-
Patent Agency Ranking
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
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：US09835064B2
公开(公告)日：2017-12-05
申请号：US15085301
申请日：2016-03-30
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Stefano Cassani , Paolo Francesco Carminati , Nicola Pio Sacco
CPC classification number: F01N3/023 , F01N3/103 , F01N3/106 , F01N11/002 , F01N13/009 , F01N2430/085 , F01N2550/02 , F01N2560/06 , F01N2560/14 , F01N2610/03 , F01N2900/1404 , Y02T10/47
Abstract: An aftertreatment system for an internal combustion system includes an exhaust duct, an oxidation catalyst disposed in the exhaust duct and a particulate filter disposed in the exhaust duct downstream of the oxidation catalyst. The internal combustion engine is operated to perform a regeneration process of the particulate filter. A first value of exhaust gas temperature in the exhaust duct between the oxidation catalyst and the particulate filter is determined. A second value of exhaust gas temperature in the exhaust duct downstream of the particulate filter is determined. A malfunctioning of the oxidation catalyst is determined when the first value of exhaust gas temperature is below a first predetermined threshold value thereof and contemporaneously the second value of exhaust gas temperature is above a second predetermined threshold value thereof during the regeneration process.
-
公开(公告)号：US09352280B2
公开(公告)日：2016-05-31
申请号：US14163120
申请日：2014-01-24
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Min Sun , Michelangelo Ardanese , Stefano Cassani , Andrea Dutto
CPC classification number: B01D53/9495 , B01D53/9459 , F01N3/0814 , F01N3/2006 , F01N3/208 , F01N9/002 , F01N9/005 , F01N2610/03 , F01N2900/0601 , F01N2900/1402 , F01N2900/1618 , F01N2900/1621 , F01N2900/1622 , Y02T10/47
Abstract: A method of estimating hydrocarbon storage in a catalytic device of an exhaust gas treatment system includes calculating an amount of hydrocarbons absorbed in the catalytic device per unit volume of exhaust gas over a period of time, calculating an amount of hydrocarbons desorbed in the catalytic device per unit volume of exhaust gas over the period of time, and calculating an amount of hydrocarbons oxidized in the catalytic device per unit volume of exhaust gas over the period of time. The amount of hydrocarbons oxidized in the catalytic device and the amount of hydrocarbons desorbed in the catalytic device are subtracted from the amount of hydrocarbons absorbed in the catalytic device to determine the amount of hydrocarbons stored in the catalytic device.
Abstract translation: 一种估计废气处理系统的催化装置中的烃储存的方法包括计算在一段时间内每单位体积废气中催化装置中吸收的烃的量，计算每个催化装置中解吸的烃的量 在一段时间内排气的单位体积，并计算在一段时间内每单位体积排气中的催化装置中氧化的烃的量。 在催化装置中氧化的烃的量和在催化装置中解吸的烃的量从在催化装置中吸收的烃的量减去以确定存储在催化装置中的烃的量。
-
公开(公告)号：US10138783B2
公开(公告)日：2018-11-27
申请号：US15236537
申请日：2016-08-15
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Michele Bilancia , Giorgio Sticchi , Luis Daniel Guerrero Cruz , Stefano Cassani
Abstract: A computer program, system and method are provided for thermally regulating an injector injecting a reducing agent into an exhaust pipe of an internal combustion engine. A pump is activated to deliver a coolant in a coolant circuit having a portion in heat exchange relation with the injector. A value is determined for a mass flow rate of the coolant delivered by the pump. A value is calculated for a temperature of the injector as a function of the determined value of the mass flow rate. A difference is calculated between the calculated value of the injector temperature and a predetermined set-point value thereof, and the mass flow rate of the coolant delivered by the pump is adjusted on the basis of the calculated difference.
-
公开(公告)号：US20150209729A1
公开(公告)日：2015-07-30
申请号：US14163120
申请日：2014-01-24
Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Inventor： Min Sun , Michelangelo Ardanese , Stefano Cassani , Andrea Dutto
IPC: B01D53/94
CPC classification number: B01D53/9495 , B01D53/9459 , F01N3/0814 , F01N3/2006 , F01N3/208 , F01N9/002 , F01N9/005 , F01N2610/03 , F01N2900/0601 , F01N2900/1402 , F01N2900/1618 , F01N2900/1621 , F01N2900/1622 , Y02T10/47
Abstract: A method of estimating hydrocarbon storage in a catalytic device of an exhaust gas treatment system includes calculating an amount of hydrocarbons absorbed in the catalytic device per unit volume of exhaust gas over a period of time, calculating an amount of hydrocarbons desorbed in the catalytic device per unit volume of exhaust gas over the period of time, and calculating an amount of hydrocarbons oxidized in the catalytic device per unit volume of exhaust gas over the period of time. The amount of hydrocarbons oxidized in the catalytic device and the amount of hydrocarbons desorbed in the catalytic device are subtracted from the amount of hydrocarbons absorbed in the catalytic device to determine the amount of hydrocarbons stored in the catalytic device.
Abstract translation: 一种估计废气处理系统的催化装置中的烃储存的方法包括计算在一段时间内每单位体积废气中催化装置中吸收的烃的量，计算每个催化装置中解吸的烃的量 在一段时间内排气的单位体积，并计算在一段时间内每单位体积排气中的催化装置中氧化的烃的量。 在催化装置中氧化的烃的量和在催化装置中解吸的烃的量从在催化装置中吸收的烃的量减去以确定存储在催化装置中的烃的量。
-
-
-
-
Search Results
5
records
(took 0.013 seconds)
