Friday, May 24, 2013

Technology for Ecology



The global automotive industry comes slowly in a lean period and almost all manufacturers are affected except perhaps to a lesser extent manufacturers very expensive sports cars and luxury that manage to get a little better their cards Thurs The causes of this stagnation are manifold, oil prices, purchasing power, and law enforcement drastic, ecology, and so on ....

All major groups are involved and if the general trend is to make more economical and environmentally friendly cars to restore the urge to buy, it is clear that the solutions may be different. Some advocate the use of bioethanol such as Brazil. Japanese like Toyota or Honda follow the path of hybrid engines (gasoline and electricity). European manufacturers for their preferred solution removing the camshafts that control the valve opening because we know that the valves depends on the filling of cylinders. Hence the idea of valves controlled individually by a computer rather than a camshaft which would allow better management appropriate to the circumstances, promising up to twenty percent savings ....

Three technologies selective activation of the valves are in the study and therefore in competition, it's called the " camless engines . " The French Valéo working on a electromagnetic system or the valves are controlled by electromagnets. In Wolkswagen an electrical system consisting of small individual electric motors that control valves are studied. Italy Fiat preferred hydraulic system with oil under pressure and the solenoid valves for each valve. It is a cultural revolution as it takes to digest the many fans of beautiful mechanical that they no longer have an engine with double overhead cam head under the hood but camless, it will cry in the cottages ... .



Of course only a few hybrids are in circulation as to what is camless engines there is yet at the stage of study and prototype. In fact these future engines are expected between 2012 and 2015 because the challenge we face is very sharp, imagine that 6000 revolutions per minute the valves open and close 50 times per second, it makes you wonder about the accuracy diabolical management to get for seamless operation ....

 

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