EP4372221A1 - Kavitationsdetektion unter verwendung von drehmomentbelastung und/oder sofortigem kraftstoffverbrauch - Google Patents

Kavitationsdetektion unter verwendung von drehmomentbelastung und/oder sofortigem kraftstoffverbrauch Download PDF

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Publication number
EP4372221A1
EP4372221A1 EP23209440.9A EP23209440A EP4372221A1 EP 4372221 A1 EP4372221 A1 EP 4372221A1 EP 23209440 A EP23209440 A EP 23209440A EP 4372221 A1 EP4372221 A1 EP 4372221A1
Authority
EP
European Patent Office
Prior art keywords
controller
fluctuation
torque load
power consumption
operable
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP23209440.9A
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English (en)
French (fr)
Inventor
Brett Allen DAVIS
John Edward GEERTSEMA
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Cattron North America Inc
Original Assignee
Cattron North America Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US18/387,285 external-priority patent/US20240068910A1/en
Application filed by Cattron North America Inc filed Critical Cattron North America Inc
Publication of EP4372221A1 publication Critical patent/EP4372221A1/de
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/0097—Electrical control of supply of combustible mixture or its constituents using means for generating speed signals
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/22—Safety or indicating devices for abnormal conditions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/06—Control using electricity
    • F04B49/065—Control using electricity and making use of computers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/10—Other safety measures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D13/00—Pumping installations or systems
    • F04D13/02—Units comprising pumps and their driving means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D15/00—Control, e.g. regulation, of pumps, pumping installations or systems
    • F04D15/0088—Testing machines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/66—Combating cavitation, whirls, noise, vibration or the like; Balancing
    • F04D29/669—Combating cavitation, whirls, noise, vibration or the like; Balancing especially adapted for liquid pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/02—Input parameters for engine control the parameters being related to the engine
    • F02D2200/06—Fuel or fuel supply system parameters
    • F02D2200/0625—Fuel consumption, e.g. measured in fuel liters per 100 kms or miles per gallon
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D2200/00—Input parameters for engine control
    • F02D2200/02—Input parameters for engine control the parameters being related to the engine
    • F02D2200/10—Parameters related to the engine output, e.g. engine torque or engine speed
    • F02D2200/1002—Output torque
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05D—INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS
    • F05D2270/00—Control
    • F05D2270/30—Control parameters, e.g. input parameters
    • F05D2270/335—Output power or torque

Definitions

  • the present disclosure generally relates to controllers (e.g. , control panels, etc. ) configured to be operable for detecting pump cavitation using torque load and/or instantaneous fuel consumption.
  • controllers e.g. , control panels, etc.
  • Control panels are commonly used for controlling operation of engines, motors, and machines. This includes monitoring numerous parameters such as oil pressure, water pressure, engine torque, engine fuel consumption, water flow, vibration, etc.
  • exemplary controllers disclosed herein are able to detect cavitation by monitoring at least one of engine torque load and/or engine instantaneous fuel consumption for fluctuation (e.g. , significant drop/downward fluctuation in average magnitude and/or erratic, noisy, fluctuating data as shown in FIGS. 1 and 10 , etc. ) indicative of pump cavitation without requiring any additional sensors.
  • a machine-learning controller may be configured to be operable detecting one or more or all of the following that may be used individually or in combination as an indicator of pump cavitation after the machine/system has settled in at a particular RPM:
  • a controller e.g., a machine-learning control panel, etc.
  • a controller is configured to be operable for receiving engine torque load and instantaneous fuel consumption values sent by an engine's electronic control unit, e.g., via a controller area network (CAN Bus), etc.
  • CAN Bus controller area network
  • fluctuation e.g ., significant drop/downward fluctuation in average magnitude and/or erratic, noisy, fluctuating data, etc.
  • existing controllers may be configured ( e.g., via a firmware change, etc. ) with the capability of detecting and then alerting to indications of pump cavitation without requiring any additional sensors according to exemplary embodiments disclosed herein.
  • FIG. 2 illustrates an exemplary embodiment of a system 100 that includes a controller 104 embodying one or more aspects of the present disclosure.
  • the controller 104 is configured to be operable for controlling an engine 108 (e.g., diesel engine, etc. ) , which, in turn, is operable for driving ( e.g., mechanically spinning, etc. ) a pump 112.
  • an engine 108 e.g., diesel engine, etc.
  • driving e.g., mechanically spinning, etc.
  • the controller 104 is in communication with an electronic control unit of the engine 108, e.g., via a controller area network (CAN Bus), etc. ) .
  • the controller 104 is configured to be operable for receiving engine torque load information and/or engine instantaneous fuel consumption from the engine's electronic control unit.
  • the controller 104 is configured to be operable for monitoring either or both of the engine torque load information and/or engine instantaneous fuel consumption information, received from the engine's electronic control unit, for fluctuation ( e.g ., significant drop/downward fluctuation in average magnitude and/or erratic, noisy, fluctuating data as shown in FIGS. 1 and 10 , etc. ) indicative of cavitation of the pump 112.
  • fluctuation e.g ., significant drop/downward fluctuation in average magnitude and/or erratic, noisy, fluctuating data as shown in FIGS. 1 and 10 , etc.
  • the controller 104 may be operable for determining whether fluctuation of the monitored engine torque load is outside of an acceptable range or error threshold (e.g ., a positive/negative (+/-) percentage error threshold of 6%, higher or lower than +/- 6%, a user-selected or adjusted positive/negative (+/-) percentage error threshold, etc. ) .
  • an acceptable range or error threshold e.g ., a positive/negative (+/-) percentage error threshold of 6%, higher or lower than +/- 6%, a user-selected or adjusted positive/negative (+/-) percentage error threshold, etc.
  • the controller 104 may be configured to be operable for executing a machine learning process during which the controller 104 learns steady state fluctuation of engine torque load and from that learns or establishes a default setting ( e.g., +/- 6%, etc. ) for the acceptable range or error threshold for the fluctuation of engine torque load.
  • the controller 104 may be further configured to allow a user to increase or decrease the machine learned default setting for the acceptable range or error threshold.
  • a user may increase the machine learned default setting (e.g., to a value higher than +/-6%, etc. ) to avoid false triggers or false positive indications of pump cavitation.
  • the controller 104 may then issue a warning (e.g., a warning alarm, a shutdown alarm, display or present an error message, etc. ) and/or initiate a shutdown of the engine 108 driving the pump 112.
  • a warning e.g., a warning alarm, a shutdown alarm, display or present an error message, etc.
  • the controller 104 may be operable for determining whether fluctuation of the monitored engine instantaneous fuel consumption is outside of an acceptable range or error threshold (e.g ., +/- 6%, higher or lower than +/- 6%, a user-selected or adjusted positive/negative (+/-) percentage error threshold, etc. ) .
  • the controller 104 may be configured to be operable for executing a machine learning process during which the controller 104 learns steady state fluctuation of engine instantaneous fuel consumption and from that learns or establishes a default setting ( e.g., +/- 6%, etc. ) for the acceptable range or error threshold for the fluctuation of engine instantaneous fuel consumption.
  • the controller 104 may be further configured to allow a user to increase or decrease the machine learned default setting for the acceptable range or error threshold.
  • a user may increase the machine learned default setting (e.g., to a value higher than +/-6%, etc. ) to avoid false triggers or false positive indications of pump cavitation.
  • the controller 104 may then issue a warning (e.g. , a warning alarm, a shutdown alarm, display or present an error message, an alert indicating that maintenance is needed, etc. ) and/or the controller 104 initiate a shutdown of the engine 108 driving the pump 112.
  • a warning e.g. , a warning alarm, a shutdown alarm, display or present an error message, an alert indicating that maintenance is needed, etc.
  • the controller 104 may be operable for determining whether there is a significant drop in the average magnitude of the monitored engine torque load that exceeds an acceptable range or threshold, e.g., 15% to 20%, higher than 20%, a user-selected percentage threshold, etc..
  • the controller 104 may be configured to be operable for executing a machine learning process (e.g., a learning algorithm, etc. ) during which the controller 104 learns or establishes a default setting ( e.g., 15% to 20%, etc. ) for the acceptable range or threshold for the significant drop in the average magnitude of the monitored engine torque load.
  • the controller 104 may be further configured to allow a user to increase or decrease the acceptable range or threshold.
  • a user may increase the machine learned default setting (e.g., to a value higher than 20%, etc. ) to avoid false triggers or false positive indications of pump cavitation.
