10. Role of Diesel Particulate Filter to Meet Bharat Stage-VI Emission Norms in India

Majority of passenger vehicles run on diesel and sold in India, new millennium have become the preferred choice of the customers along with commercial vehicles due to lower fuel cost, more mileage and comparable performance as compared to petrol driven vehicle apart from having better thermal efficiency due to its high compression ratio. However, the diesel-powered vehicle produces relatively high particulate emissions along with other pollutants when compared to petrol vehicles. Bharat Stage (BS) VI requires a 90% reduction of Diesel Particulate Matter (DPM) from BS IV. This high level of reduction in the DPM can be achieved with the help of diesel particulate filter (DPF). Incorporating DPF in the tail-pipe of a diesel engine is challenging as it requires its appropriate size, accurate position in the tailpipe and minimum pressure drop. Adding a DPF not only reduces the amount of DPM released into the atmosphere, but also help to reduce the fuel consumption, better transient response, and minimize operating costs. This chapter discusses the comprehensive details of material and regeneration processes used in DPF, including action plan for developing it BS-VI compatible.