Patents by Inventor Pavan Chakravarthy Nandigama
Pavan Chakravarthy Nandigama 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: 10393609Abstract: A system includes a cylinder, a piston, a sensor configured to detect vibrations of the cylinder, piston, or both that correspond with varying pressures within the cylinder, and a controller coupled to the sensor. The controller is configured to receive a first signal from the sensor corresponding with first vibrations of the cylinder and to deduce from the first signal a first operating value of a parameter indicative of peak firing pressure at a first time, to compare the first operating value with a baseline value of the parameter indicative of peak firing pressure to detect a change in peak firing pressure, to receive a second signal from the sensor corresponding with second vibrations of the cylinder and to deduce from the second signal a second operating value of the parameter indicative of peak firing pressure at a second time, and to compare the second operating value with the baseline value to confirm the change in peak firing pressure.Type: GrantFiled: July 2, 2015Date of Patent: August 27, 2019Assignee: AI ALPINE US BIDCO INC.Inventors: Pavan Chakravarthy Nandigama, Sujith Mohan, Amit Shrivastava, Chandan Kumar, Jeffrey Jacob Bizub
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Patent number: 10378994Abstract: Condition based engine parts (e.g., movable engine parts) monitoring is disclosed. The techniques may enable detecting cracks present in engine parts while the engine is operational. In one embodiment, a system includes a wireless sensor configured to be disposed on a movable part internal to a machine and communicate wirelessly and a controller that includes a processor. The processor may be configured to initiate communication with the wireless sensor by receiving a wireless signal indicative of a frequency of vibration of the internal movable part from the wireless sensor, to obtain an acceptable threshold range of vibrations for the internal movable part from one or more data sources, to determine whether the frequency of vibration is within the acceptable threshold range of vibrations for the internal movable part, and to initiate preventative actions when the frequency is not within the acceptable threshold range.Type: GrantFiled: March 5, 2015Date of Patent: August 13, 2019Assignee: AI ALPINE US BIDCO INC.Inventors: Venkatesh Raman, Pavan Chakravarthy Nandigama
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Patent number: 10288003Abstract: A system includes a reciprocating engine having a piston disposed in a cylinder, an intake valve, an exhaust valve, and an exhaust flow path downstream of the exhaust valve. The system also includes a first sensor configured to obtain a first feedback indicative of an exhaust gas parameter in the exhaust flow path. The system also includes a controller configured to identify a valve wear condition of at least one of the intake valve or the exhaust valve at least partially based on the first feedback from the first sensor.Type: GrantFiled: October 27, 2017Date of Patent: May 14, 2019Assignee: General Electric CompanyInventors: Amit Shrivastava, Chandan Kumar, Pavan Chakravarthy Nandigama
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Publication number: 20190128203Abstract: A system includes a reciprocating engine having a piston disposed in a cylinder, an intake valve, an exhaust valve, and an exhaust flow path downstream of the exhaust valve. The system also includes a first sensor configured to obtain a first feedback indicative of an exhaust gas parameter in the exhaust flow path. The system also includes a controller configured to identify a valve wear condition of at least one of the intake valve or the exhaust valve at least partially based on the first feedback from the first sensor.Type: ApplicationFiled: October 27, 2017Publication date: May 2, 2019Inventors: Amit Shrivastava, Chandan Kumar, Pavan Chakravarthy Nandigama
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Patent number: 10077730Abstract: The present disclosure includes systems and methods for monitoring a prechamber of an engine. In one embodiment, a system includes a combustion engine having a combustion chamber and a prechamber, where the prechamber is configured to direct a flame toward the combustion chamber, a fuel supply valve configured to adjust a flow of a fuel toward the prechamber, a prechamber valve configured to receive the fuel into the prechamber, a knock sensor coupled to the combustion engine, and a controller. The controller is configured to control operations of the combustion engine, to receive a signal from the knock sensor, to determine a combustion parameter based at least on the signal, to determine a condition of one or both of the prechamber and the prechamber valve based at least on the combustion parameter, and to adjust the fuel supply valve based at least on the condition.Type: GrantFiled: December 31, 2015Date of Patent: September 18, 2018Assignee: GENERAL ELECTRIC COMPANYInventors: Rajesh Kumar Jayaram, Amit Shrivastava, Chandan Kumar, Pavan Chakravarthy Nandigama
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Patent number: 9932893Abstract: A system includes a cast mounting tower having an upper portion configured to support an engine, a generator, or any combination thereof and a plurality of ribs coupled to and supporting the upper portion of the mounting tower. The plurality of ribs extend from the upper portion in a direction crosswise to the upper portion, the upper portion and the plurality of ribs are integrally coupled as a one-piece structure of the cast mounting tower, and the cast mounting tower is configured to couple to a frame.Type: GrantFiled: May 12, 2015Date of Patent: April 3, 2018Assignee: GENERAL ELECTRIC COMPANYInventors: Pavan Chakravarthy Nandigama, Peter Watson, Manikandan Suriyanarayanan
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Publication number: 20170191439Abstract: The present disclosure includes systems and methods for monitoring a prechamber of an engine. In one embodiment, a system includes a combustion engine having a combustion chamber and a prechamber, where the prechamber is configured to direct a flame toward the combustion chamber, a fuel supply valve configured to adjust a flow of a fuel toward the prechamber, a prechamber valve configured to receive the fuel into the prechamber, a knock sensor coupled to the combustion engine, and a controller. The controller is configured to control operations of the combustion engine, to receive a signal from the knock sensor, to determine a combustion parameter based at least on the signal, to determine a condition of one or both of the prechamber and the prechamber valve based at least on the combustion parameter, and to adjust the fuel supply valve based at least on the condition.Type: ApplicationFiled: December 31, 2015Publication date: July 6, 2017Inventors: Rajesh Kumar Jayaram, Amit Shrivastava, Chandan Kumar, Pavan Chakravarthy Nandigama
