Patents by Inventor Akshit Markan
Akshit Markan 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: 20240102709Abstract: A refrigeration system comprises a variable speed compressor and a first evaporator. A second evaporator is operably coupled in series with the first evaporator. A first valve is coupled to the variable speed compressor and the first evaporator. A second valve is fluidly coupled to the second evaporator, and a pressure regulator is coupled to the second valve.Type: ApplicationFiled: November 29, 2023Publication date: March 28, 2024Applicant: WHIRLPOOL CORPORATIONInventors: Andre Goncalez Ribeiro, Akshit Markan, Ryan Gregory Wasielewski
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Publication number: 20240097156Abstract: An electric vehicle includes a first heat exchanger positioned adjacent to a front of the electric vehicle and configured to transfer heat generated from a first heat generating system to an ambient environment. The electric vehicle may further include a second heat exchanger positioned adjacent to a rear of the electric vehicle and configured to transfer heat generated from a second heat generating system to the ambient environment, and an air supply plenum positioned longitudinally between the first heat exchanger and the second heat exchanger and in fluid communication with the ambient environment. The air supply plenum may define a cooling air pathway extending between the ambient environment and the second heat exchanger. The air supply plenum may isolate air flowing through the cooling air pathway from air circulating within the electric vehicle.Type: ApplicationFiled: September 15, 2023Publication date: March 21, 2024Inventors: Mohamad Aslani, Yatish Chandra, Aiden Cohan, Seth Derouen, Akshit Markan, Derek McVay, Mozhgan Rahimi, Ben Watson
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Publication number: 20240097231Abstract: The present disclosure provides a method of managing thermal loads in the powertrain of an electric vehicle and controlling various electronic components of a powertrain thermal management system. The method may include heating a coolant of a powertrain coolant loop utilizing waste heat from a liquid-cooled powertrain component (e.g., an electric motor, a DC-DC converter, etc.), measuring a coolant temperature, and utilizing combined feedforward and feedback control methods for different components (pump(s), radiator fan(s), valve(s)) of the powertrain thermal management system.Type: ApplicationFiled: September 12, 2023Publication date: March 21, 2024Inventors: Namitha Anjaneyaswamy, Girish Barade, Brandon Dunn, Behrooz Karimi, Akshit Markan, Derek McVay, Shervin Shoai Naini, Aris Papadopoulos
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Patent number: 11885544Abstract: A refrigeration system comprises a variable speed compressor and a first evaporator. A second evaporator is operably coupled in series with the first evaporator. A first valve is coupled to the variable speed compressor and the first evaporator. A second valve is fluidly coupled to the second evaporator, and a pressure regulator is coupled to the second valve.Type: GrantFiled: December 4, 2019Date of Patent: January 30, 2024Assignee: Whirlpool CorporationInventors: Andre Goncalez Ribeiro, Akshit Markan, Ryan Gregory Wasielewski
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Publication number: 20230415612Abstract: The present disclosure provides a method of managing thermal loads in an electric vehicle and controlling various electronic components of a thermal management system. The method may comprise heating a battery coolant of a battery coolant loop utilizing waste heat from a battery to form a heated battery coolant, heating a refrigerant of a battery refrigeration loop by exchanging heat with the heated battery coolant, and measuring refrigerant temperature(s) and pressure(s) at an output of a chiller. The measured temperature(s) and pressure(s) may be utilized by the thermal management system as feedback signals for performing a proportional-integral-derivative control to compute an electronic expansion valve position command.Type: ApplicationFiled: May 30, 2023Publication date: December 28, 2023Inventors: Brandon Christopher Dunn, Behrooz Karimi, Akshit Markan
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Publication number: 20230364962Abstract: An integrated thermal management system for a fuel cell electric vehicle is disclosed. The integrated thermal management system includes a fuel cell system, a brake resistor, a fuel cell coolant loop that includes a fuel cell radiator thermally and fluidly coupled to the fuel cell system, a brake resistor coolant loop that includes a brake resistor radiator thermally and fluidly coupled to the brake resistor, and a heat exchanger loop that includes a coolant-coolant heat exchanger thermally and fluidly coupled to the fuel cell coolant loop and the brake resistor coolant loop. In a fuel cell cooling operating mode, heat is transferred from the fuel cell system to an ambient environment through the fuel cell radiator and the brake resistor radiator.Type: ApplicationFiled: October 7, 2022Publication date: November 16, 2023Inventors: Christian Appel, Aiden Cohan, Rachel Cook, Mohamed Ibrahim Eldesouky Azab, Rohan Gumaste, Jaeseung Lee, Akshit Markan, William Marley, Derek McVay, Hamideh Pourhashem, Manuel Varwick
