Quote:
Originally Posted by hotrod
Although I am interested in what is going on at the piston crown boundary layer in that video the other thing that caught my eye is how the flame kernel shoots to the top of the cylinder at over 70 mph by my calculations and them blooms out against the cylinder head with combustion then moving down back into the main combustion chamber volume from the top rather than from the center. I am curious if that flame kernal motion is driven by boyancy effects (rising like a hot air balloon) or by general mixture motion as the fuel air mix column is compressed by the piston. If the first case it would have interesting effects depending on engine layout with the flame kernal moving towards the high side of the combustion chamber. In a V8 and a flat opposed that means combustion would move down across the piston face from the intake side where on an inline vertical engine it would do as pictured above.
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Hey Larry,
Your comment here got me thinking about an odd engine design that I saw one time.
It's one of the late 60's Ferrari 312 motors. As you can see the exhaust is on the "inside" of the heads. So whether you are right or wrong in your thinking, maybe Ferrari (at least at one time) had the same idea?
Jeremy