And to get a bit further afield... An excellent treatise on the entire issue can be found in Phillip K. Smith's book "The Scientific Design of Intake and Exhaust Systems." Or if one really wants to read the definitive text, one can find a copy of Ricardo's "The High Speed Internal Combustion Engine." Written in the late teens - early twenties and still the basis for ALL further research.
Jim Arnott WetWesties List Admin. Union, OR
Blue Eyes wrote: > > Mark wrote: > "One thing often not considered on four stroke engines, the > above it the > way to figure uncorrected compression ratios. The proper > 'corrected' > compression ratio would take into consideration how late the > valve closes > as the piston is rising on compression. The longer duration > the cam, the > lower the corrected compression ratio." > <snip> |
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