Patents by Inventor Mahesh Chand Aggarwal
Mahesh Chand Aggarwal 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: 10352278Abstract: Various methods and systems are provided for an exhaust gas recirculation (EGR) EGR cooler for an engine system. In one example, the EGR cooler includes a first section with a first group of tubes adapted to flow exhaust gases, and also includes a first group of passages formed by exterior surfaces of the first group of tubes and adapted to flow coolant from a coolant source. The EGR cooler also includes a second section including a second group of tubes adapted to flow coolant from the coolant source, and a second group of passages formed by exterior surfaces of the second group of tubes and adapted to flow the exhaust gas from the first group of tubes.Type: GrantFiled: August 19, 2016Date of Patent: July 16, 2019Assignee: GE Global Sourcing LLCInventors: Gregory Alan Marsh, Suresh Rama Reddy Govindappa, Venu Gummadavelli Gupta, Mahesh Chand Aggarwal
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Publication number: 20180051660Abstract: Various methods and systems are provided for an exhaust gas recirculation (EGR) EGR cooler for an engine system. In one example, the EGR cooler includes a first section with a first group of tubes adapted to flow exhaust gases, and also includes a first group of passages formed by exterior surfaces of the first group of tubes and adapted to flow coolant from a coolant source. The EGR cooler also includes a second section including a second group of tubes adapted to flow coolant from the coolant source, and a second group of passages formed by exterior surfaces of the second group of tubes and adapted to flow the exhaust gas from the first group of tubes.Type: ApplicationFiled: August 19, 2016Publication date: February 22, 2018Inventors: Gregory Alan Marsh, Suresh Rama Reddy Govindappa, Venu Gummadavelli Gupta, Mahesh Chand Aggarwal
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Patent number: 8402929Abstract: A system for cooling an engine on a vehicle without a coolant based intercooler and intermediate duct, the system including an air-to-oil radiator system configured to cool oil that flows through an engine, an air-to-air radiator system configured to cool air that flows through the engine and further configured to operate in conjunction with the air-to-oil radiator system to provide cool air for use with the air-to-oil radiator system, and a slow flow coolant radiator configured to cool a coolant provided to cool the engine and further provided to operate in conjunction with the air-to-oil radiator system. A method for cooling oil in an engine without a coolant based intercooler and intermediate duct is also disclosed.Type: GrantFiled: September 16, 2008Date of Patent: March 26, 2013Assignee: General Electric CompanyInventors: Gregory Alan Marsh, Mahesh Chand Aggarwal, Kendall Roger Swenson
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Patent number: 7798134Abstract: A system, kit, and service method for exhaust gas recirculation cooling are described. In one example, a removable cooling system for an engine, the engine in a vehicle car body, the system comprising: a removable package including a first exhaust gas recirculation cooler, a second exhaust gas recirculation cooler, and a third exhaust gas recirculation cooler, the first, second, and third coolers coupled together in series, where the removable package is located at a top of the vehicle car body and where the removable package is removably coupled to the vehicle as a unit.Type: GrantFiled: May 7, 2008Date of Patent: September 21, 2010Assignee: General Electric CompanyInventors: Gregory Alan Marsh, Mahesh Chand Aggarwal
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Patent number: 7757678Abstract: A method of operating an engine having exhaust gas recirculation from an exhaust manifold of the engine to an intake manifold of the engine, the engine in a locomotive or other vehicle car body, the engine further having an intake system turbocharger with an air-cooled intercooler, the method including cooling the exhaust gas recirculation via a first airflow generated by car body motion, cooling compressed engine induction air in the air-cooled intercooler via a second airflow, and cooling the exhaust gas recirculation via the second airflow.Type: GrantFiled: May 7, 2008Date of Patent: July 20, 2010Assignee: General Electric CompanyInventors: Gregory Alan Marsh, Mahesh Chand Aggarwal
