Apparatus for absorbing torque fluctuations produced by an internal combustion engine
First Claim
1. An apparatus capable of being disposed between an internal combustion engine and a drive train mechanism, and adapted for use as a damped vibration system in absorption of a fluctuating torque present in an output torque produced by the engine, comprising:
- a plurality of rotationally inert bodies arranged on a common axis of rotation facing each other with a small gap therebetween, an outermost one of said inert bodies being connectable to a crank-shaft of said engine and the other outermost one of said inert bodies being connectable to said drive train mechanism,spring elements provided between the facing inert bodies and displaceable circumferentially with respect to the axis of rotation, each of the elements having one end thereof connected to one of said facing inert bodies and the other end thereof connected to another of said facing inert bodies, anddamping elements provided between said facing inert bodies, each of the damping elements having engagement with two adjacent bodies of said facing inert bodies, the values of the moment of inertia, spring constant, and damping coefficient of the system being preselected for averaging the torque output of the engine.
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Abstract
A damped vibration system includes a plurality of rotationally inert bodies arranged on a common axis of rotation facing each other with a small gap therebetween. Spring elements are provided between the facing bodies that are displaceable circumferentially with respect to the axis of rotation. Damping elements, preferably in the form of steel balls disposed in radial or circular grooves having sufficient clearance to permit relative angular movement between the facing inert bodies, are provided between the facing bodies. The apparatus is directly connectable to the crank-shaft of the internal combustion engine and also engageable with the drive train of a vehicle. The damped vibration system has a resonant angular frequency preselected to be a certain value below the angular frequency of ignition of the internal combustion engine.
41 Citations
14 Claims
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1. An apparatus capable of being disposed between an internal combustion engine and a drive train mechanism, and adapted for use as a damped vibration system in absorption of a fluctuating torque present in an output torque produced by the engine, comprising:
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a plurality of rotationally inert bodies arranged on a common axis of rotation facing each other with a small gap therebetween, an outermost one of said inert bodies being connectable to a crank-shaft of said engine and the other outermost one of said inert bodies being connectable to said drive train mechanism, spring elements provided between the facing inert bodies and displaceable circumferentially with respect to the axis of rotation, each of the elements having one end thereof connected to one of said facing inert bodies and the other end thereof connected to another of said facing inert bodies, and damping elements provided between said facing inert bodies, each of the damping elements having engagement with two adjacent bodies of said facing inert bodies, the values of the moment of inertia, spring constant, and damping coefficient of the system being preselected for averaging the torque output of the engine. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification