Patents by Inventor Sriram S
Sriram S 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).
-
Publication number: 20250110541Abstract: An example apparatus includes memory; machine-readable instructions; and at least one programmable circuit to at least one of execute or instantiate the machine-readable instructions to at least adjust a frequency of a clock signal of the memory based on workload demands of a processor circuit.Type: ApplicationFiled: December 12, 2024Publication date: April 3, 2025Applicant: Intel CorporationInventors: Angad Hiteshbhai Shah, Harithaa Varshini V, Uma Maheswari Trichy Sundaram, Subhojit Saha, Ashwin Sesha Srinivasan, Sriram S, Ravi Sri Himaja
-
Publication number: 20250092807Abstract: A system, method, and apparatus for decreasing harmful emissions is provided. The system includes an aftertreatment system configured to receive exhaust gas from an engine system; a heater coupled to the aftertreatment system and configured to provide heat; and a controller coupled to the heater. The controller is configured to: determine that the engine system is idling; in response to determining that the engine system is idling, determine whether a value regarding operation of the engine system is greater than a threshold value; in response to determining that the value is greater than the threshold value, determine whether a temperature regarding the aftertreatment system is greater than a threshold temperature; and in response to determining that the temperature of the aftertreatment system is greater than the threshold temperature, at least one of disable or partially disable the heater.Type: ApplicationFiled: November 26, 2024Publication date: March 20, 2025Applicant: Cummins Inc.Inventors: Xing Jin, Janardhan Kodavasal, Ved Merchant, Sriram S. Popuri
-
Publication number: 20250066209Abstract: The present invention discloses a process for preparation of high silica Y-zeolite by utilizing waste silica source. The steps include preparing a dilute nucleating agent, preparing a dense nucleating agent by mixing sodium silicate, sodium aluminate, deionized water and sodium hydroxide. Further, preparing an aluminosilicate gel by mixing the dilute nucleating agent with sodium silicate, aluminium sulphate, deionized water and dense nucleating agent, followed by crystallizing the aluminosilicate gel filtering and washing to obtain a Y-zeolite cake. The Y-zeolite is ammonia exchanged, dried and calcined to obtain high silica Y-zeolite.Type: ApplicationFiled: November 20, 2023Publication date: February 27, 2025Inventors: Hemant MISHRA, Sanju KUMARI, Pramod KUMAR, Sriram S
-
Publication number: 20250052181Abstract: A system includes an intake heater positioned in or proximate to an air intake of an engine, an aftertreatment system heater positioned downstream of the engine, and a controller coupled to the intake heater and the aftertreatment system heater. The controller is structured to operate the intake heater to heat air entering the engine for a predefined time period. The controller is structured to determine, based on information indicative of a temperature regarding an exhaust aftertreatment system, that the temperature regarding the exhaust aftertreatment system is below a predefined temperature threshold. The controller is structured to continue operating the intake heater after the predefined time period responsive to the temperature regarding the exhaust aftertreatment system being below the predefined temperature threshold.Type: ApplicationFiled: October 29, 2024Publication date: February 13, 2025Applicant: Cummins Inc.Inventors: Kristopher R. Bare, Xing Jin, Jennifer Kay Light-Holets, Sriram S. Popuri, Xiaobo Song
-
Patent number: 12173635Abstract: A system, method, and apparatus for decreasing harmful emissions is provided. The system includes an aftertreatment system comprising an exhaust conduit that directs exhaust gas from an engine system; a heater coupled to the aftertreatment system and configured to provide heat; and a controller coupled to the heater. The controller is configured to: determine whether the engine system is idling; in response to determining that the engine system is idling, determine whether a conversion efficiency of the engine system is greater than a threshold value; in response to determining that the conversion efficiency is greater than the threshold value, determine whether a temperature regarding the aftertreatment system is greater than a threshold temperature; and in response to determining that the temperature of the aftertreatment system is greater than the threshold temperature, at least one of disable or partially disable the heater.Type: GrantFiled: December 16, 2022Date of Patent: December 24, 2024Assignee: Cummins Inc.Inventors: Xing Jin, Janardhan Kodavasal, Ved Merchant, Sriram S. Popuri
-
