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CityCar : Ultra-small all-electric future generati...

CityCar : Ultra-small all-electric future generation car

The CityCar or MIT CityCar is an urban all-electric concept car designed at the Massachusetts Institute of Technology Media Lab.

The CityCar weighs less than 1,000 pounds (450 kg), is 60% the size of a Smart Car, and its lithium-ion battery pack is expected to deliver the equivalent of 150 to 200 mpg-us (1.2 to 1.6 L/100 km; 180 to 240 mpg-imp) with no tailpipe emissions.Time Magazine selected the CityCar as one of the "Best Inventions of 2007".

The CityCar is a foldable, electric, sharable, two-passenger vehicle for crowded cities. Wheel Robots—fully modular in-wheel electric motors—integrate drive motors, suspension, braking, and steering inside the hub-space of the wheel. This drive-by-wire system requires only data, power, and mechanical connection to the chassis.

With over 80 degrees of steering freedom, Wheel Robots enable a zero-turn radius; they also enable the CityCar to fold by eliminating the gasoline-powered engine and drive-train.

The CityCar is designed for front entry, which is feasible because there is no engine in the way. Baggage and emergency entry and exit are at the rear, and there is no side entry and exit. This configuration allows nose-in parking to the curb, and passenger embarkation from the sidewalk rather than from the road, which allows the elimination of the need for side clearance between parked vehicles. It also simplifies the vehicle, which does not need to accommodate door openings.

The CityCar will be driven with a joystick or optionally an electronic steering wheel. The prototype is 2.5 metres (8 ft 2 in) long and folds to 1.5 metres (4 ft 11 in) when parked, and weighs less than 1,000 pounds (450 kg). The top speed is 50 kilometres per hour (31 mph) and to which it can accelerate from rest in 3 seconds. The all-electric range is 120 kilometres (75 mi). The lithium-ion battery pack is located in the floor and can be recharged in 12 minutes. The electric car will be capable of climbing grades up to 20 percent.

The CityCar concept was developed as the cleanest, economical and sustainable solution to meet the demand for personal urban mobility in densely populated cities, and was designed for cities as opposed to the conventional automobile.


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