Patents by Inventor Gayatri Adi
Gayatri Adi 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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Publication number: 20240132071Abstract: An electronic control system is configured to control a vehicle operating in a convoy by determining a vehicle motion reference parameter (VMRP) in response to a convoying control input (CCI), determining a braking capability of the vehicle including at least a regenerative braking capability, determining a minimum following distance between the vehicle and a forward vehicle of the convoy based at least in part upon the braking capability, and arbitrating among a plurality of control options including preforming a first modification of the VMRP determined to provide operation of the vehicle satisfying the minimum following distance and controlling motion of the vehicle using the first modification of the VMRP, performing a second modification of the VMRP determined to provide improved operating efficiency of the vehicle controlling motion of the vehicle using the second modification of the VMRP, and performing no modification of the VMRP and controlling motion of the vehicle using the VMRP without modificatioType: ApplicationFiled: October 24, 2022Publication date: April 25, 2024Inventors: Karla Fuhs, Hoseinali Borhan, Gayatri Adi, Bibin N. Pattel
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Patent number: 11891938Abstract: Systems and methods for controlling a performance variable of an engine system are provided. An apparatus includes a response model circuit structured to apply a constraint to a response model that represents a relationship regarding a manipulated variable or a relationship between the performance variable and the manipulated variable. The apparatus further includes an optimization circuit structured to determine a target for the manipulated variable via the response model such that the target of the manipulated variable satisfies the constraint of the response model. The performance variable is indicative of performance of operation of the engine system and the manipulated variable is capable of affecting the performance variable. Operation of the engine system is adjusted based upon the target of the manipulated variable by controlling at least one of a fuel system or an air handling system of the engine system.Type: GrantFiled: July 11, 2022Date of Patent: February 6, 2024Assignee: Cummins Inc.Inventors: Gayatri Adi, Kartavya Neema, Paul V. Moonjelly, Karla Carale Stricker Fuhs, Chinmay Rao
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Publication number: 20220364492Abstract: Systems and methods for controlling a performance variable of an engine system are provided. An apparatus includes a response model circuit structured to apply a constraint to a response model that represents a relationship regarding a manipulated variable or a relationship between the performance variable and the manipulated variable. The apparatus further includes an optimization circuit structured to determine a target for the manipulated variable via the response model such that the target of the manipulated variable satisfies the constraint of the response model. The performance variable is indicative of performance of operation of the engine system and the manipulated variable is capable of affecting the performance variable. Operation of the engine system is adjusted based upon the target of the manipulated variable by controlling at least one of a fuel system or an air handling system of the engine system.Type: ApplicationFiled: July 11, 2022Publication date: November 17, 2022Applicant: Cummins Inc.Inventors: Gayatri Adi, Kartavya Neema, Paul V. Moonjelly, Karla Carale Stricker Fuhs, Chinmay Rao
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Patent number: 11401854Abstract: Systems and methods for optimizing a performance variable for an engine system. The method includes applying constraints of manipulated variables as well as performance variables, mechanical constraints and other engine responses to response models. The response models each represent a piecewise linear relationship between the manipulated variables and other engine responses including performance variables and constraints. The method also comprises determining an optimal target for each of the manipulated variables by using a quasi-simplex optimization process on the response models. The optimal targets of the manipulated variables correspond to an optimal value of the performance variable.Type: GrantFiled: March 2, 2018Date of Patent: August 2, 2022Assignee: Cummins Inc.Inventors: Gayatri Adi, Kartavya Neema, Paul V. Moonjelly, Karla Carale Stricker Fuhs, Chinmay Rao
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Patent number: 11053881Abstract: A system for control of an internal combustion system having subsystems, each with different response times. Subsystems may include a fuel system, an air handling system, and an aftertreatment system, each being operated in response to a set of reference values generated by a respective target determiner. Calibration of each subsystem may be performed independently. The fuel system is controlled at a first time constant. The air handling system is controlled on the order of a second time constant slower than the first time constant. The aftertreatment system is controlled on the order of a third time constant slower than the second time constant. A subsystem manager is optionally in operative communication with each target determiner to coordinate control. Generally, dynamic parameters from slower subsystems are treated as static parameters when determining reference values for controlling a faster subsystem.Type: GrantFiled: October 14, 2015Date of Patent: July 6, 2021Assignee: Cummins Inc.Inventors: Phanindra V. Garimella, Paul V. Moonjelly, Edmund P. Hodzen, Ming-feng Hsieh, Gayatri Adi, Gokul Vishwanathan
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Patent number: 11035310Abstract: Methods and apparatuses for calibration and control of various engine subsystems using a target value approach. Under the target value approach, the control of each engine subsystem is separated or decoupled to include a set of target values, or a reference value set. A subsystem has a corresponding target determiner, which provides a target value set, or reference value set, in response to a basis variable set and optionally an overall subsystem target. The basis variable set includes parameters selected to robustly characterize the variables that affect the operation of the particular subsystem. The target determiner is optionally calibrated to provide a reference value set within specifications of the subsystem. A physical subsystem controller operates in response to the reference value set.Type: GrantFiled: October 14, 2015Date of Patent: June 15, 2021Assignee: Cummins Inc.Inventors: Phanindra V. Garimella, Paul V. Moonjelly, Edmund P. Hodzen, Ming-feng Hsieh, Gayatri Adi, Gokul Vishwanathan