Patent number: 12163453Abstract: A system includes a first heater positioned in or proximate to an exhaust aftertreatment system in exhaust gas-receiving communication with an engine, a second heater positioned downstream of the first heater, and a controller coupled to the first and second heaters. The controller is structured to: determine, based on information indicative of a temperature regarding the exhaust aftertreatment system, that the temperature regarding the exhaust aftertreatment system is below a predefined temperature threshold; determine that the second heater is in or likely in an error state; and control a temperature regarding the exhaust aftertreatment system using the first heater in response to determining that the second heater is in or likely in the error state, wherein the first heater controls the temperature regarding the exhaust aftertreatment system after a temperature regarding an engine intake air is at or above a predefined air intake temperature threshold.Type: GrantFiled: January 30, 2024Date of Patent: December 10, 2024Assignee: Cummins Inc.Inventors: Kristopher R. Bare, Xing Jin, Jennifer Kay Light-Holets, Sriram S. Popuri, Xiaobo Song
-
Publication number: 20240167408Abstract: A system includes a first heater positioned in or proximate to an exhaust aftertreatment system in exhaust gas-receiving communication with an engine, a second heater positioned downstream of the first heater, and a controller coupled to the first and second heaters. The controller is structured to: determine, based on information indicative of a temperature regarding the exhaust aftertreatment system, that the temperature regarding the exhaust aftertreatment system is below a predefined temperature threshold; determine that the second heater is in or likely in an error state; and control a temperature regarding the exhaust aftertreatment system using the first heater in response to determining that the second heater is in or likely in the error state, wherein the first heater controls the temperature regarding the exhaust aftertreatment system after a temperature regarding an engine intake air is at or above a predefined air intake temperature threshold.Type: ApplicationFiled: January 30, 2024Publication date: May 23, 2024Applicant: CUMMINS INC.Inventors: Kristopher R. Bare, Xing Jin, Jennifer Kay Light-Holets, Sriram S. Popuri, Xiaobo Song
-
Patent number: 11920506Abstract: A system includes a first heater positioned in or proximate to an exhaust aftertreatment system in exhaust gas-receiving communication with an engine, a second heater positioned downstream of the first heater, and a controller coupled to the first and second heaters. The controller is structured to activate the second heater in response to determining that a compound deposit is likely present.Type: GrantFiled: May 23, 2022Date of Patent: March 5, 2024Assignee: Cummins Inc.Inventors: Kristopher R. Bare, Xing Jin, Jennifer Kay Light-Holets, Sriram S. Popuri, Xiaobo Song
-
Patent number: 11814995Abstract: A recycling loop configuration of an exhaust gas aftertreatment system decreases a level of system-out NOx emissions of an engine. An apparatus including the configuration has an exhaust gas recycling system having a closed gas recycling loop system configured to heat gas circulating within the loop, and a blower for circulating gas within the loop. A method for operating the engine includes preheating at least one aftertreatment component of an exhaust gas aftertreatment system of the engine by exposing the component to heated gas circulating in a closed gas recycling loop.Type: GrantFiled: May 16, 2022Date of Patent: November 14, 2023Assignee: Cummins Inc.Inventors: Kunlun Liu, Xiaobo Song, Xing Jin, Kristopher R. Bare, Sriram S. Popuri, Scott Robert Bardakjy, Agneya Turlapati
-
Patent number: 11754007Abstract: A system and method of exhaust gas recirculation (EGR) in an internal combustion engine are provided. The EGR system includes a first EGR flow path and a second EGR flow path independent of the first EGR flow path that are each configured to recirculate high pressure exhaust from the exhaust system back to the engine intake system. The system includes a controller in operable communication with the EGR system configured to selectively control an amount of EGR flow through at least one of the first and second EGR flow paths.Type: GrantFiled: August 8, 2022Date of Patent: September 12, 2023Assignee: Cummins Inc.Inventors: Olumayokun Ogunbekun, Sriram S. Popuri, Scott Robert Bardakjy, Avra Brahma, Yongsoon Yoon
-
