winter.
Early migration to BS-VI fuels in the National Capital of Delhi will help in saving thousands of precious lives by bringing down vehicular pollution significantly. pic.twitter.com/7r2lCCYeUP— Dharmendra Pradhan (@dpradhanbjp) November 15, 2017
- The existing BS-IV fuel has 50 parts per million (ppm) sulphur while the upcoming BS-VI will contain a low 10 ppm. Due to the chemical lubrication properties of sulphur, the injectors in a diesel engine emit low particulate matter into the atmosphere.
- Emission from diesel cars and nitrogen oxide levels are expected to get substantially lower than it did with BS-IV.
- According to a report by Firstport, only German luxury vehicles and Bharat-Benz trucks are equipped to switch to BS-VI fuel.
- BS-VI fuel can only function efficiently on BS-VI engines. If one allows this fuel to run on BS-IV engines, the point of curbing vehicular pollution may turn ineffective, in addition to ruining the engine.
- Similarly, BS-VI engines will have negative effects if BS-IV fuels are used. Even though the engine will be updated to run on low sulphur, the particulate matter filter in the exhaust will serve little-to-no-purpose on BS-IV fuels.
- Oil refineries will need to invest Rs 80,000 crore in upgrading petrol and diesel quality to meet cleaner fuel specifications by 2020.
- The Indian auto industry will fully migrate to the manufacturing of only BS VI compliant vehicles on a pan India basis from April 1, 2020.
- Use of new technology will raise the cost for automobile manufacturers. This means that the cost of vehicles may increase.
According to SIAM President Abhay Firodia, the decision will give confidence to the auto industry about the availability of the fuel grade across the country from April 1, 2020. Delhi consumed 906,000 tons of petrol and 1.26 million tonnes of diesel in 2016-17.