A Special Type of Crank Mechanism With Variable Stroke

[+] Author and Article Information
Giovanni Mimmi

Dipartimento di Meccanica Strutturale, Università degli studi di Pavia, Via Ferrata, 1, I-27100 Pavia, Italy e-mail: mimmi@unipv.it

Paolo Pennacchi

Dipartimento di Meccanica, Politecnico di Milano, Via La Masa, 34, I-20158 Milano, Italy e-mail: paolo.pennacchi@polimi.it

J. Mech. Des 123(3), 468-472 (Oct 01, 1999) (5 pages) doi:10.1115/1.1376397 History: Received October 01, 1999
Copyright © 2001 by ASME
Topics: Pistons , Motion
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Cambiaghi,  D., and Mimmi,  G., 1981, “Studio di una Pompa Volumetrica Alternativa a Portata Variabile,” Organi di trasmissione, No. 5.
Beyer, R., 1963, Kinematics Synthesis of Mechanisms, Chapman-Hall.
Hein, K., 1967, Applied Kinematics, McGraw-Hill.
Chironis, N. P., 1965, Mechanisms, Linkages and Mechanical Controls, McGraw-Hill.


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3D representation of the studied mechanism
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Kinematic scheme of the mechanism
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Piston D position as function of the drive shaft rotation angle and of the variable distance d
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Piston stroke as a function of the adjustable distance ratio τd/a
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Rods position when t≈0
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Rods position when ωt≈π
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Piston displacement extreme position set
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Desired and actual piston displacement
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Piston displacement versus shaft rotation and τd/a
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Piston displacements for two values of the adjustable distance d
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Velocity of piston D versus shaft rotation
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Acceleration of piston D versus shaft rotation



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