System and method for a compressor
First Claim
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1. A method comprising:
- monitoring a pressure of compressed air within a reservoir of a compressor, the reservoir configured to store compressed air to be provided to at least one pneumatic device, and the compressor having a first stage to compress air to a first pressure level and having a second stage to pressurize air from the first stage to a second pressure level which is greater than the first pressure level;
actuating a piston within a cylinder of the second stage of the compressor; and
detecting a leak condition of an exhaust valve of the cylinder based on an analysis of a frequency domain of the monitored pressure of the compressed air within the reservoir during a time period in which the piston is actuated;
wherein detecting a leak condition of the exhaust valve of the cylinder further comprises correlating the monitored pressure of the compressed air within the reservoir with an indication of a position of the piston in the cylinder.
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Abstract
Systems and methods of the invention relate to diagnosing a compressor. A method may include monitoring a pressure of compressed air within a reservoir, actuating a piston within a cylinder of the compressor, and detecting a leak condition of an exhaust valve of the cylinder through recognition of a change in the monitored pressure of the compressed air within the reservoir during a time period in which the piston is actuated. A system is also disclosed including an engine, a compressor operatively connected to the engine, and a controller that is operable to determine a condition of the compressor.
159 Citations
21 Claims
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1. A method comprising:
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monitoring a pressure of compressed air within a reservoir of a compressor, the reservoir configured to store compressed air to be provided to at least one pneumatic device, and the compressor having a first stage to compress air to a first pressure level and having a second stage to pressurize air from the first stage to a second pressure level which is greater than the first pressure level; actuating a piston within a cylinder of the second stage of the compressor; and detecting a leak condition of an exhaust valve of the cylinder based on an analysis of a frequency domain of the monitored pressure of the compressed air within the reservoir during a time period in which the piston is actuated; wherein detecting a leak condition of the exhaust valve of the cylinder further comprises correlating the monitored pressure of the compressed air within the reservoir with an indication of a position of the piston in the cylinder. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A controller that is operable in association with a compressor, wherein the controller is configured to:
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receive a signal corresponding to a monitored pressure of compressed air within a reservoir configured to store compressed air to be provided to at least one pneumatic device, the compressed air, from a compressor having a first stage to compress air to a first pressure level and having a second stage to pressurize air from the first stage to a second pressure level which is greater than the first pressure level; detect a leak condition of an exhaust valve of a cylinder of the second stage of the compressor based on an analysis of a frequency domain of the monitored pressure of the compressed air within the reservoir during a time period in which a piston is actuated within the cylinder; and responsive to the leak condition that is detected, at least one of control a duty cycle of the compressor, disconnect power to the compressor such that the compressor ceases operating, adjust operation of another compressor, or generate a signal for notifying personnel; wherein the controller is further configured to correlate the signal corresponding to the monitored pressure of the compressed air within the reservoir with an indication of a position of the piston in the cylinder of the compressor. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A method comprising:
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with a pressure sensor, monitoring a pressure of compressed air within a reservoir of a compressor, the reservoir configured to store compressed air to be provided to at least one pneumatic device, and the compressor having a first stage to compress air to a first pressure level and having a second stage to pressurize air from the first stage to a second pressure level which is greater than the first pressure level; with a controller, actuating a piston within a cylinder of the second stage of the compressor; and with the controller, detecting a leak condition of an exhaust valve of the cylinder based on an analysis of a frequency domain of the monitored pressure of the compressed air within the reservoir during a time period in which the piston is actuated; wherein detecting a leak condition of the exhaust valve of the cylinder further comprises correlating the monitored pressure of the compressed air within the reservoir with an indication of a position of the piston in the cylinder. - View Dependent Claims (19)
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20. A system comprising:
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a compressor having a first stage, a second stage, and a reservoir, wherein the first stage is configured to compress air to a first pressure level, and the second stage is configured to store compressed air within the reservoir by pressurizing air from the first stage to a second pressure level which is greater than the first pressure level, the reservoir configured to store the compressed air to be provided to at least one pneumatic device; a pressure sensor; and a controller, wherein the controller is configured to; receive a signal from the pressure sensor corresponding to a monitored pressure of the compressed air within the reservoir; detect a leak condition of an exhaust valve of a cylinder of the second stage of the compressor based on an analysis of a frequency domain of the monitored pressure of the compressed air within the reservoir during a time period in which a piston is actuated within the cylinder; and responsive to the leak condition that is detected, at least one of control a duty cycle of the compressor, disconnect power to the compressor such that the compressor ceases operating, adjust operation of another compressor, or generate a signal for notifying personnel; wherein the controller is further configured to correlate the signal corresponding to the monitored pressure of the compressed air within the reservoir with an indication of a position of the piston in the cylinder of the compressor. - View Dependent Claims (21)
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Specification