Patents by Inventor Shivangi Wagle
Shivangi Wagle 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: 11480119Abstract: A system, apparatus, and method for controlling an engine system can provide fuel reactivity compensation control for an engine of the engine system. Pilot fuel quantity supplied to the engine can be controlled using a nitrous oxide (NOx) error. Likewise, air-to-fuel ratio (AFR) for the engine can be controlled using the NOx error. Each of a pilot fuel offset and an AFR control trim can be generated using the NOx error. The pilot fuel offset and the AFR control trim can be used to control the pilot fuel quantity and the AFR, respectively.Type: GrantFiled: December 15, 2020Date of Patent: October 25, 2022Assignee: Caterpillar Inc.Inventors: Geetika Dilawari, Shawn M. Damm, Shivangi Wagle, Hannes Marscheider
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Patent number: 11454179Abstract: An engine brake controller may obtain a performance characteristic of an engine. The engine brake controller may determine, based on the performance characteristic of the engine, that engine braking is enabled to control the engine. The engine brake controller may monitor a set of operating parameters of the engine. The engine brake controller may determine that operating values of the set of operating parameters satisfy corresponding thresholds of the set of operating parameters. The engine brake controller may determine, based on the operating values satisfying the corresponding thresholds, an engine braking configuration associated with activating engine braking of a set of cylinders of the engine. The set of cylinders may be a proper subset of a total quantity of cylinders of the engine. The engine brake controller may cause the engine braking to be applied to the set of cylinders to increase a temperature of exhaust gas from the engine.Type: GrantFiled: August 11, 2020Date of Patent: September 27, 2022Assignee: Caterpillar Inc.Inventors: Eric Lee Schroeder, David Andrew Pierpont, Zach Engstrom, Shivangi Wagle
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Publication number: 20220186674Abstract: A system, apparatus, and method for controlling an engine system can provide fuel reactivity compensation control for an engine of the engine system. Pilot fuel quantity supplied to the engine can be controlled using a nitrous oxide (NOx) error. Likewise, air-to-fuel ratio (AFR) for the engine can be controlled using the NOx error. Each of a pilot fuel offset and an AFR control trim can be generated using the NOx error. The pilot fuel offset and the AFR control trim can be used to control the pilot fuel quantity and the AFR, respectively.Type: ApplicationFiled: December 15, 2020Publication date: June 16, 2022Applicant: Caterpillar Inc.Inventors: Geetika DILAWARI, Shawn M. DAMM, Shivangi WAGLE, Hannes MARSCHEIDER
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Patent number: 11306669Abstract: A system, apparatus, and method for controlling an engine system can provide fuel reactivity compensation control for an engine of the engine system. The control can include controlling pilot fuel quantity supplied to an engine based on a pilot fuel offset value; and controlling air-to-fuel ratio (AFR) for the engine based on an AFR control trim value. A NOx error value can be used to generate one of the pilot fuel offset value or the AFR control trim value, and an exhaust temperature error value can be used to generate the other of the pilot fuel offset value or the AFR control trim value.Type: GrantFiled: December 15, 2020Date of Patent: April 19, 2022Assignee: Caterpillar Inc.Inventors: Christopher F. Gallmeyer, Geetika Dilawari, Shawn M. Damm, Shivangi Wagle, Hannes Marscheider
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Patent number: 11286845Abstract: A method for controlling and engine system with a plurality of turbochargers. At least one of the plurality of turbochargers has a turbine valve, a compressor valve, and actuators operable to change the position of the turbine valve. The method comprises controlling the actuator based on the presence of a transient event or a steady state event. During a transient event an engine control module can control the actuators to change the turbine valve to opened and closed positions and the turbine valve to a closed position based on the comparison between a corrected mass flow per turbocharger to a mass flow threshold.Type: GrantFiled: July 8, 2019Date of Patent: March 29, 2022Assignee: Caterpillar Inc.Inventors: Shivangi Wagle, Liangtao Zhu, Kevin Sergott, Eric Schroeder, Arvind Sivasubramanian, Travis Barnes
