Patents by Inventor David Gon Oh
David Gon Oh 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: 11732790Abstract: A vehicle includes an engine, an electric machine, a torque converter, a weldment, an engine disconnect clutch, and a torque converter lockup clutch. The engine has a crankshaft. The electric machine has a rotor. The torque converter has an impeller and a turbine. The weldment is configured to rotate about an axis and to transfer power from the crankshaft and the rotor to the impeller. The weldment has a first hub, a second hub, a torque converter cover, an impeller housing, and a third hub. The engine disconnect clutch is configured to rotatably connect and disconnect the crankshaft to and from the weldment. The torque converter lockup clutch is configured to rotatably connect and disconnect the turbine to and from the weldment.Type: GrantFiled: September 8, 2020Date of Patent: August 22, 2023Assignee: Ford Global Technologies, LLCInventors: Matthew David Hammond, Gregory Daniel Goleski, Bryant L. Poynter, David Gon Oh, Bhaskar Marathe
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Patent number: 11364786Abstract: A transmission including an electric machine, a torque converter and a planetary gearset in a transmission housing that is connected to an engine. A turbine shaft is configured to transfer torque from the engine and the electric machine to the planetary gear set. A disconnect clutch selectively couples the input shaft from the engine to the torque converter housing of the torque converter. The disconnect clutch includes a disconnect clutch piston and a first balance dam. A torque converter clutch selectively connects the torque converter housing to the turbine and the turbine shaft. The torque converter clutch includes a torque converter clutch piston and a second balance dam. Ports in the housing permit automatic transmission fluid to flow between the turbine shaft and the torque converter clutch piston; the turbine shaft and the torque converter clutch piston; and the turbine shaft, the first balance dam, and the second balance dam.Type: GrantFiled: November 12, 2020Date of Patent: June 21, 2022Assignee: FORD GLOBAL TECHNOLOGIES, LLCInventors: Matthew David Hammond, Gregory Daniel Goleski, Bryant L. Poynter, David Gon Oh
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Publication number: 20220145971Abstract: A propulsion system for an electric vehicle including an internal combustion engine and an electric machine disposed in a transmission housing that is attached to the engine. An engine vibration damper is disposed between the engine and the electric machine. A torque converter connects the engine to the turbine shaft and is disposed in the housing radially inboard of the windings of the electric machine. A turbine shaft connected to the electric machine is configured to transfer torque from the engine and the electric machine through the turbine shaft to a planetary gear set connected to the turbine shaft. A disconnect clutch is operatively connected between the engine and the electric machine and is disposed in the housing radially inboard the windings of the electric machine and is connected to the turbine shaft.Type: ApplicationFiled: November 12, 2020Publication date: May 12, 2022Inventors: Matthew David HAMMOND, Gregory Daniel GOLESKI, Bryant L. POYNTER, David Gon OH, Bhaskar MARATHE
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Publication number: 20220144071Abstract: A transmission including an electric machine, a torque converter and a planetary gearset in a transmission housing that is connected to an engine. A turbine shaft is configured to transfer torque from the engine and the electric machine to the planetary gear set. A disconnect clutch selectively couples the input shaft from the engine to the torque converter housing of the torque converter. The disconnect clutch includes a disconnect clutch piston and a first balance dam. A torque converter clutch selectively connects the torque converter housing to the turbine and the turbine shaft. The torque converter clutch includes a torque converter clutch piston and a second balance dam. Ports in the housing permit automatic transmission fluid to flow between the turbine shaft and the torque converter clutch piston; the turbine shaft and the torque converter clutch piston; and the turbine shaft, the first balance dam, and the second balance dam.Type: ApplicationFiled: November 12, 2020Publication date: May 12, 2022Inventors: Matthew David HAMMOND, Gregory Daniel GOLESKI, Bryant L. POYNTER, David Gon OH
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Publication number: 20220074477Abstract: A vehicle includes an engine, an electric machine, a torque converter, a weldment, an engine disconnect clutch, and a torque converter lockup clutch. The engine has a crankshaft. The electric machine has a rotor. The torque converter has an impeller and a turbine. The weldment is configured to rotate about an axis and to transfer power from the crankshaft and the rotor to the impeller. The weldment has a first hub, a second hub, a torque converter cover, an impeller housing, and a third hub. The engine disconnect clutch is configured to rotatably connect and disconnect the crankshaft to and from the weldment. The torque converter lockup clutch is configured to rotatably connect and disconnect the turbine to and from the weldment.Type: ApplicationFiled: September 8, 2020Publication date: March 10, 2022Inventors: Matthew David Hammond, Gregory Daniel Goleski, Bryant L. Poynter, David Gon Oh, Bhaskar Marathe
