Comparative Study of Real Driving Emission with Different Gasoline & Diesel Fuel Blends Using Portable Emission Measurement Equipment on IOCL Faridabad Specific RDE Compliant Route

India has recently shifted from BSVI 1.0 emissions norms to BSVI 2.0 RDE (Real Drive Emission) norms ready with implementation of conformity factors for the measurement of on-road emissions. The discrepancies between emission values measured in the laboratory (under controlled ambient conditions) and actual emission values on the road (under real driving conditions) will be reduced with the implementation of BSVI 2.0.

Fuel impacts the vehicular tail pipe emission in a greater way and various regulated emission pollutants are reduced significantly. Government initiated fuel formulations like oxygenated fuels (E10 & E20) and OMCs (IOCL) initiated differentiated diesel fuels plays significant role in achieving the targets for real driving emissions. Current study was performed on BSVI gasoline port fuel injection vehicle, gasoline direct injection vehicle and diesel vehicle on RDE compliant route (Faridabad specific – route formulated by Indian Oil R&D Centre) with different set of test fuels as per IRDE BS6 2.0 (Indian Real Drive Emissions) norms. The on-road emissions data was generated with AVL make RDE PEMS equipment (Portable Emission Measurement System) along with post processing of the collected data as per RDE test procedure.

The test vehicle was driven on-road as per RDE compliant route & boundary conditions and conformity factors were calculated in each case for CO & NO_x pollutants. Reference CO2 values were measured on standard regulatory legislative test cycle i.e., Modified Indian Driving Cycle on chassis dynamometer. Distance specific as well as CO2 window specific emissions were measured during the whole RDE trip and the RDE test passed with all fuel formulations and significant reduction was observed in major regulated tail pipe emissions. The study supports the fact that various novel fuel formulations can support the automotive OEM’s in meeting the stricter RDE emission regulation in terms achieving the better conformity factors for the emitted tail pipe emission.