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Publication number: 20170175661Abstract: A control system includes a first and second sensor configured to monitor a first type of operating condition of a first and second cylinder of an engine, respectively, a feedback component configured to monitor a second type of operating condition of the engine, and a controller communicatively coupled with the first and second sensors and feedback component. The controller is configured to receive a first measurement of the first type of operating condition from the first sensor, a second measurement of the first type of operating condition from the second sensor, and a third measurement of the second type of operating condition from the feedback component, to analyze the first and second measurements to detect a change in operating peak firing pressure in the first cylinder and/or in the second cylinder, and to analyze the third measurement to diagnose a cause of the change.Type: ApplicationFiled: December 21, 2015Publication date: June 22, 2017Inventors: Chandan Kumar, Pavan Chakravarthy Nandigama, Amit Shrivastava, Jeffrey Jacob Bizub
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Publication number: 20170074157Abstract: A system includes a turbocharger, a wastegate, and one or more thermoelectric generators. The turbocharger includes a turbine and a compressor, and is configured to be coupled to an internal combustion engine. The wastegate is coupled to the turbine, and is disposed within a wastegate enclosure. The one or more thermoelectric generators generate energy from engine exhaust flowing through the wastegate. Each of the thermoelectric generators comprising includes a hot side coupled to the wastegate enclosure, a cold side coupled to a coolant supply, and one or more thermoelectric materials disposed between the hot side and the cold side.Type: ApplicationFiled: September 16, 2015Publication date: March 16, 2017Inventors: Shivraj Subhash Mitkari, Sujith Mohan, Pavan Chakravarthy Nandigama, Amit Shrivastava, Rajesh Katta, Kothamasu Venkata Krishna Chaitanya
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Publication number: 20170003190Abstract: A system includes a cylinder, a piston, a sensor configured to detect vibrations of the cylinder, piston, or both that correspond with varying pressures within the cylinder, and a controller coupled to the sensor. The controller is configured to receive a first signal from the sensor corresponding with first vibrations of the cylinder and to deduce from the first signal a first operating value of a parameter indicative of peak firing pressure at a first time, to compare the first operating value with a baseline value of the parameter indicative of peak firing pressure to detect a change in peak firing pressure, to receive a second signal from the sensor corresponding with second vibrations of the cylinder and to deduce from the second signal a second operating value of the parameter indicative of peak firing pressure at a second time, and to compare the second operating value with the baseline value to confirm the change in peak firing pressure.Type: ApplicationFiled: July 2, 2015Publication date: January 5, 2017Inventors: Pavan Chakravarthy Nandigama, Sujith Mohan, Amit Shrivastava, Chandan Kumar, Jeffrey Jacob Bizub
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Publication number: 20160333777Abstract: A system includes a cast mounting tower having an upper portion configured to support an engine, a generator, or any combination thereof and a plurality of ribs coupled to and supporting the upper portion of the mounting tower. The plurality of ribs extend from the upper portion in a direction crosswise to the upper portion, the upper portion and the plurality of ribs are integrally coupled as a one-piece structure of the cast mounting tower, and the cast mounting tower is configured to couple to a frame.Type: ApplicationFiled: May 12, 2015Publication date: November 17, 2016Inventors: Pavan Chakravarthy Nandigama, Peter Watson, Manikandan Suriyanarayanan
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Publication number: 20160258836Abstract: Condition based engine parts (e.g., movable engine parts) monitoring is disclosed. The techniques may enable detecting cracks present in engine parts while the engine is operational. In one embodiment, a system includes a wireless sensor configured to be disposed on a movable part internal to a machine and communicate wirelessly and a controller that includes a processor. The processor may be configured to initiate communication with the wireless sensor by receiving a wireless signal indicative of a frequency of vibration of the internal movable part from the wireless sensor, to obtain an acceptable threshold range of vibrations for the internal movable part from one or more data sources, to determine whether the frequency of vibration is within the acceptable threshold range of vibrations for the internal movable part, and to initiate preventative actions when the frequency is not within the acceptable threshold range.Type: ApplicationFiled: March 5, 2015Publication date: September 8, 2016Inventors: Venkatesh Raman, Pavan Chakravarthy Nandigama
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Publication number: 20150214458Abstract: A thermoelectric generator system for use between gases from a compressor stage of a turbocharger and a heat transfer fluid of an intercooler that treats the gases. In one version, the system may include a first terminal in thermal contact with gases from the compressor stage of the turbocharger to be treated by the intercooler; a second terminal in thermal contact with a heat transfer fluid for use in the intercooler; and a thermoelectric material between the first terminal and the second terminal, the thermoelectric generator converting a temperature difference between the gases and the heat transfer fluid to an electric current. A controller may be provided for controlling a current flow transmitted from the thermoelectric material to a load. A related intercooler system and engine system are also provided.Type: ApplicationFiled: January 27, 2014Publication date: July 30, 2015Applicant: General Electric CompanyInventors: Pavan Chakravarthy Nandigama, Amit Shrivastava