Browse Publications Technical Papers 2019-26-0129
2019-01-19

Optimized Electrification Solution for App-Based Taxi’s in Indian Cities 2019-26-0129

ABSTRACT: The emission legislations are becoming more stringent across the globe. The Indian government has also announced the implementation of BS6 emission legislation by 2020 all across Indian cities. App based taxi’s are becoming a lifeline for all major Indian cities, which are predominantly diesel powered compact car applications. The urban growth will lead to pockets of high emission zones. Electrification will be a good idea to improve local air quality in the cities. On one side, upgradation of internal combustion engines will add costs due to expensive exhaust after-treatment system, controls and sensors. On the other side, electric motor driven taxi’s can be ideal solution for emission reduction, but the current available electric vehicles are expensive than its internal combustion engine powered counterparts. An optimization of drive train power, rechargeable electric energy storage system, charging infrastructure and subsidies can bring the cost of the vehicles down to become a competitive proposition to conventional internal combustion engine powered vehicles. This proposed work begin with SWOT analysis for vehicle electrification in keeping clean urban mobility as central objective. The city driving data collected from Pune city with a taxi segment vehicle was statistically analyzed to arrive at a real driving cycle for such an app-based taxi. The driver demand will be translated in sizing the motor. The powertrain losses and other accessory loads like air conditioning, infotainment system etc. from the real driving were used in decision of energy storage system. The cost optimization between 48v in comparison to high voltage (100……400v) energy storage system and propulsion components is included in the study. An analysis of the energy consumption of the proposed electric powertrain to the conventional powertrain was also included in terms of cost per kilometer. Last but not the least, analysis of various charging infrastructure including the current best practices available globally and new innovative ideas specific to app based taxi requirements have been evaluated and detailed, as the charging infrastructure will be the corner stone in building the electrified mobility in cities. The presented work limits at the tank to wheel efficiency in analyzing cost effective powertrain components and systems. The output from this work will be used in requirements in all dimensions towards right sizing the electric vehicle for the future urban mass mobility in Indian subcontinent.

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