Patents by Inventor Rustu CESUR
Rustu CESUR has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11608610Abstract: A hydraulic system may include a first actuator to control a first linkage member, a second actuator to control a second linkage member, a first primary hydraulic circuit and a first secondary hydraulic circuit that include the first actuator, a second primary hydraulic circuit and a second secondary hydraulic circuit that include the second actuator, a first pump to cause fluid to flow through the first primary hydraulic circuit and the second secondary hydraulic circuit, a second pump to cause fluid to flow through the second primary hydraulic circuit and the first secondary hydraulic circuit, and a controller. The controller may be configured to determine that an operator assistance mode is enabled, and cause closing of a first valve that controls fluid flow through the first secondary hydraulic circuit and a second valve that controls fluid flow through the second secondary hydraulic circuit.Type: GrantFiled: August 4, 2021Date of Patent: March 21, 2023Assignee: Caterpillar Inc.Inventors: Adam Martin Nackers, Rustin Glenn Metzger, Chris Rustu Cesur, Steven D Spencer
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Publication number: 20230043231Abstract: A hydraulic system may include a first actuator to control a first linkage member, a second actuator to control a second linkage member, a first primary hydraulic circuit and a first secondary hydraulic circuit that include the first actuator, a second primary hydraulic circuit and a second secondary hydraulic circuit that include the second actuator, a first pump to cause fluid to flow through the first primary hydraulic circuit and the second secondary hydraulic circuit, a second pump to cause fluid to flow through the second primary hydraulic circuit and the first secondary hydraulic circuit, and a controller. The controller may be configured to determine that an operator assistance mode is enabled, and cause closing of a first valve that controls fluid flow through the first secondary hydraulic circuit and a second valve that controls fluid flow through the second secondary hydraulic circuit.Type: ApplicationFiled: August 4, 2021Publication date: February 9, 2023Applicant: Caterpillar Inc.Inventors: Adam Martin NACKERS, Rustin Glenn METZGER, Chris Rustu CESUR, Steven D. SPENCER
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Patent number: 9897120Abstract: A hydraulic system for a machine is disclosed. The system may have a pump and a motor driven by pressurized fluid from the pump. An accumulator is configured to receive fluid discharged from the motor and to discharge fluid to the motor. The system may include a first valve to selectively communicate the higher pressure of conduits coupled between the pump and motor to the accumulator. A second valve and a third valve can be used to facilitate charging and discharging of the accumulator. The system may include a controller configured to implement a plurality of modes of operation, which each mode of operation may include a different combination of motor deceleration and motor acceleration segments during which the accumulator receives and discharges fluid, respectively. An input may be used to determine the segment of the work cycle.Type: GrantFiled: June 29, 2015Date of Patent: February 20, 2018Assignee: Caterpillar Inc.Inventors: Jiao Zhang, Tonglin Shang, Peter Spring, Pengfei Ma, Randal Peterson, Rustu Cesur
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Patent number: 9388828Abstract: A hydraulic control system is disclosed for use with a machine. The hydraulic control system may have a tank, a pump, a swing motor, and at least one control. The hydraulic control system may further have an accumulator configured to receive fluid from and supply fluid to the swing motor, a charge valve movable to allow fluid flow from the swing motor into the accumulator, and a discharge valve movable to allow fluid flow from the accumulator to the swing motor. The hydraulic control system may additionally have a controller in communication with the at least one control valve, the charge valve, and the discharge valve. The controller may be configured to detect an acceleration of the swing motor, selectively cause the discharge valve to assist the acceleration, and selectively move the charge valve to an open position to recover energy associated with pressure spikes occurring during the acceleration.Type: GrantFiled: December 18, 2012Date of Patent: July 12, 2016Assignee: Caterpillar Inc.Inventors: Bryan J. Hillman, Jiao Zhang, Lawrence C. Tognetti, Peter Spring, Rustu Cesur, Tonglin Shang
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Patent number: 9328744Abstract: A hydraulic control system for a machine is disclosed. The hydraulic control system may have a tank, a pump, and a fluid actuator. The hydraulic control system may further have an accumulator configured to selectively receive pressurized fluid discharged from the fluid actuator and selectively supply pressurized fluid to the fluid actuator. The hydraulic control system may also have a pressure sensor configured to generate a signal indicative of a pressure of the accumulator, a charge valve, a discharge valve, and a controller in communication with the control valve, the charge valve, and the discharge valve. The controller may be configured to detect stall of the fluid actuator, to make a comparison of the pressure of the accumulator with a threshold pressure, and to selectively move the charge valve to charge the accumulator or move the discharge valve to discharge the accumulator during the stall based on the comparison.Type: GrantFiled: December 18, 2012Date of Patent: May 3, 2016Assignee: Caterpillar Inc.Inventors: Rustu Cesur, Lawrence J. Tognetti, Pengfei Ma, Jiao Zhang, Tonglin Shang
