公开(公告)号：US20170044951A1

公开(公告)日：2017-02-16

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

IPC: F01N3/20

CPC classification number: F01N3/2046 ,  F01N3/2066 ,  F01N9/00 ,  F01N2610/02 ,  F01N2610/11 ,  F01N2610/1453 ,  F01N2610/146 ,  F01N2900/1811 ,  F01N2900/1821 ,  Y02T10/24 ,  Y02T10/47

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.

Abstract translation: 提供了一种用于热调节将还原剂注入内燃机的排气管的喷射器的计算机程序，系统和方法。 激活泵以将冷却剂输送到具有与喷射器热交换的部分的冷却剂回路中。 确定由泵输送的冷却剂的质量流量的值。 根据质量流量的确定值，计算喷射器温度的值。 计算喷射器温度的计算值和其预定设定值之间的差异，并且基于计算出的差来调节由泵输送的冷却剂的质量流量。

公开(公告)号：US20160290196A1

公开(公告)日：2016-10-06

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

IPC: F01N3/023

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.

Abstract translation: 一种用于内燃系统的后处理系统包括排气管道，设置在排气管道中的氧化催化剂和设置在氧化催化剂下游的排气管道中的颗粒过滤器。 操作内燃机进行微粒过滤器的再生处理。 确定氧化催化剂和微粒过滤器之间排气管道中排气温度的第一值。 确定微粒过滤器下游排气管道中排气温度的第二值。 当废气温度的第一值低于其第一预定阈值并且在再生过程中同时第二废气温度值高于其第二预定阈值时，确定氧化催化剂的故障。

公开(公告)号：US20180347433A1

公开(公告)日：2018-12-06

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: F01N9/00 ,  F01N3/28 ,  F01N11/00 ,  F01N3/025 ,  F01N3/08

CPC classification number: F01N3/0842 ,  F01N3/0814 ,  F01N3/103 ,  F01N3/2066 ,  F01N9/00 ,  F01N13/009 ,  F01N13/017 ,  F01N2290/00 ,  F01N2390/00 ,  F01N2900/08 ,  F01N2900/1404 ,  F01N2900/1602

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.