Patents by Inventor Tenghua Tom Shieh
Tenghua Tom Shieh 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: 11877423Abstract: A thermal management system to cool one or more battery packs of a battery system may include a heat pipe arrangement that includes a plurality of heat pipes, having a planar configuration, in thermal contact with the one or more battery packs to draw heat therefrom, and a heat sink arrangement that includes a plurality of heat sinks, in thermal contact with two or more edges of the heat pipe arrangement, to dissipate heat away from the heat pipe arrangement.Type: GrantFiled: October 8, 2020Date of Patent: January 16, 2024Assignees: Toyota Motor Engineering and Manufacturing North America, Inc., Toyota Jidosha Kabushiki KaishaInventors: Gaohua Zhu, Tenghua Tom Shieh, Evan B. Fleming, Swetha Minupuri, Debasish Banerjee, Ryuta Sugiura, Yusuke Suzuki, Takayoshi Tanaka, Satoko Tofukuji
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Publication number: 20220117116Abstract: A thermal management system to cool one or more battery packs of a battery system may include a heat pipe arrangement that includes a plurality of heat pipes, having a planar configuration, in thermal contact with the one or more battery packs to draw heat therefrom, and a heat sink arrangement that includes a plurality of heat sinks, in thermal contact with two or more edges of the heat pipe arrangement, to dissipate heat away from the heat pipe arrangement.Type: ApplicationFiled: October 8, 2020Publication date: April 14, 2022Applicant: Toyota Motor Engineering and Manufacturing North America, Inc.Inventors: Gaohua Zhu, Tenghua Tom Shieh, Evan B. Fleming, Swetha Minupuri, Debasish Banerjee, Ryuta Sugiura, Yusuke Suzuki, Takayoshi Tanaka, Satoko Tofukuji
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Patent number: 10865671Abstract: An oil pan assembly having an oil pan and an intake pipe attached to a bottom of an engine block is provided. The oil pan assembly includes an inner plate mounted to the oil pan so as to be disposed between the oil pan and a bottom surface of the engine block. The inner plate is configured to slow the flow of oil to an intake pipe so as to provide additional time for entrained oil to de-areate.Type: GrantFiled: April 28, 2015Date of Patent: December 15, 2020Assignee: Toyota Motor Engineering & Manufacturing North America, Inc.Inventors: Tenghua Tom Shieh, Shohei Nomura, Swetha Minupuri, Dong-Hyun Lee
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Patent number: 10468124Abstract: The present invention provides a process for designing and producing a cooling fluid for use in a cooling system. The process uses molecular dynamics to calculate the thermal properties of one or more fluid-nanoparticle solutions, and thereby aids in the study, selection and/or production of desired cooling fluids based on first principle simulations.Type: GrantFiled: January 23, 2012Date of Patent: November 5, 2019Assignee: Toyota Motor Engineering & Manufacturing North America, Inc.Inventors: Tenghua Tom Shieh, Shohei Nomura, Erich Benjamin Fiederlein, Kiyotaka Yamashita
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Patent number: 10273886Abstract: The present invention provides a process for reducing abnormal combustion within a combustion chamber of the engine. The process can include simulation of the piston-driven internal combustion engine with oil droplets from the crankcase entering into the combustion chamber. In addition, the oil drops entering into the combustion chamber can be simulated as hot spots, as can simulation of fuel combustion within the combustion chamber. A probability of pre-ignition for at least a portion of the simulated hot spots as a function of the simulated fuel combustion and the simulated hot spots within the combustion chamber can be calculated and based on the calculation a combustion chamber parameter can be altered such that pre-ignition within the combustion chamber is reduced.Type: GrantFiled: January 18, 2012Date of Patent: April 30, 2019Assignee: Toyota Motor Engineering & Manufacturing North America, Inc.Inventors: Tenghua Tom Shieh, Oana Nitulescu, Wei Liu Liu, Kiyotaka Yamashita