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Patent number: 9206583Abstract: A void protection system for a mining shovel having an operator input device includes an independent metering valve assembly including one or more fluid source-cylinder valves for fluidly connecting the fluid source to the hydraulic cylinder. The system also includes a sensor assembly for monitoring the fluid pressure within the rod end and the head end of the hydraulic cylinder, and a control module. The control module is configured to monitor movement of the operator input device, monitor pressure within the hydraulic cylinder, increase the opening of the corresponding fluid source-cylinder valve and increase fluid flow from the fluid source to fill corresponding end of the hydraulic cylinder until pressure in the corresponding end of the hydraulic cylinder is above a first threshold pressure.Type: GrantFiled: April 10, 2013Date of Patent: December 8, 2015Assignee: Caterpillar Global Mining LLCInventors: Matthew J. Beschorner, Bryan A. Johnson, Brett J. Janson, Brandon Z. Barnes, Rustu Cesur
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Patent number: 9187878Abstract: A hydraulic control system is disclosed. The hydraulic control system may have an input device to generate a first signal indicative of a desired swing motor movement, and a control valve configured to selectively pass fluid to the swing motor and drain from the swing motor to drive the swing motor based on the first signal. The hydraulic control system may also have a pressure sensor to generate a second signal indicative of a swing motor pressure, a speed sensor configured to a third signal indicative of a swing motor speed, and a controller configured to make a comparison of at least one of the swing motor speed and the swing motor pressure with a threshold speed and a threshold pressure, and open the control valve to drain fluid from the swing motor to the tank based on the comparison when the input device is in a neutral condition.Type: GrantFiled: December 13, 2012Date of Patent: November 17, 2015Assignee: Caterpillar Inc.Inventors: Tonglin Shang, Rustu Cesur, Bryan J. Hillman, Jiao Zhang
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Publication number: 20150300384Abstract: A hydraulic system for a machine is disclosed. The system may have a pump and a motor driven by pressurized fluid from the pump. An accumulator is configured to receive fluid discharged from the motor and to discharge fluid to the motor. The system may include a first valve to selectively communicate the higher pressure of conduits coupled between the pump and motor to the accumulator. A second valve and a third valve can be used to facilitate charging and discharging of the accumulator. The system may include a controller configured to implement a plurality of modes of operation, which each mode of operation may include a different combination of motor deceleration and motor acceleration segments during which the accumulator receives and discharges fluid, respectively. An input may be used to determine the segment of the work cycle.Type: ApplicationFiled: June 29, 2015Publication date: October 22, 2015Applicant: Caterpillar Inc.Inventors: Jiao Zhang, Tonglin Shang, Peter Spring, Pengfei Ma, Randal Peterson, Rustu Cesur
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Patent number: 9145660Abstract: A hydraulic control system for a machine is disclosed. The hydraulic control system may have a tank, a pump configured to draw fluid from the tank and pressurize the fluid, an actuator, and a control valve configured to direct fluid from the pump to the actuator and from the actuator to the tank to move the actuator. The hydraulic system may also have a main relief valve movable away from a closed position to pass pressurized fluid to the tank when a pressure of the fluid directed to the actuator exceeds a first threshold pressure, and a controller in communication with the pump. The controller may be configured to selectively reduce a displacement of the pump after the main relief valve has moved away from the closed position when the pressure of the fluid directed to the actuator exceeds a second threshold pressure.Type: GrantFiled: December 13, 2012Date of Patent: September 29, 2015Assignee: Caterpillar Inc.Inventors: Randal N. Peterson, Aleksandar M. Egelja, Rustu Cesur
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Patent number: 9091286Abstract: A hydraulic control system is disclosed for use with a machine. The hydraulic control system may have a tank, a pump, an actuator, and a control valve configured to direct fluid from the pump to the actuator and from the actuator to the tank. The hydraulic control system may also have a pressure sensor to generate a first signal indicative of a pressure differential across the control valve, an operator input device to generate a second signal indicative of a desired movement of the actuator, and a controller. The controller may be configured to make a first determination of an opening amount of the control valve based on the second signal, and to make a second determination based on the first signal of whether the opening amount will result in overspeeding of the actuator. The controller may also be configured to reduce the opening amount based on the second determination.Type: GrantFiled: December 18, 2012Date of Patent: July 28, 2015Assignee: Caterpillar Inc.Inventors: Rustu Cesur, Jiao Zhang, Tonglin Shang, Bryan J. Hillman, Peter Spring, Lawrence J. Tognetti, Pengfei Ma
