Patents by Inventor Nader Nasr
Nader Nasr 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: 20200039341Abstract: A drive train includes a first gear set including a sun gear, a ring gear and planetary gears coupling the sun gear to the ring gear, a second gear set including a sun gear, a ring gear and planetary gears coupling the sun gear to the ring gear, a first motor/generator coupled to the first gear set, a second motor/generator coupled to the second gear set, a first clutch that selectively engages the second motor/generator with the first gear set, and a second clutch that selectively engages the ring gear of the second gear set with the planetary gear carrier of at least one of the first gear set and the second gear set. The planetary gears of both sets are rotatably supported by respective planetary gear carriers.Type: ApplicationFiled: October 3, 2019Publication date: February 6, 2020Applicant: Oshkosh Defense, LLCInventors: Jon Morrow, Dave Steinberger, Eric Braun, Andrew Kotloski, Nader Nasr
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Publication number: 20190381990Abstract: A vehicle drive includes a gear set, a first motor/generator coupled to the gear set, a second motor/generator at least selectively rotationally engaged with the gear set, and an engine at least selectively coupled to the gear set and at least selectively coupled to the second motor/generator. The second motor/generator is electrically coupled to the first motor/generator by an electrical power transmission system. The first motor/generator and the second motor/generator are electrically coupled without an energy storage device configured to at least one of (a) provide electrical energy to the first motor/generator or the second motor/generator to power the first motor/generator or the second motor/generator and (b) be charged by electrical energy from the first motor/generator or the second motor/generator.Type: ApplicationFiled: August 22, 2019Publication date: December 19, 2019Applicant: Oshkosh Defense, LLCInventors: Deepak Shukla, Rongjun Zhang, Nader Nasr
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Patent number: 10457134Abstract: A drive train includes a shaft, a first gear set including a sun gear, a ring gear and planetary gears coupling the sun gear to the ring gear, a second gear set including a sun gear, a ring gear and planetary gears coupling the sun gear to the ring gear, a first motor/generator coupled to the first gear set, a second motor/generator coupled to the second gear set, a first clutch that selectively engages the shaft with the second motor/generator and the first gear set, and a second clutch and a third gear set that cooperate to selectively engage the ring gear of the second gear set with the planetary gear carrier of at least one of the first gear set and the second gear set. The planetary gears of both sets are rotatably supported by respective planetary gear carriers.Type: GrantFiled: July 23, 2018Date of Patent: October 29, 2019Assignee: Oshkosh Defense, LLCInventors: Jon Morrow, Dave Steinberger, Eric Braun, Andrew Kotloski, Nader Nasr
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Publication number: 20190291711Abstract: A method of operating a first electric machine and a second electric machine in a vehicle drive includes operating the vehicle drive in a first operating mode by operating the first electric machine to regulate electrical power at a bus to maintain a first voltage on the bus and operating the second electric machine to consume electrical power from the bus. The method includes operating the vehicle drive in a second operating mode by operating the first electric machine to consume electrical power from the bus and operating the second electric machine to regulate electrical power at the bus to maintain a second voltage on the bus. A sum of the electrical power regulated by the first electric machine, the electrical power losses, and the electrical power consumed by the second electric machine is zero in the first operating mode and in the second operating mode.Type: ApplicationFiled: June 7, 2019Publication date: September 26, 2019Applicant: Oshkosh Defense, LLCInventors: Deepak Shukla, Rongjun Zhang, Nader Nasr
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Patent number: 10392000Abstract: A vehicle drive includes a gear set, a first motor/generator coupled to the gear set, a second motor/generator at least selectively rotationally engaged with the gear set, an engine at least selectively coupled to the gear set and selectively coupled to the second motor/generator, and a clutch configured to selectively engage the second motor/generator to the engine. The first motor/generator and the second motor/generator are electrically coupled without an energy storage device configured to at least one of (a) provide electrical energy to the first motor/generator or the second motor/generator to power the first motor/generator or the second motor/generator and (b) be charged by electrical energy from the first motor/generator or the second motor/generator.Type: GrantFiled: November 20, 2017Date of Patent: August 27, 2019Assignee: Oshkosh Defense, LLCInventors: Deepak Shukla, Rongjun Zhang, Nader Nasr
