Pump control system for a refuse vehicle
AssigneeOshkosh Corporation
InventorsDerek Wente, Jacob Wallin
Life of this patent
Estimating the term…
Abstract
A refuse vehicle includes a chassis, a body, a lift system, and a controller. The lift system includes a lift arm actuator, a pump, and an electric motor. The pump is configured to power the lift arm actuator and is driven by the electric motor. The controller is configured to receive a user input that specifies a position of the lift arm actuator within a movement range, determine a flow demand required to move the lift arm actuator to the position, determine a motor speed that satisfies the flow demand, and communicate the motor speed to the electric motor.
Claims20
A refuse vehicle, the refuse vehicle comprising:
- a chassis;
- a body coupled to the chassis, the body defining a collection chamber configured to receive refuse therein;
- a lift system coupled to the body, the lift system including:
- a lift arm actuator;
- a first pump configured to power the lift arm actuator;
- a first electric motor coupled to the first pump and configured to drive the first pump;
- and
- a controller communicably coupled to the first electric motor, the controller configured to:
- receive a first user input that specifies a first position of the lift arm actuator within a first movement range;
- determine a first flow demand required to move the lift arm actuator to the first position based on the first user input;
- determine a first motor speed of the first electric motor that satisfies the first flow demand;
- and
- communicate the first motor speed to the first electric motor.
A control system of a refuse vehicle, the control system comprising:
- a first pump configured to produce a pressurized fluid;
- a first electric motor coupled to the first pump and configured to drive the first pump;
- a first hydraulic subsystem fluidly coupled to the first pump, the first hydraulic subsystem including:
- a first actuator, the first actuator having a first movement range;
- a controller communicably coupled to the first electric motor, the controller configured to:
- receive a first user input that specifies a first position of the first actuator within the first movement range;
- determine a first flow demand required to move the first actuator to the first position based on the first user input;
- determine a first motor speed of the first electric motor that satisfies the first flow demand;
- and
- communicate the first motor speed to the first electric motor.
A method, the method comprising:
- receiving a first user input that specifies a first position of a lift arm actuator of a refuse vehicle within a first movement range;
- determining a first flow demand required to move the lift arm actuator to the first position based on the first user input;
- determining a first motor speed of a first electric motor coupled to a first pump and configured to drive the first pump that satisfies the first flow demand;
- and
- communicating the first motor speed to the first electric motor.
Dependencies are inferred from the claim text.