With the launch of Nexon, we added two power-packed and performance-oriented engines to our powertrain family – the 1.2L turbocharged petrol engine from Revotron and the 1.5L Revotorq diesel engine. We have recently also rolled out the Turbotronn series of diesel engines of 3L, 3.3L and 5L capacities which have been developed for commercial vehicle applications. These new generation engines offer an unrivalled package of fuel efficiency, performance and refinement, and offer the latest technology available in the global automotive market. They have been indigenously designed and developed at Tata Motors' in-house facility in Pune (India) with inputs from renowned global technology suppliers like AVL, Bosch, Mahale and Honeywell.
With enhanced customer benefits, the Revotron and Revotorq engines sport the first-in-segment multi drive modes – eco, city and sport. The eco mode has been designed to offer a relaxed drive experience with better fuel economy. The city mode enables a perfect city drive ensuring optimum balance between power and torque. The sport mode permits superior throttle response and is ideal for a spirited drive experience.
The Turbotronn series is suitable for all types of commercial vehicle applications – from 7T LCVs to 37T multi axle vehicles. The USP of this next generation engine family is its best-in-class fuel economy, which ensures higher performance (flat torque curve and high low end torque), lower total cost of ownership, along with better reliability and durability. It also offers lower oil consumption and longer service intervals (40,000 km for 3.3L and upto 100,000 km for 5L). These engines incorporate several innovative features (such as off-set cylinders, top-down cooling, rear gear train, piezoelectric/solenoid central vertical injectors, cylinder block with bed plate for low NVH, centrifuge oil filter, VGT, etc.) and are design protected to meet future emission requirements (BS-6 and beyond).
In 2010, Tata Motors became the first Original Equipment Manufacturer (OEM) to introduce Exhaust Gas Recirculation (EGR) technology in India for Bharat Stage (BS) IV engine on commercial vehicles. EGR has been developed in-house and covers the entire range of Tata engines, including the new generation 3-litre and 5-litre engines.
We also created a new benchmark with Selective Catalytic Reduction (SCR) technology in 2014 for M&HCV truck and bus applications on Tata Cummins engines. The SCR offers cleaner exhaust, better power and improved fuel efficiency. It is the globally proven technology for all Euro 4 and above applications for the entire range of M&HCV. SCR will enable Tata Motors to meet stringent BS VI emission norms.
Taking a step further in developing comfortable mass transportation solutions, Tata Motors has also launched Automated Manual Transmission (AMT) technology in its Starbus and Ultra brand of buses, ranging from 12m and 9m, developed especially for application in cities with heavy traffic. The Tata AMT buses are manual as well as automatic, and come with economy and power modes. In the power mode, automatic gear detection emphasises sufficient engine torque capability to maintain agility and drivability even in case of demanding duty cycles; the economy mode ensures optimal fuel consumption.
The AMT technology of the bus, coupled with a powerful new generation engine, automatically engages the vehicle's clutch and shifts the gear. It also considers the driver's operation, engine torque, vehicle load and road inclination, resulting in an optimised gear shifting and hassle-free driving experience.