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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：US09995195B2
公开(公告)日：2018-06-12
申请号：US15090032
申请日：2016-04-04
Applicant: Tecogen Inc.
Inventor： Jean Roy
CPC classification number: F01N3/30 , F01N3/101 , F01N9/00 , F01N11/002 , F01N13/008 , F01N13/009 , F01N13/0093 , F01N2550/02 , F01N2560/025 , F01N2560/06 , F01N2900/1404 , Y02A50/2324 , Y02T10/22 , Y02T10/47
Abstract: Systems and methods of reducing the emissions of vehicles having a spark ignited internal combustion engine are provided. When the exhaust temperature is less than a set point temperature, the oxygen concentration of the exhaust is increased as the exhaust passes from a first stage catalytic converter to a second stage catalytic converter. The increased oxygen content of the exhaust improves the removal efficiency of carbon monoxide and/or hydrocarbons at the second stage catalytic converter without (or with minimal) reforming nitrogen oxide compounds. The oxygen concentration of the exhaust is not increased when the exhaust temperature is greater than the set point temperature.
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14.发明授权公开(公告)号：US09856767B2
公开(公告)日：2018-01-02
申请号：US14947276
申请日：2015-11-20
Applicant: Tecogen, Inc.
Inventor： Jean Roy
IPC: F01N5/02 , F01N3/02 , F01N3/10 , F01N3/30 , F01N9/00 , F01N13/00 , B01D53/94 , F01N3/04 , F01N3/05 , F01N3/20 , F01N3/28
CPC classification number: F01N3/0205 , B01D53/9454 , B01D53/9477 , B01D2258/014 , F01N3/04 , F01N3/05 , F01N3/101 , F01N3/2046 , F01N3/2889 , F01N3/30 , F01N5/025 , F01N9/00 , F01N13/009 , F01N13/0097 , F01N2240/36 , Y02A50/2324 , Y02T10/16 , Y02T10/22 , Y02T10/26
Abstract: Methods and apparatus for removing undesired pollutants from exhausts streams of spark-ignited internal-combustion engines in vehicles while producing electrical energy as a byproduct. The apparatus includes a reduction catalyst, a thermoelectric generator (TEG), and an oxidation catalyst. The TEG cools the exhaust stream and generates electricity. The exhaust stream is oxygenated after passing through the TEG and prior to passing through the oxidation catalyst.
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公开(公告)号：US5333539A
公开(公告)日：1994-08-02
申请号：US150279
申请日：1993-11-10
Applicant: James R. Hurley , Paul J. Childs , Timothy J. Norman
Inventor： James R. Hurley , Paul J. Childs , Timothy J. Norman
CPC classification number: H05B6/76 , A23L5/11 , A23L5/15 , A47J37/1271 , A47J37/1295 , H05B6/70 , H05B6/72 , Y10S99/14
Abstract: A microwave radiation source is introduced into a fry basket within the fry tank of a deep fat fryer to reduce the cooking time of food products within the fry basket. Microwave energy is generated outside the fry tank and coupled into the fry basket by a microwave tuned transition, waveguide and antenna. Microwave chokes seal the basket top cover and microwave antenna to basket interface to confine the microwave energy to the fry basket. An electrical safety interlock prevents generation of microwave energy unless the fry basket is sealed.
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Patent Agency Ranking
公开(公告)号：US5291668A
公开(公告)日：1994-03-08
申请号：US863435
申请日：1992-04-03
Applicant: Frederick E. Becker , Leo A. Smolensky , Edward F. Doyle , Francis A. DiBella
Inventor： Frederick E. Becker , Leo A. Smolensky , Edward F. Doyle , Francis A. DiBella
CPC classification number: F26B23/004 , F26B17/107 , F26B3/00 , Y02B30/52 , Y02P70/405
Abstract: This invention relates to a heated steam atmosphere drying system comprising dryer in combination with an exhaust recompression system which is extremely energy efficient and eliminates dangers known to air dryers. The system uses superheated steam as the drying medium, which recirculated through the system where its heat of evaporation and heat of compression is recovered, thereby providing a constant source of heat to the drying chamber. The dryer has inlets whereby feedstock and superheated steam are fed therein. High heat transfer and drying rates are achieved by intimate contact of the superheated steam with the particles being dried The dryer comprises a vessel which enables the feedstock and steam to enter recirculate together. When the feedstock becomes dry it will exit the dryer with the steam and become separated from the steam through the use of a curvilinear louver separator (CLS). The CLS enables removal of fine and ultrafine particles from the dryer. Water vapor separated from the particles in the CLS as superheated steam, may then be recovered and recirculated as steam through the use of a compressor to either directly or indirectly heat the dryer, and a heat exchanger or a heater to directly provide heat to the dryer. This system not only provides a very efficient heat transfer system but results in a minimum carry-over of ultrafine particles thereby eliminating any explosive hazard.
