The rapid development of electronic systems in automotive vehicles has been driven for decades by constantly growing requirements of legislation for environmental protection, as well as rising demands of the end-user to improve fuel economy, safety, driving comfort and driving excitement. The manufacturers of mobile work machines also see themselves increasingly confronted with these requirements. Can Robert Bosch GmbH use the technical experiences from automobiles also in this area to efficiently develop high-quality electronic systems.
The word automobile is made up of two words I,e.auto and mobile. Auto is self propelled and mobile is vechicles and meaning of these two words is “self propelled vechile”. Now a days the Indian automobile market in world is in second rank. First the technology gap are being briged not only between India and world but also the present and future. Almost every player is introducing new engines which are smaller but powerful,lighyer but efficient.
Improve engine efficiency
- The modern gasoline engine is nearing its peak efficiency, only small gains can be made by enhanced combustion and variable camshaft timing.
- The diesel cycle engine may once again take over as the engine of choice.
- A small turbodiesel / electric hybrid with a CVT and regenerative braking provides the most benefit, 40% to 80% gain.
- Rolling resistance
- Changing to tall and thin tires for reduced rolling resistance can add another 2 to 4% gain.
- Mounted to Carbonfiber and magnesium wheels for low weight, another 2% gain.
- Reducing vehicle load
- The passive use of electronics provide multiple benefits:
- Flat body panels can be constructed of photovoltaic materials to recharge the batteries and provide electricity to load devices.
- This can provide up to 5 to 10% gain.
- Electronics can also be used for:
- Brakes
- Steering
- Temperature control (heat pump)
- Engine support (coolant circulation
CONCLUSIONS
On-road fuel economy is improving in Japan and Europe, but hardly at all in the US, at least through 2006. Fuel economy (miles/gallon) is higher in Europe and to some extent Japan than in the U.S. In 2005, on-road fuel economy in the U.S. was slightly above 11 l/100 km (above 21mpg. Japan’s average was 10.5 km/100 km (22 mpg), while Germany, the U.K. and France were 8 (29), 7.7 (31) and 7.5 (32) respectively. These real world” on-road figures include diesel and other fuels. For the US, the figure includes the portion of light trucks that are household vehicles, such as SUVs, all of which are far less significant in countries.
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