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Publication number: 20220049661Abstract: An engine brake controller may obtain a performance characteristic of an engine. The engine brake controller may determine, based on the performance characteristic of the engine, that engine braking is enabled to control the engine. The engine brake controller may monitor a set of operating parameters of the engine. The engine brake controller may determine that operating values of the set of operating parameters satisfy corresponding thresholds of the set of operating parameters. The engine brake controller may determine, based on the operating values satisfying the corresponding thresholds, an engine braking configuration associated with activating engine braking of a set of cylinders of the engine. The set of cylinders may be a proper subset of a total quantity of cylinders of the engine. The engine brake controller may cause the engine braking to be applied to the set of cylinders to increase a temperature of exhaust gas from the engine.Type: ApplicationFiled: August 11, 2020Publication date: February 17, 2022Applicant: Caterpillar Inc.Inventors: Eric Lee SCHROEDER, David Andrew PIERPONT, Zach ENGSTROM, Shivangi WAGLE
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Patent number: 11149667Abstract: An internal combustion engine includes an inline turbocharger and at least a first inline turbocharger that has a first turbine air valve, and a first inline compressor that has a first compressor air valve. A control valve is responsive to commands from an electronic controller to move the air valves between open and closed positions. The electronic controller monitors operating parameters of the engine to diagnose a fault. determine whether an air valve is stuck open or closed, and adjust a priority schedule for activating or deactivating the first inline turbocharger based on the type of fault.Type: GrantFiled: September 10, 2020Date of Patent: October 19, 2021Assignee: Caterpillar Inc.Inventors: Julia H. Jenks, Karthik Jayasankaran, Shivangi Wagle, Kevin Sergott, Kosha B. Patel
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Patent number: 11035317Abstract: A control system for controlling pilot fuel injection in a dual fuel engine is disclosed. The control system may determine, using measurements from one or more sensors, one or more combustion parameters associated with the dual fuel engine during operation of the dual fuel engine. The control system may determine an estimated nitrogen oxides (NOx) emissions level based on the one or more combustion parameters, and may determine a NOx error based on a comparison between the estimated NOx emissions level and a desired NOx emissions level. The control system may control a quantity of pilot fuel injected into the dual fuel engine based on the NOx error.Type: GrantFiled: June 6, 2019Date of Patent: June 15, 2021Assignee: Caterpillar Inc.Inventors: Scott Fiveland, Arvind Sivasubramanian, Shivangi Wagle, Shawn Damm, Christopher Gallmeyer, Andy Pierpont
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Publication number: 20210010411Abstract: A method for controlling and engine system with a plurality of turbochargers. At least one of the plurality of turbochargers has a turbine valve, a compressor valve, and actuators operable to change the position of the turbine valve. The method comprises controlling the actuator based on the presence of a transient event or a steady state event. During a transient event an engine control module can control the actuators to change the turbine valve to opened and closed positions and the turbine valve to a closed position based on the comparison between a corrected mass flow per turbocharger to a mass flow threshold.Type: ApplicationFiled: July 8, 2019Publication date: January 14, 2021Applicant: Caterpillar Inc.Inventors: Shivangi Wagle, Liangtao Zhu, Kevin Sergott, Eric Schroeder, Arvind Sivasubramanian, Travis Barnes
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Publication number: 20200386175Abstract: A control system for controlling pilot fuel injection in a dual fuel engine is disclosed. The control system may determine, using measurements from one or more sensors, one or more combustion parameters associated with the dual fuel engine during operation of the dual fuel engine. The control system may determine an estimated nitrogen oxides (NOx) emissions level based on the one or more combustion parameters, and may determine a NOx error based on a comparison between the estimated NOx emissions level and a desired NOx emissions level. The control system may control a quantity of pilot fuel injected into the dual fuel engine based on the NOx error.Type: ApplicationFiled: June 6, 2019Publication date: December 10, 2020Applicant: Caterpillar Inc.Inventors: Scott FIVELAND, Arvind SIVASUBRAMANIAN, Shivangi WAGLE, Shawn DAMM, Christopher GALLMEYER, Andy PIERPONT
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Publication number: 20150300281Abstract: Controlling intake pressure in a gaseous fuel internal combustion engine includes calculating a control term in an intake pressure control loop based on a pressure error, and adjusting a throttle valve and a second valve responsive to the control term in first and second control loop cycles. The second valve is within a return conduit returning compressed gases from a location downstream a compressor to a location upstream. A pressure of gaseous fuel and air within the intake conduit is changed via the adjustments so as to reduce the pressure error.Type: ApplicationFiled: April 21, 2014Publication date: October 22, 2015Applicant: Caterpillar Inc.Inventors: Arvind Sivasubramanian, Shivangi Wagle, Christopher Gallmeyer