Abstract translation: 本发明涉及一种加热蒸汽气体干燥系统，其包括与排气再压缩系统相结合的干燥器，其具有极高的能量效率并且消除了空气干燥器已知的危险。 该系统使用过热蒸汽作为干燥介质，其通过系统再循环，其中蒸发热量和压缩热被回收，从而为干燥室提供恒定的热源。 干燥器具有入口，其中进料和过热蒸汽被进料。 通过过热蒸汽与待干燥的颗粒的紧密接触来实现高的传热和干燥速率。干燥器包括使原料和蒸汽进入再循环的容器。 当原料干燥时，它将与蒸汽一起离开干燥器，并通过使用曲线百叶窗分离器（CLS）与蒸汽分离。 CLS可以从烘干机中除去细小的超微粒子。 然后，作为过热蒸汽从CLS中的颗粒分离的水蒸气可以通过使用压缩机回收并再循环，以直接或间接地加热干燥器，以及热交换器或加热器以直接向干燥器提供热量 。 该系统不仅提供了非常有效的传热系统，而且导致超细颗粒的最小转运，从而消除了任何爆炸危险。
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17.发明授权公开(公告)号：US10774720B2
公开(公告)日：2020-09-15
申请号：US15800357
申请日：2017-11-01
Applicant: Tecogen, Inc.
Inventor： Ahmed F. Ghoniem , Jean Roy
IPC: F01N3/02 , F01N3/10 , F01N3/20 , F01N3/30 , F01N9/00 , F01N3/04 , F01N3/22 , F01N3/32 , F01N3/021 , F01N3/035
Abstract: An exhaust aftertreatment system includes a first catalytic converter, an oxidation catalyst including a storage catalyst, an air injector, and a cooling unit. The exhaust aftertreatment system is fluidly coupled to an output of a spark-ignited internal combustion engine that operates in the rich regime during acceleration and the lean regime during deceleration. In one aspect, the storage catalyst stores ammonia produced while the engine operates in the rich regime. The stored ammonia reacts with nitrogen oxide compounds produced when the engine operates in the lean regime. In another aspect, the nitrogen oxide compounds react with ammonia produced while the engine operates in the rich regime.
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公开(公告)号：US07239034B2
公开(公告)日：2007-07-03
申请号：US11078191
申请日：2005-03-11
Applicant: Joseph B. Gehret, Jr.
Inventor： Joseph B. Gehret, Jr.
CPC classification number: H02P9/04 , B60L3/003 , B60L8/003 , B60L2230/34 , B60L2240/36 , F02C6/18 , F02D29/06 , F02D41/0205 , F02D41/021 , F02D2250/24 , Y02E20/14 , Y02T10/642 , Y02T10/7083 , Y02T10/7088 , Y02T90/12
Abstract: A combined heat and AC power generating system is disclosed having black start capability for the full time, simultaneous production of both electricity and heat. Heat generated within the system is captured and used for heating applications such as heating building air and tap water. The power generating system comprises an engine, generator, rectifier, variable frequency drive inverter, and inverter control electronics. The system provides improved efficiency and prolonged engine life by always operating the engine with its throttle fully open to obtain maximum efficiency and the engine is normally operated near its stall point. In this operating state the inverter control electronics adjust the power output from the inverter to control the speed of the engine. This is done by increasing the power output from the inverter when the power drawn by the load decreases. This causes the engine to operate closer to its stall point and it slows down. The power from the inverter is decreased when the power drawn by the load increases. This causes the engine to operate further from its stall point and it speeds up. The slight power changes to facilitate this operation will always be drawn from or distributed to the electric utility grid so there is no wasted power. The inverter control electronics are responsive to signals from loads such as refrigeration loads to cause the frequency of the inverter output to change to permit the refrigeration load to operate more efficiently.
