Pendulum Absorber Design?
Pendulum Absorber Design?
(OP)
Is there any design criteria for building a pendulum torsional absorber, as far as pendulum weight and number of pendulums. I am working on a design for a 2.0ltr four cylinder.
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RE: Pendulum Absorber Design?
You might try and find some literature by Holtzer, who have been interested in wacky crankshaft absorbers for many years.
Cheers
Greg Locock
RE: Pendulum Absorber Design?
As I understand it, they cancel out torsional vibrations of a particular order across the rpm range, instead of responding to a particular frequency as others do.
These originated (I think) in aircraft radial engines since there is only one crankpin and they don't take up much room. They are still used in Continental 6 cylinder aircraft engines. There is also an aftermarket torsional damper that uses the principle. Adding them to an existing engine would be very difficult.
John Woodward