Ufficiale: Volkswagen Golf Blue-E-Motion Concept

beckervdo · 10 Novembre 2010

Gallery Completa Volkswagen Golf Blue-E-Motion Concept

Energy-conscious driving with impressive performance
More noticeably than on today's modern petrol or diesel engines, the maximum range of an electric car is severely reduced when its maximum power is demanded frequently. Therefore, the 135 km/h fast and very aerodynamic Volkswagen Golf blue-e-motion (Cd value: 0.295) provides ample power reserves to move the car swiftly while consuming less energy, and it can even coast or "sail" as it is called in the professional jargon. "Sailing" occurs whenever the driver - adopting an anticipatory style of driving - releases the gas pedal, or rather the electric pedal. The motor is then controlled to the zero-torque curve so that the car can coast with the least possible drag. In this mode of driving, the VW Golf blue-e-motion even recovers kinetically generated energy by battery regeneration. The end result is that the zero-emissions Golf has enough performance potential to quickly execute manoeuvres such as passing. An index of the car's very good dynamic qualities is its time for the sprint from 0 to 100 km/h: 11.8 seconds.
Lithium-ion battery
The concept car's 30 battery modules - consisting of 180 lithium-ion cells (energy capacity: 26.5 kWh) - were installed in spaces adapted to the vehicle architecture. They can be found in the floor of the bootspace (fully usable cargo capacity: 275 litres), under the rear bench seat and in the centre tunnel of the underbody (between the front seats). A separate air cooling system ensures a constant thermal environment in the battery compartment. The battery modules weigh a total of 315 kilograms.
Instruments tailored to electric driving
The driver can see how much energy is being demanded by the "electric pedal" at any given moment on the kW gauge (replaces the classic tachometer); drivers strive to keep the kW reading as low as possible practically intuitively. A range indicator is also integrated in this round instrument. The speedometer, located on the right side as usual, integrates another small gauge that provides information on the battery charge state.
Individual choices in battery regeneration
A new feature is the display of regeneration intensity in the multifunction display between the kW instrument and the speedometer. In battery regeneration, the driver has the option of pre-setting the braking energy recovery strategy over four stages (D to D3) via the automatic gearshift lever or gearshift paddles on the steering wheel. In the lowest stage (D), the car "sails" as soon as the driver's foot leaves the "electric pedal" - now the Volkswagen Golf blue-e-motion moves with very low drag; it is only "slowed" by the rolling resistance of the tyres and air resistance. In the D3 stage, or B for braking, on the other hand, the maximum amount of kinetic energy is recovered and fed to the battery. In addition, the electrical energy consumption of the automatic climate control unit and its blower can be called up in the multifunction display.
Three driving profiles control comfort, dynamics and range
In addition, an active driving profile can be set; this lets the driver select priorities in advance: between maximum range, maximum comfort and maximum dynamics. The selected profile then pre-configures the power of the electric motor, air conditioning control, maximum speed and battery regeneration strategy.
The Volkswagen Golf blue-e-motion offers the three profiles "Normal," "Comfort+" and "Range+." In the "Comfort+" profile, the full 85 kW of power is available; in this mode the Golf blue-e-motion can attain the specified top speed of 135 km/h. When the driver activates the "Normal" mode, power is reduced to 65 kW and top speed is lowered to 115 km/h. In the "Range+" mode the engine controller limits power to 50 kW; in this case, the car can reach a maximum speed of 105 km/h. At the same time, the air conditioning system is completely deactivated. The selected profile is shown in the multifunction display.
Full charging via the VW logo
The Volkswagen Golf blue-e-motion is charged via a plug connector behind the folding VW logo on the radiator grille. A pictogram of a plug connector in the multifunction display indicates that the charging cable is correctly inserted and locked. During active charging an LED also flashes in the charge state indicator, and the charge level shown in the indicator is continually updated.
Packaging of the drive system
All key primary and secondary drive components were integrated in the front engine compartment. In arriving at this design, developers applied experience they had gained in numerous design studies. As in the Up! blue-e-motion concept car, for example, an integral form of electric drive is used in the Volkswagen Golf blue-e-motion. Core components of the integral drive are the lightweight 80 kg electric motor together with a transmission and differential. Energy management is handled by a high-voltage pulse-controlled inverter that is integrated in the compact integral drive - along with the 12 Volt electrical system's DC/DC converter and charging module. The entire unit is relatively light and compact; the five-door and five-seat Volkswagen Golf blue-e-motion weighs just 205 kg more than a comparable Golf BlueMotion TDI with DSG - despite the fact that electric car batteries are known to be heavy and weigh 1,545 kg in the concept car. Yet, the car's safety properties are identical.
VW Golf blue-e-motion Concept - Technical Data

Dimensions

Length: 4,199 mm

Width: 1,786 mm

Height: 1,480 mm

Wheelbase: 2,575 mm

Motor

Motor type: Electric motor

Power (max. / continuous): 85 kW / 50 kW

Max. torque: 270 Nm

Gearbox / Tyres

Gearbox: EQ 210 (1-speed transmission)

Drive type: Front-wheel drive

Tyre size: 205/55 R16

Driving performance

0-100 km/h: 11.8 s

Top speed (Comfort+ mode): 135 km/h

CO2 emissions with electricity generated from renewable resources: Negligible

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Via NetCarShow.com

spaggioracing · 11 Novembre 2010

Ecco...una macchina normale, puramente elettrica!

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Ufficiale: Volkswagen Golf Blue-E-Motion Concept

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Ufficiale: Volkswagen Golf Blue-E-Motion Concept

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spaggioracing Presidente Onorario BMW

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