Rabu, 01 September 2010

Driven: Nissan Leaf

Having announced that they were to be building the Leaf EV at their Washington plant in the UK, Nissan have been taking the car around the UK on a whistle-stop tour of Europe.

Whilst the car was on display at one of the few public showings, Tarmac managed to get a drive in the prototype. Whilst the test car is based on the Tiida model, the running gear is very similar to that which will be seen in the production Leaf in a few years time.

First impressions of the concept car are good. It looks, too all intents and purposes, like a regular car. This of course is for good reason, as regular cars are what people actually want. With the best intentions in the world, electric quadricycles like Reva's G-Wiz will never become commonplace as they can't offer the space and pace that people accept from the cars they're used to.

To this end then, the Leaf is off to a good start. It's a five-door hatchback with space for five, a good boot, and an inoffensive shape that manages to retain a bit of character. The front is modern and equipped with large headlights similar to those on the Ford Fiesta, and the rear has a hint of the last-generation Renault Megane about it. Even the interior is much like a normal car, with normal controls and two hooded instrument clusters. Only the large digital display in the centre console really hints at the Leaf's high-tech drivetrain.

From this point, the package starts looking quite different from regular cars. The shape has been specially designed for aerodynamic efficiency - those lights split airflow over the mirrors to reduce drag, and thanks to LED technology consume less power, too. The large Nissan badge on the nose sits on a hinged flap that opens up to reveal two charging points, one for quick chargers that can provied up to 80% charge in half an hour, and the other for a more leisurely charge. Range is around 100 miles which doesn't sound like a lot, but most research seems to suggest that the majority of journeys in the UK are over fewer than eight miles, so even if you didn't put the car on charge every night most people would still have enough for ten journeys.

The batteries themselves are stored under the cabin floor. The electric motor they power delivers 80kw of power, or around 107bhp. They also give a huge 280nm (206lb ft) of torque from zero rpm.

Sitting behind the wheel of the Tiida-based test car and moving off, this torque is immediately noticeable. Movement is instant and remarkably smooth in a way that even the best automatic transmission in a regular car can't manage. Throttle response can't be faulted. The silence is rather eerie at first but it makes the car seem supremely relaxing to drive - I suspect that the utter silence and smooth power delivery would make even the worst city driving seem far less stressful. As would the controls, which are simplicity in themselves - a tiny joystic selects drive (left and back), reverse (left and forwards) and a little button on the top selects park.

The test car didn't have regenerative braking but the production Leaf will do. As such, the brakes felt quite sharp, having probably been beefed up in the test car to make up for the lack of engine braking. Normally, simply backing off the power would see significant braking from the motor - to the point where using the car's brakes would be an uncommon occurence in town.

Propulsion aside, it again feels just like a regular petrol or diesel powered car. It's difficult to make too accurate a judgement on the finished product given that I only got a three laps of a very short circuit in which to test the car, but both ride and steering seemed fine - presumably no different from the petrol-powered Tiida. Again, this is important in attracting the buying public to the car - all the benefits of EV technology but with none of the drawbacks of cars like the G-Wiz.

Overall, I came away very impressed with the Leaf and itching to have another go. Electric cars are rapidly getting to the point where they can be considered serious alternatives to petrol and diesel cars for many people.

Of course, this is very much price-dependant. The number being thrown about at the moment is around £27,000 which is a lot for a small family car, but as with any technology the early adopters will bear the brunt of higher prices and this will bring down the unit cost for the manufacturers.

The Nissan Leaf is a good car even at this early stage, and a serious indication by Nissan that electric cars can walk the walk as well as talking the talk.

You can follow updates on the Nissan Leaf on their twitter page: https://twitter.com/UKNissanLEAF


Jumat, 20 Agustus 2010

Nissan Pivo 2 Concept























Nissan Pivo 2 concept was unveiled at the 2007 Tokyo Auto Show. It runs on compact Lithium-ion battery. Nissan Pivo 2 has a rotating cabin and wheels that can rotate 360 degrees, this feature allows easy parking. This cool car also has a Robotic Agent, robotic agent is a voice recognizing interface. This feature allows the car to detect and conclude the driver’s mental state by facial expressions and by voice patterns. With this robotic agent you could ask for directions or the nearest parking space or even basic vehicle functions. This feature is available in English and Japanese languages.


The design of Pivo 2 is very unique and futuristic, it has a round dome as it’s main shape with four small wheels. The chassis of the car doesn't have a front or back, instead the dome revolves, letting the driver face whichever direction needs to be front. The Interior of the car also has a dome shape and the dashboard looks like a toy car.






















Nissan Pivo 2 Specifications:

Introduced at : 2007 Tokyo Auto Show

Engine : Energy consumption of a conventional lightweight vehicle

Torque equivalent : V8 4.5L engine (528Nm) (twice the torque output of a conventional electric motor)

Power equivalent : 2.5L engine .

Battery : The new lithium-ion battery (twice the energy density of conventional batteries

Brake : Regenerative braking (Battery capacity has doubled and energy efficiency is improved by better response to regenerative braking).