  • the controller 104 may then issue a warning (e.g. , a warning alarm, a shutdown alarm, display or present an error message, an alert indicating that maintenance is needed, etc. ) and/or the controller 104 initiate a shutdown of the engine 108 driving the pump 112.
  • a warning e.g. , a warning alarm, a shutdown alarm, display or present an error message, an alert indicating that maintenance is needed, etc.
  • the controller 104 may also or instead be operable for determining whether there is a significant drop in the average magnitude of the monitored engine instantaneous fuel consumption that exceeds an acceptable range or threshold, e.g., 15% to 20%, higher than 20%, a user-selected percentage threshold, etc..
  • the controller 104 may be configured to be operable for executing a machine learning process (e.g., a learning algorithm, etc. ) during which the controller 104 learns or establishes a default setting ( e.g., 15% to 20%, etc. ) for the acceptable range or threshold for the significant drop in the average magnitude of the monitored engine instantaneous fuel consumption.
  • the controller 104 may be further configured to allow a user to increase or decrease the acceptable range or threshold.
  • a user may increase the machine learned default setting (e.g., to a value higher than 20%, etc. ) to avoid false triggers or false positive indications of pump cavitation.
  • the controller 104 may then issue a warning (e.g. , a warning alarm, a shutdown alarm, display or present an error message, an alert indicating that maintenance is needed, etc.) and/or the controller 104 initiate a shutdown of the engine 108 driving the pump 112.
  • a warning e.g. , a warning alarm, a shutdown alarm, display or present an error message, an alert indicating that maintenance is needed, etc.
  • controller 104 may be configured to be operable for detecting one or more or all of the following that may be used individually or in combination as an indicator of pump cavitation:
  • the controller 104 is thus able to detect and/or initiate alerts for indications of cavitation of the pump 112 by using the engine torque load information and/or engine instantaneous fuel consumption information received from the engine's electronic control unit without requiring reliance upon any existing or additional vibration sensors for detecting pump cavitation.
  • the controller 104 is also shown in communication with one or more sensors 116 (e.g., flow sensor(s), suction and/or discharge pressure sensors, tank level sensor(s) at source tank(s) and/or output tank(s), etc. ) .
  • FIG. 2 shows the sensors 116 remotely spaced apart from the engine 108 and the pump 112.
  • the system 100 may also include one or more sensor(s) that are a part of, integrated with, or built into the engine 108 and/or the pump 112, such as a built-in pressure sensor within the pump 112, etc.
  • the controller 104 may control operation of the pump 112 by sending commands to the engine's electronic control unit (ECU) ( e.g., via a controller area network (CAN bus), etc. ) for controllably changing the speed of the engine 108 that is driving the pump 112.
  • the pump 112 may comprise an industrial diesel driven pump at a water source 120 (e.g., lake, pond, river, reservoir, tank, other water source, etc. ) that is operable for transferring water from the water source 120 to a second location 124.
  • FIG. 3 illustrates an exemplary embodiment of a system 200 including a controller 204 embodying one or more aspects of the present disclosure.
  • the controller 204 is configured to be operable for controlling a variable frequency drive (VFD) 232, e.g., via ModBus data communications protocol, etc.
  • VFD variable frequency drive
  • the VFD 232 enables speed control of a three-phase AC motor 236 (broadly, a motor) that drives ( e.g., mechanically spins, etc. ) a pump 240.
  • the VFD 232 is operable for manipulating the frequency of the output by rectifying an incoming AC current into DC, and then using voltage pulse-width modulation (PWM) to recreate an AC current and voltage output waveform.
  • PWM voltage pulse-width modulation
  • a communication link (e.g., hard wired connection, wireless connection, etc. ) is provided from the controller 204 to the VFD 232.
  • a communication link e.g., hard wired connection, wireless connection, etc.
  • a single cable or other suitable communication link may be provided from the controller 204 to the VFD 232.
  • the controller 204 is configured to be operable for monitoring either or both of the torque load and/or electrical power consumption of the motor 236 for fluctuation (e.g. , significant drop/downward fluctuation in average magnitude and/or erratic, noisy, fluctuating data as shown in FIGS. 1 and 10 , etc. ) indicative of cavitation of the pump 240.
  • fluctuation e.g. , significant drop/downward fluctuation in average magnitude and/or erratic, noisy, fluctuating data as shown in FIGS. 1 and 10 , etc.
  • the controller 204 may be operable for determining whether fluctuation of the monitored motor torque load is outside of an acceptable range or error threshold (e.g ., +/- 6%, higher or lower than +/- 6%, a user-selected or adjusted positive/negative (+/-) percentage error threshold, etc. ) .
  • the controller 204 may be configured to be operable for executing a machine learning process during which the controller 204 learns steady state fluctuation of motor torque load and from that learns or establishes a default setting ( e.g., +/- 6%, etc. ) for the acceptable range or error threshold for the fluctuation of motor torque load.
  • the controller 204 may be further configured to allow a user to increase or decrease the machine learned default setting for the acceptable range or error threshold.
  • a user may increase the machine learned default setting (e.g., to a value higher than +/-6%, etc. ) to avoid false triggers or false positive indications of pump cavitation.
  • the controller 204 may then issue a warning (e.g., a warning alarm, a shutdown alarm, display or present an error message, an alert indicating that maintenance is needed, etc. ) and/or the controller 204 may initiate a shutdown of the motor 236 driving the pump 240.
  • a warning e.g., a warning alarm, a shutdown alarm, display or present an error message, an alert indicating that maintenance is needed, etc.
  • the controller 204 may be operable for determining whether fluctuation of the monitored motor power consumption is outside of an acceptable range or error threshold (e.g. , +/- 6%, higher or lower than +/- 6%, a user-selected or adjusted positive/negative (+/-) percentage error threshold, etc. ) .
  • the controller 204 may be configured to be operable for executing a machine learning process during which the controller 204 learns steady state fluctuation of motor power consumption and from that learns or establishes a default setting ( e.g., +/- 6%, etc. ) for the acceptable range or error threshold for the fluctuation of motor power consumption.
  • the controller 204 may be further configured to allow a user to increase or decrease the machine learned default setting for the acceptable range or error threshold.
  • a user may increase the machine learned default setting (e.g., to a value higher than +/-6%, etc. ) to avoid false triggers or false positive indications of pump cavitation.
  • the controller 204 may then issue a warning and/or initiate a shutdown of the motor 236 driving the pump 240.
  • the controller 204 may be operable for determining whether there is a significant drop in the average magnitude of the monitored engine torque load that exceeds an acceptable range or threshold, e.g., 15% to 20%, higher than 20%, a user-selected percentage threshold, etc..
  • the controller 204 may be configured to be operable for executing a machine learning process (e.g., a learning algorithm, etc. ) during which the controller 204 learns or establishes a default setting ( e.g., 15% to 20%, etc. ) for the acceptable range or threshold for the significant drop in the average magnitude of the monitored engine torque load.
  • the controller 204 may be further configured to allow a user to increase or decrease the acceptable range or threshold.
  • a user may increase the machine learned default setting (e.g., to a value higher than 20%, etc. ) to avoid false triggers or false positive indications of pump cavitation.
  • the controller 204 may then issue a warning and/or initiate a shutdown of the motor 236 driving the pump 240.
  • the controller 204 may also or instead be operable for determining whether there is a significant drop in the average magnitude of the monitored motor power consumption that exceeds an acceptable range or threshold, e.g., 15% to 20%, higher than 20%, a user-selected percentage threshold, etc..
  • the controller 204 may be configured to be operable for executing a machine learning process (e.g., a learning algorithm, etc. ) during which the controller 204 learns or establishes a default setting ( e.g., 15% to 20%, etc. ) for the acceptable range or threshold for the significant drop in the average magnitude of the monitored motor power consumption.
  • the controller 204 may be further configured to allow a user to increase or decrease the acceptable range or threshold.
  • a user may increase the machine learned default setting (e.g., to a value higher than 20%, etc. ) to avoid false triggers or false positive indications of pump cavitation.
  • the controller 204 may then issue a warning and/or initiate a shutdown of the motor 236 driving the pump 240.
  • controller 204 may be configured to be operable for detecting one or more or all of the following that may be used individually or in combination as an indicator of pump cavitation:
  • the controller 204 is thus able to detect and/or initiate alerts for indications of cavitation of the pump 240 by using the motor torque load information and/or motor power consumption without requiring reliance upon any existing or additional vibration sensors for detecting pump cavitation.
