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US 9,067,492 B2Granted
Transmission with integrated PTO input gear damper
AssigneeZF Friedrichshafen AG
InventorsBerron Hairston, Bradford White
Life of this patent
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Abstract
A power take-off unit (“PTO”) may include a damper to reduce noise while the PTO is operating at low torque or at low RPM. The damper may also be located in the transmission before the PTO driver gear. A method may be used to systematically measure the frequency and/or amplitude of the vibrations that cause noise and to adjust the damping constant of a damper to reduce the noise.
Claims9
A damped transmission for connecting to a power take-off unit, the damped transmission comprising:
- a damper;
- a drive gear;
- a torque converter;
- a first shaft configured to transmit torque from the torque converter to the damper;
- and
- a second shaft configured to transmit torque from the damper to the drive gear, wherein the drive gear is configured to connect with the power take-off unit.
3 more elements
Dependencies are inferred from the claim text.