Patent number: 11713035Abstract: A powertrain system includes an engine coupled to a turbocharger and a timer, a motor generator coupled to the engine and a battery, and a controller. The controller is structured to receive data indicative of a state of charge from the battery, determine whether the state of charge is at or below a high predefined threshold, modulate control on the engine and the timer in response to determining the state of charge is above the high predefined threshold, determine whether the state of charge is above a low predefined threshold in response to the state of charge being at or below the high predefined threshold, and modulate control of the engine and the timer in response to determining the state of charge is at or below the low predefined threshold.Type: GrantFiled: September 1, 2020Date of Patent: August 1, 2023Assignee: Cummins Inc.Inventors: Sriram S. Popuri, Adrian P. Dale, Kristopher R. Bare, Xing Jin
-
Publication number: 20230193798Abstract: A system, method, and apparatus for decreasing harmful emissions is provided. The system includes an aftertreatment system comprising an exhaust conduit that directs exhaust gas from an engine system; a heater coupled to the aftertreatment system and configured to provide heat; and a controller coupled to the heater. The controller is configured to: determine whether the engine system is idling; in response to determining that the engine system is idling, determine whether a conversion efficiency of the engine system is greater than a threshold value; in response to determining that the conversion efficiency is greater than the threshold value, determine whether a temperature regarding the aftertreatment system is greater than a threshold temperature; and in response to determining that the temperature of the aftertreatment system is greater than the threshold temperature, at least one of disable or partially disable the heater.Type: ApplicationFiled: December 16, 2022Publication date: June 22, 2023Applicant: Cummins Inc.Inventors: Xing Jin, Janardhan Kodavasal, Ved Merchant, Sriram S. Popuri
-
Publication number: 20220403803Abstract: A system and method of exhaust gas recirculation (EGR) in an internal combustion engine are provided. The EGR system includes a first EGR flow path and a second EGR flow path independent of the first EGR flow path that are each configured to recirculate high pressure exhaust from the exhaust system back to the engine intake system. The system includes a controller in operable communication with the EGR system configured to selectively control an amount of EGR flow through at least one of the first and second EGR flow paths.Type: ApplicationFiled: August 8, 2022Publication date: December 22, 2022Inventors: Olumayokun Ogunbekun, Sriram S. Popuri, Scott Robert Bardakjy, Avra Brahma, Yongsoon Yoon
-
Publication number: 20220372926Abstract: A system and method of controlling operation of an internal combustion engine are provided. The method includes performing a cylinder deactivation operation while running the engine, selecting at least one of the plurality of temperature maintenance actions to increase an exhaust temperature, and performing at least one of the plurality of temperature maintenance actions effective to increase the exhaust temperature. The plurality of temperature maintenance actions may include one or more of a charge air cooler bypass operation, an EGR cooler bypass operation, an aftertreatment system heater operation, a turbocharger bypass operation, a turbocharger geometry adjustment operation, an intake air throttle adjustment operation, and a delayed injection timing operation, or combinations thereof.Type: ApplicationFiled: August 3, 2022Publication date: November 24, 2022Applicant: Cummins Inc.Inventors: Aaron William Beinborn, Lyle E. Kocher, J. Steven Kolhouse, Suk-Min Moon, Sriram S. Popuri, Janardhan Kodavasal, Ved Merchant, Kristopher R. Bare, Avra Brahma
-
Patent number: 11474945Abstract: Methods, systems, apparatuses, and computer program products are provided for prefetching data. A workload analyzer may identify job characteristics for a plurality of previously executed jobs in a workload executing on a cluster of one or more compute resources. For each job, identified job characteristics may include identification of an input dataset and an input bandwidth characteristic for the input dataset. A future workload predictor may identify future jobs expected to execute on the cluster based at least on the identified job characteristics. A cache assignment determiner may determine a cache assignment that identifies a prefetch dataset for at least one of the future jobs. A network bandwidth allocator may determine a network bandwidth assignment for the prefetch dataset. A plan instructor may instruct a compute resource of the cluster to load data to a cache local to the cluster according to the cache assignment and the network bandwidth assignment.Type: GrantFiled: June 2, 2021Date of Patent: October 18, 2022Assignee: MICROSOFT TECHNOLOGY LICENSING, LLCInventors: Virajith Jalaparti, Sriram S. Rao, Christopher W. Douglas, Ashvin Agrawal, Avrilia Floratou, Ishai Menache, Srikanth Kandula, Mainak Ghosh, Joseph Naor
