公开(公告)号：US20190040786A1

公开(公告)日：2019-02-07

申请号：US15668754

申请日：2017-08-04

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Ivan Flaminio Cozza ,  Claudio Ciaravino ,  Andrea Arnone

IPC: F01N13/08 ,  F01N3/035 ,  F01N3/08 ,  F01N3/20 ,  F01N13/00 ,  B01D53/94

CPC classification number: F01N13/08 ,  B01D53/90 ,  B01D53/9418 ,  B01D53/944 ,  B01D53/9477 ,  B01D2251/2067 ,  B01D2255/1021 ,  B01D2255/1023 ,  F01N3/035 ,  F01N3/0814 ,  F01N3/0842 ,  F01N3/2066 ,  F01N3/28 ,  F01N3/2892 ,  F01N13/009 ,  F01N2240/20 ,  F01N2340/02 ,  F01N2610/02

Abstract: An exhaust gas flow after-treatment (AT) system includes first and second AT devices. The first AT device includes cone with an inlet defined by a surface area having a first geometric center and an outlet defined by a surface area having a second geometric center. The AT system also includes an exhaust passage for carrying the exhaust gas flow from the first AT device cone outlet to the second AT device, and includes an injector for introducing a reductant into the exhaust gas flow within the exhaust passage. The first geometric center is arranged at a predetermined distance from the second geometric center and the inlet surface area is greater than the outlet surface area by a predetermined ratio. The predetermined distance and the predetermined ratio are together configured to induce swirl in and mix the reductant with the exhaust gas flow within the exhaust passage.

公开(公告)号：US09976464B1

公开(公告)日：2018-05-22

申请号：US15346225

申请日：2016-11-08

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Claudio Ciaravino ,  Joshua Clifford Bedford ,  Andrea Arnone

IPC: F01N13/08 ,  F01N3/20 ,  F01N13/00 ,  F01N11/00 ,  F01N3/10 ,  F01N3/021 ,  F01N3/08

CPC classification number: F01N3/2066 ,  F01N3/021 ,  F01N3/0842 ,  F01N3/103 ,  F01N3/2892 ,  F01N11/007 ,  F01N13/008 ,  F01N13/0093 ,  F01N2240/20 ,  F01N2560/02 ,  F01N2610/02 ,  F01N2610/1453

Abstract: An after-treatment (AT) system for an exhaust gas flow from an internal combustion engine includes first and second AT devices positioned in the exhaust gas flow. The AT system also includes an exhaust passage for carrying the flow of exhaust gas from the first AT device to the second AT device. The AT system additionally includes an injector configured to generate a reductant spray into the exhaust passage and a sensor positioned proximate the injector for detecting a concentration of a pollutant in the exhaust gas flow downstream of the first AT device. The AT system furthermore includes a deflector arranged between the injector and the sensor and configured to guide the flow of exhaust gas to the sensor to thereby concentrate the flow of exhaust gas at the sensor and direct the reductant spray away from the sensor to thereby minimize detection of the reductant by the sensor.

公开(公告)号：US10344642B2

公开(公告)日：2019-07-09

申请号：US15612751

申请日：2017-06-02

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Giovanni Montinaro ,  Andrea Dutto ,  Claudio Ciaravino ,  Andrea Arnone ,  Stefano Cassani

IPC: F01N3/20 ,  F01N3/08 ,  F01N3/10 ,  F01N9/00 ,  F01N13/00

Abstract: Systems and methods for controlling a valve for directing an exhaust gas stream through an exhaust duct having a first after treatment device and a second after treatment device in an exhaust system. The method includes receiving sensor signals from a sensor coupled to the second after treatment device. The method includes processing the sensor signals to determine a temperature of the second after treatment device, and determining a position for the valve based on whether the temperature exceeds a pre-defined threshold for the temperature of the second after treatment device. The method includes outputting a control signal to move the valve to a first position in which the exhaust gas stream flows through a first portion of the first after treatment device or a second position in which the exhaust gas stream flows through a second portion of the first after treatment device based on the temperature.

