The government has hiked the excise duty on petrol by Rs. One a litre and on diesel by Rs. 1.50 per litre.However, the hike will not result in any increase in retail selling price of the two fuels.The increase in excise duty will fetch the government over Rs. 3,200 crore during the remainder period of the current fiscal.This is the third increase in duties during this month.Basic excise duty on unbranded or normal petrol has been increased from Rs. 8.48 to Rs. 9.48 and on unbranded diesel it has been increased from Rs. 9.83 to Rs. 11.33 per litre. The basic excise duty on branded petrol has been raised from Rs. 9.66 to Rs. 10.66 and the same on branded diesel from Rs. 12.19 to Rs.13.69 a litre.