Multi-function centrifugal clutch
First Claim
Patent Images
1. An automatic clutch assembly comprising:
- a plurality of centrifugal weights movable radially in response to rotation; and
a reaction surface cooperating with said plurality of centrifugal weights causing clutch actuation according to a non-linear relationship between torque transfer and rotational speed, wherein said reaction surface comprises a plate movable axially responsive to radial movement of said plurality of centrifugal weights that moves axially toward an engaged position at a first rotational speed, and axially toward a release position at a second rotational speed greater than said first rotational speed.
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Abstract
A clutch assembly includes a reaction surface that provides several disengagement surfaces that cause axial movement of a front plate to reduce torque transmission at rotational speeds above an engagement speed. The disengagement surfaces reduce torque to break torque lock at rotational speeds corresponding to desired gear changes. The clutch assembly is controlled to tailor the relationship between clutch torque and engine speed to current vehicle operating conditions to provide consistent vehicle performance over different operating conditions.
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Citations
10 Claims
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1. An automatic clutch assembly comprising:
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a plurality of centrifugal weights movable radially in response to rotation; and a reaction surface cooperating with said plurality of centrifugal weights causing clutch actuation according to a non-linear relationship between torque transfer and rotational speed, wherein said reaction surface comprises a plate movable axially responsive to radial movement of said plurality of centrifugal weights that moves axially toward an engaged position at a first rotational speed, and axially toward a release position at a second rotational speed greater than said first rotational speed. - View Dependent Claims (2, 3, 4, 5)
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6. An automatic clutch assembly comprising:
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a plurality of centrifugal weights movable radially in response to rotation; a pressure plate movable axially responsive to radial movement of said plurality of centrifugal weights; and a reaction surface including at least one engagement surface causing an increase in torque transfer and at least one disengagement surface causing a reduction in torque transfer, wherein said at least one disengagement surface is radially outboard of said at least one engagement surface. - View Dependent Claims (7, 8, 9, 10)
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Specification