Patents by Inventor FARSHAD FARID
FARSHAD FARID 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: 11448113Abstract: A vehicle system (100) includes a conversion catalyst (116), a temperature sensor (156), an indication device (142), and an exhaust gas aftertreatment system controller (132). The conversion catalyst (116) is configured to receive exhaust gas. The temperature sensor (156) is configured to sense a conversion catalyst temperature of the conversion catalyst (116). The indication device (142) is operable between a static state and an impure fuel alarm state. The exhaust gas aftertreatment system controller (132) is configured to receive the conversion catalyst temperature from the temperature sensor (156). The exhaust gas aftertreatment system controller (132) is also configured to compare the conversion catalyst temperature to a conversion catalyst temperature lower threshold. The exhaust gas aftertreatment system controller (132) is also configured to compare the conversion catalyst temperature to a conversion catalyst temperature upper threshold.Type: GrantFiled: June 10, 2019Date of Patent: September 20, 2022Assignee: Cummins Emission Solutions Inc.Inventors: Gautam Sharma, Deepak Joy Frank, James Hyungsuk Kang, Abhijeet Nande, Jinqian Gong, Farshad Farid, Changsheng Su, Bryon D. Staebler
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Publication number: 20220213829Abstract: A vehicle system (100) includes a conversion catalyst (116), a temperature sensor (156), an indication device (142), and an exhaust gas aftertreatment system controller (132). The conversion catalyst (116) is configured to receive exhaust gas. The temperature sensor (156) is configured to sense a conversion catalyst temperature of the conversion catalyst (116). The indication device (142) is operable between a static state and an impure fuel alarm state. The exhaust gas aftertreatment system controller (132) is configured to receive the conversion catalyst temperature from the temperature sensor (156). The exhaust gas aftertreatment system controller (132) is also configured to compare the conversion catalyst temperature to a conversion catalyst temperature lower threshold. The exhaust gas aftertreatment system controller (132) is also configured to compare the conversion catalyst temperature to a conversion catalyst temperature upper threshold.Type: ApplicationFiled: June 10, 2019Publication date: July 7, 2022Applicant: Cummins Emission Solutions Inc.Inventors: Gautam Sharma, Deepak Joy Frank, James Hyungsuk Kang, Abhijeet Nande, Jinqian Gong, Farshad Farid, Changsheng Su, Bryon D. Staebler
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Patent number: 11105245Abstract: A system for diagnosing an improper reductant concentration includes: a selective catalytic reduction (SCR) catalyst unit, a doser configured to dose reductant into a chamber of the SCR catalyst unit, a reductant concentration sensor, and a controller. In some embodiments, the controller is configured to: direct the doser to dose the reductant into the chamber of the SCR catalyst unit, based on information received from the reductant concentration sensor, determine a reductant concentration level in the chamber of the SCR catalyst unit, compare a measured system-out NOx value to at least one benchmark value corresponding to the determined reductant concentration level, and determine a status of the reductant dosed by the doser based on the comparison of the measured system-out NOx value to the at least one benchmark value.Type: GrantFiled: December 11, 2017Date of Patent: August 31, 2021Assignee: Cummins Emission Solutions Inc.Inventors: Varun R. Rajagopal, Farshad Farid, Jinqian Gong
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Publication number: 20190309671Abstract: A system for diagnosing an improper reductant concentration includes: a selective catalytic reduction (SCR) catalyst unit, a doser configured to dose reductant into a chamber of the SCR catalyst unit, a reductant concentration sensor, and a controller. In some embodiments, the controller is configured to: direct the doser to dose the reductant into the chamber of the SCR catalyst unit, based on information received from the reductant concentration sensor, determine a reductant concentration level in the chamber of the SCR catalyst unit, compare a measured system-out NOx value to at least one benchmark value corresponding to the determined reductant concentration level, and determine a status of the reductant dosed by the doser based on the comparison of the measured system-out NOx value to the at least one benchmark value.Type: ApplicationFiled: December 11, 2017Publication date: October 10, 2019Applicant: Cummins Emission Solutions Inc.Inventors: Varun R. Rajagopal, Farshad Farid, Jinqian Gong
