Hydraulic system with improved efficiency
OwnerWillibald G. Berlinger, Francis J. Raabinventors
Life of this patent
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Abstract
A hydraulic system, particularly suitable for use in a work machine, is provided with a hydraulic pressure source. A hydraulic transformer has an inlet and an outlet, with the inlet being coupled with the pressure source. A bypass valve operatively couples at least one hydraulic motor selectively either with the pressure source or the hydraulic transformer outlet, depending upon an operating characteristic associated with at least one hydraulic motor. Each hydraulic motor is operated at a high efficiency by providing the inlet hydraulic fluid at an amplified or non-amplified state.
Claims13
A hydraulic system, comprising:
- a hydraulic pressure source;
- a hydraulic transformer having an inlet and an outlet, said inlet coupled with said pressure source;
- at least one hydraulic motor;
- and
- a bypass valve operatively coupling at least one said motor selectively either with said pressure source or said hydraulic transformer outlet, dependent upon an operating characteristic associated with at least one said hydraulic motor.
A work machine, comprising:
- a frame;
- and
- a hydraulic system including:
- a hydraulic pressure source;
- a hydraulic transformer having an inlet and an outlet, said inlet coupled with said pressure source;
- at least one hydraulic motor;
- and
- a bypass valve operatively coupling at least one said motor selectively either with said pressure source or said hydraulic transformer outlet, dependent upon an operating characteristic associated with at least one said hydraulic motor.
A hydraulic system, comprising:
- a hydraulic pressure source;
- a hydraulic transformer having an inlet and an outlet, said inlet coupled with said pressure source;
- and
- a plurality of hydraulic motors, each said hydraulic motor being fluidly coupled in a parallel manner with at least one of said hydraulic transformer outlet and said pressure source, at least two of said hydraulic motors being configured with different operating ranges.
A work machine, comprising:
- a frame;
- and
- a hydraulic system including:
- a hydraulic pressure source;
- a hydraulic transformer having an inlet and an outlet, said inlet coupled with said pressure source;
- and
- a plurality of hydraulic motors, each said hydraulic motor being fluidly coupled in a parallel manner with at least one of said hydraulic transformer outlet and said pressure source, at least two of said hydraulic motors being configured with different operating ranges.
Dependencies are inferred from the claim text.