Patents by Inventor Paspuleti Ashish Kumar NAIDU
Paspuleti Ashish Kumar NAIDU 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: 10604143Abstract: An internal combustion engine assembly for a motor vehicle is provided. The engine assembly comprising: an engine; an electric motor; and a balance shaft comprising an eccentric mass, wherein the electric motor is configured to selectively rotate the balance shaft in order to balance a vibration characteristic of the engine. A method of operating the engine assembly is also provided.Type: GrantFiled: November 7, 2017Date of Patent: March 31, 2020Assignee: Ford Global Technologies, LLCInventors: Paspuleti Ashish Kumar Naidu, Peter George Brittle, Brian G. Rutter
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Patent number: 10576840Abstract: A hybrid vehicle battery system that comprises a plurality of cells that are electrically coupled to an electric motor of the vehicle is provided, the electric motor being mechanically coupled to a drive system of the vehicle. The battery system is configured to: determine a voltage requirement of the battery system at least partially based on a current operating mode or an anticipated operating mode; and adjust the configuration of the cells in order to increase or decrease the voltage of the battery system according to the requirement. A method of operating a hybrid vehicle is also provided.Type: GrantFiled: July 20, 2017Date of Patent: March 3, 2020Assignee: Ford Global Technologies, LLCInventors: Paspuleti Ashish Kumar Naidu, Allan Alimario, Peter George Brittle, Benjamin A. Tabatowski-Bush
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Patent number: 10247115Abstract: A system and method for increasing engine heating rate to facilitate early introduction of exhaust gas recirculation after a cold start include operating an electric machine connect to the engine to apply a load to the engine. The electric machine may be operated as a generator to produce an increased engine torque demand and increase the rate of engine heating until an engine temperature and an exhaust temperature exceed corresponding thresholds. Operation of the electric machine as a generator may be stopped in response to a battery state of charge exceeding a threshold, or engine load exceeding a threshold.Type: GrantFiled: August 10, 2016Date of Patent: April 2, 2019Assignee: FORD GLOBAL TECHNOLOGIES, LLCInventors: Paspuleti Ashish Kumar Naidu, Ian Halleron, Peter George Brittle, James Wright
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Patent number: 10113469Abstract: A method for preventing overheating of a diesel particulate filter during regeneration when an engine is idling may include using an electric machine to apply a load to the engine and compensating for the increase in applied load by increasing an engine torque set point to reduce the concentration of Oxygen in the exhaust gas flowing to the diesel particulate filter. Increased engine torque may be provided by adjusting air-fuel ratio by enriching an air-fuel mixture supplied to the engine and the diesel particulate filter. The control may be initiated in response to entering an idle mode during regeneration or in response to a measured or estimated temperature of the diesel particular filter exceeding a threshold or limit. Estimated temperature may be predicted using a soot combustion model.Type: GrantFiled: August 10, 2016Date of Patent: October 30, 2018Assignee: Ford Global Technologies, LLCInventors: Paspuleti Ashish Kumar Naidu, James Wright, Peter George Brittle, Matthew Mitchell
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Patent number: 10047652Abstract: A method of removing sulfur from a lean NOx trap of a mild hybrid vehicle while the vehicle is stationary is disclosed, the method comprising connecting an electrical system of the vehicle to a large capacity external battery, operating an integrated starter generator driven by an engine of the vehicle as a generator to load the engine thereby allowing the engine to be operated at a higher torque level and rich of stoichiometric and storing the electrical energy produced by the integrated starter generator in the large capacity battery during the time period required for the removal of sulfur from the lean NOx trap.Type: GrantFiled: July 21, 2016Date of Patent: August 14, 2018Assignee: FORD GLOBAL TECHNOLOGIES, LLCInventors: Paspuleti Ashish Kumar Naidu, James Wright, Peter George Brittle
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Publication number: 20180141536Abstract: An internal combustion engine assembly for a motor vehicle is provided. The engine assembly comprising: an engine; an electric motor; and a balance shaft comprising an eccentric mass, wherein the electric motor is configured to selectively rotate the balance shaft in order to balance a vibration characteristic of the engine. A method of operating the engine assembly is also provided.Type: ApplicationFiled: November 7, 2017Publication date: May 24, 2018Inventors: Paspuleti Ashish Kumar Naidu, Peter George Brittle, Brian G. Rutter
