Tata Motors is fully ready with EGR & SCR Technology for BS-IV Vehicles
Published On Apr 27, 2017
India’s largest commercial vehicle manufacturer Tata Motors has announced to have readied the EGR (Exhaust Gas Recirculation) and Selective Catalytic Reduction (SCR) technologies for its BS-IV compliant engines. Tata Motors was the first manufacturer in India to have introduced the EGR technology for commercial vehicles in 2010.
EGR is currently being developed in-house powering the entire range of Tata’s engines including the newer 3-litre and 5-litre motors. SCR on the other hand, was adopted by the company in the year 2014 by collaborating with US-based Cummins. The SCR is a globally proven technology and works fine for M&HCV vehicles ranging from 16T to 49T having the engine capacity from 130 HP to 400 HP.
Talking about the technicalities, the Exhaust Gas Recirculation present in the engine re-circulates exhaust gas back to the engine cylinders after cooling, divesting it from oxygen that leads to lower temperature burn and eventually reducing harmful nitrogen oxides. The EGR comes with enhanced electronic controls and for better results it uses even higher pressure fuel injection, optimized turbocharging and multiple coolers. However, the technology has limited potential of being upgraded.
On the other hand, SCR is a technique that adds a Diesel Exhaust Fluid into the exhaust gas stream of the engine and filters it down through catalyst. The diesel exhaust fluid then vaporizes and decomposes to form ammonia (NH3) which in combination with a catalyst reacts with nitrogen oxide, converting the pollutant into nitrogen and water. SCR consumes less fuel and hence, is utilized for cleaner exhaust for getting better performance and fuel economy. Almost all the diesel engine manufacturers have now adopted the SCR technology as it is globally accepted and can be upgraded to meet even the higher BS-VI norms. EGR is relatively cheap and easy to integrate.
Ravindra Pisharody, Executive Director Commercial Vehicles, Tata Motors said, “Tata Motors has led technology changes in the Indian commercial vehicle industry over the last six decades. We have always endeavoured to develop products and introduce future technologies, ahead of regulations and have played a proactive role in regulation compliance. Tata Motors continues to be at the forefront of meeting emission regulation, driven by our concern on environment and health impact. Introduction and adoption of EGR and SCR technology in 2010 and 2014 respectively reiterates our capabilities with regard to introducing future technologies. Because we strongly believe in offering the best-suited technology for various applications, we will offer both SCR and EGR technologies on BS-IV solutions. This will not only meet regulatory requirements for emission norms but also optimize the total cost of ownership, ultimately benefitting our customers.”
He further added, “Offering precise technology for the right duty cycle and application will be critical for the success and sustainable business operations of the Commercial Vehicle industry. At the onset of BS IV emission norms in India and provident on the ensuing BS-VI emission norms from April 2020, we are confident that our selection of emission control technologies across the Commercial Vehicle range is holistic and the most ideal one, given that it takes into consideration critical aspects such as performance, reliability, commercial affordability, environmental sustainability and future readiness.”