Why can`t we do this - anyone care to comment

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Offline rayhelm

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Why can`t we do this - anyone care to comment
« on: 09/12/2007 11:39:38 »
In my continuing quest to save the planet from global warming, please consider the following.

Combustion engines, universally used but not very environmentally friendly. Now considering that a combustion engine (such as in a car) is also a reciprocating engine why can`t we change the impulse force to something non polluting.

I had the thought that the impulse does not have to be an exploding or expanding gas, what about electromagnetic repulsion.

Position a fixed electromagnet where the spark plug or ignition coil would be and another forming the piston, fire them both at the top of the piston cycle and the repulsive force should force the piston down with sufficient force to complete a cycle.

This is not the famed perpetual motion machine as it would require electric current to operate but if this was feasible I feel it would be a better alternaive to all those green house gas emissions

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Offline Pumblechook

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Why can`t we do this - anyone care to comment
« Reply #1 on: 09/12/2007 12:07:05 »
errrr


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Offline Bored chemist

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Why can`t we do this - anyone care to comment
« Reply #3 on: 09/12/2007 12:59:22 »
"if this was feasible I feel it would be a better alternaive to all those green house gas emissions"
And, since it's not feasible, it isn't an alternative.
Please disregard all previous signatures.

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another_someone

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Why can`t we do this - anyone care to comment
« Reply #4 on: 09/12/2007 13:19:34 »
In my continuing quest to save the planet from global warming, please consider the following.

Combustion engines, universally used but not very environmentally friendly. Now considering that a combustion engine (such as in a car) is also a reciprocating engine why can`t we change the impulse force to something non polluting.

I had the thought that the impulse does not have to be an exploding or expanding gas, what about electromagnetic repulsion.

Position a fixed electromagnet where the spark plug or ignition coil would be and another forming the piston, fire them both at the top of the piston cycle and the repulsive force should force the piston down with sufficient force to complete a cycle.

This is not the famed perpetual motion machine as it would require electric current to operate but if this was feasible I feel it would be a better alternaive to all those green house gas emissions

Sounds to me that what you are describing is a poorly designed electric car.  We have better designs of electric car, but you still need to generate the electricity somewhere.


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Offline Pumblechook

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Why can`t we do this - anyone care to comment
« Reply #6 on: 09/12/2007 17:56:06 »
Electric motors are simple and efficient.  I can't imagine a reciprocating electric engine being either of those things.   


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another_someone

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Why can`t we do this - anyone care to comment
« Reply #7 on: 09/12/2007 18:34:05 »
Electric motors are simple and efficient.  I can't imagine a reciprocating electric engine being either of those things.   

It depends on what you are trying to do.

You can make efficient reciprocating electric motors, the problem here is that you are trying to convert reciprocating action to rotary action, and that conversion will carry frictional losses.

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lyner

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Why can`t we do this - anyone care to comment
« Reply #8 on: 11/12/2007 18:19:59 »
Why not go the whole hog and use linear motors?
And throw in some maglev. Magic.