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Publication number: 20180029588Abstract: A hybrid vehicle battery system that comprises a plurality of cells that are electrically coupled to an electric motor of the vehicle is provided, the electric motor being mechanically coupled to a drive system of the vehicle. The battery system is configured to: determine a voltage requirement of the battery system at least partially based on a current operating mode or an anticipated operating mode; and adjust the configuration of the cells in order to increase or decrease the voltage of the battery system according to the requirement. A method of operating a hybrid vehicle is also provided.Type: ApplicationFiled: July 20, 2017Publication date: February 1, 2018Inventors: Paspuleti Ashish Kumar Naidu, Allan Alimario, Peter George Brittle, Benjamin A. Tabatowski-Bush
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Publication number: 20170051707Abstract: A system and method for reducing rate of increase of NOx feedgas emissions during an acceleration event in a vehicle having an engine with exhaust gas recirculation (EGR) and an electric machine, such as an integrated starter-generator (ISG) coupled to the engine include operating the electric machine to provide an assist torque and reducing engine torque accordingly in response to predicted NOx feedgas emissions exceeding a threshold. The NOx feedgas emissions may be predicted based on an exhaust gas sensor signal or a NOx model based on engine speed, engine torque, and intake EGR ratio. The engine torque may be reduced by reducing an engine torque set point. The electric machine torque may be reduced when a driver demand torque matches the reduced engine torque set point. The electric machine may be used to charge a battery in response to the driver demand torque matching the engine torque set point.Type: ApplicationFiled: August 19, 2016Publication date: February 23, 2017Applicant: FORD GLOBAL TECHNOLOGIES, LLCInventors: James WRIGHT, Paspuleti Ashish Kumar NAIDU, Peter George BRITTLE, Matthew MITCHELL
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Publication number: 20170044960Abstract: A method for preventing overheating of a diesel particulate filter during regeneration when an engine is idling may include using an electric machine to apply a load to the engine and compensating for the increase in applied load by increasing an engine torque set point to reduce the concentration of Oxygen in the exhaust gas flowing to the diesel particulate filter. Increased engine torque may be provided by adjusting air-fuel ratio by enriching an air-fuel mixture supplied to the engine and the diesel particulate filter. The control may be initiated in response to entering an idle mode during regeneration or in response to a measured or estimated temperature of the diesel particular filter exceeding a threshold or limit. Estimated temperature may be predicted using a soot combustion model.Type: ApplicationFiled: August 10, 2016Publication date: February 16, 2017Applicant: FORD GLOBAL TECHNOLOGIES, LLCInventors: Paspuleti Ashish Kumar NAIDU, James WRIGHT, Peter George BRITTLE, Matthew MITCHELL
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Publication number: 20170045004Abstract: A system and method for increasing engine heating rate to facilitate early introduction of exhaust gas recirculation after a cold start include operating an electric machine connect to the engine to apply a load to the engine. The electric machine may be operated as a generator to produce an increased engine torque demand and increase the rate of engine heating until an engine temperature and an exhaust temperature exceed corresponding thresholds. Operation of the electric machine as a generator may be stopped in response to a battery state of charge exceeding a threshold, or engine load exceeding a threshold.Type: ApplicationFiled: August 10, 2016Publication date: February 16, 2017Applicant: FORD GLOBAL TECHNOLOGIES, LLCInventors: Paspuleti Ashish Kumar NAIDU, Ian HALLERON, Peter George BRITTLE, James WRIGHT
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Publication number: 20170022863Abstract: A method of removing sulfur from a lean NOx trap of a mild hybrid vehicle while the vehicle is stationary is disclosed, the method comprising connecting an electrical system of the vehicle to a large capacity external battery, operating an integrated starter generator driven by an engine of the vehicle as a generator to load the engine thereby allowing the engine to be operated at a higher torque level and rich of stoichiometric and storing the electrical energy produced by the integrated starter generator in the large capacity battery during the time period required for the removal of sulfur from the lean NOx trap.Type: ApplicationFiled: July 21, 2016Publication date: January 26, 2017Inventors: Paspuleti Ashish Kumar NAIDU, James WRIGHT, Peter George BRITTLE