Why Tata Motors is offering both EGR and SCR in BS IV trucks and buses?

Tata Motors, the country’s largest truck and bus manufacturer, announced readiness of SCR (Selective Catalytic Reduction) and EGR (Exhaust Gas Recirculation) technologies for BSIV compliant engines, powering its range of Commercial Vehicles.

Exhaust Gas Recirculation (EGR) technology adopted by Tata Motors in 2010 will continue to power small-to-medium category of commercial vehicles with engine power requirements up to 180HP. EGR helps toreduce NOx emissions from the engine. Additionally, Tata Motors has adopted the globally proven SCR technology since 2014 for its Medium and Heavy-Duty Commercial vehicles ranging from 130HP to 400HP. Tata Cummins Ltd, a JV between Tata Motors and US-based Cummins Inc. has developed these engines. SCR technology allows engine to operate at more optimal combustion temperature providing better power, fuel efficiency and lower NOx and particulate matter generation.