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Patent number: 10247080Abstract: An aftertreatment system comprises a SCR system, an engine out NOx (EONOx) adjustment system and a controller. The controller is configured to instruct the EONOx adjustment system to adjust an EONOx amount between a high EONOx level for a first predetermined time and a low EONOx level for a second predetermined time when the SCR system is in a diagnostic enabling condition. The controller determines a SCR system out NOx (SONOx) amount. The controller determines an efficiency parameter of the SCR system from the SONOx amount when the EONOx amount transitions from the low EONOx level to the high EONOx level and if the efficiency parameter satisfies a predetermined threshold. In response to the efficiency parameter not satisfying the predetermined threshold, the controller determines that the SCR system has failed.Type: GrantFiled: June 9, 2016Date of Patent: April 2, 2019Assignee: Cummins Emission Solutions Inc.Inventors: Farshad Farid, Jinqian Gong, Varun R. Rajagopal
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Patent number: 9926827Abstract: An aftertreatment system comprises an exhaust reductant storage tank and a SCR system including a catalyst fluidly coupled thereto. The aftertreatment system also includes a controller configured to interpret an output signal indicative of a catalytic efficiency of the catalyst. The output signal is filtered using a fast filter to obtain a fast filter response signal, and also using a slow filter to obtain a slow filter response signal. It is determined if the fast filter response signal exceeds a first threshold and if the slow filter response signal exceeds a second threshold. In response to determining that the fast filter response signal exceeds the first threshold, and the slow filter signal response exceeds the second threshold, an indication is provided that an improper exhaust reductant is present in the storage tank.Type: GrantFiled: May 1, 2015Date of Patent: March 27, 2018Assignee: CUMMINS EMISSION SOLUTIONS, INC.Inventors: Jaya Chandra-Ramadugu, Farshad Farid, Kwadwo O. Owusu, Sergio Manuel Hernandez-Gonzalez, Joshua Supplee, Andrew Hillery
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Publication number: 20170356322Abstract: An aftertreatment system comprises a SCR system, an engine out NOx (EONOx) adjustment system and a controller. The controller is configured to instruct the EONOx adjustment system to adjust an EONOx amount between a high EONOx level for a first predetermined time and a low EONOx level for a second predetermined time when the SCR system is in a diagnostic enabling condition. The controller determines a SCR system out NOx (SONOx) amount. The controller determines an efficiency parameter of the SCR system from the SONOx amount when the EONOx amount transitions from the low EONOx level to the high EONOx level and if the efficiency parameter satisfies a predetermined threshold. In response to the efficiency parameter not satisfying the predetermined threshold, the controller determines that the SCR system has failed.Type: ApplicationFiled: June 9, 2016Publication date: December 14, 2017Applicant: Cummins Emission Solutions Inc.Inventors: Farshad Farid, Jinqian Gong, Varun R. Rajagopal
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Patent number: 9677445Abstract: Systems and methods to selectively control plurality of dosing modules may include receiving data indicative of an exhaust flow rate. An amount of reductant to be dosed may be determined based, at least in part, on the data indicative of the exhaust flow rate. A decomposition delay time may also be determined and a first dosing module and a second dosing module may be selectively activated. The first dosing module may be selectively activated at a first time and the second dosing module is selectively activated at a second time. The second time is based on the first time and the determined decomposition delay time.Type: GrantFiled: December 13, 2016Date of Patent: June 13, 2017Assignee: Cummins Emission Solutions, Inc.Inventors: Rafael Nunez, Atul Abhyankar, Ken Hummel, Justin Kruer, Tyler Lorenz, Farshad Farid, Arun Shori Sundaravel