  • the controller 204 is also shown in communication with one or more sensors 244 (e.g., flow sensor(s), suction and/or discharge pressure sensors, tank level sensor(s) at source tank(s) and/or output tank(s), etc. ) .
  • FIG. 3 shows the sensors 244 remotely spaced apart from the motor 236 and the pump 240.
  • the system 200 may also include one or more sensor(s) that are a part of, integrated with, or built into the motor 236 and/or the pump 240, such as a built-in pressure sensor within the pump 240, etc.
  • the controller 204 In response to the sensor output (e.g. , received via a hard wired connection, wireless connection, etc. ) , the controller 204 is configured to be operable for controlling the VFD 232, e.g., to start, vary the RPMs (revolutions per minute), and stop the motor 236 based on the configured behavior, etc.
  • FIG. 4 illustrates an exemplary embodiment of a system 300 including first and second controllers 304A and 304B embodying one or more aspects of the present disclosure.
  • the first and second controllers 304A and 304B and other system components shown in FIG. 3 may be identical or substantially similar to the respective controller 104 ( FIG. 2 ) and controller 204 ( FIG. 3 ) and corresponding system components described above.
  • the first controller 304A is configured to be operable for controlling an engine 308 (e.g., diesel engine, etc. ) , which, in turn, is operable for driving ( e.g., mechanically spinning, etc. ) a first pump 312.
  • the first controller 304A is configured to be operable for monitoring one or more sensors 316 ( e.g., flow sensor(s), suction and/or discharge pressure sensors, tank level sensor(s) at source tank(s) and/or output tank(s), etc. ) .
  • sensors 316 e.g., flow sensor(s), suction and/or discharge pressure sensors, tank level sensor(s) at source tank(s) and/or output tank(s), etc.
  • the first controller 304A may control operation of the first pump 312 by sending commands to the engine's electronic control unit (ECU) ( e.g., via a controller area network (CAN bus), etc. ) for controllably changing the speed of the engine 308 that is driving the first pump 312.
  • ECU electronice control unit
  • CAN bus controller area network
  • the first controller 304A may be configured to be operable for receiving engine torque load information and/or engine instantaneous fuel consumption from the engine's electronic control unit.
  • the first controller 304A is configured to be operable for monitoring either or both of the engine torque load information and/or engine instantaneous fuel consumption information, received from the engine's electronic control unit, for fluctuation (e.g ., significant drop/downward fluctuation in average magnitude and/or erratic, noisy, fluctuating data as shown in FIGS. 1 and 10 , etc. ) indicative of cavitation of the pump 312.
  • the first controller 304A may be operable for determining whether fluctuation of the monitored engine torque load is outside of an acceptable range or error threshold (e.g ., a positive/negative (+/-) percentage error threshold of 6%, higher or lower than +/- 6%, a user-selected or adjusted positive/negative (+/-) percentage error threshold, etc. ) .
  • an acceptable range or error threshold e.g ., a positive/negative (+/-) percentage error threshold of 6%, higher or lower than +/- 6%, a user-selected or adjusted positive/negative (+/-) percentage error threshold, etc.
  • the first controller 304A may be configured to be operable for executing a machine learning process during which the first controller 304A learns steady state fluctuation of engine torque load and from that learns or establishes a default setting ( e.g., +/- 6%, etc. ) for the acceptable range or error threshold for the fluctuation of engine torque load.
  • the first controller 304A may be further configured to allow a user to increase or decrease the machine learned default setting for the acceptable range or error threshold.
  • a user may increase the machine learned default setting (e.g., to a value higher than +/-6%, etc. ) to avoid false triggers or false positive indications of pump cavitation.
  • the first controller 304A may then issue a warning (e.g., a warning alarm, a shutdown alarm, display or present an error message, an alert indicating that maintenance is needed, etc. ) and/or the first controller 304A may initiate a shutdown of the engine 308 driving the pump 312.
  • a warning e.g., a warning alarm, a shutdown alarm, display or present an error message, an alert indicating that maintenance is needed, etc.
  • the first controller 304A may be operable for determining whether fluctuation of the monitored engine instantaneous fuel consumption is outside of an acceptable range or error threshold (e.g. , +/- 6%, higher or lower than +/- 6%, a user-selected or adjusted positive/negative (+/-) percentage error threshold, etc. ) .
  • the first controller 304A may be configured to be operable for executing a machine learning process during which the first controller 304A learns steady state fluctuation of engine instantaneous fuel consumption and from that learns or establishes a default setting ( e.g. , +/- 6%, etc. ) for the acceptable range or error threshold for the fluctuation of engine instantaneous fuel consumption.
  • the first controller 304A may be further configured to allow a user to increase or decrease the machine learned default setting for the acceptable range or error threshold.
  • a user may increase the machine learned default setting (e.g., to a value higher than +/-6%, etc. ) to avoid false triggers or false positive indications of pump cavitation.
  • the first controller 304A may then issue a warning (e.g ., a warning alarm, a shutdown alarm, display or present an error message, etc. ) and/or initiate a shutdown of the engine 308 driving the pump 312.
  • a warning e.g ., a warning alarm, a shutdown alarm, display or present an error message, etc.
  • the first controller 304A may be operable for determining whether there is a significant drop in the average magnitude of the monitored engine torque load that exceeds an acceptable range or threshold, e.g., 15% to 20%, higher than 20%, a user-selected percentage threshold, etc..
  • the first controller 304A may be configured to be operable for executing a machine learning process (e.g., a learning algorithm, etc. ) during which the first controller 304A learns or establishes a default setting ( e.g., 15% to 20%, etc. ) for the acceptable range or threshold for the significant drop in the average magnitude of the monitored engine torque load.
  • the first controller 304A may be further configured to allow a user to increase or decrease the acceptable range or threshold.
  • a user may increase the machine learned default setting (e.g., to a value higher than 20%, etc. ) to avoid false triggers or false positive indications of pump cavitation.
  • the first controller 304A may then issue a warning (e.g. , a warning alarm, a shutdown alarm, display or present an error message, etc. ) and/or initiate a shutdown of the engine 308 driving the pump 312.
  • a warning e.g. , a warning alarm, a shutdown alarm, display or present an error message, etc.
  • the first controller 304A may also or instead be operable for determining whether there is a significant drop in the average magnitude of the monitored engine instantaneous fuel consumption that exceeds an acceptable range or threshold, e.g., 15% to 20%, higher than 20%, a user-selected percentage threshold, etc..
  • the first controller 304A may be configured to be operable for executing a machine learning process (e.g., a learning algorithm, etc. ) during which the first controller 304A learns or establishes a default setting ( e.g., 15% to 20%, etc. ) for the acceptable range or threshold for the significant drop in the average magnitude of the monitored engine instantaneous fuel consumption.
  • the first controller 304A may be further configured to allow a user to increase or decrease the acceptable range or threshold.
  • a user may increase the machine learned default setting (e.g ., to a value higher than 20%, etc. ) to avoid false triggers or false positive indications of pump cavitation.
  • the first controller 304A may then issue a warning (e.g ., a warning alarm, a shutdown alarm, display or present an error message, etc. ) and/or initiate a shutdown of the engine 308 driving the pump 312.
  • a warning e.g ., a warning alarm, a shutdown alarm, display or present an error message, etc.
  • the second controller 304B is configured to be operable for controlling a variable frequency drive (VFD) 332, which enables speed control of a three-phase AC motor 336 (broadly, a motor) that drives ( e.g ., mechanically spins, etc. ) a second pump 340.
  • the second controller 304B is configured to be operable for monitoring one or more sensors 344 (e.g., flow sensor(s), suction and/or discharge pressure sensors, tank level sensor(s) at source tank(s) and/or output tank(s), etc. ) .
  • the second controller 304B is configured to be operable for controlling the VFD 332, e.g., to start, vary the RPMs (revolutions per minute), and stop the motor 336 based on the configured behavior, etc.
  • the second controller 304B may be configured to be operable for monitoring either or both of the torque load and/or electrical power consumption of the motor 336 for fluctuation (e.g. , significant drop/downward fluctuation in average magnitude and/or erratic, noisy, fluctuating data as shown in FIGS. 1 and 10 , etc. ) indicative of cavitation of the pump 340.