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Patent number: 11002203Abstract: Methods and apparatuses for calibration and control of various engine subsystems using a target value approach. Under the target value approach, the control of each engine subsystem is separated or decoupled to include a set of target values, or a reference value set. A subsystem has a corresponding target determiner, which provides a target value set, or reference value set, in response to a basis variable set and optionally an overall subsystem target. The basis variable set includes parameters selected to robustly characterize the variables that affect the operation of the particular subsystem. The target determiner is optionally calibrated to provide a reference value set within specifications of the subsystem. A physical subsystem controller operates in response to the reference value set.Type: GrantFiled: October 14, 2015Date of Patent: May 11, 2021Assignee: Cummins Inc.Inventors: Phanindra V. Garimella, Paul V. Moonjelly, Edmund P. Hodzen, Ming-feng Hsieh, Gayatri Adi, Gokul Vishwanathan
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Patent number: 10947914Abstract: Methods and apparatuses for calibration and control of various engine subsystems using a target value approach. Under the target value approach, the control of each engine subsystem is separated or decoupled to include a set of target values, or a reference value set. A subsystem has a corresponding target determiner, which provides a target value set, or reference value set, in response to a basis variable set and optionally an overall subsystem target. The basis variable set includes parameters selected to robustly characterize the variables that affect the operation of the particular subsystem. The target determiner is optionally calibrated to provide a reference value set within specifications of the subsystem. A physical subsystem controller operates in response to the reference value set.Type: GrantFiled: October 14, 2015Date of Patent: March 16, 2021Assignee: Cummins Inc.Inventors: Phanindra V. Garimella, Paul V. Moonjelly, Edmund P. Hodzen, Ming-feng Hsieh, Gayatri Adi, Gokul Vishwanathan
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Patent number: 10808635Abstract: Unique engine controls and apparatuses, methods and systems relating to the same are disclosed. One embodiment is method which utilizes an in-cylinder [O2] mass fraction model to generate exhaust gas recirculation (EGR) fraction references for both transient and steady state operating conditions. Further embodiments, forms, objects, features, advantages, aspects, and benefits shall become apparent from the following description and drawings.Type: GrantFiled: September 30, 2019Date of Patent: October 20, 2020Assignee: Cummins Inc.Inventors: Quresh Sutarwala, Gayatri Adi, Paul V. Moonjelly
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Patent number: 10774778Abstract: A system for control of an internal combustion system having subsystems, each with different response times. Subsystems may include a fuel system, an air handling system, and an aftertreatment system, each being operated in response to a set of reference values generated by a respective target determiner. Calibration of each subsystem may be performed independently. The fuel system is controlled at a first time constant. The air handling system is controlled on the order of a second time constant slower than the first time constant. The aftertreatment system is controlled on the order of a third time constant slower than the second time constant. A subsystem manager is optionally in operative communication with each target determiner to coordinate control. Generally, dynamic parameters from slower subsystems are treated as static parameters when determining reference values for controlling a faster subsystem.Type: GrantFiled: October 14, 2015Date of Patent: September 15, 2020Assignee: Cummins Inc.Inventors: Phanindra V. Garimella, Paul V. Moonjelly, Edmund P. Hodzen, Ming-feng Hsieh, Gayatri Adi, Gokul Vishwanathan
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Publication number: 20200040795Abstract: Systems and methods for optimizing a performance variable for an engine system. The method includes applying constraints of manipulated variables as well as performance variables, mechanical constraints and other engine responses to response models. The response models each represent a piecewise linear relationship between the manipulated variables and other engine responses including performance variables and constraints. The method also comprises determining an optimal target for each of the manipulated variables by using a quasi-simplex optimization process on the response models. The optimal targets of the manipulated variables correspond to an optimal value of the performance variable.Type: ApplicationFiled: March 2, 2018Publication date: February 6, 2020Applicant: Cummins Inc.Inventors: Gayatri Adi, Kartavya Neema, Paul V. Moonjelly, Karla Carale Stricker Fuhs, Chinmay Rao
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Publication number: 20200025121Abstract: Unique engine controls and apparatuses, methods and systems relating to the same are disclosed. One embodiment is method which utilizes an in-cylinder [O2] mass fraction model to generate exhaust gas recirculation (EGR) fraction references for both transient and steady state operating conditions. Further embodiments, forms, objects, features, advantages, aspects, and benefits shall become apparent from the following description and drawings.Type: ApplicationFiled: September 30, 2019Publication date: January 23, 2020Inventors: Quresh Sutarwala, Gayatri Adi, Paul V. Moonjelly
