KAWASAKI- Exciting Shimizu In Motor Wheel-Drive (SIM-Drive Corp) which is a authorized company based in Kawasaki, Japan, in late March declared that it successfully manufactured a four-seat electric car called "SIM-LEI ".
The advantages of this car, once the contents of the powerful battery, it can be used to cover a distance of 333 km with a test mode JC-08. When accelerated at a constant speed of 100 km / h, then the distance traveled by the battery capacity of 24.4 kWh (same as that used electric cars today) only 305 km. This car is planned to be launched in 2013.
The technology is offered on the actual car is also designed for 8-wheel vehicle is using electric motor directly attached to the wheel. Actually, Professor Shimizu concept is not new. Michelin has also been showing off this technology. However, the reality is as yet there are companies that use them.
Electric car with the installation of electric motors directly on the wheels of late become a debate for the automotive experts. Because the electric motors in the wheels affects the work and brakes. The workload will increase in both components.
Nevertheless, the electric car developed by professor Hiroshi Shimizu, a professor of Keio University as well as President Director and CEO of SIM-Drive Corp., uses the concept of the motor opposite to that of today. In an electric car with a length of 4700 mm, width 1600 mm and 1550 mm height, and weight is 1650 kg, rotornya outside.
As an illustration, at current electric motor, the rotor (rotating part) are on the inside. As for the SIM, outside the rotor and stator (stationary part) are on the inside.
Actually in 2004, Hiroshi Shimizu has also introduced an electric car that is named Eliica. The concept, the electric motor mounted directly on wheels and equipped with a gear reduction. Now, with the rotor on the outside, no need to use the gear reduction. Added, the torque produced is also growing larger.
Consumption of electric cars that use alternating electric current is 77 watt-jam/km is equivalent to 70 km / liter of gasoline. SIM claims that this car can sprint from 0-100 km / h in 4.8 seconds and maximum speed 150 km / hour.
SIM-LEI using monokok chassis with "components together in order to" hollow that is used to place the batteries, inverters, and so forth. Further, the car developed since January 2010 and supported by 34 companies, including automakers and parts manufacturer in Japan. Two of the producers who helped this development is the Isuzu and Mitsubishi.