Tata Motors CNG engine gets BS-VI certification

Tata Motors has received BS-VI Type Approval certificate for its 3.8L NA SGI CNG engine from ARAI (Automotive Research Association of India). It is the first OEM in India to get BS-VI certification for a naturally aspirated CNG engine for commercial vehicles. This certification includes meeting the tailpipe mass emissions as well as compliance with On-Board Diagnostics (OBD) norms as mandated by government regulation.

Rajendra Petkar, Chief Technology Officer (CTO), Tata Motors, said, “This BS-VI engine certification milestone has been crossed 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 BS-VI solution will further reinforce our market offering.”

The 3.8 NA SGI CNG engine is a naturally aspirated engine does not need a turbocharger. It produces a maximum power of 85 Ps @ 2500 RPM with a torque of 285 Nm @ 2500 RPM. The combustion occurs at stoichiometric conditions in this engine. This engine comes with sequential gas injection technology, pioneered by Tata Motors in India. Exhaust after-treatment system featuring three-way catalytic converter reduces pollutants below limits mandated by regulation.

The 3.8 NA SGI CNG engine will power 4T to 9T GVW buses and trucks such as 407, 709 and 909 (existing BS-IV versions), which are already very popular models in the market, with the best-in-class fuel efficiency.

A state of the art Emission Test Facility has been installed at the Power Systems Engineering Division (PSE), in ERC, Pune. This facility serves as one of the crucial milestones for BS-VI implementation, the company said.