Showing posts with label Wheel Motor. Show all posts
Showing posts with label Wheel Motor. Show all posts

Friday, September 23, 2011

Ford E-Bike packs a Galaxy S II on the bars, motor in the wheel


Designed to show how the company's design language can translate to a bicycle, the Ford E-Bike Concept also demonstrates the spectrum of Ford's electric mobility competence. Ford has no plans to produce the E-Bike but will continue studying the concept along with other future mobility solutions.

“The E-Bike market is growing very, very rapidly, with some 30 million units sold globally last year,” said Axel Wilke, director, vehicle personalisation, Ford Customer Service Division Europe. “We see E-Bikes as an important element of urban electric mobility. More and more people are using E‑Bikes for short distance commuting and they are becoming comfortable with the concept of electric mobility."

Cross-Gender Design

Developed by a Ford Design team led by Executive Design Director Martin Smith, in partnership with cyber-Wear, the German brand behind Ford's popular Lifestyle Collection products, the Ford E-Bike Concept has been created from the ground up to appeal to both men and women.

At the heart of the design is a trapezoidal frame profile. Constructed from aluminium and carbon, the frame combines outstanding strength with a weight of just 2.5kg. The wheels, with a six-spoke V-design, appear to float around the frame, while the drive system is hidden from view, creating a clean, minimalist appearance.

Cutting-Edge Technology

Providing the power is a drive system consisting of a motor in the front wheel hub, a lithium-ion battery concealed in the frame, promising a range of up to 85km on a full charge, an integrated controller and patented magnetostriction sensor technology from the world of Formula One.

Magnetostriction materials are used to convert magnetic energy into kinetic energy, and vice versa. In Formula One, these sensors help handle high engine revolutions in combination with intense thermal strains. They need no physical contact with other parts of the engine, are temperature-independent and are completely maintenance-free.

In the Ford E-Bike, the first application of this technology in the bicycle industry, the sensors read the revolutions in the inner bearing and relay this information to the control unit within a hundredth of a second. The control unit then instantly activates or deactivates the electric motor, providing a seamless integration of the power of the legs with the power of the motor.

A handlebar-mounted display provides trip information and allows the rider to select from three support modes – Economy, Comfort and Sport.

Range-Topping Bicycle Components

The drive system is complemented by top-of-the-range bicycle components, including a Shimano Alfine 11-speed internal gear hub and a 2012 Shimano Rapidfire shifter. In place of a traditional chain is a Carbon Belt Drive System, making for a cleaner, lighter and more immediate transfer of energy.

"With its cutting edge design, cross-gender appeal, robust build quality and high performance drive package, we believe the Ford E-Bike Concept would be the perfect addition to the e‑mobility solutions we will offer," added Wilke.

Technical Specifications

Drive Unit:
Front wheel hub motor
Max. nominal power: 350W
Electricity: 36V – 250W
Supports up to 25km/h (to EN 15194)
Clutch with freewheel function
Gearbox: Planet gears
Integral sensor technology

Battery:
Cell type: Lithium-ion accumulator
Electricity: 340Wh, 36V, 9.3Ah
Charging cycles: 1000 cycles at 80% residual capacity
BMS (Battery Management System): protects against deep discharge and self-discharge Charge times: 80% after 2 hours, 100% after 3-4 hours (at room temperature)
Range: Up to 85km (depending on drive power and support mode selected)
Temperature range: -20°C to +60°C

Extremely small unit to connect battery (remains on bike) to normal mains network.
Intelligent electronics to prevent overcharging, undervolting, overheating and shortcircuit; in particular, sleep function prevents deep charging and necessity for recalibration with charger connected

Controller display functions:
Background lighting with light sensor system
Energy-saving automatic sleep mode
Diagnosis function with fault code display
Support modes: Economy, Comfort, Sport
Displays: Range, Battery capacity, Speed, Time, Distance, Maximum speed, Average speed, Total distance, Service reminder, System diagnosis, Support modes
iPhone Smartphone app control function planned

Bicycle Components:
Wheels: Mavic Elipse Aluminum black (modified with Ford Design crossing)
Tyres: Continental Ultra Sport black
Pedals: Wellgo LU-C27G, silver/black
Handlebars: Downhill Aluminum black, custom made
Stem: Giant SLR Carbon 110mm
Saddle: Selle Italia SLR XC
Brakes: Avid Elixir 5, full hydraulic, 185mm, white

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Monday, September 12, 2011

Brabus will present high-performance 4WD Full Electric [video]



Mercedes tuner Brabus is bringing a few cars to the Frankfurt motor show, but instead of fire-breathing, gas-drinking supercars, they're electric.

The company that brought us the 738-hp Brabus SL600 and the 788-hp Brabus S600 R is turning its considerable tuning powers to low-emission luxury cars--for now.

Brabus Zero Emission, the alternative-drive side of the Brabus business, will have two prototypes on display at the Frankfurt show. The first is a version of the European Mercedes E220 diesel called Technology Project Hybrid. It uses two electric motors at the wheel hubs to keep fuel economy up.

The second is an all-electric version of the sedan with four wheel-hub motors and 2,360 lb-ft of torque at the wheels.


The Technology Project Hybrid from Brabus has a direct-injection, 2.2-liter common-rail diesel engine with two supplemental hub motors from English manufacturer Protean Electric. Those motors produce 67 hp each in normal mode and 107 hp each when the sport button is pressed. Torque from the two hubs is rated at an astonishing 1,180 lb-ft, according to Brabus.

During electric cruising, the Mercedes is powered by an 18.6-kilowatt-hour lithium-ion battery pack. The company says that in eco mode the car can travel 75 miles with zero emissions. In sport mode, the vehicle can still go 50 miles. When both the engine and the electric motors are used, the car can go from 0 to 60 mph in just more than seven seconds. Drivers can also opt to cruise in standard diesel mode.

The system can recharge when coasting or braking, up to 140 kilowatts. For home charging, Brabus partnered with German energy provider RWE to create a 380-volt unit that can fill up the battery in 30 minutes, the company says. On a 220-volt outlet, it takes about 5.6 hours.

The extra weight of the car dictated an upgrade to the suspension. Brabus added a height-adjustable sport setup with variable dampers developed with Bilstein.

For the finishing touch, Brabus adds unique body panels, LED daytime running lights, sill plates and a new instrument cluster the displays all of the hybrid-related information.

The second car from the company will be a 320 kW (429-hp), 3,200 Nm all-electric vehicle based on the E-class sedan. It will come with a range of 217 miles, according to the company. The Brabus High Performance 4WD Full Electric will have four motors at the wheels making 80 kW and 800 Nm of torque each.

The fully electric E-class will be a heavyweight at 2,200 kg but will benefit from electric motors that provide 100 percent of torque at zero rpm. The sprint to 60 mph will take less than seven seconds, according to the company. But because of the wheel-hub motors' maximum speed of 2,000 rpm, top speed will be 137 mph.

There are benefits to putting motors at each of the wheels. Besides eliminating significant drivetrain loss, the all-wheel-drive system can disperse torque even more efficiently with the electric motors during slippery conditions and maximize brake regeneration.

Charging will take 1.5 hours with the 380-volt charger and about five hours with the 220-volt unit.

The cars are prototypes, so no prices have been announced yet. The company does say, however, that both could be put in to low-volume production in the future.

Source: Brabus

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