Sunday, November 27, 2005

Electric Mitsubishi Lancer EVO

2005 Mitsubishi Lancer Evolution MIEV Electric Concept
Mitsubishi Press Release

MIEVMIEV - a proposal for next-generation electric vehicles that utilizes to maximum effect the environmental technology Mitsubishi Motors has developed over the years. The offspring of a marriage between such environmental technology and Mitsubishi Motors' sporty characteristics, Lancer Evolution MIEV delivers a totally new experience in driving pleasure.

Lancer Evolution MIEV derives from the Lancer Evolution IX. Utilizing the advantages offered by the electric powertrain to craft smooth and slippery, low-drag body lines, the styling imparts an aggressive wind-cleaving look to the body. Riding on large wheels and tires, Lancer Evolution MIEV projects a tempting taste of its potent new-age sport driving potential.

The wheels are driven by four outer-rotor in-wheel motors. Requiring no speed reducer, these high-efficiency direct drive motors fit neatly into the 20-inch wheels. Each in-wheel motor produces 50 kW of power and 518 Nm torque. With a motor in each wheel, this brings maximum output up to 200 kW (270 PS). And because this drive system allows precise regulation of power at each individual wheel, it opens the door to creating a vehicle dynamics control system in its ultimate evolutionary form — one that could be dubbed Super All Wheel Control (S-AWC).

The in-wheel motors and the lithium-ion battery system, which is located under the floor to reduce the center of gravity, accelerate Lancer Evolution MIEV from 0 km/h to 100 km/h in less than 8 seconds and up to a maximum speed of 180 km/h. This is a level of motive performance that leaves today's EV's standing.

In-Wheel Motor
The foremost feature of the in-wheel motor is that it allows drive torque and braking force to be regulated with high precision on an individual wheel basis without requiring transmission, drive shafts, differential gears or other complex and heavy components. Housing the drive system in the wheels also gives greater freedom in designing the layout. This will facilitate the conversion of internal combustion engine-powered vehicles into hybrid vehicles without requiring the introduction of complex hybrid power systems. It will also make it easier to provide room for space-consuming components such as fuel cell stacks and hydrogen tanks in fuel cell vehicles. The space-saving benefits of the in-wheel motor also offer exciting possibilities in terms of body design.

MIEV Wheel Motor

Lithium-Ion Battery
The major shortcoming of the EV to date has been its limited cruising range. This is now well on the way to being overcome with recent improvements in battery performance. MIEV uses a lithium-ion storage cell for its main power source, this offers advantages in terms of energy density and life over other types of secondary or rechargeable battery.

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