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Patent number: 11052745Abstract: This disclosure describes powersplit hybrid transaxles for hybrid vehicles. An exemplary hybrid transaxle may include a dual sprocket assembly at least partially disposed between an engine and a first electric machine (e.g., a generator). A power transfer unit, such as a planetary gear set, may be nested within the dual sprocket assembly. Chains may operatively connect the power transfer unit to driven sprockets of a second electric machine (e.g., a traction motor) and a differential to provide torque to vehicle drive wheels. The proposed hybrid transaxles provide improved efficiency and compact packaging configurations.Type: GrantFiled: March 25, 2020Date of Patent: July 6, 2021Assignee: FORD GLOBAL TECHNOLOGIES, LLCInventors: David Allen Janson, David Gon Oh
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Patent number: 10787071Abstract: A powertrain includes a first planetary gearset configured to establish a fixedly linear speed relationship among a first rotor, an engine crankshaft, and a second rotor. The powertrain further includes a gearing assembly configured to alternately selectively establish a plurality of proportional speed relationships between the second rotor and an output shaft. The gearing assembly further includes a second planetary gearset having a lockup clutch configured to selectively couple two rotatable elements of the second planetary gearset.Type: GrantFiled: September 22, 2017Date of Patent: September 29, 2020Assignee: Ford Global Technologies, LLCInventors: David Gon Oh, Gregory Daniel Goleski, David Allen Janson
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Patent number: 10767742Abstract: A transmission uses a chain and sprocket final drive that provides all final drive torque multiplication in addition to transferring power to the differential axis. The transmission includes a front support structure that provides for a small driving sprocket. The front support includes an insert made of hardened material that can serve as the inner bearing race for the driving sprocket. In some embodiments, four fluid passageways are provided to the torque converter. In some embodiments, the park gear may be integrated with the driven sprocket.Type: GrantFiled: December 8, 2016Date of Patent: September 8, 2020Assignee: Ford Global Technologies, LLCInventors: David Allen Janson, Gregory Daniel Goleski, David Gon Oh
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Patent number: 10744865Abstract: A hybrid transaxle permits location of a traction motor in a more favorable location, decreasing the risk of occupant injury in a vehicle collision. Axis transfer gearing moves the generator off the engine axis, which permits placing the traction motor further forward without interference with the generator. The gearing is confined to two gear planes, reducing the transaxle width.Type: GrantFiled: October 9, 2018Date of Patent: August 18, 2020Assignee: Ford Global Technologies, LLCInventors: David Allen Janson, Jeffrey Edward Maurer, David Gon Oh, Bruce Granstrom
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Publication number: 20200108708Abstract: A hybrid transaxle permits location of a traction motor in a more favorable location, decreasing the risk of occupant injury in a vehicle collision. Axis transfer gearing moves the generator off the engine axis, which permits placing the traction motor further forward without interference with the generator. The gearing is confined to two gear planes, reducing the transaxle width.Type: ApplicationFiled: October 9, 2018Publication date: April 9, 2020Inventors: David Allen Janson, Jeffrey Edward Maurer, David Gon Oh, Bruce Granstrom
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Patent number: 10543740Abstract: A powertrain includes an engine and an electric machine. The powertrain further includes a planetary gearset including a a first rotatable element fixedly coupled to an engine crankshaft, a second rotatable element fixedly coupled to the electric machine, and a third rotatable element driveably connected to an intermediate shaft. The powertrain further includes a lockup clutch configured to selectively couple two of the first rotatable element, the second rotatable element, and the third rotatable element.Type: GrantFiled: August 1, 2017Date of Patent: January 28, 2020Assignee: FORD GLOBAL TECHNOLOGIES, LLCInventors: David Gon Oh, David Allen Janson, Gregory Daniel Goleski, Matthew David Hammond
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Patent number: 10308104Abstract: A hybrid transaxle permits location of a traction motor in a more favorable location, decreasing the risk of occupant injury in a vehicle collision. Axis transfer gearing moves the generator off the engine axis. This permits placing the traction motor further forward without interference with the generator.Type: GrantFiled: January 13, 2017Date of Patent: June 4, 2019Assignee: Ford Global Technologies, LLCInventors: David Gon Oh, David Allen Janson
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Patent number: 10308107Abstract: A transmission includes first, second, and third planetary gear sets (PGS). A first electric machine is fixedly coupled to a sun gear of the first PGS. A second electric machine is fixedly coupled to a carrier of the first PGS. A brake is selectively holding a ring gear of the first PGS against rotation. First and second clutches selectively couple the first and second electric machines, respectively, to a portion of the second and third PGS, respectively.Type: GrantFiled: October 20, 2017Date of Patent: June 4, 2019Assignee: Ford Global Technologies, LLCInventors: Xiaowu Zhang, David Gon Oh, David Allen Janson, Mark John Jennings, Gregory Daniel Goleski
