What's the formula for determining piston speed given stroke, compression ratio and RPMs?
04-22-2004, 06:18 AM
#3
Mean piston speed.....
MPS = (stroke * RPM)/6
where,
MPS is in feet per minute
stroke is in inches
On an S4 (and most Audi engines):
Stroke = 3.40 in
At 7000RPM:
MPS = 3966.7 ft/min = 66.1 ft/sec = 20.2 m/sec
where,
MPS is in feet per minute
stroke is in inches
On an S4 (and most Audi engines):
Stroke = 3.40 in
At 7000RPM:
MPS = 3966.7 ft/min = 66.1 ft/sec = 20.2 m/sec
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