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.

公开(公告)号：US20180230882A1

公开(公告)日：2018-08-16

申请号：US15800357

申请日：2017-11-01

Applicant: Tecogen, Inc.

Inventor： Ahmed F. Ghoniem ,  Jean Roy

IPC: F01N3/30 ,  F01N3/02 ,  F01N3/10

CPC classification number: F01N3/30 ,  F01N3/02 ,  F01N3/0205 ,  F01N3/021 ,  F01N3/035 ,  F01N3/043 ,  F01N3/101 ,  F01N3/106 ,  F01N3/225 ,  F01N3/32 ,  F01N9/002 ,  F01N2240/02 ,  F01N2240/22 ,  F01N2560/025 ,  F01N2560/06 ,  F01N2900/1404 ,  Y02A50/2324 ,  Y02T10/22 ,  Y02T10/47

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.

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.

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.

公开(公告)号：US20160076419A1

公开(公告)日：2016-03-17

申请号：US14947276

申请日：2015-11-20

Applicant: Tecogen, Inc.

Inventor： Jean Roy

IPC: F01N3/02 ,  F01N3/20 ,  F01N13/00 ,  F01N3/30 ,  F01N5/02 ,  F01N9/00 ,  F01N3/10 ,  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.

Abstract translation: 从汽车内的火花点火式内燃机排气流中除去不想要的污染物的方法和装置，同时产生电能作为副产品。 该装置包括还原催化剂，热电发生器（TEG）和氧化催化剂。 TEG冷却废气流并发电。 排气流在通过TEG之后并且在通过氧化催化剂之前被氧化。

公开(公告)号：US20180207582A1

公开(公告)日：2018-07-26

申请号：US15933080

申请日：2018-03-22

Applicant: Tecogen Inc.

Inventor： Jean Roy ,  Robert Panora ,  Daniel W. Ott ,  David J. Wallace

IPC: B01D53/94 ,  B01J37/08 ,  B01J21/06 ,  B01J21/08 ,  B01J23/42 ,  B01J23/44 ,  B01J23/46 ,  B01J23/54 ,  B01J23/60 ,  B01J23/63 ,  B01J23/652 ,  B01J23/656 ,  B01J23/89 ,  B01J37/04 ,  B01J37/03 ,  B01J37/02 ,  B01J37/00 ,  B01J35/10 ,  B01J35/04

CPC classification number: B01D53/9477 ,  B01D53/944 ,  B01D53/945 ,  B01D53/9454 ,  B01D2255/102 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/206 ,  B01D2255/2065 ,  B01D2255/20707 ,  B01D2255/20715 ,  B01D2255/2073 ,  B01D2255/20738 ,  B01D2255/20761 ,  B01D2255/20769 ,  B01D2255/20776 ,  B01D2255/2092 ,  B01D2255/30 ,  B01D2255/9207 ,  B01J21/063 ,  B01J21/08 ,  B01J23/42 ,  B01J23/44 ,  B01J23/462 ,  B01J23/464 ,  B01J23/54 ,  B01J23/60 ,  B01J23/63 ,  B01J23/6525 ,  B01J23/6527 ,  B01J23/6562 ,  B01J23/89 ,  B01J23/8906 ,  B01J23/8926 ,  B01J35/04 ,  B01J35/1014 ,  B01J35/1019 ,  B01J37/0036 ,  B01J37/0215 ,  B01J37/0236 ,  B01J37/0248 ,  B01J37/038 ,  B01J37/04 ,  B01J37/08 ,  Y02A50/2324 ,  Y02T10/22

Abstract: A poison-resistant catalytic converter includes a washcoat having a support material comprised of titania and/or silica and a plurality of platinum group metal particles disposed in the support material. The washcoat is disposed on a substrate having a plurality of cells that define respective apertures. The catalytic converter is resistant to poisoning from sulfur and phosphorous compounds while operating at low temperatures. Applications include spark ignited internal combustion engines in combined heat and power systems, vehicles, combustion turbines, boilers and other applications for utilities, industry and vehicle emissions control.

公开(公告)号：US09956526B2

公开(公告)日：2018-05-01

申请号：US15079938

申请日：2016-03-24

Applicant: Tecogen Inc.

Inventor： Jean Roy ,  Robert Panora ,  Daniel Ott ,  David Wallace

IPC: B01J21/04 ,  B01J21/06 ,  B01J21/08 ,  B01J23/10 ,  B01J23/42 ,  B01J23/44 ,  B01J23/46 ,  B01J23/54 ,  B01J23/56 ,  B01J23/60 ,  B01J23/63 ,  B01J23/89 ,  B01D53/94 ,  B01J23/652 ,  B01J23/656 ,  B01J35/04 ,  B01J37/00 ,  B01J37/02 ,  B01J37/04 ,  B01J37/08 ,  B01J37/03 ,  B01J35/10