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Patent number: 10119464Abstract: An engine assembly having a cover for catching oil splatted by crankshaft gear and a balance shaft gear is provided. The crankshaft gear is mechanically coupled to the balance shaft gear. The balance shaft gear may be partially submerged in a pool of oil formed at the bottom of the crankcase housing. The cover includes a first cover portion having a back wall and a pair of side walls extending along a top portion and a bottom portion. The top portion covers a respective portion of a circumferential edge of the crankshaft gear. The bottom portion a respective portion of a circumferential edge of the balance shaft gear. Accordingly, oil splattered by the crankshaft gear and the balance shaft gear is caught by the cover, reducing oil entrainment and increasing oil pumping efficiency. Further, the cover helps prevent oil mist from escaping the system so as to reduce oil consumption.Type: GrantFiled: March 11, 2016Date of Patent: November 6, 2018Assignee: Toyota Motor Engineering & Manufacturing North America, Inc.Inventors: Tenghua Tom Shieh, Swetha Minupuri, Shohei Nomura
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Patent number: 10055523Abstract: A process for analyzing incomplete fuel oxidation in an internal combustion engine is provided. The process includes simulating a cylinder with a cylinder wall and a piston within the cylinder for the internal combustion engine. Based on the simulation of the internal combustion engine operation, a pressure and a temperature are determined at a predetermined location within the cylinder for at least one piston crank angle. In addition, combustion of fuel at the predetermined location within the cylinder is simulated and a determination of combustion products is provided. In this manner, simulation of incomplete oxidants produced during operation of the internal combustion engine is afforded and can be used for the design of engine components such as cylinder walls, piston heads, piston rings, valves, spark plugs, and the like.Type: GrantFiled: April 24, 2014Date of Patent: August 21, 2018Assignee: Toyota Motor Engineering & Manufacturing North America, Inc.Inventors: Tenghua Tom Shieh, Kiyotaka Yamashita, Oana Nitulescu
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Publication number: 20170260900Abstract: An engine assembly having a cover for catching oil splatted by crankshaft gear and a balance shaft gear is provided. The crankshaft gear is mechanically coupled to the balance shaft gear. The balance shaft gear may be partially submerged in a pool of oil formed at the bottom of the crankcase housing. The cover includes a first cover portion having a back wall and a pair of side walls extending along a top portion and a bottom portion. The top portion covers a respective portion of a circumferential edge of the crankshaft gear. The bottom portion a respective portion of a circumferential edge of the balance shaft gear. Accordingly, oil splattered by the crankshaft gear and the balance shaft gear is caught by the cover, reducing oil entrainment and increasing oil pumping efficiency. Further, the cover helps prevent oil mist from escaping the system so as to reduce oil consumption.Type: ApplicationFiled: March 11, 2016Publication date: September 14, 2017Inventors: Tenghua Tom Shieh, Swetha Minupuri, Shohei Nomura
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Patent number: 9567880Abstract: An oil pan assembly and an engine assembly having a vortex generating unit configured to de-aerate entrained oil before reaching the intake pipe is provided. The oil pan assembly includes an inner plate mounted to the oil pan so as to be disposed between the oil pan and a bottom surface of the engine block. The vortex generating unit is disposed on the inner plate and generates a vortex which de-aerates entrained oil.Type: GrantFiled: April 28, 2015Date of Patent: February 14, 2017Assignee: Toyota Motor Engineering & Manufacturing North America, Inc.Inventors: Tenghua Tom Shieh, Bogdan Radu Kucinschi, Dong-Hyun Lee
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Patent number: 9528407Abstract: An oil separation device of the having a separation chamber configured to separate micron particles of oil from crankcase gas is provided. The separation chamber has passage having a first end and a second end, the second end has a diameter smaller than the first end. The second end is spaced apart from a bottom wall of a chamber. Crankcase gas is drawn along the passage in the same direction as oil falling along the inner wall of the passage. Crankcase gas exits the second end in a path different than oil falling from the second end. The oil separating device may further include a dividing wall having through-holes and a blocking wall disposed above the through-holes so as to facilitate the removal of oil from crankcase gas.Type: GrantFiled: December 12, 2013Date of Patent: December 27, 2016Assignee: Toyota Motor Engineering & Manufacturing North America, Inc.Inventors: Shohei Nomura, Tenghua Tom Shieh, Swetha Minupuri
