Hydraulic system with energy recovery
AssigneeCaterpillar Inc.
InventorJason L. Brinkman
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Abstract
A hydraulic system is disclosed. The hydraulic system includes an actuator including a first, a second, and a third fluid chamber. The hydraulic system also includes a high pressure source of pressurized fluid in selective fluid communication with the first and second fluid chambers. The hydraulic system also includes a low pressure source of pressurized fluid in selective fluid communication with the first and second fluid chambers. The hydraulic system further includes a hydraulic motor in fluid communication with the third fluid chamber.
Claims20
A hydraulic system comprising:
- an actuator including a first, a second, and a third fluid chamber;
- a high pressure source of pressurized fluid in selective fluid communication with the first and second fluid chambers;
- a low pressure source of pressurized fluid in selective fluid communication with the first and second fluid chambers;
- and
- a hydraulic motor fluid communication with the third fluid chamber.
A method of recovering energy associated a hydraulic actuator comprising:
- selectively directing pressurized fluid from a first chamber of the hydraulic actuator toward a low pressure source to establish a retraction of the hydraulic actuator;
- directing pressurized fluid from a second chamber of the hydraulic actuator toward a third chamber via a hydraulic motor during the retraction of the hydraulic actuator;
- and
- producing an output energy via the hydraulic motor.
A hydraulic system comprising:
- a high pressure source of pressurized fluid;
- a low pressure source of pressurized fluid;
- a hydraulic actuator including a first, second, and third fluid chambers therein;
- a first valve fluidly connected with the first fluid chamber, the second fluid chamber, the high pressure source, and the low pressure source;
- and
- a hydraulic motor fluidly connected with the first and third fluid chambers.
Dependencies are inferred from the claim text.