CPC classification number: B01D53/9477 ,  B01D53/944 ,  B01D53/945 ,  B01D53/9454 ,  B01D2255/102 ,  B01D2255/1021 ,  B01D2255/1023 ,  B01D2255/1025 ,  B01D2255/206 ,  B01D2255/2065 ,  B01D2255/20707 ,  B01D2255/20715 ,  B01D2255/2073 ,  B01D2255/20738 ,  B01D2255/20761 ,  B01D2255/20769 ,  B01D2255/20776 ,  B01D2255/2092 ,  B01D2255/30 ,  B01D2255/9207 ,  B01J21/063 ,  B01J21/08 ,  B01J23/42 ,  B01J23/44 ,  B01J23/462 ,  B01J23/464 ,  B01J23/54 ,  B01J23/60 ,  B01J23/63 ,  B01J23/6525 ,  B01J23/6527 ,  B01J23/6562 ,  B01J23/89 ,  B01J23/8906 ,  B01J23/8926 ,  B01J35/04 ,  B01J35/1014 ,  B01J35/1019 ,  B01J37/0036 ,  B01J37/0215 ,  B01J37/0236 ,  B01J37/0248 ,  B01J37/038 ,  B01J37/04 ,  B01J37/08 ,  Y02A50/2324 ,  Y02T10/22

Abstract: A poison-resistant catalytic converter includes a washcoat having a support material comprised of titania and/or silica and a plurality of platinum group metal particles disposed in the support material. The washcoat is disposed on a substrate having a plurality of cells that define respective apertures. The catalytic converter is resistant to poisoning from sulfur and phosphorous compounds while operating at low temperatures. Applications include spark ignited internal combustion engines in combined heat and power systems, vehicles, combustion turbines, boilers and other applications for utilities, industry and vehicle emissions control.

公开(公告)号：US09470126B2

公开(公告)日：2016-10-18

申请号：US14721694

申请日：2015-05-26

Applicant: Tecogen Inc.

Inventor： Joseph B. Gehret ,  Robert Panora ,  Ranson Roser ,  Jean P. Roy

IPC: F01N3/02 ,  F01N3/10 ,  F01N3/04 ,  F01N3/05 ,  F01N13/00 ,  F01N9/00 ,  F23J15/02 ,  F23J15/06 ,  F23G7/07 ,  F01N3/28 ,  F01N3/34 ,  F01N3/20 ,  F01N11/00

CPC classification number: F01N3/0205 ,  F01N3/04 ,  F01N3/05 ,  F01N3/101 ,  F01N3/103 ,  F01N3/106 ,  F01N3/2046 ,  F01N3/206 ,  F01N3/2066 ,  F01N3/2889 ,  F01N3/2892 ,  F01N3/34 ,  F01N9/00 ,  F01N11/002 ,  F01N13/009 ,  F01N13/0097 ,  F01N2240/02 ,  F01N2240/20 ,  F01N2240/36 ,  F01N2260/02 ,  F01N2270/02 ,  F01N2410/02 ,  F01N2560/021 ,  F01N2560/06 ,  F01N2610/02 ,  F01N2900/1404 ,  F01N2900/1411 ,  F01N2900/1616 ,  F23G7/07 ,  F23J15/02 ,  F23J15/06 ,  F23J2215/10 ,  F23J2219/10 ,  F23J2219/80 ,  Y02E20/12 ,  Y02E20/363 ,  Y02T10/22 ,  Y02T10/24 ,  Y02T10/26 ,  Y02T10/47

Abstract: A system for reducing ammonia in exhaust gas generated from a lean burn internal combustion engine includes an oxidation catalyst, a selective reduction catalyst (SCR), a cooling unit, and a three-way catalyst. Exhaust gas generated by the engine passes through the oxidation catalyst to oxidize carbon monoxide from the exhaust gas to form carbon dioxide. Nitrous oxide (NOx) compounds in the exhaust gas are reduced in the SCR to form nitrogen and water. The exhaust gas is then cooled in a cooling unit and then passed over the three-way catalyst. The three-way catalyst causes ammonia in the cooled exhaust stream to react to form less harmful compounds, such as nitrogen and water.

Abstract translation: 用于还原由稀燃内燃机产生的废气中的氨的系统包括氧化催化剂，选择还原催化剂（SCR），冷却单元和三元催化剂。 由发动机产生的废气通过氧化催化剂，从废气中氧化一氧化碳，形成二氧化碳。 废气中的一氧化二氮（NOx）化合物在SCR中减少以形成氮和水。 然后将废气在冷却单元中冷却，然后通过三元催化剂。 三元催化剂使得冷却的排气流中的氨反应形成较少的有害化合物，例如氮气和水。

公开(公告)号：US20170284266A1

公开(公告)日：2017-10-05

申请号：US15090032

申请日：2016-04-04

Applicant: Tecogen Inc.

Inventor： Jean Roy

IPC: F01N3/30 ,  F01N9/00 ,  F01N11/00 ,  F01N3/10 ,  F01N13/00

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.

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

IPC: G06F19/00 ,  F02D31/00 ,  F02B63/04 ,  G05B15/02

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.