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Patent number: 10315643Abstract: A method of operating a first electric machine and a second electric machine in a vehicle drive includes operating the vehicle drive in: a first operating mode by operating the first electric machine in a voltage mode and the second electric machine in a torque mode; and a second operating mode by operating the first electric machine in the torque mode and the second electric machine in the voltage mode.Type: GrantFiled: September 23, 2016Date of Patent: June 11, 2019Assignee: Oshkosh Defense, LLCInventors: Deepak Shukla, Rongjun Zhang, Nader Nasr
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Publication number: 20180345783Abstract: A drive train includes a shaft, a first gear set including a sun gear, a ring gear and planetary gears coupling the sun gear to the ring gear, a second gear set including a sun gear, a ring gear and planetary gears coupling the sun gear to the ring gear, a first motor/generator coupled to the first gear set, a second motor/generator coupled to the second gear set, a first clutch that selectively engages the shaft with the second motor/generator and the first gear set, and a second clutch and a third gear set that cooperate to selectively engage the ring gear of the second gear set with the planetary gear carrier of at least one of the first gear set and the second gear set. The planetary gears of both sets are rotatably supported by respective planetary gear carriers.Type: ApplicationFiled: July 23, 2018Publication date: December 6, 2018Applicant: Oshkosh Defense, LLCInventors: Jon Morrow, Dave Steinberger, Eric Braun, Andrew Kotloski, Nader Nasr
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Patent number: 10029556Abstract: A drive train for a vehicle includes an engine having an output shaft, a first gear set including a sun gear, a ring gear and planetary gears coupling the sun gear to the ring gear, a second gear set including a sun gear, a ring gear and planetary gears coupling the sun gear to the ring gear, a first motor/generator coupled to the first gear set, a second motor/generator coupled to the second gear set and electrically coupled to the first motor/generator, a first clutch that selectively engages the output shaft of the engine with the second motor/generator, and a second clutch and a third gear set that cooperate to selectively engage the ring gear of the second gear set with the planetary gear carrier of at least one of the first gear set and the second gear set.Type: GrantFiled: August 25, 2016Date of Patent: July 24, 2018Assignee: Oshkosh Defense, LLCInventors: Jon Morrow, Dave Steinberger, Eric Braun, Andrew Kotloski, Nader Nasr
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Publication number: 20180072303Abstract: A vehicle drive includes a gear set, a first motor/generator coupled to the gear set, a second motor/generator at least selectively rotationally engaged with the gear set, an engine at least selectively coupled to the gear set and selectively coupled to the second motor/generator, and a clutch configured to selectively engage the second motor/generator to the engine. The first motor/generator and the second motor/generator are electrically coupled without an energy storage device configured to at least one of (a) provide electrical energy to the first motor/generator or the second motor/generator to power the first motor/generator or the second motor/generator and (b) be charged by electrical energy from the first motor/generator or the second motor/generator.Type: ApplicationFiled: November 20, 2017Publication date: March 15, 2018Applicant: Oshkosh Defense, LLCInventors: Deepak Shukla, Rongjun Zhang, Nader Nasr
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Patent number: 9821789Abstract: A vehicle drive includes a gear set, a first motor/generator coupled to a sun gear of the gear set, a second motor/generator selectively coupled to at least one of (a) a planetary gear carrier of the gear set and (b) a ring gear of the gear set, an engine coupled to the ring gear of the gear set and selectively coupled to the second motor/generator, and a clutch configured to selectively engage the second motor/generator to the engine. The first motor/generator and the second motor/generator are electrically coupled without an energy storage device configured to at least one of (a) provide electrical energy to the first motor/generator or the second motor/generator to power the first motor/generator or the second motor/generator and (b) be charged by electrical energy from the first motor/generator or the second motor/generator.Type: GrantFiled: June 17, 2016Date of Patent: November 21, 2017Assignee: Oshkosh Defense, LLCInventors: Deepak Shukla, Rongjun Zhang, Nader Nasr