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Publication number: 20190118641Abstract: A transmission includes first, second, and third planetary gear sets (PGS). A first electric machine is fixedly coupled to a sun gear of the first PGS. A second electric machine is fixedly coupled to a carrier of the first PGS. A brake is selectively holding a ring gear of the first PGS against rotation. First and second clutches selectively couple the first and second electric machines, respectively, to a portion of the second and third PGS, respectively.Type: ApplicationFiled: October 20, 2017Publication date: April 25, 2019Inventors: Xiaowu ZHANG, David Gon OH, David Allen JANSON, Mark John JENNINGS, Gregory Daniel GOLESKI
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Publication number: 20190092156Abstract: A powertrain includes a first planetary gearset configured to establish a fixedly linear speed relationship among a first rotor, an engine crankshaft, and a second rotor. The powertrain further includes a gearing assembly configured to alternately selectively establish a plurality of proportional speed relationships between the second rotor and an output shaft. The gearing assembly further includes a second planetary gearset having a lockup clutch configured to selectively couple two rotatable elements of the second planetary gearset.Type: ApplicationFiled: September 22, 2017Publication date: March 28, 2019Inventors: David Gon OH, Gregory Daniel GOLESKI, David Allen JANSON
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Publication number: 20190039449Abstract: A powertrain includes an engine and an electric machine. The powertrain further includes a planetary gearset including a a first rotatable element fixedly coupled to an engine crankshaft, a second rotatable element fixedly coupled to the electric machine, and a third rotatable element driveably connected to an intermediate shaft. The powertrain further includes a lockup clutch configured to selectively couple two of the first rotatable element, the second rotatable element, and the third rotatable element.Type: ApplicationFiled: August 1, 2017Publication date: February 7, 2019Inventors: David Gon OH, David Allen JANSON, Gregory Daniel GOLESKI, Matthew David HAMMOND
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Patent number: 10082196Abstract: A power split hybrid transaxle includes an axis transfer chain and a final drive planetary gear set. The components are arranged such that the power split planetary gear set is opposite the final drive planetary gear set with both located at the front of the transmission. This minimized the axial length of the transaxle by limiting the number of components that must be staggered axially. Furthermore, this permits use of electric machines with a large diameter and short axial length which also reduces the total axial length of the transaxle.Type: GrantFiled: September 1, 2016Date of Patent: September 25, 2018Assignee: Ford Global Technologies, LLCInventors: David Allen Janson, Gregory Daniel Goleski, David Gon Oh, Jeffrey Edward Maurer
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Patent number: 10081239Abstract: Two hybrid transaxles permit location of a traction motor in a more favorable location, decreasing the risk of occupant injury in a vehicle collision. Each transaxle uses a direction preserving power transfer mechanism to transfer power from the traction motor to a countershaft such that the countershaft rotates in the same direction as the traction motor. Each of the power transfer mechanisms permit more freedom of location for the traction motor axis than would be possible with a single gear pair or a mechanism that uses gearing on the input axis.Type: GrantFiled: November 14, 2016Date of Patent: September 25, 2018Assignee: Ford Global Technologies, LLCInventors: David Allen Janson, Gregory Daniel Goleski, David Gon Oh
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Publication number: 20180201114Abstract: A hybrid transaxle permits location of a traction motor in a more favorable location, decreasing the risk of occupant injury in a vehicle collision. Axis transfer gearing moves the generator off the engine axis. This permits placing the traction motor further forward without interference with the generator.Type: ApplicationFiled: January 13, 2017Publication date: July 19, 2018Inventors: David Gon Oh, David Allen Janson
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Publication number: 20180163835Abstract: A transmission uses a chain and sprocket final drive that provides all final drive torque multiplication in addition to transferring power to the differential axis. The transmission includes a front support structure that provides for a small driving sprocket. The front support includes an insert made of hardened material that can serve as the inner bearing race for the driving sprocket. In some embodiments, four fluid passageways are provided to the torque converter. In some embodiments, the park gear may be integrated with the driven sprocket.Type: ApplicationFiled: December 8, 2016Publication date: June 14, 2018Inventors: David Allen Janson, Gregory Daniel Goleski, David Gon Oh