METHOD AND APPARATUS FOR CONTROLLING A SELECTABLE ONE-WAY CLUTCH IN AN ELECTRO-MECHANICAL TRANSMISSION
First Claim
Patent Images
1. A clutch assembly configured to transfer torque in a transmission, comprising:
- a selectable one-way clutch comprising a strut plate co-annular to a slide plate and a notch plate;
the strut plate including a pass-through slot portion and an annular race;
the slide plate configured to slidably move in the annular race of the strut plate and including a pin fixedly connected to and projecting from the slide plate configured to pass through the slot portion of the strut plate, wherein the slidable movement of the slide plate is limited by the pin and the slot portion of the strut plate;
a displacement actuator fixedly connected to the strut plate and configured to selectively move the pin and the slide plate to one of a first position and a second position;
the selectable one-way clutch configured to transfer torque between the strut plate and the notch plate in a first direction when the pin and the slide plate are in the first position; and
the selectable one-way clutch configured to disengage the strut plate from the notch plate when the pin and the slide plate are in the second position.
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Abstract
A selectable one-way clutch includes a strut plate co-annular to a slide plate and a notch plate. The selectable one-way clutch is configured to transfer torque between a strut plate and a notch plate in a first direction when a displacement actuator moves a pin and a slide plate to a first position. The selectable one-way clutch is configured to disengage the strut plate from the notch plate when the displacement actuator moves the pin and the slide plate to the second position.
93 Citations
13 Claims
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1. A clutch assembly configured to transfer torque in a transmission, comprising:
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a selectable one-way clutch comprising a strut plate co-annular to a slide plate and a notch plate; the strut plate including a pass-through slot portion and an annular race; the slide plate configured to slidably move in the annular race of the strut plate and including a pin fixedly connected to and projecting from the slide plate configured to pass through the slot portion of the strut plate, wherein the slidable movement of the slide plate is limited by the pin and the slot portion of the strut plate; a displacement actuator fixedly connected to the strut plate and configured to selectively move the pin and the slide plate to one of a first position and a second position; the selectable one-way clutch configured to transfer torque between the strut plate and the notch plate in a first direction when the pin and the slide plate are in the first position; and the selectable one-way clutch configured to disengage the strut plate from the notch plate when the pin and the slide plate are in the second position. - View Dependent Claims (2, 3, 4)
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5. A clutch assembly configured to transfer torque in a transmission, comprising:
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an annular strut plate co-annular to a slide plate and a notch plate; the strut plate including a pass-through slot portion, an annular race, and a plurality of circumferentially-located retractable struts; the notch plate including a plurality of circumferentially-disposed notches located co-annular to the retractable struts of the strut plate; the slide plate configured to slidably move in the annular race of the strut plate and including a pin projecting from a surface of the slide plate configured to pass through the slot portion of the strut plate, wherein the slidable movement of the slide plate is limited by the pin and the slot portion of the strut plate; the slide plate including a plurality of pass-through notch openings corresponding to the retractable struts and the strut plate; a linear actuator having a moveable plunger projecting substantially tangential to the annular race wherein a distal end of the moveable plunger comprises a yoke device configured to engage the pin of the slide plate, the linear actuator controllable to move the yoke device to one of a first position and a second position; and the retractable struts configured to engage the co-annular notches of the notch plate when the yoke device is in the first position and the retractable struts configured to retract within the strut plate and disengage the co-annular notches of the notch plate when the yoke device is in the second position.
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6. Transmission configured to transfer power between an input member, first and second torque machines and an output member, comprising:
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a transmission case; a differential gear set; first and second torque transfer clutches; a first torque machine rotatably operatively couplable to a first element of the differential gear set when the second torque transfer clutch is in an applied state; a second torque machine rotatably operatively coupled to a second element of the differential gear set; the first torque transfer clutch configured to ground a third element of the differential gear set to the transmission case when in an applied state; the differential gear set configured to transfer torque between the first torque machine and the output member in a first continuously variable mode when the first torque transfer clutch is in the applied state; and the differential gear set configured to transfer torque between the first and second torque machines and the output member in a second continuously variable mode when the second torque transfer clutch is in the applied state; the first and second torque transfer clutches comprising frictionless engagement clutches each selectively operative in an open state and selectively operative in an applied state; the first torque transfer clutch configured to transition between the open state and the applied state only when rotational speed of the third element of the differential gear set is substantially zero; and the second torque transfer clutch configured to transition between the open state and the applied state only when rotational speed of the first torque machine is substantially synchronized with the rotational speed of the first element of the differential gear set. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13)
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Specification