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Publication number: 20170008507Abstract: A method of operating a first electric machine and a second electric machine in a vehicle drive includes operating the vehicle drive in: a first operating mode by operating the first electric machine in a voltage mode and the second electric machine in a torque mode; and a second operating mode by operating the first electric machine in the torque mode and the second electric machine in the voltage mode.Type: ApplicationFiled: September 23, 2016Publication date: January 12, 2017Applicant: Oshkosh Defense, LLCInventors: Deepak Shukla, Rongjun Zhang, Nader Nasr
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Publication number: 20160361987Abstract: A drive train for a vehicle includes an engine having an output shaft, a first gear set including a sun gear, a ring gear and planetary gears coupling the sun gear to the ring gear, a second gear set including a sun gear, a ring gear and planetary gears coupling the sun gear to the ring gear, a first motor/generator coupled to the first gear set, a second motor/generator coupled to the second gear set and electrically coupled to the first motor/generator, a first clutch that selectively engages the output shaft of the engine with the second motor/generator, and a second clutch and a third gear set that cooperate to selectively engage the ring gear of the second gear set with the planetary gear carrier of at least one of the first gear set and the second gear set.Type: ApplicationFiled: August 25, 2016Publication date: December 15, 2016Applicant: Oshkosh Defense, LLCInventors: Jon Morrow, Dave Steinberger, Eric Braun, Andrew Kotloski, Nader Nasr
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Publication number: 20160297417Abstract: A vehicle drive includes a gear set, a first motor/generator coupled to a sun gear of the gear set, a second motor/generator selectively coupled to at least one of (a) a planetary gear carrier of the gear set and (b) a ring gear of the gear set, an engine coupled to the ring gear of the gear set and selectively coupled to the second motor/generator, and a clutch configured to selectively engage the second motor/generator to the engine. The first motor/generator and the second motor/generator are electrically coupled without an energy storage device configured to at least one of (a) provide electrical energy to the first motor/generator or the second motor/generator to power the first motor/generator or the second motor/generator and (b) be charged by electrical energy from the first motor/generator or the second motor/generator.Type: ApplicationFiled: June 17, 2016Publication date: October 13, 2016Applicant: Oshkosh CorporationInventors: Deepak Shukla, Rongjun Zhang, Nader Nasr
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Patent number: 9452750Abstract: A method of operating a first motor/generator and a second motor/generator in a vehicle drive includes operating the vehicle drive in a first operating mode and a second operating mode, the first operating mode including operating the first motor/generator as a generator and operating the second motor/generator as a motor, the second operating mode including operating both the first motor/generator as a generator and the second motor/generator as a generator when a first power generation capability associated with the first motor/generator is below a first threshold level, the first motor/generator and the second motor/generator providing electrical power to the DC bus without doing either of (a) providing electrical power to an energy storage device or (b) consuming electrical power from an energy storage device.Type: GrantFiled: September 11, 2015Date of Patent: September 27, 2016Assignee: Oshkosh Defense, LLCInventors: Deepak Shukla, Rongjun Zhang, Nader Nasr
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Patent number: 9428042Abstract: A drive train for a vehicle includes an engine having an output shaft, a first gear set, a second gear set, a first motor/generator coupled to the first gear set, a second motor/generator coupled to the second gear set and electrically coupled to the first motor/generator, a first clutch, and a second clutch. Planetary gears of both sets are rotatably supported by respective planetary gear carriers that are coupled to each other. The first clutch selectively engages the output shaft of the engine with the second motor/generator, and the second clutch and a third gear set operate to selectively engage at least one of the sun gear and the ring gear of the second gear set with the planetary gear carriers of the first and second gear sets.Type: GrantFiled: October 14, 2014Date of Patent: August 30, 2016Assignee: Oshkosh Defense, LLCInventors: Jon Morrow, Dave Steinberger, Eric Braun, Andrew Kotloski, Nader Nasr
