While Nissan has been offering a version of the Altima in selected states for the last two years with a licensed version of the Toyota's hybrid system, they have been diligently working on their own design back in Japan. The Nissan developed system is expected to debut in 2010 in an Infiniti model and the company is now showing a prototype publicly for the first time. The new system is a single motor configuration with two clutches that allow the vehicle to be powered by either the engine, the electric motor or both. When the system launches it will be the first from the Japanese automaker to be applied to a rear wheel drive platform and the first to use lithium ion batteries.
Also using lithium ion batteries will be Nissan's electric vehicle launching in 2010. At the New York Auto this Nissan showed the Denki Cube, a battery powered version of the Japanese market Cube. A next generation prototype with new batteries and a new 80 kW motor and inverter is now running in preparation for the fleet launch of an all-new electric car. The production model will have distinct styling and won't be based on any other existing Nissan vehicle. The Nissan-NEC joint-venture, AESC (Automotive Energy Supply Corporation) will be supplying batteries for both vehicles. The Nissan press release is after the jump.
NISSAN PREVIEWS NEXT GENERATION ENVIRONMENTAL VEHICLES
- All-electric and original hybrid electric prototypes unveiled –
TOKYO (August 6, 2008) - 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 (Test vehicle) Hybrid vehicle (Test vehicle) Lithium-ion battery
Electric Vehicle (EV)
Powered by advanced lithium-ion batteries, the EV prototype is part of Nissan's 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 – a high-performance rear-wheel drive hybrid system and parallel-powertrain hybrid system. The hybrid employs Nissan's 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.
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.
Nissan has long experience in electric-powered vehicle development, commencing from the first EV "Tama Electric Vehicle" back in 1947. The company introduced the world's first application of lithium-ion batteries to the Prarie Joy EV in 1996, followed by the ultra-compact electric vehicle, Hypermini, released in 2000. Nissan also introduced its first original hybrid vehicle Tino Hybrid back in 1999 in Japan. In 2006, the Altima Hybrid was introduced in North America using licensed technology.
Under the Nissan Green Program 2010 environmental plan, the company aims to develop new technologies, products and services that can lead to real-world reductions in vehicle CO2 emissions, cleaner emissions, and recycling of resources. Nissan continues to invest substantially in a wide range of technologies including CVT (Continuously Variable Transmission), VVEL (Variable Valve Event and Lift), clean diesels, biofuels and fuel cell vehicles.