公开(公告)号：US20190063292A1

公开(公告)日：2019-02-28

申请号：US15683930

申请日：2017-08-23

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Claudio Ciaravino ,  Andrea Arnone

IPC: F01N3/28 ,  F01N3/035 ,  F01N3/08 ,  F01N3/10 ,  F01N3/20 ,  B01D53/94

CPC classification number: F01N3/2892 ,  B01D53/9418 ,  B01D53/9422 ,  B01D53/944 ,  B01D53/9477 ,  B01D2251/2067 ,  B01D2255/904 ,  B01D2258/012 ,  F01N3/035 ,  F01N3/0842 ,  F01N3/106 ,  F01N3/2066 ,  F01N13/009 ,  F01N2240/20 ,  F01N2250/02 ,  F01N2250/12 ,  F01N2250/14 ,  F01N2570/14 ,  F01N2610/02

Abstract: An exhaust gas flow after-treatment (AT) system includes first AT device and a second AT device in fluid communication with and positioned in the flow of exhaust gas downstream of the first AT device. The AT system also includes an exhaust passage for carrying the flow of exhaust gas from the first AT device to the second AT device and an injector for introducing a reductant into the exhaust passage. The AT system additionally includes a variable-position mixer arranged within the exhaust passage downstream of the injector. Furthermore, the AT system includes a mechanism configured to regulate the variable-position mixer between and inclusive of a first mixer position configured to increase a swirling motion and turbulence in the exhaust gas flow within the exhaust passage to thereby mix the reductant with the exhaust gas flow, and a second mixer position configured to reduce a backpressure generated by the mixer.

公开(公告)号：US20180128146A1

公开(公告)日：2018-05-10

申请号：US15346225

申请日：2016-11-08

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Claudio Ciaravino ,  Joshua Clifford Bedford ,  Andrea Arnone

IPC: F01N3/20 ,  F01N13/00 ,  F01N11/00 ,  F01N3/10 ,  F01N3/021 ,  F01N3/08

CPC classification number: F01N3/2066 ,  F01N3/021 ,  F01N3/0842 ,  F01N3/103 ,  F01N3/2892 ,  F01N11/007 ,  F01N13/008 ,  F01N13/0093 ,  F01N2240/20 ,  F01N2560/02 ,  F01N2610/02 ,  F01N2610/1453

Abstract: An after-treatment (AT) system for an exhaust gas flow from an internal combustion engine includes first and second AT devices positioned in the exhaust gas flow. The AT system also includes an exhaust passage for carrying the flow of exhaust gas from the first AT device to the second AT device. The AT system additionally includes an injector configured to generate a reductant spray into the exhaust passage and a sensor positioned proximate the injector for detecting a concentration of a pollutant in the exhaust gas flow downstream of the first AT device. The AT system furthermore includes a deflector arranged between the injector and the sensor and configured to guide the flow of exhaust gas to the sensor to thereby concentrate the flow of exhaust gas at the sensor and direct the reductant spray away from the sensor to thereby minimize detection of the reductant by the sensor.

公开(公告)号：US10428712B2

公开(公告)日：2019-10-01

申请号：US15683930

申请日：2017-08-23

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Claudio Ciaravino ,  Andrea Arnone

IPC: F01N3/28 ,  F01N3/035 ,  F01N3/08 ,  F01N3/10 ,  F01N3/20 ,  B01D53/94

Abstract: An exhaust gas flow after-treatment (AT) system includes first AT device and a second AT device in fluid communication with and positioned in the flow of exhaust gas downstream of the first AT device. The AT system also includes an exhaust passage for carrying the flow of exhaust gas from the first AT device to the second AT device and an injector for introducing a reductant into the exhaust passage. The AT system additionally includes a variable-position mixer arranged within the exhaust passage downstream of the injector. Furthermore, the AT system includes a mechanism configured to regulate the variable-position mixer between and inclusive of a first mixer position configured to increase a swirling motion and turbulence in the exhaust gas flow within the exhaust passage to thereby mix the reductant with the exhaust gas flow, and a second mixer position configured to reduce a backpressure generated by the mixer.

公开(公告)号：US10329990B2

公开(公告)日：2019-06-25

申请号：US15668754

申请日：2017-08-04

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： Ivan Flaminio Cozza ,  Claudio Ciaravino ,  Andrea Arnone

IPC: F01N13/08 ,  F01N13/00 ,  F01N3/035 ,  F01N3/08 ,  F01N3/20 ,  F01N3/28 ,  B01D53/94

Abstract: An exhaust gas flow after-treatment (AT) system includes first and second AT devices. The first AT device includes cone with an inlet defined by a surface area having a first geometric center and an outlet defined by a surface area having a second geometric center. The AT system also includes an exhaust passage for carrying the exhaust gas flow from the first AT device cone outlet to the second AT device, and includes an injector for introducing a reductant into the exhaust gas flow within the exhaust passage. The first geometric center is arranged at a predetermined distance from the second geometric center and the inlet surface area is greater than the outlet surface area by a predetermined ratio. The predetermined distance and the predetermined ratio are together configured to induce swirl in and mix the reductant with the exhaust gas flow within the exhaust passage.