Smallest Petrol Engine

Shilpa Apr 11, 2006

SCIENTISTS have built the smallest petrol engine - tiny enough to power a WATCH. The mini-motor, which runs for two years on a single squirt of lighter fuel, is set to revolutionise world technology.

It produces 700 times more energy than a conventional battery despite being less than a centimetre long - not even half an inch. It could be used to operate laptops and mobile phones for months on end - doing away with the need for recharging.

Experts believe it could be phasing out batteries in such items within just six years.
The engine, minute enough to be balanced on a fingertip, has been produced by engineers at the University of Birmingham. Dr Kyle Jiang, lead investigator from the Department of Mechanical Engineering, said: "We are looking at an industrial revolution happening in peoples' pockets.

"The breakthrough is an enormous step forward. Devices which need re- charging or new batteries are a problem but in six years will be a thing of the past."

Other applications for the engine could include medical and military uses, such as running heart pacemakers or mini reconnaissance robots. At present, charging an ordinary battery to deliver one unit of energy involves putting 2,000 units into it.

The little engine, because energy is produced locally, is far more effective. One of the main problems faced by engineers who have tried to produce micro motors in the past has been the levels of heat produced. The engines got so hot they burned themselves out and could not be re-used. The Birmingham team overcame this by using heat-resistant materials such as ceramic and silicon carbide.

Professor Graham Davies, head of the university's engineering school, said: "We've brought together all the engineering disciplines, both materials, chemical engineering, civil engineering, and mechanical engineering. "What better place to have the second industrial revolution - in nano-technology - than where the first took place, in the heart of the West Midlands."

(6) Comments

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  3. Guest Jan 28, 2011

    To be used to power heart pacemakers? I suppose the exhaust would be through the nose, or perhaps the anus? Come on, pull the other one.

  4. Guest Feb 23, 2011

    Tom,
    LOL! That' what I was wondering, too. Where does the exhaust exit?

  5. Guest Mar 18, 2011

    what happens if it backfires, would you implode

  6. Guest Apr 17, 2011

    One of the important problems visaged by engineers who change proved to exhibit micro motors in the ancient has been the levels of warmth produced. The engines got so hot they burned themselves out and could not be re-used.
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