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.