  • fluctuation e.g. , significant drop/downward fluctuation in average magnitude and/or erratic, noisy, fluctuating data as shown in FIGS. 1 and 10 , etc.
  • the second controller 304B may be operable for determining whether fluctuation of the monitored motor torque load is outside of an acceptable range or error threshold (e.g ., +/- 6%, higher or lower than +/- 6%, a user-selected or adjusted positive/negative (+/-) percentage error threshold, etc. ) .
  • the second controller 304B may be configured to be operable for executing a machine learning process during which the second controller 304B learns steady state fluctuation of motor torque load and from that learns or establishes a default setting ( e.g., +/- 6%, etc. ) for the acceptable range or error threshold for the fluctuation of motor torque load.
  • the second controller 304B may be further configured to allow a user to increase or decrease the machine learned default setting for the acceptable range or error threshold.
  • a user may increase the machine learned default setting (e.g., to a value higher than +/-6%, etc. ) to avoid false triggers or false positive indications of pump cavitation.
  • the second controller 304B may then issue a warning (e.g., a warning alarm, a shutdown alarm, display or present an error message, an alert indicating that maintenance is needed, etc. ) and/or the second controller 304B may initiate a shutdown of the motor 336 driving the pump 340.
  • a warning e.g., a warning alarm, a shutdown alarm, display or present an error message, an alert indicating that maintenance is needed, etc.
  • the second controller 304B may be operable for determining whether fluctuation of the monitored motor power consumption is outside of an acceptable range or error threshold (e.g ., +/- 6%, higher or lower than +/- 6%, a user-selected or adjusted positive/negative (+/-) percentage error threshold, etc. ) .
  • the second controller 304B may be configured to be operable for executing a machine learning process during which the second controller 304B learns steady state fluctuation of motor power consumption and from that learns or establishes a default setting ( e.g., +/- 6%, etc. ) for the acceptable range or error threshold for the fluctuation of motor power consumption.
  • the second controller 304B may be further configured to allow a user to increase or decrease the machine learned default setting for the acceptable range or error threshold.
  • a user may increase the machine learned default setting (e.g., to a value higher than +/-6%, etc. ) to avoid false triggers or false positive indications of pump cavitation.
  • the second controller 304B may then issue a warning and/or initiate a shutdown of the motor 336 driving the pump 340.
  • the second controller 304B may be operable for determining whether there is a significant drop in the average magnitude of the monitored engine torque load that exceeds an acceptable range or threshold, e.g., 15% to 20%, higher than 20%, a user-selected percentage threshold, etc..
  • the second controller 304B may be configured to be operable for executing a machine learning process (e.g., a learning algorithm, etc. ) during which the second controller 304B learns or establishes a default setting ( e.g., 15% to 20%, etc. ) for the acceptable range or threshold for the significant drop in the average magnitude of the monitored engine torque load.
  • the second controller 304B may be further configured to allow a user to increase or decrease the acceptable range or threshold.
  • a user may increase the machine learned default setting (e.g., to a value higher than 20%, etc. ) to avoid false triggers or false positive indications of pump cavitation.
  • the second controller 304B may then issue a warning and/or initiate a shutdown of the motor 336 driving the pump 340.
  • the second controller 304B may also or instead be operable for determining whether there is a significant drop in the average magnitude of the monitored motor power consumption that exceeds an acceptable range or threshold, e.g., 15% to 20%, higher than 20%, a user-selected percentage threshold, etc..
  • the second controller 304B may be configured to be operable for executing a machine learning process (e.g., a learning algorithm, etc. ) during which the second controller 304B learns or establishes a default setting ( e.g., 15% to 20%, etc. ) for the acceptable range or threshold for the significant drop in the average magnitude of the monitored motor power consumption.
  • the second controller 304B may be further configured to allow a user to increase or decrease the acceptable range or threshold.
  • a user may increase the machine learned default setting (e.g., to a value higher than 20%, etc. ) to avoid false triggers or false positive indications of pump cavitation.
  • the second controller 304B may then issue a warning and/or initiate a shutdown of the motor 336 driving the pump 340.
  • FIG. 4 shows the sensors 316 remotely spaced apart from the engine 308 and the first pump 312.
  • the system 300 may also include one or more sensor(s) that are a part of, integrated with, or built into the engine 308 and/or the first pump 312, such as a built-in pressure sensor within the first pump 312, etc.
  • FIG. 4 also shows the sensors 344 remotely spaced apart from the motor 336 and the second pump 340.
  • the system 300 may also include one or more sensor(s) that are a part of, integrated with, or built into the motor 336 and/or the second pump 340, such as a built-in pressure sensor within the second pump 340, etc.
  • FIG. 5 illustrates an exemplary embodiment of a system 400 including a controller 404 embodying one or more aspects of the present disclosure.
  • the controller 404 is configured to be operable for controlling a variable frequency drive (VFD) 432 and an engine 408, e.g., in response to or based on the controller's own communications and received sensor output from one or more sensors 416 (e.g., flow sensor(s), suction and/or discharge pressure sensors, tank level sensor(s) at source tank(s) and/or output tank(s), etc. ) in communication with the controller 404, etc.
  • VFD variable frequency drive
  • an engine 408 e.g., in response to or based on the controller's own communications and received sensor output from one or more sensors 416 (e.g., flow sensor(s), suction and/or discharge pressure sensors, tank level sensor(s) at source tank(s) and/or output tank(s), etc. ) in communication with the controller 404, etc.
  • sensors 416 e.g., flow
  • the controller 404 is configured for controlling operation of the VFD 432 itself, e.g., via ModBus data communications protocol, etc.
  • the VFD 432 enables speed control of a three-phase AC motor 436 (broadly, a motor) that drives ( e.g. , mechanically spins, etc. ) a second pump 440.
  • the VFD 432 is operable for manipulating the frequency of the output by rectifying an incoming AC current into DC, and then using voltage pulse-width modulation (PWM) to recreate an AC current and voltage output waveform.
  • PWM voltage pulse-width modulation
  • a communication link (e.g., hard wired connection, wireless connection, etc. ) is provided from the controller 404 to the VFD 432.
  • the controller 404 is configured to be operable for monitoring the one or more sensors 416.
  • the controller 404 is configured to be operable for controlling the VFD 432, e.g., to start, vary the RPMs (revolutions per minute), and stop the motor 436 based on the configured behavior, etc.
  • the same single controller 404 is also configured for controlling operation of the diesel engine 408 (broadly, an engine) that drives ( e.g., mechanically spins, etc. ) a first pump 412.
  • the controller 404 may send commands to the diesel engine's electronic control unit (ECU) via a controller area network (CAN bus).
  • ECU electronice control unit
  • CAN bus controller area network
  • the controller 404 is configured to be operable for receiving engine torque load information and/or engine instantaneous fuel consumption from the engine's electronic control unit.
  • the controller 404 is configured to be operable for monitoring either or both of the engine torque load information and/or engine instantaneous fuel consumption information, received from the engine's electronic control unit, for fluctuation (e.g ., significant drop/downward fluctuation in average magnitude and/or erratic, noisy, fluctuating data as shown in FIGS. 1 and 10 , etc. ) indicative of cavitation of the first pump 412.
  • the controller 404 may be operable for determining whether fluctuation of the monitored engine torque load is outside of an acceptable range or error threshold (e.g ., +/- 6%, higher or lower than +/- 6%, a user-selected or adjusted positive/negative (+/-) percentage error threshold, etc. ) .
  • the controller 404 may be configured to be operable for executing a machine learning process during which the controller 404 learns steady state fluctuation of engine torque load and from that learns or establishes a default setting ( e.g., +/- 6%, etc. ) for the acceptable range or error threshold for the fluctuation of engine torque load.
  • the controller 404 may be further configured to allow a user to increase or decrease the machine learned default setting for the acceptable range or error threshold.
  • a user may increase the machine learned default setting (e.g., to a value higher than +/-6%, etc. ) to avoid false triggers or false positive indications of pump cavitation.
  • the controller 404 may then issue a warning (e.g., a warning alarm, a shutdown alarm, display or present an error message, an alert indicating that maintenance is needed, etc. ) and/or the controller 404 may initiate a shutdown of the engine 408 driving the pump 412.
  • a warning e.g., a warning alarm, a shutdown alarm, display or present an error message, an alert indicating that maintenance is needed, etc.
