Quote:
Originally Posted by pgfpro
...I'm looking into different piston coatings. What I have is in the middle of my pistons an added conductor device that directs the flame to the outer perimeter of the pistons. So, a spray guided piston type. The design of this is very critical and needs to stay extremely clean. My concerns are with a coating it might change the dynamics of staying clean and could alter the performance. The only way to test it is to coat the pistons and see what happens. Thanks for your comments much appreciated.
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Ah...
So you want to:
- Remove the earth electrode off of a std plug.
- Coat the piston top with an electrical insulator.
- Then have a (insulated) conductor stuck to the insulating layer, that starts with a little point in the center of the piston for the plug to spark to, then conducts outward to the piston periphery and sparks back to the head through the squish area?
If so; I assume your piston-top conductor goes to the area with the most squish area?
Clever way to get twin sparks.
IF, as you say, you can get all the gaps (to stay) right and keep things clean enough.
I worry that:
- The insulated conductive path on the piston top will accumulate too much temperature and cause pre-ignition.
- (heavy) Spark plug ceramic may work, but just how thick of a layer can one get to stick to a piston top and said conductor reliably?
Pistons accelerate/decelerate at one hell of a rate!
I worked the numbers out once while 'patenting' (stupid of me I now know) a 2-stroke type sump, with reed valves, acting as a supercharger for a 4-stroke engine... (light and compact)
I wanted to put one-way (intake) valves in the piston tops somehow, so you could have 4 exhaust valves per piston in the head and all the possibilities that go with that.
Anyway;
I do recall the 'weights' of the various 'piston top valve' contraptions I came up with being astronomical!..?
Another question:
You aren't running a std ignition (coils) system are you?
There are capacitors and diodes and 'base volts' in all the right places aren't there!?
