Knowing piston speed based on rod ratio and rpm?
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Donnie1126
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Knowing piston speed based on rod ratio and rpm?
Using any rod ratio what is the best way to figure piston speed from 0 to 90 degrees at any rpm?
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Greenlight
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Piston Velocity
The mean piston velocity is:
Vmean = 2 x L x N
where
L = stroke
N = rotational speed of the crankshaft
The instantaneous piston velocity is:
Vi = Vmean x p/2 x sin q x [ 1 + ( cos q / ( R^2 - sin^2 q )^1/2 ) ]
where
p = PI or 3.14159
q = the crank angle relative to TDC
R = the ratio of the rod length to the crank radius
Vmean = 2 x L x N
where
L = stroke
N = rotational speed of the crankshaft
The instantaneous piston velocity is:
Vi = Vmean x p/2 x sin q x [ 1 + ( cos q / ( R^2 - sin^2 q )^1/2 ) ]
where
p = PI or 3.14159
q = the crank angle relative to TDC
R = the ratio of the rod length to the crank radius
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