Quote:
Originally Posted by NeilBlanchard
Hi,
An interesting variation on this was used in the Ducati SuperMono -- instead of using a fuel injector that sprays a mist; they used an injector that sprayed a single stream of gas, aimed right at the center top of the piston. The fuel hits the hot metal piston crown and vaporizes -- and it cools the top of the piston better than an oil mist on the backside.
The size of the piston/combustion chamber on this motorcycle required them to do this; and they ended up with a (counterbalanced) single cylinder engine that can rev up well over 10K RPM.
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This sounds interesting...I have read about water injection before but never really went anywhere with it. I imagine that this idea (liquid gasoline injection) would probably accomplish a similar goal, which is more advanced timing by reducing knock if I recall correctly.
Are most automobile injectors aimed toward the center of the piston though? Are there "stream" injectors that would fit in place of OEM injectors?