  • the controller 404 may be operable for determining whether fluctuation of the monitored engine instantaneous fuel consumption is outside of an acceptable range or error threshold (e.g ., +/- 6%, higher or lower than +/- 6%, a user-selected or adjusted positive/negative (+/-) percentage error threshold, etc. ) .
  • the controller 404 may be configured to be operable for executing a machine learning process during which the controller 104 learns steady state fluctuation of engine instantaneous fuel consumption and from that learns or establishes a default setting ( e.g., +/- 6%, etc. ) for the acceptable range or error threshold for the fluctuation of engine instantaneous fuel consumption.
  • the controller 404 may be further configured to allow a user to increase or decrease the machine learned default setting for the acceptable range or error threshold.
  • a user may increase the machine learned default setting (e.g., to a value higher than +/-6%, etc. ) to avoid false triggers or false positive indications of pump cavitation.
  • the controller 404 may then issue a warning and/or initiate a shutdown of the engine 408 driving the pump 412.
  • the controller 404 may be operable for determining whether there is a significant drop in the average magnitude of the monitored engine torque load that exceeds an acceptable range or threshold, e.g., 15% to 20%, higher than 20%, a user-selected percentage threshold, etc..
  • the controller 404 may be configured to be operable for executing a machine learning process (e.g., a learning algorithm, etc. ) during which the controller 404 learns or establishes a default setting ( e.g., 15% to 20%, etc. ) for the acceptable range or threshold for the significant drop in the average magnitude of the monitored engine torque load.
  • the controller 404 may be further configured to allow a user to increase or decrease the acceptable range or threshold.
  • a user may increase the machine learned default setting (e.g., to a value higher than 20%, etc. ) to avoid false triggers or false positive indications of pump cavitation.
  • the controller 404 may then issue a warning and/or initiate a shutdown of the engine 408 driving the pump 412.
  • the controller 404 may also or instead be operable for determining whether there is a significant drop in the average magnitude of the monitored engine instantaneous fuel consumption that exceeds an acceptable range or threshold, e.g., 15% to 20%, higher than 20%, a user-selected percentage threshold, etc..
  • the controller 404 may be configured to be operable for executing a machine learning process (e.g., a learning algorithm, etc. ) during which the controller 404 learns or establishes a default setting ( e.g., 15% to 20%, etc. ) for the acceptable range or threshold for the significant drop in the average magnitude of the monitored engine instantaneous fuel consumption.
  • the controller 404 may be further configured to allow a user to increase or decrease the acceptable range or threshold.
  • a user may increase the machine learned default setting (e.g., to a value higher than 20%, etc. ) to avoid false triggers or false positive indications of pump cavitation.
  • the controller 404 may then issue a warning and/or initiate a shutdown of the engine 408 driving the pump 412.
  • the controller 404 is configured to be operable for monitoring either or both of the torque load and/or electrical power consumption of the motor 436 for fluctuation (e.g ., significant drop/downward fluctuation in average magnitude and/or erratic, noisy, fluctuating data as shown in FIGS. 1 and 10 , etc. ) indicative of cavitation of the pump 440.
  • fluctuation e.g ., significant drop/downward fluctuation in average magnitude and/or erratic, noisy, fluctuating data as shown in FIGS. 1 and 10 , etc.
  • the controller 404 may be operable for determining whether fluctuation of the monitored motor torque load is outside of an acceptable range or error threshold (e.g ., +/- 6%, higher or lower than +/- 6%, a user-selected or adjusted positive/negative (+/-) percentage error threshold, etc. ) .
  • the controller 404 may be configured to be operable for executing a machine learning process during which the controller 404 learns steady state fluctuation of motor torque load and from that learns or establishes a default setting ( e.g., +/- 6%, etc. ) for the acceptable range or error threshold for the fluctuation of motor torque load.
  • the controller 404 may be further configured to allow a user to increase or decrease the machine learned default setting for the acceptable range or error threshold.
  • a user may increase the machine learned default setting (e.g., to a value higher than +/-6%, etc. ) to avoid false triggers or false positive indications of pump cavitation.
  • the controller 404 may then issue a warning and/or initiate a shutdown of the motor 436 driving the pump 440.
  • the controller 404 may be operable for determining whether fluctuation of the monitored motor power consumption is outside of an acceptable range or error threshold (e.g ., +/- 6%, higher or lower than +/- 6%, a user-selected or adjusted positive/negative (+/-) percentage error threshold, etc. ) .
  • the controller 404 may be configured to be operable for executing a machine learning process during which the controller 404 learns steady state fluctuation of motor power consumption and from that learns or establishes a default setting ( e.g., +/- 6%, etc. ) for the acceptable range or error threshold for the fluctuation of motor power consumption.
  • the controller 404 may be further configured to allow a user to increase or decrease the machine learned default setting for the acceptable range or error threshold.
  • a user may increase the machine learned default setting (e.g., to a value higher than +/-6%, etc. ) to avoid false triggers or false positive indications of pump cavitation.
  • the controller 404 may then issue a warning and/or initiate a shutdown of the motor 436 driving the pump 440.
  • the controller 404 may be operable for determining whether there is a significant drop in the average magnitude of the monitored engine torque load that exceeds an acceptable range or threshold, e.g., 15% to 20%, higher than 20%, a user-selected percentage threshold, etc..
  • the controller 404 may be configured to be operable for executing a machine learning process (e.g., a learning algorithm, etc. ) during which the controller 404 learns or establishes a default setting ( e.g., 15% to 20%, etc. ) for the acceptable range or threshold for the significant drop in the average magnitude of the monitored engine torque load.
  • the controller 404 may be further configured to allow a user to increase or decrease the acceptable range or threshold.
  • a user may increase the machine learned default setting (e.g., to a value higher than 20%, etc. ) to avoid false triggers or false positive indications of pump cavitation.
  • the controller 404 may then issue a warning and/or initiate a shutdown of the motor 436 driving the pump 440.
  • the controller 404 may also or instead be operable for determining whether there is a significant drop in the average magnitude of the monitored motor power consumption that exceeds an acceptable range or threshold, e.g., 15% to 20%, higher than 20%, a user-selected percentage threshold, etc..
  • the controller 404 may be configured to be operable for executing a machine learning process (e.g., a learning algorithm, etc. ) during which the controller 404 learns or establishes a default setting ( e.g., 15% to 20%, etc. ) for the acceptable range or threshold for the significant drop in the average magnitude of the monitored motor power consumption.
  • the controller 404 may be further configured to allow a user to increase or decrease the acceptable range or threshold.
  • a user may increase the machine learned default setting (e.g., to a value higher than 20%, etc. ) to avoid false triggers or false positive indications of pump cavitation.
  • the controller 404 may then issue a warning and/or initiate a shutdown of the motor 436 driving the pump 440.
  • FIG. 5 shows the sensors 416 remotely spaced apart from the engine 408, motor 436, and first and second pumps 412 and 440.
  • the system 400 may also include one or more sensor(s) that are a part of, integrated with, or built into the engine 408, motor 436, first pump 412, and/or second pump 440, such as a built-in pressure sensor within the first pump 412 and/or second pump 440, etc.
  • the controller may be configured to generate:
  • the first, second, third and fourth acceptable ranges or error thresholds may be the same (e.g ., +/- 6%, higher or lower than +/- 6%, a user-selected or adjusted positive/negative (+/-) percentage error threshold, etc. ) .
  • one of or more first, second, third and fourth acceptable ranges or error thresholds may be different than one or more of the others.
  • the third and fourth acceptable ranges or error thresholds may be less than the first and second acceptable ranges or error thresholds, respectively.
  • FIG. 6 shows an exemplary Warning Alarm menu on a display of a control panel according to an exemplary embodiment of the present disclosure.
  • a 5% warning threshold has been selected for purposes of warning alarms.
  • the control panel may thus be configured to issue a warning alarm when the controller determines that fluctuation of the monitored parameter (e.g ., engine torque load, engine instantaneous fuel consumption, electric motor torque load, electric motor power consumption, combination thereof, etc. ) as compared to steady-state/normal/acceptable fluctuation level(s) exceeds the 5% warning threshold selected by the user.
  • the monitored parameter e.g ., engine torque load, engine instantaneous fuel consumption, electric motor torque load, electric motor power consumption, combination thereof, etc.
  • control panel may be configured to issue a warning alarm when the controller determines that there is a significant drop in the average magnitude of the monitored parameter (e.g. , engine torque load, engine instantaneous fuel consumption, electric motor torque load, electric motor power consumption, combination thereof, etc. ) that exceeds the 5% warning threshold selected by the user.
