US 12,731,447 B2 · Proportional relief system for a power take-off

Abstract

A proportional relief manifold system for a power take-off device includes a proportional relief solenoid valve. A pressure transducer is mechanically coupled to the proportional relief solenoid valve and is configured to measure an actual fluid pressure. Controller circuitry is in electrical communication with the pressure transducer and the proportional relief solenoid valve. The controller circuitry receives a desired fluid pressure and receives from the pressure transducer the measured actual fluid pressure. The controller circuitry determines a pressure difference between the received actual fluid pressure and the received desired fluid pressure and determines a pressure operating parameter based on the determined pressure difference. The controller circuitry modulates the actual fluid pressure by outputting the pressure operating parameter to the proportional relief solenoid valve to modify the actual fluid pressure to match the desired fluid pressure.

Claims19

Dependent claims

A proportional relief manifold system for a power take-off device, comprising:

a proportional relief solenoid valve including a spool and defining an inlet port and an outlet port, wherein:
both the inlet port and the outlet port are configured to be in fluid communication with a fluid power line;
the inlet port is located on an upstream side of the spool;
and
the outlet port is located on a downstream side of the spool;
a pressure transducer mechanically coupled to the proportional relief solenoid valve and configured to measure an actual fluid pressure on the upstream side of the spool;
and
controller circuitry in electrical communication with the pressure transducer and the proportional relief solenoid valve, wherein the controller circuitry is configured to:
receive a desired fluid pressure;
receive from the pressure transducer the measured actual fluid pressure;
determine a pressure difference between the received actual fluid pressure and the received desired fluid pressure,
determine a pressure operating parameter based on the determined pressure difference;
and
modulate the actual fluid pressure by outputting the pressure operating parameter to the proportional relief solenoid valve, such that the proportional relief solenoid valve modifies the actual fluid pressure of the fluid to match the desired fluid pressure.

11 more elements

An electronic control system for a power take-off system operating a unit of equipment located on a vehicle trailer, comprising:

controller circuitry configured to receive a plurality of desired power take-off operating parameters associated with a plurality of units of equipment selectively operated by the fluid, the controller circuitry including:
a memory configured to store the plurality of desired power take-off operating parameters associated with the plurality of units of equipment, wherein:
the controller circuitry is configured to:
receive an equipment operating status from an operation sensor,
compare the equipment operating status to a desired power take-off operating parameter of the plurality of desired power take-off operating parameters stored in the memory,
determine a power take-off operating parameter based upon the comparison of the equipment operating status to the desired power take-off operating parameter, and
output the power take-off operating parameter to a power take-off device, such that the power take-off device is at least one of engaged or disengaged by altering a connection of the power take-off device to a powertrain of a vehicle.

4 more elements

Dependencies are inferred from the claim text.

Proportional relief system for a power take-off

Life of this patent

Proportional relief system for a power take-off

Life of this patent

Abstract

Claims19