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：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：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

IPC: F01N13/00 ,  F01N3/02 ,  F01N3/035 ,  F01N13/08 ,  F01N9/00 ,  F01N3/10 ,  B01D53/94 ,  B01D53/96

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.