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Publication number: 20180274475Abstract: A system for control of an internal combustion system having subsystems, each with different response times. Subsystems may include a fuel system, an air handling system, and an aftertreatment system, each being operated in response to a set of reference values generated by a respective target determiner. Calibration of each subsystem may be performed independently. The fuel system is controlled at a first time constant. The air handling system is controlled on the order of a second time constant slower than the first time constant. The aftertreatment system is controlled on the order of a third time constant slower than the second time constant. A subsystem manager is optionally in operative communication with each target determiner to coordinate control. Generally, dynamic parameters from slower subsystems are treated as static parameters when determining reference values for controlling a faster subsystem.Type: ApplicationFiled: October 14, 2015Publication date: September 27, 2018Applicant: CUMMINS INC.Inventors: Phanindra V. Garimella, Paul V. Moonjelly, Edmund P. Hodzen, Ming-feng Hsieh, Gayatri Adi, Gokul Vishwanathan
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Publication number: 20180274467Abstract: Methods and apparatuses for calibration and control of various engine subsystems using a target value approach. Under the target value approach, the control of each engine subsystem is separated or decoupled to include a set of target values, or a reference value set. A subsystem has a corresponding target determiner, which provides a target value set, or reference value set, in response to a basis variable set and optionally an overall subsystem target. The basis variable set includes parameters selected to robustly characterize the variables that affect the operation of the particular subsystem. The target determiner is optionally calibrated to provide a reference value set within specifications of the subsystem. A physical subsystem controller operates in response to the reference value set.Type: ApplicationFiled: October 14, 2015Publication date: September 27, 2018Applicant: CUMMINS INC.Inventors: Phanindra V. Garimella, Paul V. Moonjelly, Edmund P. Hodzen, Ming-feng Hsieh, Gayatri Adi, Gokul Vishwanathan
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Publication number: 20180266348Abstract: Methods and apparatuses for calibration and control of various engine subsystems using a target value approach. Under the target value approach, the control of each engine subsystem is separated or decoupled to include a set of target values, or a reference value set. A subsystem has a corresponding target determiner, which provides a target value set, or reference value set, in response to a basis variable set and optionally an overall subsystem target. The basis variable set includes parameters selected to robustly characterize the variables that affect the operation of the particular subsystem. The target determiner is optionally calibrated to provide a reference value set within specifications of the subsystem. A physical subsystem controller operates in response to the reference value set.Type: ApplicationFiled: October 14, 2015Publication date: September 20, 2018Applicant: CUMMINS INC.Inventors: Phanindra V. Garimella, Paul V. Moonjelly, Edmund P. Hodzen, Ming-feng Hsieh, Gayatri Adi, Gokul Vishwanathan
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Publication number: 20180266343Abstract: Methods and apparatuses for calibration and control of various engine subsystems using a target value approach. Under the target value approach, the control of each engine subsystem is separated or decoupled to include a set of target values, or a reference value set. A subsystem has a corresponding target determiner, which provides a target value set, or reference value set, in response to a basis variable set and optionally an overall subsystem target. The basis variable set includes parameters selected to robustly characterize the variables that affect the operation of the particular subsystem. The target determiner is optionally calibrated to provide a reference value set within specifications of the subsystem. A physical subsystem controller operates in response to the reference value set.Type: ApplicationFiled: October 14, 2015Publication date: September 20, 2018Applicant: CUMMINS INC.Inventors: Phanindra V. Garimella, Paul V. Moonjelly, Edmund P. Hodzen, Ming-feng Hsieh, Gayatri Adi, Gokul Vishwanathan
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Publication number: 20180266340Abstract: A system for control of an internal combustion system having subsystems, each with different response times. Subsystems may include a fuel system, an air handling system, and an aftertreatment system, each being operated in response to a set of reference values generated by a respective target determiner. Calibration of each subsystem may be performed independently. The fuel system is controlled at a first time constant. The air handling system is controlled on the order of a second time constant slower than the first time constant. The aftertreatment system is controlled on the order of a third time constant slower than the second time constant. A subsystem manager is optionally in operative communication with each target determiner to coordinate control. Generally, dynamic parameters from slower subsystems are treated as static parameters when determining reference values for controlling a faster subsystem.Type: ApplicationFiled: October 14, 2015Publication date: September 20, 2018Applicant: CUMMINS INC.Inventors: Phanindra V. Garimella, Paul V. Moonjelly, Edmund P. Hodzen, Ming-feng Hsieh, Gayatri Adi, Gokul Vishwanathan
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Publication number: 20130024094Abstract: A closed-loop control algorithm that reduces the increases in nitrogen oxides (NOx) commonly observed with biodiesel combustion while retaining particulate matter (PM) reductions with variable biodiesel blend fractions. One embodiment includes a control algorithm that is closed-loop with regards to combustible oxygen mass fraction (COMF) instead of exhaust gas recirculation (EGR) fraction. Yet another algorithm includes biodiesel blend estimation and “fuel-flexible” accommodation. A physics-based model has also been developed which predicts experimentally observed engine performance and emissions for biodiesel.Type: ApplicationFiled: December 31, 2010Publication date: January 24, 2013Inventors: Gregory Matthew Shaver, David Benjamin Snyder, Carrie Michele Hall, Gayatri Adi, Michael Bunce