  • the 5% warning threshold may be increased or decreased by using touchscreen buttons along the bottom of the display.
  • the touchscreen buttons may also be used for selecting and modifying other user selectable options shown in FIG. 6 including Armed When, Engine Condition, Engine Stop, Running Ignore Delay in seconds (s), Enable Delay (s), Disable Delay (s), and Data Loss Fault.
  • FIG. 7 shows an exemplary Shutdown Alarm menu on a display of a control panel according to an exemplary embodiment of the present disclosure.
  • a 15% fault threshold has been selected for purposes of shutdown alarms.
  • the control panel may thus be configured to issue a shutdown alarm when the controller determines that the fluctuation of the monitored parameter (e.g ., engine torque load, engine instantaneous fuel consumption, electric motor torque load, electric motor power consumption, combination thereof, etc. ) as compared to steady-state/normal/acceptable fluctuation level(s) exceeds the 15% fault threshold selected by the user.
  • the monitored parameter e.g ., engine torque load, engine instantaneous fuel consumption, electric motor torque load, electric motor power consumption, combination thereof, etc.
  • control panel may be configured to issue a shutdown alarm when the controller determines that there is a significant drop in the average magnitude of the monitored parameter (e.g ., engine torque load, engine instantaneous fuel consumption, electric motor torque load, electric motor power consumption, combination thereof, etc. ) that exceeds the 15% fault threshold selected by the user.
  • the 15% fault threshold may be increased or decreased by using the touchscreen buttons along the bottom of the display.
  • the touchscreen buttons may also be used for selecting and modifying other user selectable options shown in FIG. 7 including Armed When, Engine Condition, Engine Stop, Running Ignore Delay in seconds (s), Enable Delay (s), and Data Loss Fault.
  • FIG. 8 shows an exemplary Pump Alarms menu on a display of a control panel according to an exemplary embodiment of the present disclosure. As shown in FIG. 8 , the start auto learning phase has been selected. Touchscreen buttons along the bottom of the display may also be used for selecting, modifying, and navigating to other user selectable options or menus shown in FIG. 8 including Enabled Alarms, Suction Transducer, Discharge Transducer, Warning Alarm ( FIG. 6 ), and Shutdown Alarm ( FIG. 7 ).
  • control panel display shown in FIGS. 6 , 7 , and 8 may comprise a sunlight-viewable 4.3 inch diagonal WQVGA color display with five integrated backlit display buttons.
  • Alternative embodiments may include or be used with control panels or devices having different displays and/or different user interfaces ( e.g ., pushbutton(s), joystick(s), touchscreen, etc. ) .
  • FIG. 10 is an exemplary line graph obtained or captured from a controller ( e.g., a machine-learning control panel, etc. ) while controlling a diesel-powered water pump according to an exemplary embodiment.
  • the line graph includes engine speed (RPM) along the left axis versus time offset (milliseconds) along the bottom axis.
  • the right axis of the line graph includes cavitation status, instantaneous fuel consumption (in liters/hour), and engine torque load (as a percentage of maximum engine torque load) versus the time offset along the bottom axis.
  • the cavitation status is a binary indicator, where 0 indicates that no cavitation was detected and 1 indicates that the controller detected cavitation using suction and discharge pressure sensors as well as a vibration sensor mounted to the pump.
  • the diesel engine's instantaneous fuel consumption and torque load percentage are broadcasted by most electronically-controlled engines.
  • the graph shows that when cavitation is detected by the controller (cavitation status line at a value of 1), the overall fuel consumption and torque both significantly drop in average magnitude and become very erratic (not smooth) as compared to times when cavitation is not occurring (cavitation status line at a value of 0).
  • the controller may be configured to detect the significant drop/downward fluctuation in average magnitude (e.g., 15% to 20% change, etc.
  • the controller may therebefore be able to detect pump cavitation after the machine/system has settled in at a particular RPM (e.g ., about 1900 RPMs, etc.
  • a controller is configured to be operable for detecting one or more or all of the following that may be used individually or in combination as an indicator of pump cavitation after the machine/system has settled in at a particular RPM:
  • a controller disclosed herein may comprise a CANplus TM CP1000 control panel 904 ( FIG. 9 ) that is configured to be operable for monitoring torque load and/or fuel/power consumption for fluctuation indicative of pump cavitation as disclosed herein.
  • exemplary embodiments may include a control panel having one or more features identical to or similar to a CANplus TM CP1000 control panel.
  • an exemplary embodiment may include a control panel that is a manual and autostart platform for electronically governed diesel or natural gas engines.
  • the control panel may also or instead be configured to control mechanically governed diesel engines.
  • the control panel may be configured to display graphical quad-gauge pages on a 4.3" diagonal WQVGA (480x272 pixels) liquid crystal display (LCD).
  • the control panel may be configured to display SAE J1939 parameters reported by an ECU (Engine Control Unit), including, but not limited to the following: RPM, coolant temperature, oil pressure, engine hours, voltage, exhaust emissions system state and diagnostic codes.
  • the backlit display of the control panel may be clearly readable in bright sunlight and total darkness and may be housed in a rugged IP66 rated housing.
  • the control panel may include LEDs (e.g., three LEDs, etc. ) to indicate Faults and Warnings, Emission-Related Alerts and Autostart active.
  • the control panel may include display keys (e.g., five display keys, etc. ) that are associated with a dynamic Display Key bar as well as control buttons ( e.g., eight control buttons, etc. ) .
  • the control panel may feature automatic start/stop control and start/stop modes using an Event Manager, which can start or stop based on any of the digital inputs, analog transducer inputs ( e.g., six 4-20 mA analog transducer inputs, etc. ) , a real time clock, or combinations of date/time and analog or digital inputs.
  • the control panel may have a "cruise control" feature that automatically throttles the engine to maintain a configurable level.
  • the control panel may be configured to use any one of the transducer inputs for the maintain/cruise control feature, regardless of whether that input is also being used as a start or stop event.
  • the description in this paragraph of possible features that may be included with a control panel is provided for purpose of illustration and example only. In alternative exemplary embodiments, the control panel is configured differently, e.g ., without one or more the feature(s) described in this paragraph, with different features and/or additional features than the features described in this paragraph, etc.
  • a controller disclosed herein may be configured to include or be operable for executing a machine learning process (e.g., a learning algorithm, etc. ) and a fluctuation detection process (e.g., a fluctuation detection algorithm, an adaptive detection method, etc. ) .
  • a machine learning process e.g., a learning algorithm, etc.
  • a fluctuation detection process e.g., a fluctuation detection algorithm, an adaptive detection method, etc.
  • the controller may be configured to be operable for learning, via machine learning, steady-state fluctuation level(s) for torque load and/or fuel/power consumption, thereby enabling the controller to be operable for comparing fluctuation, if any, of the monitored torque load and/or fuel/power consumption to the learned steady-state fluctuation level(s) for detecting pump cavitation.
  • the controller may be configured to algorithmically learn, via an artificial intelligence (AI) machine learning algorithm, the steady-state fluctuation level(s) for torque load and/or fuel/power consumption.
  • the controller may be configured to be operable for executing a fluctuation detection algorithm (e.g ., using standard deviations, an adaptive detection method, etc.
  • the controller may calculate and analyze standard deviation(s) of the steady-state fluctuation of the torque load and/or fuel/power consumption to detect fluctuation outliers over a period of time that are indicative of pump cavitation.
  • controller may be configured to include or be operable for executing a machine learning process as disclosed in U.S. Patent Application No. 18/220,686 , which is incorporated herein by reference in its entirety.
  • controllers disclosed herein may be used in various types of systems, including water supply systems, wastewater systems (e.g ., a sewer system bypass, sewer lift station, etc. ) , flood water management systems, industrial pumps, etc.
  • wastewater systems e.g ., a sewer system bypass, sewer lift station, etc.
  • flood water management systems e.g., a sewer system bypass, sewer lift station, etc.
  • the exemplary controllers disclosed herein may also be used in other systems for detecting cavitation pumps and/or other system components and are not limited to use in any one particular type of system, motor, engine, machine, or pump.
  • a controller is configured to be operable for monitoring at least one of torque load and/or fuel/power consumption of an engine or electric motor for fluctuation indicative of pump cavitation, thereby enabling the controller to be operable for alerting to indications of pump cavitation when fluctuation of the monitored torque load and/or fuel/power consumption indicate pump cavitation.
