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| I feel a project coming on, maybe too daft? |
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| DMIOM:
--- Quote from: John Hill on December 13, 2011, 07:22:59 PM ---..... Cooling, what do you think of the idea of wrapping the cylinders in cotton rope and using capilary action to keep it wet from a water resevoir? The cooling would come from evaporation, it might be tricky to arrange the cotton covering for the head. --- End quote --- interesting idea, cooling would increase with RPM/speed; but might be somewhat variable depending on the temperature & humidity (and beware a muddy puddle that caked them in mud!) - and you'd probably need to impregnate them with Proban or similar beforehand ... Dave |
| BillTodd:
--- Quote ---Cooling, what do you think of the idea of wrapping the cylinders in cotton rope and using capilary action to keep it wet from a water resevoir? --- End quote --- No no, cooling the cylinder on the outside will only reduce the internal pressure (which is very important for your slow rev'ing engine). However, if you could cool the cylinder walls & piston from the inside but without cooling the gas too much ( a tall order but...) then the liberated steam could be made to do useful work. Perhaps your capillary action device but inside, wrapped around the piston, cooling the cylinder walls by wiping them with water ???? :ddb: Bill |
| John Hill:
--- Quote from: BillTodd on December 14, 2011, 09:55:27 AM --- However, if you could cool the cylinder walls & piston from the inside but without cooling the gas too much ( a tall order but...) then the liberated steam could be made to do useful work. Perhaps your capillary action device but inside, wrapped around the piston, cooling the cylinder walls by wiping them with water ???? :ddb: Bill --- End quote --- Alcohol water mix for fuel? Water injection? Water mist injected in the induction tract? CCV(?) Suzuki two stroke cars had oil fed directly to the piston via a port in the cylinder wall, how about water instead of oil? |
| BillTodd:
--- Quote ---Water mist injected in the induction tract? --- End quote --- Trouble with a general mist is that it'll cool the combustion gases which is not what you want. What is required, is to keep the gas hot while keeping the metal parts to a workable temperature and to make use some of the otherwise wasted heat. Bill |
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