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公开(公告)号：US10774724B2
公开(公告)日：2020-09-15
申请号：US15496828
申请日：2017-04-25
Applicant: Tecogen, Inc.
Inventor： Ahmed F. Ghoniem , Robert Panora , Jean Roy , Joseph Gehret
IPC: F01N3/02 , F01N3/08 , F01N3/20 , F01N13/00 , F01N9/00 , B01D53/94 , F01N3/021 , B01D53/96 , F01N3/035 , F01N3/10 , F01N13/08 , F01N3/32 , F01N11/00
Abstract: An exhaust aftertreatment system includes a first stage catalytic converter, a second stage catalytic converter, and a conduit extending from the first stage catalytic converter to the second stage catalytic converter. The conduit passes through an exhaust gas intercooler, between the first and second stage catalytic converts, that reduces the temperature of the exhaust to about 300° F. to about 500° F. Air is ejected into the exhaust conduit to increase the oxygen concentration in the exhaust before it passes through the second stage catalytic converter. The air can be ejected from an air ejection conduit that extends to an engine charger compressor or a compressed air conduit that extends from the engine charger compressor, such as a turbo charger and/or a supercharger, to the engine. A gas particulate filter can be disposed in the exhaust conduit or it can be integrated with the second stage catalytic converter, for example as a catalyzed gas particulate filter.
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公开(公告)号：US20190234284A1
公开(公告)日：2019-08-01
申请号：US16380671
申请日：2019-04-10
Applicant: Tecogen, Inc.
Inventor： Ahmed F. Ghoniem , Jean Roy , Joseph Gehret
IPC: F01N13/00 , B01D53/94 , F01N3/02 , F01N13/08 , F01N3/10 , F01N3/035 , F01N9/00 , F01N11/00 , B01D53/96 , F01N3/021 , F01N3/08 , F01N3/32
CPC classification number: F01N13/009 , B01D53/9418 , B01D53/9445 , B01D53/9454 , B01D53/9477 , B01D53/9495 , B01D53/96 , B01D2255/102 , B01D2255/904 , B01D2255/915 , F01N3/0205 , F01N3/021 , F01N3/035 , F01N3/0821 , F01N3/0835 , F01N3/10 , F01N3/32 , F01N9/00 , F01N9/002 , F01N11/007 , F01N13/08 , F01N2900/0418 , F01N2900/08 , F01N2900/10 , F01N2900/1404 , Y02A50/2322 , Y02T10/20 , Y02T10/22 , Y02T10/47
Abstract: Exhaust generated from an internal combustion engine includes particulates and gas-phase volatile hydrocarbon condensables. The exhaust is cooled in an exhaust gas cooler from a first temperature to a second temperature such that a first portion of the gas-phase volatile hydrocarbon condensables in the exhaust condense to the liquid phase and a second portion of the gas-phase volatile hydrocarbon condensables in the exhaust condense on black carbon particles to form semivolatile brown carbon particulates. Some or all of the liquid-phase volatile hydrocarbon condensables and the semivolatile brown carbon particulates are trapped in a gasoline particulate filter or a catalyzed gasoline particulate filter located downstream of the exhaust gas cooler.
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Patent Agency Ranking
公开(公告)号：US09702306B2
公开(公告)日：2017-07-11
申请号：US14881557
申请日：2015-10-13
Applicant: Tecogen Inc.
Inventor： Joseph Gehret , Jean Roy , Jian Wen
CPC classification number: F02D31/001 , F02B63/04 , F02D29/06 , F02D41/0205 , F02D41/26 , F02D41/28 , F02D2041/281 , F02D2041/285 , F02D2200/101 , G05B15/02
Abstract: A system and method for controlling an internal combustion engine and electrical inverter system for powering a load, including controlling the operation of a spark-ignited internal combustion engine prime mover used in generation of electrical power by way of a generator. A microprocessor (e.g., DSP) controlled circuit taking engine speed input from an engine speed signal is used to control the operation of the internal combustion engine prime mover so that it is preferably operated substantially at wide open throttle.
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公开(公告)号：US11936327B2
公开(公告)日：2024-03-19
申请号：US17808430
申请日：2022-06-23
Applicant: Tecogen Inc.