  • the controller is configured to be operable for detecting a significant drop in average magnitude of the monitored fuel/power consumption that is indicative of pump cavitation; and/or detecting a significant drop in average magnitude of the monitored torque load that is indicative of pump cavitation.
  • the controller is configured to be operable for detecting one or more or all of the following, which are usable individually or in combination as an indicator of pump cavitation: a significant drop in average magnitude of the monitored fuel/power consumption; and/or a significant drop in average magnitude of monitored torque load; and/or erratic, noisy, fluctuating data in the monitored fuel/power consumption; and/or erratic, noisy, fluctuating data in the monitored torque load.
  • the controller is configured to be operable for monitoring torque load for a drop in average magnitude; determining whether the drop, if any, in the average magnitude of the monitored torque load is outside of an acceptable range or error threshold for the torque load; and generating an alert if any said drop in the average magnitude of the monitored torque load is outside of the acceptable range or error threshold for the torque load.
  • the controller is configured to be operable for monitoring fuel/power consumption for a drop in average magnitude; determining whether the drop, if any, in the average magnitude of the monitored fuel/power consumption is outside of an acceptable range or error threshold for the fuel/power consumption; and generating an alert if any said drop in the average magnitude of the monitored fuel/power consumption is outside of the acceptable range or error threshold for the fuel/power consumption.
  • the controller is configured to be operable for monitoring torque load and instantaneous fuel consumption of an engine for significant drops in average magnitude indicative of pump cavitation. Or he controller is configured to be operable for monitoring torque load and power consumption of an electric motor for significant drops in average magnitude indicative of pump cavitation.
  • the fluctuation indicative of cavitation of the pump includes a significant drop in average magnitude of torque load and/or instantaneous fuel consumption of an engine; or a significant drop in average magnitude of torque load and/or power consumption of an electric motor.
  • the controller is configured to be operable for monitoring torque load for fluctuation indicative of pump cavitation; determining whether fluctuation, if any, of the monitored torque load is outside of an acceptable range or error threshold of fluctuation for the torque load; and generating an alert if any said fluctuation of the monitored torque load is outside of the acceptable range or error threshold of fluctuation for the torque load.
  • the controller is configured to be operable for monitoring fuel/power consumption for fluctuation indicative of pump cavitation; determining whether fluctuation, if any, of the monitored fuel/power consumption is outside of an acceptable range or error threshold of fluctuation for the fuel/power consumption; and generating an alert if any said fluctuation of the monitored fuel/power consumption is outside of the acceptable range or error threshold of fluctuation for the fuel/power consumption.
  • the controller may be configured to be operable for establishing, via machine learning, a setting or default for the acceptable range or error threshold for fluctuation of torque load; and/or establishing, via machine learning, a setting or default for the acceptable range or error threshold for fluctuation of fuel/power consumption.
  • the controller is configured to be operable for monitoring both torque load and fuel/power consumption of the engine or electric motor for fluctuation indicative of pump cavitation. And the controller is configured to be operable for detecting pump cavitation by using only the monitored torque load and the monitored fuel/power consumption without requiring reliance upon any existing or additional vibration sensors for detecting pump cavitation.
  • the controller is configured to be operable for monitoring either torque load or fuel/power consumption, but not both, for fluctuation indicative of pump cavitation. And the controller is configured to be operable for detecting pump cavitation by using only the monitored torque load or the monitored fuel/power consumption without requiring reliance upon any existing or additional vibration sensors for detecting pump cavitation.
  • the controller includes a user interface configured to allow one or more user inputs including selection of either or both of the torque load and/or fuel/power consumption to be monitored for fluctuation indicative of pump cavitation; and/or an acceptable range or error threshold for fluctuation of torque load, which may be an adjustment to a default setting established or machine learned by the controller for the acceptable range or error threshold for fluctuation of torque load; and/or an acceptable range or error threshold for fluctuation of fuel/power consumption, which may be an adjustment to a default setting established or machine learned by the controller for the acceptable range or error threshold for fluctuation of fuel/power consumption.
  • the user interface may be configured to allow one or more user inputs including a positive/negative (+/-) percentage acceptable range or error threshold for fluctuation of torque load; and/or a positive/negative (+/-) percentage acceptable range or error threshold for fluctuation of fuel/power consumption.
  • the controller is configured to compare fluctuation, if any, of the monitored torque load and/or fuel/power consumption to steady-state fluctuation level(s) to determine whether any said fluctuation of the monitored torque load and/or fuel/power consumption deviated more than a positive/negative (+/-) percentage acceptable range or error threshold from the steady-state fluctuation level(s). And the controller is configured to be operable for generating an alert if any said fluctuation of the monitored torque load and/or fuel/power consumption deviates more than the positive/negative (+/-) percentage acceptable range or error threshold from the steady-state fluctuation level(s).
  • the controller is configured to be operable for learning, via machine learning, steady-state fluctuation level(s) for torque load and/or fuel/power consumption, thereby enabling the controller to be operable for comparing fluctuation, if any, of the monitored torque load and/or fuel/power consumption to the learned steady-state fluctuation level(s) for detecting pump cavitation.
  • the controller may be configured to algorithmically learn, via an artificial intelligence (AI) machine learning algorithm, the steady-state fluctuation level(s) for torque load and/or fuel/power consumption.
  • AI artificial intelligence
  • the controller is configured to be operable for executing a fluctuation detection algorithm to detect fluctuation outliers of the torque load and/or fuel/power consumption over a period of time that are indicative of pump cavitation. Additionally, or alternatively, the controller is configured to be operable for calculating and analyzing standard deviation(s) of steady-state fluctuation of the torque load and/or fuel/power consumption to detect fluctuation outliers over a period of time that are indicative of pump cavitation.
  • a system comprises a controller as disclosed herein.
  • the system further comprises a pump, an electric motor configured to be operable for driving the pump, and a variable frequency drive (VFD) configured to be operable for controlling a speed of the electric motor.
  • VFD variable frequency drive
  • the controller is configured to be operable for controlling the variable frequency drive; receiving electric motor torque load information and/or electric motor power consumption information; and monitoring the electric motor torque load information and/or electric motor power consumption information for fluctuation indicative of cavitation of the pump.
  • the controller is further configured to be operable for generating an alert if any fluctuation of the monitored electric motor torque load information is outside of an acceptable range or error threshold of fluctuation for the electric motor torque load, and/or generating an alert if any fluctuation of the monitored electric motor power consumption information is outside of an acceptable range or error threshold of fluctuation for the electric motor power consumption.
  • a system comprises a controller as disclosed herein.
  • the system further comprises a pump and an engine including an electronic control unit.
  • the engine is configured to be operable for driving the pump.
  • the controller is configured to be operable for receiving engine torque load information and/or engine instantaneous fuel consumption from the electronic control unit of the engine; and monitoring at least one of the engine torque load information and/or engine instantaneous fuel consumption information, received from the engine's electronic control unit, for fluctuation indicative of cavitation of the pump.
  • controller is further configured to be operable for; and generating an alert if any fluctuation of the monitored engine torque load information is outside of an acceptable range or error threshold of fluctuation for the engine torque load, and/or generating an alert if any fluctuation of the monitored engine instantaneous fuel consumption is outside of an acceptable range or error threshold of fluctuation for the engine instantaneous fuel consumption.
  • exemplary methods that comprise monitoring at least one of torque load and/or fuel/power consumption of an engine or electric motor for fluctuation indicative of pump cavitation.
  • the method comprises determining whether fluctuation, if any, of the monitored torque load is outside of an acceptable range or error threshold of fluctuation for the torque load; and generating an alert if any said fluctuation of the monitored torque load is outside of the acceptable range or error threshold of fluctuation for the torque load.
  • the method comprises determining whether fluctuation, if any, of the monitored fuel/power consumption is outside of an acceptable range or error threshold of fluctuation for the engine fuel/power consumption; and generating an alert if any said fluctuation of the monitored fuel/power consumption is outside of the acceptable range or error threshold of fluctuation for the fuel/power consumption.
  • the method includes monitoring engine torque load for a drop in average magnitude; determining whether the drop, if any, in the average magnitude of the monitored engine torque load is outside of an acceptable range or error threshold for the engine torque load; and generating an alert if any said drop in the average magnitude of the monitored engine torque load is outside of the acceptable range or error threshold for the engine torque load.
