Tuesday, August 4, 2009

Velas de ignição laser pq não?

O LASER não deixa de me surpreender na miríade de aplicações em que tem vindo a ser utilizado. Hoje descobri mais uma que aparentemente está a ser estudada há mt tempo mas eu desconhecia - como substituto das velas convencionais de ignição.


"Internal-combustion engines have been undergoing improvement for more than a century. In the design of gasoline engines, fuel-ignition techniques remain an area of concentration for development engineers. Ignition is ­traditionally performed by electrical spark plugs that require high voltage and careful insulation. But spark plugs erode with use, and because they must remain at the edge of the combustion chamber, they offer only limited possibilities for optimizing engine efficiency and reducing noxious emissions.

In response, some laboratories have pursued the use of focused laser radiation for ignition.1 Radiation can be focused anywhere within the combustion chamber so that an optimal ignition point can be found for the unobstructed expansion of the flame front. Even multipoint ignition can be implemented. Laser ignition of very lean fuel mixtures has been demonstrated.2 In principle, laser ignition offers further parameters for optimization such as wavelength, pulse energy, and pulse shape and duration." - Fonte




Parece-me uma idéia mt interessante e com diversos tópicos para optimização.

Esperemos que haja bastante desenvolvimento nesta área pois, sendo um pouco interesseiro, é a minha :-D

Abração!!
I.

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