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Publication number: 20170089245Abstract: Systems and methods to selectively control plurality of dosing modules may include receiving data indicative of an exhaust flow rate. An amount of reductant to be dosed may be determined based, at least in part, on the data indicative of the exhaust flow rate. A decomposition delay time may also be determined and a first dosing module and a second dosing module may be selectively activated. The first dosing module may be selectively activated at a first time and the second dosing module is selectively activated at a second time. The second time is based on the first time and the determined decomposition delay time.Type: ApplicationFiled: December 13, 2016Publication date: March 30, 2017Applicant: Cummins Emission Solutions, Inc.Inventors: Rafael Nunez, Atul Abhyankar, Ken Hummel, Justin Kruer, Tyler Lorenz, Farshad Farid, Arun Shori Sundaravel
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Patent number: 9551251Abstract: Systems and methods to selectively control plurality of dosing modules may include receiving data indicative of an exhaust flow rate. An amount of reductant to be dosed may be determined based, at least in part, on the data indicative of the exhaust flow rate. A decomposition delay time may also be determined and a first dosing module and a second dosing module may be selectively activated. The first dosing module may be selectively activated at a first time and the second dosing module is selectively activated at a second time. The second time is based on the first time and the determined decomposition delay time.Type: GrantFiled: November 17, 2015Date of Patent: January 24, 2017Assignee: Cummins Emission Solutions, Inc.Inventors: Rafael Nunez, Atul Abhyankar, Ken Hummel, Justin Kruer, Tyler Lorenz, Farshad Farid, Arun Shori Sundaravel
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Publication number: 20160319725Abstract: An aftertreatment system comprises an exhaust reductant storage tank and a SCR system including a catalyst fluidly coupled thereto. The aftertreatment system also includes a controller configured to interpret an output signal indicative of a catalytic efficiency of the catalyst. The output signal is filtered using a fast filter to obtain a fast filter response signal, and also using a slow filter to obtain a slow filter response signal. It is determined if the fast filter response signal exceeds a first threshold and if the slow filter response signal exceeds a second threshold. In response to determining that the fast filter response signal exceeds the first threshold, and the slow filter signal response exceeds the second threshold, an indication is provided that an improper exhaust reductant is present in the storage tank.Type: ApplicationFiled: May 1, 2015Publication date: November 3, 2016Applicant: Cummins Emission Solutions, Inc.Inventors: Jaya Chandra-Ramadugu, Farshad Farid, Kwadwo O. Owusu, Sergio Manuel Hernandez-Gonzalez, Joshua Supplee, Andrew Hillery
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Publication number: 20160069237Abstract: Systems and methods to selectively control plurality of dosing modules may include receiving data indicative of an exhaust flow rate. An amount of reductant to be dosed may be determined based, at least in part, on the data indicative of the exhaust flow rate. A decomposition delay time may also be determined and a first dosing module and a second dosing module may be selectively activated. The first dosing module may be selectively activated at a first time and the second dosing module is selectively activated at a second time. The second time is based on the first time and the determined decomposition delay time.Type: ApplicationFiled: November 17, 2015Publication date: March 10, 2016Applicant: Cummins Emission Solutions, Inc.Inventors: Rafael Nunez, Atul Abhyankar, Ken Hummel, Justin Kruer, Tyler Lorenz, Farshad Farid, Arun Shori Sundaravel
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Patent number: 9267225Abstract: Disclosed is a method of operating a laundry treating appliance having a tub, a rotatable drum within the tub, and a rotatable drive shaft supported in a bearing assembly and mounted to the drum, with the bending moment acting on the bearing assembly being determined and used as an input to control the operation of the appliance.Type: GrantFiled: December 22, 2011Date of Patent: February 23, 2016Assignee: Whirlpool CorporationInventors: Donald E. Erickson, Farshad Farid