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Publication number: 20160319714Abstract: An oil pan assembly and an engine assembly having a vortex generating unit configured to de-aerate entrained oil before reaching the intake pipe is provided. The oil pan assembly includes an inner plate mounted to the oil pan so as to be disposed between the oil pan and a bottom surface of the engine block. The vortex generating unit is disposed on the inner plate and generates a vortex which de-aerates entrained oil.Type: ApplicationFiled: April 28, 2015Publication date: November 3, 2016Inventors: Tenghua Tom Shieh, Bogdan Radu Kucinschi, Dong-Hyun Lee
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Publication number: 20160319715Abstract: An oil pan assembly having an oil pan and an intake pipe attached to a bottom of an engine block is provided. The oil pan assembly includes an inner plate mounted to the oil pan so as to be disposed between the oil pan and a bottom surface of the engine block. The inner plate is configured to slow the flow of oil to an intake pipe so as to provide additional time for entrained oil to de-areate.Type: ApplicationFiled: April 28, 2015Publication date: November 3, 2016Inventors: Tenghua Tom Shieh, Shohei Nomura, Swetha Minupuri, Dong-Hyun Lee
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Patent number: 9273647Abstract: An air filter assembly for use with an internal combustion engine is provided. The air filter assembly includes a casing having an inlet configured to receive air from the environment, the casing having a passage, and an outlet disposed downstream the passage. A collection chamber collects particles from the drawn air. The collection chamber is disposed downstream from the inlet and upstream from the outlet. A partition is disposed between passage and the collection chamber. The partition has openings configured to allow particles to pass through. A side port is downstream the partition and in fluid communication with the passage. An internal combustion engine utilizing the air filter assembly is also provided. The internal combustion engine includes an air manifold, a combustion chamber and a filter. The air filter assembly is disposed upstream the filter.Type: GrantFiled: April 22, 2014Date of Patent: March 1, 2016Assignee: Toyota Motor Engineering & Manufacturing North America, Inc.Inventors: Tenghua Tom Shieh, Dong-Hyun Lee, Swetha Minupuri
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Publication number: 20150310138Abstract: A process for analyzing incomplete fuel oxidation in an internal combustion engine is provided. The process includes simulating a cylinder with a cylinder wall and a piston within the cylinder for the internal combustion engine. Based on the simulation of the internal combustion engine operation, a pressure and a temperature are determined at a predetermined location within the cylinder for at least one piston crank angle. In addition, combustion of fuel at the predetermined location within the cylinder is simulated and a determination of combustion products is provided. In this manner, simulation of incomplete oxidants produced during operation of the internal combustion engine is afforded and can be used for the design of engine components such as cylinder walls, piston heads, piston rings, valves, spark plugs, and the like.Type: ApplicationFiled: April 24, 2014Publication date: October 29, 2015Applicant: TOYOTA MOTOR ENGINEERING & MANUFACTURING NORTH AMERICA, INC.Inventors: Tenghua Tom Shieh, Kiyotaka Yamashita, Oana Nitulescu
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Publication number: 20150300302Abstract: An air filter assembly for use with an internal combustion engine is provided. The air filter assembly includes a casing having an inlet configured to receive air from the environment, the casing having a passage, and an outlet disposed downstream the passage. A collection chamber collects particles from the drawn air. The collection chamber is disposed downstream from the inlet and upstream from the outlet. A partition is disposed between passage and the collection chamber. The partition has openings configured to allow particles to pass through. A side port is downstream the partition and in fluid communication with the passage. An internal combustion engine utilizing the air filter assembly is also provided. The internal combustion engine includes an air manifold, a combustion chamber and a filter. The air filter assembly is disposed upstream the filter.Type: ApplicationFiled: April 22, 2014Publication date: October 22, 2015Applicant: Toyota Motor Engineering & Manufacturing North America, Inc.Inventors: Tenghua Tom Shieh, Dong-Hyun Lee, Swetha Minupuri