  • the method includes monitoring engine instantaneous fuel consumption for a drop in average magnitude; determining whether the drop, if any, in the average magnitude of the monitored engine instantaneous fuel consumption is outside of an acceptable range or error threshold for the engine instantaneous fuel consumption; and generating an alert if any said drop in the average magnitude of the monitored engine instantaneous fuel consumption is outside of the acceptable range or error threshold for the engine instantaneous fuel consumption.
  • the method includes monitoring electric motor torque load for a drop in average magnitude; determining whether the drop, if any, in the average magnitude of the monitored electric motor torque load is outside of an acceptable range or error threshold for the electric motor torque load; and generating an alert if any said drop in the average magnitude of the monitored electric motor torque load is outside of the acceptable range or error threshold for the electric motor torque load. Additionally, or alternatively, the method includes monitoring electric motor power consumption for a drop in average magnitude; determining whether the drop, if any, in the average magnitude of the monitored electric motor power consumption is outside of an acceptable range or error threshold for the electric motor power consumption; and generating an alert if any said drop in the average magnitude of the monitored electric motor power consumption is outside of the acceptable range or error threshold for the electric motor power consumption.
  • a non-transitory computer-readable storage media including executable instructions, that when executed by at least one processor, cause a controller to monitor at least one of torque load and/or fuel/power consumption of an engine or electric motor for fluctuation indicative of pump cavitation, thereby enabling the controller to be operable for alerting to indications of pump cavitation when fluctuation of the monitored torque load and/or fuel/power consumption indicate pump cavitation.
  • the executable instructions include executable instructions, that when executed by the at least one processor, cause the controller to be operable for:
  • the executable instructions include executable instructions, that when executed by the at least one processor, cause the controller to be operable for:
  • a controller monitoring at least one of torque load and/or fuel/power consumption of an engine or motor for fluctuation (e.g. , significant drop/downward fluctuation in average magnitude and/or erratic, noisy, fluctuating data, etc. ) indicative of pump cavitation, thereby enabling the controller to be operable for alerting to indications of pump cavitation when fluctuation of the monitored torque load and/or fuel/power consumption indicate pump cavitation.
  • fluctuation e.g. , significant drop/downward fluctuation in average magnitude and/or erratic, noisy, fluctuating data, etc.
  • Exemplary embodiments may include one or more processors and memory coupled to (and in communication with) the one or more processors.
  • a processor may include one or more processing units (e.g., in a multi-core configuration, etc. ) such as, and without limitation, a central processing unit (CPU), a microcontroller, a reduced instruction set computer (RISC) processor, an application specific integrated circuit (ASIC), a programmable logic device (PLD), a gate array, and/or any other circuit or processor capable of the functions described herein.
  • CPU central processing unit
  • RISC reduced instruction set computer
  • ASIC application specific integrated circuit
  • PLD programmable logic device
  • the functions described herein, in some embodiments, may be described in computer executable instructions stored on a computer readable media, and executable by at least one processor.
  • the computer readable media is a non-transitory computer readable storage medium.
  • such computer-readable media can include dynamic random access memory (DRAM), static random access memory (SRAM), read only memory (ROM), erasable programmable read only memory (EPROM), solid state devices, flash drives, CD-ROMs, thumb drives, floppy disks, tapes, hard disks, other optical disk storage, magnetic disk storage or other magnetic storage devices, any other type of volatile or nonvolatile physical or tangible computer-readable media, or other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. Combinations of the above should also be included within the scope of computer-readable media.
  • Computer-executable instructions may be stored in the memory for execution by a processor to particularly cause the processor to perform one or more of the functions described herein, such that the memory is a physical, tangible, and non-transitory computer readable storage media. Such instructions often improve the efficiencies and/or performance of the processor that is performing one or more of the various operations herein. It should be appreciated that the memory may include a variety of different memories, each implemented in one or more of the functions or processes described herein.
  • one or more aspects of the present disclosure transform a general-purpose computing device into a special-purpose computing device when configured to perform the functions, methods, and/or processes described herein.
  • Example embodiments are provided so that this disclosure will be thorough and will fully convey the scope to those who are skilled in the art. Numerous specific details are set forth such as examples of specific components, devices, and methods, to provide a thorough understanding of embodiments of the present disclosure. It will be apparent to those skilled in the art that specific details need not be employed, that example embodiments may be embodied in many different forms, and that neither should be construed to limit the scope of the disclosure. In some example embodiments, well-known processes, well-known device structures, and well-known technologies are not described in detail.
  • parameter X may have a range of values from about A to about Z.
  • disclosure of two or more ranges of values for a parameter subsume all possible combination of ranges for the value that might be claimed using endpoints of the disclosed ranges.
  • parameter X is exemplified herein to have values in the range of 1 - 10, or 2 - 9, or 3 - 8, it is also envisioned that Parameter X may have other ranges of values including 1 - 9, 1 - 8, 1 - 3, 1 - 2, 2 - 10, 2 - 8, 2 - 3, 3 - 10, and 3 - 9.
  • first, second, third, etc. may be used herein to describe various elements, components, regions, layers and/or sections, these elements, components, regions, layers and/or sections should not be limited by these terms. These terms may be only used to distinguish one element, component, region, layer or section from another region, layer or section. Terms such as “first,” “second,” and other numerical terms when used herein do not imply a sequence or order unless clearly indicated by the context. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the teachings of the example embodiments.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Computer Hardware Design (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Control Of Positive-Displacement Pumps (AREA)
EP23209440.9A 2022-11-18 2023-11-13 Kavitationsdetektion unter verwendung von drehmomentbelastung und/oder sofortigem kraftstoffverbrauch Pending EP4372221A1 (de)

Applications Claiming Priority (3)

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US202263426559P 2022-11-18 2022-11-18
US202363546128P 2023-10-27 2023-10-27
US18/387,285 US20240068910A1 (en) 2022-07-12 2023-11-06 Cavitation Detection Using Torque Load and/or Instantaneous Fuel Consumption

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EP4372221A1 true EP4372221A1 (de) 2024-05-22

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6709240B1 (en) * 2002-11-13 2004-03-23 Eaton Corporation Method and apparatus of detecting low flow/cavitation in a centrifugal pump
US7489997B2 (en) * 2006-05-12 2009-02-10 Hitachi, Ltd. Diagnostic apparatus for internal combustion engine
EP2196678B1 (de) * 2008-12-09 2012-07-11 ABB Oy Verfahren und System zum Erkennen der Kavitation einer Pumpe und Frequenzwandler
EP2500579A1 (de) * 2011-03-17 2012-09-19 Siemens Aktiengesellschaft Erkennung von Kavitation und Mitführung von Gas in einer elektrischen Kreiselpumpe
US20180038216A1 (en) * 2016-08-05 2018-02-08 Caterpillar Inc. Hydraulic fracturing system and method for detecting pump failure of same
EP4299908A1 (de) * 2022-06-27 2024-01-03 Hamilton Sundstrand Corporation Motorbetriebene pumpe mit prognostischer gesundheitsüberwachung auf basis von motoreigenschaften
WO2024015377A1 (en) * 2022-07-12 2024-01-18 Cattron North America, Inc. Controllers with machine learning and systems including the same

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6709240B1 (en) * 2002-11-13 2004-03-23 Eaton Corporation Method and apparatus of detecting low flow/cavitation in a centrifugal pump
US7489997B2 (en) * 2006-05-12 2009-02-10 Hitachi, Ltd. Diagnostic apparatus for internal combustion engine
EP2196678B1 (de) * 2008-12-09 2012-07-11 ABB Oy Verfahren und System zum Erkennen der Kavitation einer Pumpe und Frequenzwandler
EP2500579A1 (de) * 2011-03-17 2012-09-19 Siemens Aktiengesellschaft Erkennung von Kavitation und Mitführung von Gas in einer elektrischen Kreiselpumpe
US20180038216A1 (en) * 2016-08-05 2018-02-08 Caterpillar Inc. Hydraulic fracturing system and method for detecting pump failure of same
EP4299908A1 (de) * 2022-06-27 2024-01-03 Hamilton Sundstrand Corporation Motorbetriebene pumpe mit prognostischer gesundheitsüberwachung auf basis von motoreigenschaften
WO2024015377A1 (en) * 2022-07-12 2024-01-18 Cattron North America, Inc. Controllers with machine learning and systems including the same

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