Inventor： Joseph Gehret , Robert A. Panora , Jian Wen
Abstract: A hybrid power-generator system includes an engine, an electric generator, first and second rectifiers, first and second DC-DC voltage converters, a DC bus, an inverter, and one or more controllers. The system provides a unique method of joining two power sources such that the relative proportion utilized can be changed to any value seamlessly, such as to avoid daily and/or seasonal variations in utility charges. Since the AC output portion of the circuit is independent of the utility grid, power can be supplied at variable frequencies to motor loads with significant positive impacts in load efficiency. Power increases required by the load(s) that occur rapidly can utilize the electrical grid to assist for the brief transient, allowing the engine, which is maintained at a fixed and wide-open-throttle position, to continue operation and in a more gradual process to resume its blend target for power generation.
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公开(公告)号：US20220416700A1
公开(公告)日：2022-12-29
申请号：US17808430
申请日：2022-06-23
Applicant: Tecogen Inc.
Inventor： Joseph Gehret , Robert A. Panora , Jian Wen
Abstract: A hybrid power-generator system includes an engine, an electric generator, first and second rectifiers, first and second DC-DC voltage converters, a DC bus, an inverter, and one or more controllers. The system provides a unique method of joining two power sources such that the relative proportion utilized can be changed to any value seamlessly, such as to avoid daily and/or seasonal variations in utility charges. Since the AC output portion of the circuit is independent of the utility grid, power can be supplied at variable frequencies to motor loads with significant positive impacts in load efficiency. Power increases required by the load(s) that occur rapidly can utilize the electrical grid to assist for the brief transient, allowing the engine, which is maintained at a fixed and wide-open-throttle position, to continue operation and in a more gradual process to resume its blend target for power generation.
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公开(公告)号：US20180230886A1
公开(公告)日：2018-08-16
申请号：US15892599
申请日：2018-02-09
Applicant: Tecogen, Inc.
Inventor： Ahmed F. Ghoniem , Jean Roy , Joseph Gehret
CPC classification number: F01N13/009 , B01D53/9418 , B01D53/9445 , B01D53/9454 , B01D53/9477 , B01D53/9495 , B01D53/96 , B01D2255/102 , B01D2255/904 , B01D2255/915 , F01N3/0205 , F01N3/021 , F01N3/035 , F01N3/0821 , F01N3/0835 , F01N3/10 , F01N3/32 , F01N9/00 , F01N9/002 , F01N11/007 , F01N13/08 , F01N2900/0418 , F01N2900/08 , F01N2900/10 , F01N2900/1404 , Y02A50/2322 , Y02T10/20 , Y02T10/22 , Y02T10/47
Abstract: Exhaust generated from an internal combustion engine includes particulates and gas-phase volatile hydrocarbon condensables. The exhaust is cooled in an exhaust gas cooler from a first temperature to a second temperature such that a first portion of the gas-phase volatile hydrocarbon condensables in the exhaust condense to the liquid phase and a second portion of the gas-phase volatile hydrocarbon condensables in the exhaust condense on black carbon particles to form semivolatile brown carbon particulates. Some or all of the liquid-phase volatile hydrocarbon condensables and the semivolatile brown carbon particulates are trapped in a gasoline particulate filter or a catalyzed gasoline particulate filter located downstream of the exhaust gas cooler.
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公开(公告)号：US20170101942A1
公开(公告)日：2017-04-13
申请号：US14881557
申请日：2015-10-13
Applicant: Tecogen Inc.
Inventor： Joseph Gehret , Jean Roy , Jian Wen
CPC classification number: F02D31/001 , F02B63/04 , F02D29/06 , F02D41/0205 , F02D41/26 , F02D41/28 , F02D2041/281 , F02D2041/285 , F02D2200/101 , G05B15/02
Abstract: A system and method for controlling an internal combustion engine and electrical inverter system for powering a load, including controlling the operation of a spark-ignited internal combustion engine prime mover used in generation of electrical power by way of a generator. A microprocessor (e.g., DSP) controlled circuit taking engine speed input from an engine speed signal is used to control the operation of the internal combustion engine prime mover so that it is preferably operated substantially at wide open throttle.
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