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The necessity of hybrid vehicles and electric vehicles is well known by now for reasons like fossil fuel depletion, climate change, emission norms mandated by regulations etc. With the addition of electric motor, battery and associated power electronics, the cost of powertrain and hence the vehicle goes up, which is often a hindrance for OEMs and end-customers. With the objective to make a cost-effective strong hybrid, Tata Motors has approached this problem by taking economies of scale approach i.e. developing an add-on gearbox module, which can fit a family of cars, in a P3-off axis hybrid configuration to an electrically actuated AMT. This paper presents the preliminary simulations, which show this architecture yielding a reduction of fuel consumption by ~20% for a B-class sedan/compact SUV of ~1800kg and ~15% improvement in acceleration performance. Additionally, the design and packaging studies show the fitment possibility in a highly congested powertrain bay.

Hybrid Electric Vehicles (HEV) is well accepted short-term and medium-term response to the problems of rising crude prices and technical challenges of the new hydrogen and battery technologies. This paper describes the performance of a novel HEV transmission system that overcomes the deficiencies of existing solutions and gives a better, real-time implementable, fault-tolerant, simple yet future-worthy and real-time solution. The performance of the system is evaluated using the ADVISOR software. Sanity checks are performed to see cycle to cycle performance and operating points of the ICE engine and the motor / generator.