CURRENT AFFAIRS

Detailed explanation-1: -BSVI fuel is estimated to bring around an 80% reduction in sulphur content - from 50 parts per million (ppm) to 10 ppm. Also, NOx emissions from diesel cars are expected to come down by nearly 70% and, from cars with petrol engines, by 25%.

Detailed explanation-2: -BS4 emission rules do not allow vehicles to discharge more than 80mg/km of NO2, while the BS6 emission rules have minimised it to 60mg/km. The Particulate Matter (PM) for petrol vehicles has been fixed to 4.5mg/km in the BS6 emission norm.

Detailed explanation-3: -While the BS4 emission norms allow a motor vehicle to emit not more than 80mg/km of NO2 (nitrogen oxides), the BS6 emission norms have reduced it to 60mg/km. The Particulate Matter (PM) for petrol vehicles has been restricted to 4.5mg/km in the BS6 emission regime.

Detailed explanation-4: -Under the BS-VI fuel, for 1 KM, a car will emit 80% less PM and almost 70% less nitrogen oxide (in a diesel engine). In a petrol engine, the emission of nitrogen oxide would be less by 25%.

Detailed explanation-5: -BS-VI fuel’s sulphur content is much lower than BS-IV fuel. It is reduced to 10 mg/kg max in BS-VI from 50 mg/kg under BS-IV. This reduction makes it possible to equip vehicles with better catalytic converters that capture pollutants. However, BS-VI fuel is expected to be costlier that BS-IV fuel.