Transmission internal PTO clutch and method of control
First Claim
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1. A PTO drive assembly for a transmission, comprising:
- a shaft coupled to a drive unit and configured to transfer torque generated by the drive unit, the shaft defining a shaft axis;
a PTO gear defined radially about the shaft axis; and
a clutch assembly positioned between the shaft and the PTO gear and having an engaged position and a disengaged position;
wherein, when the clutch assembly is in the engaged position, torque is transferred from the shaft to the PTO gear;
wherein, when the clutch assembly is in the disengaged position, torque is not transferred from the shaft to the PTO gear.
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Abstract
A power take-off (PTO) drive assembly for a transmission includes a shaft defining a shaft axis, a PTO gear defined radially about the shaft axis, and a clutch assembly positioned between the shaft and the PTO gear and having an engaged position and a disengaged position. When the clutch assembly is in the engaged position, torque is transferred from the shaft to the PTO gear. When the clutch assembly is in the disengaged position, torque is not transferred from the shaft to the PTO gear.
3 Citations
31 Claims
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1. A PTO drive assembly for a transmission, comprising:
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a shaft coupled to a drive unit and configured to transfer torque generated by the drive unit, the shaft defining a shaft axis; a PTO gear defined radially about the shaft axis; and a clutch assembly positioned between the shaft and the PTO gear and having an engaged position and a disengaged position; wherein, when the clutch assembly is in the engaged position, torque is transferred from the shaft to the PTO gear; wherein, when the clutch assembly is in the disengaged position, torque is not transferred from the shaft to the PTO gear. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A transmission having a PTO drive assembly with an internal clutch, the transmission comprising:
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a transmission housing having a first end and a second end; a torque converter coupled to the housing, the converter configured to receive torque from a drive unit; a shaft disposed in the housing and defining a shaft axis, the shaft being rotationally coupled to an output shaft of the drive unit and coupled at one end to the torque converter; a PTO drive assembly disposed within the housing and including a PTO gear selectively coupled to the shaft; a clutch assembly disposed within the transmission housing between PTO gear and the shaft, the clutch assembly having an engaged position and a disengaged position; and wherein, the PTO gear rotates at the same speed as the shaft relative to the transmission housing when the clutch assembly is in the engaged position; and wherein, the PTO gear does not rotate at the same speed as the shaft relative to the transmission housing when the clutch assembly is in the disengaged position. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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21. A transmission system, comprising:
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a drive unit coupled to an output shaft along a shaft axis, the drive unit adapted to rotatably drive the output shaft; a torque converter rotationally coupled to the output shaft, the torque converter further having a PTO drive shaft coupled to the output shaft; a transmission case coupled to the torque converter and coupled to a PTO drive assembly; wherein, the PTO drive assembly comprises; a PTO gear defined radially about the shaft axis; and a clutch assembly having an engaged position and a disengaged position disposed between the PTO drive shaft and the PTO gear, where torque is transferred from the output shaft to the PTO gear when the clutch assembly is in the engaged position, and torque is not transferred from the output shaft to the PTO gear when the clutch assembly is in the disengaged position. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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Specification