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Patent number: 9192892Abstract: Systems and methods to selectively control plurality of dosing modules may include receiving data indicative of an exhaust flow rate. An amount of reductant to be dosed may be determined based, at least in part, on the data indicative of the exhaust flow rate. A decomposition delay time may also be determined and a first dosing module and a second dosing module may be selectively activated. The first dosing module may be selectively activated at a first time and the second dosing module is selectively activated at a second time. The second time is based on the first time and the determined decomposition delay time.Type: GrantFiled: January 16, 2014Date of Patent: November 24, 2015Assignee: Cummins Emission Solutions, Inc.Inventors: Rafael Nunez, Atul Abhyankar, Ken Hummel, Justin Kruer, Tyler Lorenz, Farshad Farid, Arun Shori Sundaravel
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Publication number: 20150196878Abstract: Systems and methods to selectively control plurality of dosing modules may include receiving data indicative of an exhaust flow rate. An amount of reductant to be dosed may be determined based, at least in part, on the data indicative of the exhaust flow rate. A decomposition delay time may also be determined and a first dosing module and a second dosing module may be selectively activated. The first dosing module may be selectively activated at a first time and the second dosing module is selectively activated at a second time. The second time is based on the first time and the determined decomposition delay time.Type: ApplicationFiled: January 16, 2014Publication date: July 16, 2015Applicant: Cummins Emission Solutions, Inc.Inventors: Rafael Nunez, Atul Abhyankar, Ken Hummel, Justin Kruer, Tyler Lorenz, Farshad Farid, Arun Shori Sundaravel
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Patent number: 8991223Abstract: A laundry treating appliance having a drum, defining a treating chamber, with a lifter and a balancing system having at least one balancing ring and a reservoir located in the lifter and a liquid supply system fluidly coupled to the reservoir. Liquid may be supplied to the ring and to the reservoir through the ring to offset an imbalance in a laundry load located within the drum.Type: GrantFiled: December 8, 2010Date of Patent: March 31, 2015Assignee: Whirlpool CorporationInventors: Donald E. Erickson, Farshad Farid, Stephen D. Ostdiek, Vishal Verma, Mark M. Xie
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Patent number: 8701451Abstract: A laundry treating appliance having a drum, defining a treating chamber, with a lifter and a balancing system having at least one balancing ring and a reservoir located in the lifter and a liquid supply system fluidly coupled to the reservoir. Liquid may be supplied to the ring and to the reservoir through the ring to offset an imbalance in a laundry load located within the drum.Type: GrantFiled: December 8, 2010Date of Patent: April 22, 2014Assignee: Whirlpool CorporationInventors: Farshad Farid, Vishal Verma
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Patent number: 8695383Abstract: A laundry treating appliance having a drum, defining a treating chamber, with a lifter and a balancing system having at least one balancing ring and a reservoir located in the lifter and a liquid supply system fluidly coupled to the reservoir. Liquid may be supplied to the ring and to the reservoir through the ring to offset an imbalance in a laundry load located within the drum.Type: GrantFiled: December 8, 2010Date of Patent: April 15, 2014Assignee: Whirlpool CorporationInventors: Donald E. Erickson, Farshad Farid, Dennis L. Kehl, Vishal Verma
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Publication number: 20130160218Abstract: Disclosed is a method of operating a laundry treating appliance having a tub, a rotatable drum within the tub, and a rotatable drive shaft supported in a bearing assembly and mounted to the drum, with the bending moment acting on the bearing assembly being determined and used as an input to control the operation of the appliance.Type: ApplicationFiled: December 22, 2011Publication date: June 27, 2013Applicant: WHIRLPOOL CORPORATIONInventors: DONALD E. ERICKSON, FARSHAD FARID
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Patent number: 8468631Abstract: A method for controlling the operation of a laundry treating appliance resting on a floor and having a rotatable drum defining a treating chamber that includes creating an imbalance in the drum, rotating the drum at least one predetermined speed, determining an out of balance parameter, determining a floor parameter of the floor based on the out of balance parameter, and setting at least one operating parameter based on the floor parameter.Type: GrantFiled: September 28, 2010Date of Patent: June 25, 2013Assignee: Whirlpool CorporationInventors: Farshad Farid, Dennis L. Kehl, Kenneth P. Mitera