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Publication number: 20230365026Abstract: The present disclosure provides a method of managing thermal loads in a fuel cell electric vehicle. The method may include measuring a coolant temperature at an outlet of a fuel cell radiator, calculating a fuel cell coolant flow value, calculating a fuel cell heat generation value, calculating a feedback portion of a fuel cell radiator fan speed command using the coolant temperature at the outlet of the fuel cell radiator, calculating a feedforward portion of the fuel cell radiator fan speed command using an ambient temperature, the fuel cell coolant flow value, and the fuel cell heat generation value calculating the fuel cell radiator fan speed command using the feedforward portion and the feedback portion, and controlling a fuel cell radiator fan speed using the fuel cell radiator fan speed command.Type: ApplicationFiled: May 23, 2023Publication date: November 16, 2023Inventors: Brandon Christopher Dunn, Erik Virgil Lindstrom, Akshit Markan, Aris Papadopoulos, Rahul Shetty
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Patent number: 11772450Abstract: A vehicle has a thermal management system that comprises an electric power source loop comprising at least one battery. The thermal management system further comprises a heating component thermally coupled to the electric power source loop. When an ambient temperature is less than a first threshold, the heating component pre-heats the at least one battery. In exemplary embodiments, the heating component includes at least one brake resistor that is coupled to the electric power source loop.Type: GrantFiled: July 22, 2022Date of Patent: October 3, 2023Assignee: Nikola CorporationInventors: Aiden Cohan, Rachel Cook, Akshit Markan, Derek McVay, Mitchell Shinn, Katherine Smith
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Patent number: 11673448Abstract: The present disclosure provides a thermal management system for an electric vehicle. The electric vehicle may include a cabin, a battery system, a battery coolant loop including a battery coolant line thermally coupled to the battery system, a heat pump loop including a heat pump line thermally coupled to an internal heat exchanger, and a refrigerant-coolant heat exchanger thermally coupled to the battery coolant loop and the heat pump loop. The thermal management system may be configured to provide heating or cooling to the cabin or battery system depending on an operating mode.Type: GrantFiled: July 20, 2021Date of Patent: June 13, 2023Assignee: Nikola CorporationInventors: Aiden Cohan, Akshit Markan, Derek McVay
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Publication number: 20220355641Abstract: A vehicle has a thermal management system that comprises an electric power source loop comprising at least one battery. The thermal management system further comprises a heating component thermally coupled to the electric power source loop. When an ambient temperature is less than a first threshold, the heating component pre-heats the at least one battery. In exemplary embodiments, the heating component includes at least one brake resistor that is coupled to the electric power source loop.Type: ApplicationFiled: July 22, 2022Publication date: November 10, 2022Inventors: Aiden Cohan, Rachel Cook, Akshit Markan, Derek McVay, Mitchell Shinn, Katherine Smith
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Publication number: 20220324288Abstract: The present disclosure provides a thermal management system for an electric vehicle. The electric vehicle may include a cabin, a battery system, a battery coolant loop including a battery coolant line thermally coupled to the battery system, a heat pump loop including a heat pump line thermally coupled to an internal heat exchanger, and a refrigerant-coolant heat exchanger thermally coupled to the battery coolant loop and the heat pump loop. The thermal management system may be configured to provide heating or cooling to the cabin or battery system depending on an operating mode.Type: ApplicationFiled: July 20, 2021Publication date: October 13, 2022Inventors: Aiden Cohan, Akshit Markan, Derek McVay
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Patent number: 11458799Abstract: An electric vehicle has a thermal management system that comprises a common radiator, a brake resistor loop, and an electric power source loop. The brake resistor loop comprises a brake resistor and a brake resistor controller that are coupled to the common radiator. The electric power source loop comprises an electric power source coupled to the common radiator. When the brake resistor loop is determined to be in operation, the common radiator is utilized by the brake resistor loop to absorb heat generated by the brake resistor loop. When the brake resistor loop is determined to not be in operation, the common radiator is utilized by the electric power source to absorb heat generated by the electric power source loop.Type: GrantFiled: December 21, 2021Date of Patent: October 4, 2022Assignee: Nikola CorporationInventors: Aiden Cohan, Rachel Cook, Akshit Markan, Mitchell Shinn, Katherine Smith