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Patent number: 9086081Abstract: A hydraulic control system is disclosed for use with a machine. The hydraulic control system may have a tank, a pump, a swing motor, and at least one control valve configured to control fluid flow between the pump, the swing motor, and the tank. The hydraulic system may also have an accumulator configured to selectively receive pressurized fluid discharged from the swing motor and selectively supply pressurized fluid to the swing motor, at least one accumulator valve, and a controller. The controller may be configured to receive input indicative of a difference between desired and actual speeds of the swing motor, and determine if the swing motor is accelerating or decelerating based on the difference. The controller may also be configured to control the at least one accumulator valve to cause the accumulator to selectively receive or supply pressurized fluid only when the swing motor is accelerating or decelerating.Type: GrantFiled: December 18, 2012Date of Patent: July 21, 2015Assignee: Caterpillar Inc.Inventors: Jiao Zhang, Pengfei Ma, Tonglin Shang, Rustu Cesur, Bryan J. Hillman, Peter Spring, Lawrence J. Tognetti, Randal N. Peterson, Dayao Chen
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Patent number: 9068575Abstract: A hydraulic control system for a machine is disclosed. The hydraulic control system may have a work tool movable to perform an excavation cycle having a plurality of segments, a motor configured to swing the work tool during the excavation cycle, and a pump configured to pressurize fluid directed to drive the motor. The hydraulic control system may also have at least one accumulator configured to selectively receive fluid discharged from the motor and to discharge fluid to the motor during the plurality of segments, and a controller configured to implement a plurality of modes of operation. Each of the plurality of modes of operation includes a different combination of segments during which the at least one accumulator receives and discharges fluid.Type: GrantFiled: June 28, 2011Date of Patent: June 30, 2015Assignee: Caterpillar Inc.Inventors: Jiao Zhang, Tonglin Shang, Peter Spring, Pengfei Ma, Randal N. Peterson, Rustu Cesur
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Publication number: 20140308106Abstract: A void protection system for a mining shovel having an operator input device includes an independent metering valve assembly including one or more fluid source-cylinder valves for fluidly connecting the fluid source to the hydraulic cylinder. The system also includes a sensor assembly for monitoring the fluid pressure within the rod end and the head end of the hydraulic cylinder, and a control module. The control module is configured to monitor movement of the operator input device, monitor pressure within the hydraulic cylinder, increase the opening of the corresponding fluid source-cylinder valve and increase fluid flow from the fluid source to fill corresponding end of the hydraulic cylinder until pressure in the corresponding end of the hydraulic cylinder is above a first threshold pressure.Type: ApplicationFiled: April 10, 2013Publication date: October 16, 2014Applicant: Caterpillar Global Mining LLCInventors: Matthew J. Beschorner, Bryan A. Johnson, Brett J. Janson, Brandon Z. Barnes, Rustu Cesur
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Patent number: 8813486Abstract: A hydraulic control system for a machine is disclosed. The hydraulic control system may have a hydraulic circuit, and a pump configured to supply pressurized fluid to the hydraulic circuit. The hydraulic control system may also have a first fluid actuator fluidly connected to receive pressurized fluid from the hydraulic circuit, a first valve arrangement movable to control a flow of fluid to the first fluid actuator, a second fluid actuator fluidly connected to receive pressurized fluid from the hydraulic circuit, and a second valve arrangement movable to control a flow of fluid to the second fluid actuator. The hydraulic control system may additionally have a controller in communication with the first and second valve arrangements. the controller may be configured to make a determination of a stall condition of the first fluid actuator, and to selectively change a flow command directed to the second valve arrangement based on the determination.Type: GrantFiled: February 28, 2011Date of Patent: August 26, 2014Assignee: Caterpillar Inc.Inventors: Grant S. Peterson, Randall T. Anderson, Rustu Cesur, Jason L. Brinkman
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Patent number: 8726647Abstract: A hydraulic control system for a machine is disclosed. The hydraulic control system may have a hydraulic circuit, a pump configured to supply pressurized fluid, and a first sensor configured to generate a first signal indicative of a pressure of the hydraulic circuit. The hydraulic circuit may also have a first fluid actuator fluidly connected to receive pressurized fluid from the hydraulic circuit, a second sensor configured to generate a second signal indicative of a velocity of the first fluid actuator, and a controller in communication with the first and second sensors. The controller may be configured to receive an input indicative of a desired flow rate for the first fluid actuator, to determine an actual flow rate of the first fluid actuator based on the second signal, and to determine a stall condition of the first fluid actuator based on the desired flow rate, the actual flow rate, and the first signal.Type: GrantFiled: February 28, 2011Date of Patent: May 20, 2014Assignee: Caterpillar Inc.Inventors: Grant S. Peterson, Randall T. Anderson, Rustu Cesur, Jason L. Brinkman