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Patent number: 9376102Abstract: A vehicle drive includes a first gear set and a second gear set, a first motor/generator coupled to a sun gear of the first gear set, a second motor/generator selectively coupled to at least one of (a) a planetary gear carrier of the first gear set and (b) a ring gear of the first gear set, an engine coupled to the ring gear of the first gear set and selectively coupled to the second motor/generator, and a clutch configured to selectively engage the second motor/generator to the engine. The first motor/generator and the second motor/generator are electrically coupled without an energy storage device configured to at least one of (a) provide electrical energy to the first motor/generator or the second motor/generator to power the first motor/generator or the second motor/generator and (b) be charged by electrical energy from the first motor/generator or the second motor/generator.Type: GrantFiled: July 29, 2015Date of Patent: June 28, 2016Assignee: Oshkosh Defense, LLCInventors: Deepak Shukla, Rongjun Zhang, Nader Nasr
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Publication number: 20160001765Abstract: A method of operating a first motor/generator and a second motor/generator in a vehicle drive includes operating the vehicle drive in a first operating mode and a second operating mode, the first operating mode including operating the first motor/generator as a generator and operating the second motor/generator as a motor, the second operating mode including operating both the first motor/generator as a generator and the second motor/generator as a generator when a first power generation capability associated with the first motor/generator is below a first threshold level, the first motor/generator and the second motor/generator providing electrical power to the DC bus without doing either of (a) providing electrical power to an energy storage device or (b) consuming electrical power from an energy storage device.Type: ApplicationFiled: September 11, 2015Publication date: January 7, 2016Applicant: Oshkosh Defense, LLCInventors: Deepak Shukla, Rongjun Zhang, Nader Nasr
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Publication number: 20150283894Abstract: A drive train for a vehicle includes an engine having an output shaft, a first gear set, a second gear set, a first motor/generator coupled to the first gear set, a second motor/generator coupled to the second gear set and electrically coupled to the first motor/generator, a first clutch, and a second clutch. Planetary gears of both sets are rotatably supported by respective planetary gear carriers that are coupled to each other. The first clutch selectively engages the output shaft of the engine with the second motor/generator, and the second clutch and a third gear set operate to selectively engage at least one of the sun gear and the ring gear of the second gear set with the planetary gear carriers of the first and second gear sets.Type: ApplicationFiled: October 14, 2014Publication date: October 8, 2015Applicant: Oshkosh CorporationInventors: Jon Morrow, Dave Steinberger, Eric Braun, Andrew Kotloski, Nader Nasr
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Patent number: 9132736Abstract: One embodiment provides a method of operating a first motor/generator and a second motor/generator in a vehicle drive. The first motor/generator is electrically coupled to the second motor/generator by a DC bus. The vehicle drive is configured to propel a vehicle. The method includes operating the first motor/generator as a generator, providing electrical power to the DC bus. The first motor/generator provides the electrical power required by the second motor/generator and the electrical power required to offset losses. The method also includes operating the second motor/generator as a motor, consuming electrical power from the DC bus. The sum of the electrical power provided, the electrical power losses, and the electrical power consumed is zero. The first motor/generator provides electrical power and the second motor/generator consumes electrical power without providing electrical power to an energy storage device or consuming electrical power from an energy storage device.Type: GrantFiled: January 14, 2014Date of Patent: September 15, 2015Assignee: Oshkosh Defense, LLCInventors: Deepak Shukla, Rongjun Zhang, Nader Nasr
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Patent number: 9114804Abstract: One embodiment provides a vehicle drive. The vehicle drive includes a first gear set and a second gear set. Each gear set includes a sun gear, a ring gear, planetary gears, and a planetary gear carrier. The vehicle drive includes a first motor/generator coupled to the sun gear of the first gear set. The vehicle drive includes a second motor/generator coupled to the planetary gear carrier or the ring gear of the first gear set. The second motor/generator is electrically coupled to the first motor/generator. The motor/generators are electrically coupled without an energy storage device. The vehicle drive includes an engine coupled to the ring gear of the first gear set and selectively coupled to the second motor/generator. The vehicle drive includes a first and a second clutch configured to selectively engage the second motor/generator to the planetary gear carrier of the first gear set or the engine.Type: GrantFiled: January 14, 2014Date of Patent: August 25, 2015Assignee: Oshkosh Defense, LLCInventors: Deepak Shukla, Rongjun Zhang, Nader Nasr