5 Series sedan, BMW Exhaust Heat Becoming Change Electricity

As many as two-thirds of the waste in the form of heat through the exhaust and radiator. wasted heat energy that wants to use.
Hot start
The first idea is to start the car manufacturers experts based in Munich is no longer distart engine is cold. Thus, the move could reduce fuel consumption and emissions. For that, the engine was covered, like a thermos so that the temperature is maintained.

All the machines covered or fitted with heat insulation. Thus, the engine will stay hot when turned on again. Materials for insulation is not expensive, which is similar to that used for the floor.

After contact OFF or turned off the engine, the temperature remains 40 degrees Celsius after 12 hours. Every degrees Celsius above the ambient temperature around the engine will mengirit fuel consumption to 0.2 percent.

"Thermoelectric"
The second approach to change exhaust heat into electricity. The experts claim, this could mengirit fuel consumption by 2 percent. To that end, BMW uses the principle of thermoelectric generators have already been shown last year.

Further development is to use an integrated component in the cooling exhaust gas recirculation (egr). This method can produce 250 watts of electricity when the car was driven at normal conditions. According BMWs, big energy equal to half the electrical energy required 5-Series sedans today equipped with various electrical and electronic equipment.

Thus, they use the element thermoelectric semi-conductors to produce electricity. The greater the temperature difference, the greater the high voltage generated.

Exhaust temperature typically ranges between 300 and 900 degrees Celsius. This section is used as the hot side of the generator, while the cold is the engine coolant.

Described, 3 to 8 percent of all fuel consumed by cars of today are used to operate equipment that requires electrical energy. Therefore, this method is very pontensial assessed in mengirit fuel.

The third version uses the waste heat from the radiator to knapot or channeled to the interior of the heater. However, this method can only be used in cold climates or in winter.

Traffic Management
Heat engines can also be used to reduce friction. That is, the machine is set to work at the appropriate working temperature. For example, transmission. This tool is used for heat exchanger (heat exchanger) that could heat up quickly transmission normal working temperature.

In fact, according to BMW, they also have the possibility of using aerodynamic system that can be set to prevent the heat energy wasted. Other efforts are now in use-is the regenerative braking system (like KERS).

In fact, traffic management with the help of satellites, according to BMW, can help reduce fuel consumption while reducing emissions. By controlling the satellite, acceleration and braking can be done smoothly.

Apparently, a navigation system not only to avoid bottlenecks and waste a lot of energy spent in vain, but also to reduce pollution in large cities.