-
Publication number: 20220290594Abstract: A recycling loop configuration of an exhaust gas aftertreatment system decreases a level of system-out NOx emissions of an engine. An apparatus including the configuration has an exhaust gas recycling system having a closed gas recycling loop system configured to heat gas circulating within the loop, and a blower for circulating gas within the loop. A method for operating the engine includes preheating at least one aftertreatment component of an exhaust gas aftertreatment system of the engine by exposing the component to heated gas circulating in a closed gas recycling loop.Type: ApplicationFiled: May 16, 2022Publication date: September 15, 2022Inventors: Kunlun Liu, Xiaobo Song, Xing Jin, Kristopher R. Bare, Sriram S. Popuri, Scott Robert Bardakjy, Agneya Turlapati
-
Publication number: 20220282654Abstract: A system includes a first heater positioned in or proximate to an exhaust aftertreatment system in exhaust gas-receiving communication with an engine, a second heater positioned downstream of the first heater, and a controller coupled to the first and second heaters. The controller is structured to activate the second heater in response to determining that a compound deposit is likely present.Type: ApplicationFiled: May 23, 2022Publication date: September 8, 2022Applicant: Cummins Inc.Inventors: Kristopher R. Bare, Xing Jin, Jennifer Kay Light-Holets, Sriram S. Popuri, Xiaobo Song
-
Patent number: 11339698Abstract: A system includes a first heater positioned in or proximate to an exhaust aftertreatment system in exhaust gas-receiving communication with an engine, a second heater positioned downstream of the first heater, and a controller coupled to the first and second heaters. The controller is structured to determine, based on information indicative of a temperature regarding the exhaust aftertreatment system, that the temperature is below a temperature threshold; receive information regarding a characteristic of a battery coupled to the first heater and the second heater; control the temperature regarding the exhaust aftertreatment system without using the first or second heaters in response to determining that the characteristic of the battery is below a first threshold; and control a temperature regarding the exhaust aftertreatment system using the first heater in response to determining that the characteristic of the battery is above the first threshold but below a second threshold.Type: GrantFiled: May 27, 2020Date of Patent: May 24, 2022Assignee: Cummins Inc.Inventors: Kristopher R. Bare, Xing Jin, Jennifer Kay Light-Holets, Sriram S. Popuri, Xiaobo Song
-
Publication number: 20220063584Abstract: A powertrain system includes an engine coupled to a turbocharger and a timer, a motor generator coupled to the engine and a battery, and a controller. The controller is structured to receive data indicative of a state of charge from the battery, determine whether the state of charge is at or below a high predefined threshold, modulate control on the engine and the timer in response to determining the state of charge is above the high predefined threshold, determine whether the state of charge is above a low predefined threshold in response to the state of charge being at or below the high predefined threshold, and modulate control of the engine and the timer in response to determining the state of charge is at or below the low predefined threshold.Type: ApplicationFiled: September 1, 2020Publication date: March 3, 2022Applicant: CUMMINS INC.Inventors: Sriram S. Popuri, Adrian P. Dale, Kristopher R. Bare, Xing Jin
-
Publication number: 20210372310Abstract: A system includes a first heater positioned in or proximate to an exhaust aftertreatment system in exhaust gas-receiving communication with an engine, a second heater positioned downstream of the first heater, and a controller coupled to the first and second heaters. The controller is structured to determine, based on information indicative of a temperature regarding the exhaust aftertreatment system, that the temperature is below a temperature threshold; receive information regarding a characteristic of a battery coupled to the first heater and the second heater; control the temperature regarding the exhaust aftertreatment system without using the first or second heaters in response to determining that the characteristic of the battery is below a first threshold; and control a temperature regarding the exhaust aftertreatment system using the first heater in response to determining that the characteristic of the battery is above the first threshold but below a second threshold.Type: ApplicationFiled: May 27, 2020Publication date: December 2, 2021Inventors: Kristopher R. Bare, Xing Jin, Jennifer Kay Light-Holets, Sriram S. Popuri, Xiaobo Song