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Publication number: 20140060031Abstract: A hydraulic control system for a machine is disclosed. The hydraulic control system may have a tank, a pump, and a fluid actuator. The hydraulic control system may further have an accumulator configured to selectively receive pressurized fluid discharged from the fluid actuator and selectively supply pressurized fluid to the fluid actuator. The hydraulic control system may also have a pressure sensor configured to generate a signal indicative of a pressure of the accumulator, a charge valve, a discharge valve, and a controller in communication with the control valve, the charge valve, and the discharge valve. The controller may be configured to detect stall of the fluid actuator, to make a comparison of the pressure of the accumulator with a threshold pressure, and to selectively move the charge valve to charge the accumulator or move the discharge valve to discharge the accumulator during the stall based on the comparison.Type: ApplicationFiled: December 18, 2012Publication date: March 6, 2014Applicant: CATERPILLAR INC.Inventors: Rustu Cesur, Lawrence J. Tognetti, Pengfei Ma, Jiao Zhang, Tonglin Shang
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Publication number: 20140060020Abstract: A hydraulic control system for a machine is disclosed. The hydraulic control system may have a tank, a pump configured to draw fluid from the tank and pressurize the fluid, an actuator, and a control valve configured to direct fluid from the pump to the actuator and from the actuator to the tank to move the actuator. The hydraulic system may also have a main relief valve movable away from a closed position to pass pressurized fluid to the tank when a pressure of the fluid directed to the actuator exceeds a first threshold pressure, and a controller in communication with the pump. The controller may be configured to selectively reduce a displacement of the pump after the main relief valve has moved away from the closed position when the pressure of the fluid directed to the actuator exceeds a second threshold pressure.Type: ApplicationFiled: December 13, 2012Publication date: March 6, 2014Applicant: CATERPILLAR INC.Inventors: Randal N. PETERSON, Aleksandar M. EGELJA, Rustu CESUR
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Publication number: 20140060021Abstract: A hydraulic control system is disclosed. The hydraulic control system may have an input device to generate a first signal indicative of a desired swing motor movement, and a control valve configured to selectively pass fluid to the swing motor and drain from the swing motor to drive the swing motor based on the first signal. The hydraulic control system may also have a pressure sensor to generate a second signal indicative of a swing motor pressure, a speed sensor configured to a third signal indicative of a swing motor speed, and a controller configured to make a comparison of at least one of the swing motor speed and the swing motor pressure with a threshold speed and a threshold pressure, and open the control valve to drain fluid from the swing motor to the tank based on the comparison when the input device is in a neutral condition.Type: ApplicationFiled: December 13, 2012Publication date: March 6, 2014Applicant: Caterpillar Inc.Inventors: Tonglin SHANG, Rustu CESUR, Bryan J. HILLMAN, Jiao ZHANG
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Publication number: 20140060022Abstract: A hydraulic control system is disclosed for use with a machine. The hydraulic control system may have a tank, a pump, a swing motor, and at least one control. The hydraulic control system may further have an accumulator configured to receive fluid from and supply fluid to the swing motor, a charge valve movable to allow fluid flow from the swing motor into the accumulator, and a discharge valve movable to allow fluid flow from the accumulator to the swing motor. The hydraulic control system may additionally have a controller in communication with the at least one control valve, the charge valve, and the discharge valve. The controller may be configured to detect an acceleration of the swing motor, selectively cause the discharge valve to assist the acceleration, and selectively move the charge valve to an open position to recover energy associated with pressure spikes occurring during the acceleration.Type: ApplicationFiled: December 18, 2012Publication date: March 6, 2014Applicant: CATERPILLAR INC.Inventors: Bryan J. HILLMAN, Jiao ZHANG, Lawrence C. TOGNETTI, Peter SPRING, Rustu CESUR, Tonglin SHANG
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Publication number: 20140067092Abstract: A control system is disclosed for use with an excavation machine. The control system may have a work tool, an operator input device to receive input indicative of a desired movement of the work tool, at least one actuator, and at least one sensor associated with at least one of the work tool and the at least one actuator. The control system may also have a controller in communication with the operator input, the at least one actuator, and the at least one sensor. The controller may be configured to make a classification of a current operation of the machine as one of a plurality of known operations based on a signal from at least one of the operator input device and the at least one sensor. The controller may be further configured to adjust an operational parameter of the at least one actuator based on the classification.Type: ApplicationFiled: December 13, 2012Publication date: March 6, 2014Applicant: Caterpillar Inc.Inventors: Rustu CESUR, Bryan J. HILLMAN, Aleksandar M. EGELJA