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US 12,703,315 B2Granted
Speed control for hydraulic system of a refuse vehicle
AssigneeOshkosh Corporation
InventorsChris Mills, Greg Steffens, Chris Rukas, Jeremy Andringa, Colin Wheeler
Life of this patent
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Abstract
A refuse vehicle including an electric motor powered by a battery, a hydraulic pump driven by the electric motor, a hydraulic actuator powered by the hydraulic pump, and one or more processing circuits comprising one or more memory devices coupled to one or more processors, the one or more memory devices configured to store instructions thereon that, when executed by the one or more processors, cause the one or more processors to: determine a load of the hydraulic actuator, and control a speed of the electric motor driving the hydraulic pump to achieve the load.
Claims19
A refuse vehicle comprising:
- a first electric motor powered by a battery;
- a first hydraulic pump driven by the first electric motor;
- a packer actuator powered by the first hydraulic pump;
- a second electric motor powered by the battery;
- a second hydraulic pump driven by the second electric motor;
- a door actuator driven by the second hydraulic pump;
- and
- one or more processing circuits comprising one or more memory devices coupled to one or more processors, the one or more memory devices configured to store instructions thereon that, when executed by the one or more processors, cause the one or more processors to:
- determine a load of the packer actuator;
- control a speed of the first electric motor driving the first hydraulic pump to achieve the load;
- determine a second load of the door actuator;
- and
- control a speed of the second electric motor driving the second hydraulic pump to achieve the second load.
10 more elements
A refuse vehicle, comprising:
- a first electric motor powered by a battery;
- a first hydraulic pump driven by the first electric motor;
- a packer actuator powered by the first hydraulic pump;
- a second electric motor powered by the battery;
- a second hydraulic pump driven by the second electric motor;
- a door actuator powered by the second hydraulic pump;
- a lift actuator driven by the second hydraulic pump;
- and
- one or more processing circuits comprising one or more memory devices coupled to one or more processors, the one or more memory devices configured to store instructions thereon that, when executed by the one or more processors, cause the one or more processors to:
- determine a packer load of the packer actuator;
- control a speed of the first electric motor driving the first hydraulic pump to achieve the packer load;
- determine a door load of the door actuator;
- determine a lift load of the lift actuator;
- and
- control a speed of the second electric motor driving the second hydraulic pump to achieve the door load and the lift load.
12 more elements
A refuse vehicle comprising:
- a storage compartment including:
- a front post adjacent a front wall,
- a rear post adjacent a rear wall,
- a mid post between the front post and the rear post,
- a hopper volume defined between the front post and the mid post, and
- a storage volume defined between the mid post and the rear post;
- a hydraulic system cavity defined in the front wall;
- a first electric motor positioned within the hydraulic system cavity and powered by a battery;
- a first hydraulic pump positioned within the hydraulic system cavity and driven by the first electric motor;
- a packer actuator powered by the first hydraulic pump;
- a second electric motor positioned within the hydraulic system cavity and powered by the battery;
- a second hydraulic pump positioned within the hydraulic system cavity and driven by the second electric motor;
- a door assembly including:
- a door system manifold positioned outside the hydraulic system cavity and rearward of the mid post, the door system manifold receiving a flow of hydraulic fluid from the second hydraulic pump, and
- a door actuator powered via the door system manifold;
- a grabber arm assembly including:
- an arm assembly manifold positioned outside the hydraulic system cavity and receiving a flow of hydraulic fluid from the second hydraulic pump, and
- a reach actuator powered via the arm assembly manifold;
- and
- one or more processing circuits comprising one or more memory devices coupled to one or more processors, the one or more memory devices configured to store instructions thereon that, when executed by the one or more processors, cause the one or more processors to:
- determine a packer load of the packer actuator;
- control a speed of the first electric motor driving the first hydraulic pump to achieve the packer load;
- determine a door load of the door actuator;
- determine a reach load of the reach actuator;
- and
- control a speed of the second electric motor driving the second hydraulic pump to achieve the door load and the reach load.
23 more elements
Dependencies are inferred from the claim text.