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2010 Infiniti G37 Hybrid Sedan  (Source: AutoblogGreen)

Nissan EV-02  (Source: AutoblogGreen)
Nissan hybrid vehicle prototype uses rear-wheel drive

Nissan pulled the wraps off a pair of prototype vehicles today – one is an all-electric and one a hybrid. Both of the vehicles take advantage of new lithium-ion batteries that Nissan and NEC jointly developed. The two vehicles were developed under the NISSAN GT 2012 business plan.

The advanced lithium-ion batteries used in the prototype vehicles feature a compact, laminated configuration that delivers twice the electrical power when compared to traditional cylindrical configurations. Nissan says that the compact design of the batteries allows for improved vehicle packaging and a wider range of applications when compared to traditional batteries.

The full electric vehicle uses the advanced batteries along with a newly developed 80kW motor and inverter. Nissan says the electric vehicle uses a front-wheel drive configuration and that the advanced laminated batteries are installed under the floor of the vehicle. The laminated design of the batteries means that the vehicles interior and storage space are not sacrificed to battery storage. Nissan says that the full electric vehicle will go into production in 2010 and will feature a new and unique body style not based on existing Nissan vehicles.

Nissan's prototype hybrid electric vehicle introduces a pair of new technologies Nissan says are breakthroughs -- a high-performance rear-wheel drive system and a parallel-powertrain hybrid system. Nissan says that both the hybrid technology and the rear-wheel drive are original designs -- in this case, the system is placed within a 2010 Infiniti G37 Sedan.

Nissan's parallel-powertrain system connects one motor directly to an engine and transmission via two clutches. This layout allows the vehicle to switch between the dual clutches to optimize and conserve energy utilization and improve fuel-efficiency. Nissan says its parallel-powertrain eliminates the need for typical torque converters and contributes to higher responsiveness and linear acceleration.

Nissan describes the action of the hybrid system as:

  • 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.

Nissan isn’t alone in introducing new hybrid vehicles. Yesterday DailyTech reported that Honda was bringing the Insight back to the U.S. as a 2010 model for an MSRP of $18,500. The Insight is rumored to get over 70 miles per gallon.



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RE: Parallel Hybrid
By Alexvrb on 8/6/2008 6:58:39 PM , Rating: 2
Serial hybrids and parallel hybrids each have their place. Some companies are developing both to use in their lineup.

Also, larger wheels are common on prototypes. The final version will have more reasonable wheels. However with that said, larger wheels provide benefits (and drawbacks) beyond just space for larger brakes.


RE: Parallel Hybrid
By Spuke on 8/6/2008 7:05:22 PM , Rating: 2
Those are standard G37 wheels and they're only 18 inches. The old G35 had 18 inch wheels as well. The Japanese don't normally put unnecessarily large wheels on their cars anyways.


RE: Parallel Hybrid
By pauldovi on 8/7/2008 10:31:58 AM , Rating: 2
The only advantage of larger wheel is the ability to put larger brakes inside (which they clearly haven't done) and to reduce the spinning speed of the wheel, which this car definately isn't going fast enough to worry about.

Large wheel are just for show, the problem is, many people think they improve performance, the opposite is true.


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