Hydraulic system volume reducer
First Claim
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1. A hydraulic system comprising:
- a pressurizer for pressurizing hydraulic fluid;
an actuator responsive to pressurized fluid to perform work;
a hydraulic fluid line interconnecting said pressurizer and said actuator; and
a volume reducer in said hydraulic fluid line, said volume reducer including a substantially straight section of said hydraulic fluid line and a body freely slidable in said straight section in response to pressure changes in said hydraulic fluid line, said body configured with and arranged in said straight section for reducing the volume of hydraulic fluid required for operating said system by transmitting pressurization of hydraulic fluid in said fluid line on one side of said body to hydraulic fluid in said fluid line on an opposite side of said body.
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Abstract
A volume reducer for a hydraulic system, particularly useful for low pressure hydraulic systems such as used in engine compression braking systems. The hydraulic system has an actuator and a pressurizer, with a hydraulic line interconnecting the actuator and the pressurizer. A substantially straight section of the hydraulic line is provided, and a slidable body is provided in the substantially straight section. The body slides in the hydraulic line in response to pressure changes in the hydraulic line, and occupies hydraulic line volume, to stiffen the hydraulic system and reduce system sluggishness.
18 Citations
21 Claims
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1. A hydraulic system comprising:
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a pressurizer for pressurizing hydraulic fluid;
an actuator responsive to pressurized fluid to perform work;
a hydraulic fluid line interconnecting said pressurizer and said actuator; and
a volume reducer in said hydraulic fluid line, said volume reducer including a substantially straight section of said hydraulic fluid line and a body freely slidable in said straight section in response to pressure changes in said hydraulic fluid line, said body configured with and arranged in said straight section for reducing the volume of hydraulic fluid required for operating said system by transmitting pressurization of hydraulic fluid in said fluid line on one side of said body to hydraulic fluid in said fluid line on an opposite side of said body. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An engine compression braking system for an engine, said engine braking system comprising:
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a cylinder valve;
an actuator operating on said valve responsive to pressurized fluid;
a pressurizer for pressurizing hydraulic fluid;
a hydraulic fluid line interconnecting said pressurizer and said actuator; and
a volume reducer in said hydraulic fluid line, said volume reducer including a substantially straight section of said hydraulic fluid line, and a body freely slidable in said substantially straight section in response to pressure changes in said hydraulic fluid line, said body configured with and arranged in said straight section for reducing the volume of hydraulic fluid required for operating said system by transmitting pressurization of hydraulic fluid in said fluid line on one side of said body to hydraulic fluid in said fluid line on an opposite side of said body. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A method for operating a hydraulic system with reduced hydraulic fluid volume, comprising:
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providing a pressurizer for pressurizing hydraulic fluid and an actuator responsive to pressurized fluid to perform work;
providing a hydraulic fluid line interconnecting the pressurizer and the actuator; and
reducing the volume of fluid required for operating the system by providing a body freely slidable in the hydraulic fluid line;
pressurizing fluid in the hydraulic fluid line;
sliding the body in the hydraulic fluid line in response to pressure changes in the hydraulic fluid line; and
transmitting pressurization of hydraulic fluid in the fluid line on one side of the body to hydraulic fluid in the fluid line on an opposite side of the body. - View Dependent Claims (20)
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21. A volume reducer for a hydraulic circuit comprising:
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a substantially straight hydraulic fluid line in the circuit; and
a body freely slidable in said hydraulic fluid line in response to pressure changes in said hydraulic fluid line, said body configured with and arranged in said fluid line for reducing the volume of hydraulic fluid required for operating said circuit by transmitting pressurization of hydraulic fluid in said fluid line on one side of said body to hydraulic fluid in said fluid line on an opposite side of said body.
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Specification