Nuts and Volts
18th November 2007
A couple of years ago, the Ansari X Prize was offered to encourage private development of space flight.
Recently, the organization that offered the Automotive X Prize was created to challenge inventors to create commercial vehicle that could get the equivalent of 100 miles to the gallon.
I am not an engineer but I have always been interested in technological forecasting. In a standard automobile, about 25% of the fuel is used to move the body, engine, drive train and fuel tank. About 74% of the energy is lost in the drive train and transmission. Only 1% of the fuel is used to move the passenger and cargo.
Here is my idea for a better passenger vehicle.
1. Build the body from advanced composites such as those being developed by Fiberforge. They are lighter than steel, can be recycled more easily and rebound better under impact.
2. Put the motors in the wheels. This eliminated the entire drive train including the transmission. These motors can also act as brakes and generate electricity to recharge the batteries while slowing the vehicle.
3. Use the latest in battery technology such as the new nano-electrode batteries that charge in 5 minutes, deliver more power in bursts and are much lighter than conventional batteries.
4. Leave a space with standard mountings for adding a small engine and fuel tank. This could be a light weight internal combustion engine made with ceramic materials, a Sterling steam engine, a fuel cell, etc. Because this engine is just used to charge the battery, it can be operated at maximum efficiency. This will help to extend the range and provide for circumstances where a connection to the grid for recharging is not available.
5. If all the operational components are mounted on a standard sized bed, then the body and passenger compartment could be easily customized leaving a lot of room for individual tastes.
It is estimated that the energy consumed by a car charged off the electrical grid costs about 20% as much as the energy consumed by a gas powered vehicle for the same number of miles traveled.
India recently announced a $3,000 mass production car and China followed with the announcement of a $2,500 mass production car. With 2 billion people looking for cheap cars in India and China, we HAVE to shift over to a cheap electric car as soon as possible or global warming will really kick into high gear. (Not to mention the threat of wars fought over dwindling oil supplies.)
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