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Patent number: 9064090Abstract: A process for selecting a piston ring for a piston containing internal combustion engine such that the engine experiences a reduction in lubrication oil consumption (LOC) used therein. The process can include providing engine specifications for an engine for which the piston ring is to be selected and simulating engine temperatures for the engine as a function of the engine specifications. The process can also include simulating bore distortion for the engine as a function of the simulated engine temperatures and simulating piston ring dynamics for the engine as a function of the simulated bore distortion. Once the simulated piston ring dynamics have been obtained, the process can include calculating a plurality of LOC values and selecting a piston ring as a function of the calculated LOC values.Type: GrantFiled: February 16, 2012Date of Patent: June 23, 2015Assignee: Toyota Motor Engineering & Manufacturing North America, Inc.Inventors: Tenghua Tom Shieh, Shohei Nomura, Erich Benjamin Fiederlein
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Publication number: 20150167515Abstract: An oil separation device of the having a separation chamber configured to separate micron particles of oil from crankcase gas is provided. The separation chamber has passage having a first end and a second end, the second end has a diameter smaller than the first end. The second end is spaced apart from a bottom wall of a chamber. Crankcase gas is drawn along the passage in the same direction as oil falling along the inner wall of the passage. Crankcase gas exits the second end in a path different than oil falling from the second end. The oil separating device may further include a dividing wall having through-holes and a blocking wall disposed above the through-holes so as to facilitate the removal of oil from crankcase gas.Type: ApplicationFiled: December 12, 2013Publication date: June 18, 2015Applicant: TOYOTA MOTOR ENGINEERING & MANUFACTURING NORTH AMERICA, INC.Inventors: Shohei Nomura, Tenghua Tom Shieh, Swetha Minupuri
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Patent number: 9020791Abstract: The present invention provides a process for designing and manufacturing an ignition system for an internal combustion engine. The process can include performing a plurality of simulations that include simulating an electrical circuit with a spark initiating device for igniting the fuel mixture within an internal combustion chamber, an electrical breakdown proximate to the spark initiating device, a plasma arc and an afterglow regime.Type: GrantFiled: December 6, 2011Date of Patent: April 28, 2015Assignee: Toyota Motor Engineering & Maunfacturing North America, Inc.Inventors: Tenghua Tom Shieh, Oana Nitulescu, Bogdan Radu Kucinschi, Kiyotaka Yamashita
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Patent number: 8840380Abstract: An annular device for the temperature control of a pump is provided. That device is in fluid communication with the radiator coolant system of a vehicle, and the engine-warmed coolant flows through the annular device to warm the pump and thaw ice buildup. The device is removable and can be added on to an existing pump without any redesign of the existing pump housing.Type: GrantFiled: January 21, 2011Date of Patent: September 23, 2014Assignee: Toyota Motor Engineering & Manufacturing North America, Inc.Inventors: Tenghua Tom Shieh, Kyle Thomas Bernier, James Guitar, Shohei Nomura
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Patent number: 8826659Abstract: PCV systems are well known in the art and commonly used in turbocharged engines. The ejector creates a pressure drop for additional pull of PCV gas under boosted conditions of the turbocharger engine. The ejector typically includes a first inlet and a second inlet and a sole outlet. The first inlet pulls air from the compressor of the PCV system. The second inlet pulls air from the cyclone separator of the PCV system. Air exiting the ejector is exited to the intake manifold. However, when the turbocharger of the system is off, fresh air can leak in from the inlet from the oil separator thereby preventing the ventilation of blowby. The unwanted air reduces the efficiency of the turbocharger system. Accordingly, an ejector preventing unwanted fresh air flow is needed in the art.Type: GrantFiled: September 27, 2011Date of Patent: September 9, 2014Assignee: Toyota Motor Engineering & Manufacturing North America, Inc.Inventor: Tenghua Tom Shieh