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Hybrid and electric vehicle development

Since 2007, Tata Motors has been active in the development of a number of different xEV concepts. Some of the work on these vehicles has been done in TMETC to take advantage of the strong skill base of engineers and suppliers in Europe and also to leverage funding and incentives from UK and EU government agencies.

Feature deployment includes:

Micro hybrid

Stop/start with intelligent power system management, which will be expected as a basic powertrain function in the future across all markets.

Mild hybrid

Likely to offer the best cost-benefit ratio in the medium term for the Indian market, with integrated starter-generator. Options to be considered include:

  • Functionality (degree of e-Assist / e-Drive)
  • Belt-ISG or Crank-ISG (engine vs transmission integrated)
  • System voltage & battery technology (VRLA - NiMH - Li-ion)
  • Ancillary drive implications (e-Ancillaries)
Full hybrid
  • Varied market requirements considering domestic and export territories
  • Challenging targets to deliver vehicle-level profits
  • Strongly driven by government incentives, 'halo effects' or fleet CO2 achievement

In focus: Manza REEV project

Objectives:
  • Demonstrate viability of a simple APU acting as a range extender in an electric vehicle
  • Develop the control strategies to allow effective use of a Range Extender APU in a passenger car vehicle
  • Understand the issues and identify solutions for operation of an EV with Range Extender (as an example Regenerative braking)
  • Assess real life performance of a REEV and assess customer acceptance
  • Provide a platform to validate TML developed battery technology, Electric vehicle architecture and Vehicle Controller
Characteristics:
  • Pure electric range - 55 miles
  • CO2 emissions declared ECE regime - 30g/km
  • Acceleration - 0-60 mph < 15 sec
  • Max speed - 85 mph
  • Tata in-house battery - 13.8 kWh
  • Nominal voltage - 360 V
  • Drive motor - 75 kW continuous (104 kW peak)
  • 2 Cylinder Engine - 30 kW
  • Compact axial flux generator
  • Tata Supervisory Vehicle Controller

In focus: Fuel cell development

Objectives:
  • Understand the real life issues associated with use of fuel cells in passenger cars
  • Understand the advantages of high power density evaporative cooled fuel cell stack (market review)
  • Experience and knowledge of mechanical integration into a passenger vehicle
  • Appreciation of control strategy and development of options
  • Understand real life well to wheel C02 benefits of fuel cell hybrids