Ambitious newby

[mocha]

A combustion chamber at each end of the cylinder eh? :-)

Turbo charger direct drive on start up and clutch disengages once EGT reaches working temperature?

Scotch yolk?

Looks rather like a modified 'Bourke' engine...


Hmm... interesting.

[Robin Hewitt]

A combustion chamber at each end of the cylinder eh? :-)

I think the inside chamber is to compress the air that will recharge the outside chamber. He can't use the crank case to do the 'blow' in the usual fashion.

I notice people making multi-cylinder steam engines using a swash plate to get the reciprocation, wonder if you could combine the two ideas... If you made the lower cylinders larger than the combustion chambers you could get a good flush.

Right now the design looks totally naff, but can't we assume it's just a short stroked, simplified drawing to explain the cycle? Even us low IQ types with large penises can see it doesn't have a lot of hope.

[blackburn mark]

i assumed expansion chambers would do all the work and "suck" the next charge in

[Robin Hewitt]

i assumed expansion chambers would do all the work and "suck" the next charge in

Did you miss the 2 stroke part? There is no suck unless you do something really clever with the exhaust pipe geometry.

To pep up a 2 stroke you put a clack valve between the carburettor and the air inlet, it stops it blowing back through the carb when the piston starts it's down stroke. (They call them "reed valves" but they are really clacks).

A turbo charged 2 stroke is interesting. Of course you can't increase the cylinder pressure because the exhaust valve is still open when the inlet cracks, but 2 stroke power is all about flushing the exhaust from the cylinder. With fuel injection you wouldn't be blowing unburnt fuel down the exhaust if you over-cooked it.

OTOH what do beer swilling morons like me know about designing engines?