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Nissan Previews Next Generation Environmental Vehicles


TOKYO .- Nissan Motor Co., Ltd. today unveiled all-electric and original hybrid electric prototype vehicles, both powered by advanced lithium-ion batteries. Under the NISSAN GT 2012 business plan, the company has committed to zero-emission vehicle leadership, and has announced plans to introduce an all-electric vehicle in 2010 and mass market globally in 2012.

Electric Vehicle (EV)
Powered by advanced lithium-ion batteries, the EV prototype is part of Nissanís substantial research and development program on zero emission vehicles. This latest generation vehicle features a front-wheel drive layout and uses a newly developed 80kW motor and inverter. The advanced laminated compact lithium-ion batteries are installed under the floor, without sacrificing either cabin or cargo space.

The production vehicle to be introduced in 2010 will have a unique bodystyle and is not based on any existing Nissan model.

Hybrid Electric Vehicle (HEV)
The Nissan original HEV delivers two breakthrough technologies Ė a high-performance rear-wheel drive hybrid system and parallel-powertrain hybrid system. The hybrid employs Nissanís own originally developed hybrid technology and its first rear-wheel drive hybrid powertrain.

The parallel-powertrain system comprises an energy-optimizing system with two clutches, where one motor is directly connected to an engine and transmission via two separate clutches. Under changing driving conditions, the motor switches between the two clutches to optimize and conserve energy utilization as well as improve fuel-efficiency.

The parallel-powertrain hybrid system eliminates the need for conventional torque converters, contributing to higher responsiveness and linear acceleration for improved driving feel.

The dynamic characteristics of the clutches are as follows:

* Idle-stop: The battery is used to power the motor to save on fuel.
* Regular driving: The engine is used to power the motor as well as regenerate the battery.
* Acceleration: Both the engine and battery (power assist) is used to power the motor to achieve smooth acceleration.
* Deceleration: Energy from braking is conserved and re-routed back to regenerate the battery.

Lithium-ion Battery
The advanced lithium-ion batteries used in both prototypes are sourced from the Nissan-NEC joint-venture, AESC (Automotive Energy Supply Corporation). These advanced batteries offer superior performance, reliability, safety, versatility and cost competitiveness, compared to the conventional nickel metal-hydride batteries. Its compact laminated configuration delivers twice the electric power compared to conventional nickel-metal hydride batteries with a cylindrical configuration. The compact batteries also allow for improved vehicle packaging and a wide range of applications.


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