Tata Motors has received BS6 Type Approval certificate for the 3.8L SGI CNG engine from ARAI (Automotive Research Association of India). With this, It has become the first automaker in India to achieve BS6 certification for a naturally aspirated CNG engine for commercial vehicles. This certification includes meeting the tailpipe mass emissions as well as compliance to On-Board Diagnostics (OBD) norms as mandated by government regulation. For those asking, BS6 norms will come into force in India from 1st April, 2020.
Speaking on the occasion Mr. Rajendra Petkar, Chief Technology Officer (CTO), Tata Motors said, “This BS6 engine certification milestone has been achieved with intense design and development focus, by leveraging in-house capabilities and those of our technology partners. We have worked hard to build a leadership position in the market by providing our customers with economical, best-in-class natural gas vehicle products in the commercial vehicle market and this development of BS6 solution will further re-inforce our market offering.” In order to upgrade from BSIV to BSVI, the company has installed a state of the art "Emission Test Facility" at the Power Systems Engineering Division (PSE), in ERC, Pune which serves as one of the crucial milestones for BS6 implementation.
Speaking of the naturally aspirated 3.8L SGI CNG engine, it develops top power of 84bhp at 2500rpm and peak torque of 285Nm at 2500rpm. Since it is a naturally aspirated unit, it doesn't need a turbocharger. This engine comes with sequential gas injection technology, pioneered by Tata Motors in India. The engine also features exhaust after-treatment system with three-way catalytic converter which reduces pollutants below limits mandated by regulation. This engine will power 4T to 9T GVW buses and trucks such as 407, 709 and 909 (existing BS4 versions), which are already very popular models in the market, with the best-in-class fuel efficiency. Truck applications include water tankers too.