Special Features :

Robotic Agent : Inferring a driver’s mental state by facial expressions and by voice patterns

Metamo System : a new concept which enables independent control of each wheel (The angles and position of the wheels are controlled to ensure an even load across the chassis to match driving conditions. This optimizes load distribution and ensures stability with minimum body movement during acceleration, deceleration, braking and cornering). The use of In-wheel 3D Motors and X by-Wire technologies.

Kamis, 19 Agustus 2010

Mitsubishi i Miev Sports Concept



















Mitsubishi unveiled i Miev Sport concept at the 2007 Tokyo auto show. i Miev Sport has a simple and fluid exterior and interior design, the layout provides optimal distribution of weight. This futuristic electric car has a sporty performance and spacious interior. This concept car has an aluminum space frame body structure to minimize it’s weight. i Miev also has three permanent magnetic synchronous motors. As environmental considerations, on the roof of i Miev sport an auxiliary photovoltaic generator was installed for energy saving.


i Miev has a sporty, spacious and dynamic interior. The interior gives the security and comfort feelings to the user. Mitsubishi also gives excellent occupant protection from collisions from any direction, even when colliding with a vehicle of different height or weight.
























i Miev Sport Specifications :
Introduced at : 2007 Tokyo Auto Show

Dimensions :

length ; width ; height : 3,450 [mm] ; 1,600 [mm] ; 1,400 [mm]
Body Weight : 970 kg

Body Structure : aluminum space frame

Engine :

Motors : Permanent magnetic synchronous motors
Front : In-wheel motors
Rear : Single motor

Max. output Front : 20kW 2; Rear: 47kW
Max. torque Front : 250 Nm 2; Rear: 180 Nm
Range (10-15 Mode) : 200km

Max. Speed : 180km/h

Wheelbase : 2,550 [mm]
Track (F/R) : 1,405/1,405 [mm]

Tires : 175/40R17

Interior :

Seating capacity : 2 + 2

Sabtu, 14 Agustus 2010

Renault Ondelios Concept

























Renault Ondelios Concept was first introduced at the 2008 Paris Motor Show, Ondelios was inspired by the world of aviation. According to Renault’s Design Director, Renault Ondelios is inspired by motion rather than speed. This luxury hybrid concept is equipped with glazed polycarbonate roof, a pair of gull wing doors that open vertically and futuristic interior.

This Concept car is powered by a 205 HP (150kW) of the 2.0 dCi engine that produce 450Nm of torque. This cool car is using two 20kW electric motors at the front and rear for a brake and boost system that can save more fuels.

























Renault Ondelios interior has three rows of (individual) seats that accommodate up to six passengers. Each seat is equipped with an interactive portable multimedia device which can be used for sharing data or multiplayer gaming. The headrest also has speakers plus multi zone HVAC system for each passenger.


Renault Ondelios Specifications :

Introduced at : 2008 Paris Motor Show

Dimensions :

Length ; Width ; Height : 4,805 [mm] ; 1,998 [mm] ; 1,605 [mm]

Height with doors open : 2,230 [mm]

Engine :

Internal combustion engine : 2.0 dCi

Power : 205 HP ; 150 kW

Maximum torque (Nm) : 450, from 1,700 to 3,800rpm

Motors : Two 20kW electric motors

Motor Location : one at the front and one at the rear

Power supply : 4kWh lithium-ion battery. Size: 40dm3. Weight: 50kg

Acceleration from 0 to 62mph : 7.8

CO2 emissions : 120g/km

combined cycle fuel consumption : 4.5 litres/100 km

Transmission : Double-clutch seven-speed automatic transmission, Internal combustion engine drive and electric motor drive

Wheel :

Wheel base : 2,895 mm

Front track : 1,690 mm

Rear track : 1,720 mm

Unladen weight : 1,452 kg

Boot (dm3) : 530

Tires : 255/45 ZR23

Wheels Diameter ; Width : 23" ; 9"

Partners: G Studio (Bodywork), Michelin (Tires), Samsung (Telephone for communication with vehicle)

Senin, 09 Agustus 2010

VW Space UP!

Space Up! is a new concept car from Volkswagen. This family car was first introduced at the 2007 Tokyo Auto Show. VW Space Up! Is a fun car that offers maximum space on the smallest of platform. The exterior design has a very straight lined. This cool car has 3.68 meters length , 1.63 meters width and a large 18 inch wheels with 165/50 tires. The interior has four seat and in the rear is implemented with two integrated child seats. Each of the cushion of the seats has an airflow foam that automatically adapt to individual anatomies. All seat can also be folded and removed except the driver seat.

The engine is using environmentally friendly gasoline engines, diesel engines and electric powertrains. The engine is located in the rear. This cool car also has an 8 inch monitor display that shows vehicle information such as vehicle speed, fuel level, range and CO2 emission. All of the conceivable functions are controlled by a touch screen integrated with proximity sensors that reacts to gestures and specific hand movements. VW Space Up! Is a fun family car with confident design and extremely comfortable seats.

