Quote:
Originally Posted by Frank Lee
Seems like excess complexity to me, especially for a critical component that has many harsh demands placed upon it.
Consider how such a part would wear too.
I've read about spring-loaded detonation dampers located in the cylinder head which would be orders of magnitude simpler.
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Interesting, I could not find it, but I found the below. Uses air/gas and oil for "shock abortion" (
spring-like) and increasing chamber size (
more power).
Detonation control device for an internal combustion engine
https://www.google.ch/patents/US5063883
Quote:
The fixed geometry of combustion chamber 16 causes very rapid pressure rise from 2.5° B.T.D.C. to 5° A.T.D.C. by the squish chamber 16-A in combination with the rapid response of piston 11 and without the use of such, curve 3-A would follow curve 2 to where the first response of piston 11 takes place, then curve to the right in much the same manner as indicated by curve 6. Therefore a considerable gain is made from using the squished chamber.
The valve 30 is preset to release near the detonation limit of engine 5. When the pressure of combustion chamber 16 exceeds the predicted detonation pressure, valve 30 will bypass the oil medium 47 in part, thus allowing piston 11 to move further within cylinder 11-A. This enlarges the fixed combustion chamber until oil can be replaced to cylinder 13 by way of line 27. The time required to replace oil 47 would be determined by the pressure within line 27 and the diameter of the line 27 or an orifice leading to cylinder 13.
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