Abstract translation: 公开了一种具有黑色启动能力的组合式热交流发电系统，用于全时间同时生产电和热。 在系统内产生的热量被捕获并用于加热应用，例如加热建筑空气和自来水。 发电系统包括发动机，发电机，整流器，变频驱动逆变器和逆变器控制电子装置。 该系统通过总是使发动机的油门完全打开来提供更高的效率和延长的发动机寿命，以获得最大效率，并且发动机通常在其停顿点附近操作。 在这种运行状态下，变频器控制电子装置调整变频器的功率输出，控制发动机的转速。 这是通过在负载下降的情况下增加逆变器的功率输出来实现的。 这使得发动机操作更接近其失速点并且其减速。 当负载拉动的功率增加时，逆变器的功率会降低。 这使得发动机从其停顿点进一步操作并且其加速。 轻微的功率变化以便于此操作将始终从电力公用电网中分配或分配到电力系统中，因此不会浪费电力。 变频器控制电子设备响应于来自诸如制冷负载的负载的信号，以使变频器输出的频率改变，以允许制冷负载更有效地运行。
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公开(公告)号：US20060277896A1
公开(公告)日：2006-12-14
申请号：US11449164
申请日：2006-06-08
Applicant: Joseph Gehret
Inventor： Joseph Gehret
IPC: F02D41/14
CPC classification number: F02D41/1441 , F02D2041/1432 , F02D2200/0802
Abstract: A method for controlling internal combustion engine emissions, including the steps of reading signals from sensors in an engine exhaust manifold and catalytic converter exhaust, an upstream one of the sensors being provided with an air-fuel mixture setpoint, comparing signal values with previous average values and automatically adjusting the air-fuel mixture set point to vary the fuel mixture fed to the engine.
Abstract translation: 一种用于控制内燃机排放的方法，包括从发动机排气歧管和催化转化器排气中的传感器读取信号的步骤，上游一个传感器设有空气 - 燃料混合物设定点，将信号值与先前的平均值进行比较 并自动调节空气 - 燃料混合物设定点以改变供给发动机的燃料混合物。
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20.发明授权
公开(公告)号：US5315981A
公开(公告)日：1994-05-31
申请号：US931676
申请日：1992-08-18
Applicant: Tze-Ning Chen
Inventor： Tze-Ning Chen
CPC classification number: F01L1/08 , F02B69/02 , F02M21/0215 , F02M21/029 , F02B1/04 , F02B2075/027 , F02B3/06 , Y02T10/32
Abstract: A method for converting a diesel engine to a natural gas fueled engine, the method comprising the steps of providing new cam profiles on a cam shaft portion of the diesel engine, the new cam profiles being operative to close intake valves of cylinder heads of the engine during intake strokes, operative to close exhaust valves of the cylinder heads, and operative no earlier than the exhaust valves closures to open associated intake valves, modifying portions of the cylinder heads to adapt the cylinder heads to accept spark plugs, fixing spark plugs in the cylinder heads, providing means for conveying natural gas fuel to the intake valves, providing a blower for supplying air under pressure to the intake valves, and providing an after-cooler for cooling the air supplied by the blower prior to the air reaching the intake valves.
Abstract translation: 一种用于将柴油发动机转换成天然气燃料发动机的方法，所述方法包括以下步骤：在所述柴油发动机的凸轮轴部分上提供新的凸轮轮廓，所述新的凸轮轮廓可操作以关闭所述发动机的气缸盖的进气门 在进气冲程期间，操作以关闭气缸盖的排气门，并且不早于排气门关闭以打开相关联的进气门，修改气缸盖的部分以使汽缸盖接受火花塞，将火花塞固定在 提供用于将天然气燃料输送到进气门的装置，提供用于将压力下的空气供给到进气阀的鼓风机，并且在空气到达进气阀之前提供用于冷却由鼓风机供应的空气的后冷却器 。
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