Minggu, 08 Agustus 2010

Chevrolet Volt Concept



















Chevrolet Volt is scheduled to launch on 2011, this cool car is able to travel 40 miles on a single charge without using any gasoline or emissions. Chevrolet Volt also has an electric motor powered by a 1.4-liter four-cylinder flex-fuel engine as a backup, this motor will take over when the car goes beyond the 40 mile range.















Chevrolet Volt concept has a sophisticated design, the design and engineering is a result from collaboration between GM designer and GE Plastics. Their technology make the exterior appearance of the Volt become more bold and futuristic. The Interior of this concept car is ergonomic and futuristic.

Chevrolet Volt Concept Specifications :

Dimensions :

Length ; Width ; Height : 4,318 [mm] ; 1,791 [mm] ; 1,336 [mm]

Front and Rear Tracks : 64 inches / 163 mm

Body style / driveline: 4-5-passenger sedan, unitized frame, electric propulsion, front wheel drive

Construction: body-frame-integral structure with composite exterior panels and roof


Drive System :

Description : electrically driven system with on board range extender, plug-in recharge capability

Type : lithium-ion

Energy : 16 kWh (minimum)

Peak power : 130 to 140 kW

Voltage : 320 to 350

100% Recharge 110-volt outlet : 6 to 6.5 hours

Max. electrical power : 130 to 140 kW

Max. mechanical power : 120 kW

Continuous electrical power : 45 kW

Continuous mechanical power : 40 kW

Power : 53 kW peak power

Drive : direct

Type : 3-cylinder, turbocharged engine

Size : 1L

Fuel : gas or E85

Nominal speed : 1500 to 1800 rpm

Max speed : 3200 rpm

Fuel tank (gal / L) : 12 / 54.5

Type : plug-in

Voltage / amp : 110 / 15

Horsepower (hp / kW) : 160 / 120

Torque (lb-ft / Nm) : 236 / 320

Electric mode range : 40 miles – full electric vehicle (EV) range

Estimated fuel economy @ constant state of charge : 50 mpg during charge sustaining operation

0 to 60 mph : 8 to 8.5 seconds

Top speed (mph) : 120 (limited duration)

Chassis/Suspension :

Front : independent, strut-type

Rear : semi-independent torsion beam

Steering type : electric, speed-sensitive, variable assist rack-and-pinion

Turning circle, curb-to-curb (ft / m) : 37 to 38 / 11.2 to 11.5

Brakes Type : electro-hydraulic power assisted; front disc, rear drum

Wheel size (in) : 21 x 6.5

Tires : 195/55R21, low-rolling resistance


Interior :

Seating capacity (front / rear) : 2 / 2

Jumat, 06 Agustus 2010

Pontiac Solstice SD-290





















The inspiration of Pontiac Solstice SD-290 concept is coming from a vintage race car design. The design concept really capture the design of vintage race car and evoke the emotions of classic sport cars. The concept design has an old sc
hool look with a passenger cockpit tonneau cover and a driver windscreen, creating a pure race car looks.

Pontiac reduce the weight of the car, improved the aerodynamics and also redesigned the fender gill panels. They also created a new hood with heat-extracting grilles, a red paint scheme and cockpit filled with auxiliary gauges, a roll bar and racing seat.

This race car concept has direct-injected, turbocharged 2.0-liter Ecotec four-cylinder engine that produced 290 horse power, this is the reason they call it Pontiac Solstice SD-290.


Official Pontiac Solstice SD-290 Features Highlight from GM :

- 2.0L Ecotec direct-injected and turbocharged generating 290 horsepower

- Five-speed manual transmission

- Weight reduction through installation of driver-side only windscreen and elimination of door glass/hardware, convertible top/hardware, HVAC system and wiper system

- Solo Performance cat-back exhaust system with center-mounted outlet

- KW Automotive coil-over suspension package

- Three-piston aluminum calipers with 13-inch rotors from Stainless Steel Brake Company

- Forged 19-inch wheels with Hoosier R6 racing tires

- New front fascia, grille inserts, hood and front fenders, leading to better aerodynamics

- Passenger-side hard tonneau cover

- Competition red exterior color

- Rear spoiler

- Tinted headlamp lenses

- Removable racing-style steering wheel

- Racing seat with four-point safety harness

- Chrome fire extinguisher

- Pegasus center console gauge package

- Driver's roll bar




















Pontiac
Solstice SD-290 Specifications :

General Specifications :

Country Of Origin : United States

Introduced at : 2007 SEMA Show


Engine :

Configuration : 2 liter Ecotec i-4

Engine Location : Front, longitudinally mounted

Powertrain Layout : Rear Wheel

Displacement : 2.00 L | 122 cu in. | 1999.6 cc.

Construction : cast-aluminum block and head

Displacement : 1.998 liter / 121.9 cu in

Bore / Stroke : 86.0 mm (3.4 in) / 86.0 mm (3.4 in)

Compression : 9.2:1

Valvetrain : 4 valves / cylinder, DOHC

Fuel feed : Direct Fuel Injection

Aspiration : Turbo


Drive Train :

Gearbox Transmission : 5 speed Manual

Drive : Rear wheel drive


Performance :

Power : 290 bhp / 216 KW

BHP / Liter : 145 BHP / Liter