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Publication number: 20220194165Abstract: An electric vehicle has a thermal management system that comprises a common radiator, a brake resistor loop, and an electric power source loop. The brake resistor loop comprises a brake resistor and a brake resistor controller that are coupled to the common radiator. The electric power source loop comprises an electric power source coupled to the common radiator. When the brake resistor loop is determined to be in operation, the common radiator is utilized by the brake resistor loop to absorb heat generated by the brake resistor loop. When the brake resistor loop is determined to not be in operation, the common radiator is utilized by the electric power source to absorb heat generated by the electric power source loop.Type: ApplicationFiled: December 21, 2021Publication date: June 23, 2022Inventors: Aiden Cohan, Rachel Cook, Akshit Markan, Mitchell Shinn, Katherine Smith
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Patent number: 11358493Abstract: The present disclosure provides a method of managing thermal loads in a fuel cell vehicle. The method may comprise heating a fuel cell coolant of a fuel cell coolant loop utilizing waste heat from a fuel cell to form a heated fuel cell coolant, heating a battery coolant of a battery coolant loop utilizing waste heat from a battery to form a heated battery coolant, heating a refrigerant of a battery refrigeration loop by exchanging heat with the heated battery coolant, and superheating the refrigerant of the battery refrigeration loop by exchanging heat with the heated fuel cell coolant.Type: GrantFiled: December 13, 2021Date of Patent: June 14, 2022Assignee: Nikola CorporationInventors: Aiden Cohan, Akshit Markan, Mitchell Shinn, Katherine Smith, Rachel Cook
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Publication number: 20220111762Abstract: The present disclosure provides a method of managing thermal loads in a fuel cell vehicle. The method may comprise heating a fuel cell coolant of a fuel cell coolant loop utilizing waste heat from a fuel cell to form a heated fuel cell coolant, heating a battery coolant of a battery coolant loop utilizing waste heat from a battery to form a heated battery coolant, heating a refrigerant of a battery refrigeration loop by exchanging heat with the heated battery coolant, and superheating the refrigerant of the battery refrigeration loop by exchanging heat with the heated fuel cell coolant.Type: ApplicationFiled: May 13, 2021Publication date: April 14, 2022Inventors: Aiden Cohan, Akshit Markan, Mitchell Shinn, Katherine Smith, Rachel Cook
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Publication number: 20220111763Abstract: The present disclosure provides a method of managing thermal loads in a fuel cell vehicle. The method may comprise heating a fuel cell coolant of a fuel cell coolant loop utilizing waste heat from a fuel cell to form a heated fuel cell coolant, heating a battery coolant of a battery coolant loop utilizing waste heat from a battery to form a heated battery coolant, heating a refrigerant of a battery refrigeration loop by exchanging heat with the heated battery coolant, and superheating the refrigerant of the battery refrigeration loop by exchanging heat with the heated fuel cell coolant.Type: ApplicationFiled: December 13, 2021Publication date: April 14, 2022Inventors: Aiden Cohan, Akshit Markan, Mitchell Shinn, Katherine Smith, Rachel Cook
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Patent number: 11279258Abstract: The present disclosure provides a method of managing thermal loads in a fuel cell vehicle. The method may comprise heating a fuel cell coolant of a fuel cell coolant loop utilizing waste heat from a fuel cell to form a heated fuel cell coolant, heating a battery coolant of a battery coolant loop utilizing waste heat from a battery to form a heated battery coolant, heating a refrigerant of a battery refrigeration loop by exchanging heat with the heated battery coolant, and superheating the refrigerant of the battery refrigeration loop by exchanging heat with the heated fuel cell coolant.Type: GrantFiled: May 13, 2021Date of Patent: March 22, 2022Assignee: Nikola CorporationInventors: Aiden Cohan, Akshit Markan, Mitchell Shinn, Katherine Smith, Rachel Cook
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Publication number: 20210172664Abstract: A refrigeration system comprises a variable speed compressor and a first evaporator. A second evaporator is operably coupled in series with the first evaporator. A first valve is coupled to the variable speed compressor and the first evaporator. A second valve is fluidly coupled to the second evaporator, and a pressure regulator is coupled to the second valve.Type: ApplicationFiled: December 4, 2019Publication date: June 10, 2021Applicant: WHIRLPOOL CORPORATIONInventors: Andre Goncalez Ribeiro, Akshit Markan, Ryan Gregory Wasielewski