PTO overspeed protection strategy
AssigneeEaton Corporation
InventorsMike Romine, Gregg Andres, William J. Mack, David Brooks
Life of this patent
Estimating the term…
Abstract
An exemplary embodiment includes a method of operating a drivetrain. The drivetrain includes a PTO and a transmission having multiple speed ratios. The PTO includes a PTO output member and a PTO input member. The method includes monitoring a speed value representative of a rotational speed of a PTO component, comparing the speed value to a preselected PTO overspeed value, reducing the rotational speed of the PTO component, and overriding a manual command to increase the rotational speed of the PTO component above the preselected PTO overspeed value.
Claims20
A powertrain system comprising:
- a multispeed transmission defining a plurality of speed ratios;
- a power take off (PTO) having a PTO input member selectively rotationally engaged with a PTO output member;
- a detection system for detecting a value representative of a speed of the PTO output member;
- and
- a controller in communication with the detection system and having an output for overriding a manual input to increase the rotational speed of the PTO output member above a predetermined overspeed value.
A method of operating a drivetrain, the drivetrain including a PTO and a transmission having multiple speed ratios, the PTO including a PTO output member and a PTO input member, the method comprising:
- monitoring a speed value representative of a rotational speed of a PTO component;
- comparing the speed value to a preselected PTO overspeed value;
- reducing the rotational speed of the PTO component when the speed value is within a predetermined tolerance of the overspeed value;
- and
- overriding a manual command to increase the rotational speed of the PTO component above the preselected PTO overspeed value.
A method of operating a drivetrain, the drivetrain including a multispeed transmission, an engine, and a main clutch operably interposed between the engine and the transmission, the method comprising:
- monitoring a speed value representative of a rotational speed of a PTO component;
- comparing the speed value to a preselected PTO overspeed value;
- maintaining the rotational speed of the PTO component below the preselected PTO overspeed value;
- and
- overriding a manual command to increase the rotational speed of the PTO component above the preselected PTO overspeed value.
Dependencies are inferred from the claim text.