http://www.ziddu.com/download/17126806/EmissionControlSystem.pdf.html
It covers various topics like Sources of engine pollutants of S.I and C.I engine. Effect of pollutants on human and environment.
Methods of Control – Crank case, fuel tank ventilation, carburation and recirculation. Redesigning of various engine system, V.V.R. Exhaust gas recirculation systems. Catalytic converters.