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Publication number: 20090277428Abstract: A method of operating an engine having exhaust gas recirculation from an exhaust manifold of the engine to an intake manifold of the engine, the engine in a locomotive or other vehicle car body, the engine further having an intake system turbocharger with an air-cooled intercooler, the method including cooling the exhaust gas recirculation via a first airflow generated by car body motion, cooling compressed engine induction air in the air-cooled intercooler via a second airflow, and cooling the exhaust gas recirculation via the second airflow.Type: ApplicationFiled: May 7, 2008Publication date: November 12, 2009Applicant: GENERAL ELECTRIC COMPANYInventors: Gregory Alan Marsh, Mahesh Chand Aggarwal
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Publication number: 20090277429Abstract: A system, kit, and service method for exhaust gas recirculation cooling are described. In one example, a removable cooling system for an engine, the engine in a vehicle car body, the system comprising: a removable package including a first exhaust gas recirculation cooler, a second exhaust gas recirculation cooler, and a third exhaust gas recirculation cooler, the first, second, and third coolers coupled together in series, where the removable package is located at a top of the vehicle car body and where the removable package is removably coupled to the vehicle as a unit.Type: ApplicationFiled: May 7, 2008Publication date: November 12, 2009Applicant: GENERAL ELECTRIC COMPANYInventors: Gregory Alan Marsh, Mahesh Chand Aggarwal
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Publication number: 20090078219Abstract: A system for cooling an engine on a vehicle without a coolant based intercooler and intermediate duct, the system including an air-to-oil radiator system configured to cool oil that flows through an engine, an air-to-air radiator system configured to cool air that flows through the engine and further configured to operate in conjunction with the air-to-oil radiator system to provide cool air for use with the air-to-oil radiator system, and a slow flow coolant radiator configured to cool a coolant provided to cool the engine and further provided to operate in conjunction with the air-to-oil radiator system. A method for cooling oil in an engine without a coolant based intercooler and intermediate duct is also disclosed.Type: ApplicationFiled: September 16, 2008Publication date: March 26, 2009Inventors: Gregory Alan Marsh, Mahesh Chand Aggarwal, Kendall Roger Swenson
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Patent number: 6230668Abstract: A cooling system (10) for a turbocharged locomotive engine (12) including a two stage intercooler (20) for conditioning the combustion air (16). A first coolant loop (32) includes a first stage intercooler (38), the engine coolant passages (22), a radiator (34), a first tank (36), an oil cooler (30), and a first pump (40). A second coolant loop (42) includes a second stage intercooler (44) a subcooler (48), a second tank (46), and a second pump (50). A fluid connection is provided between the first coolant loop (32) and the second coolant loop (42) to provide heat there between during conditions of overcooling of the second coolant loop (42). Flow control valves forming a portion of first coolant loop (32) may be embodied in a single rotor-sleeve flow control valve (130).Type: GrantFiled: May 22, 2000Date of Patent: May 15, 2001Assignee: General Electric CompanyInventors: Gregory Alan Marsh, Brian Lane Walter, Peter Loring Valentine, Mahesh Chand Aggarwal, Abul Kalam Mohammad Shariful Islam
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Patent number: 6098576Abstract: An enhanced split cooling system for a turbocharger and an engine includes an oil cooler, a three-way valve assembly and a four-way valve assembly for controlling the flow of coolant, and radiators and subcoolers, for controlling coolant temperature. The valve assemblies are independently controllable to direct coolant through an oil cooler and a turbocharger intercooler either directly from the engine if the oil cooler and intercooler require heating or from the radiators and subcoolers if the oil cooler and intercooler require cooling. Depending upon the engine operating temperature, the valve assemblies can be configured to establish at least three different coolant processing modes.Type: GrantFiled: February 12, 1999Date of Patent: August 8, 2000Assignee: General Electric CompanyInventors: Theodore John Nowak, Jr., Gregory Alan Marsh, Peter Loring Valentine, Mahesh Chand Aggarwal, Wayne Arthur Rhodes, Geoffrey Daniel Smith