公开(公告)号：US11118491B1

公开(公告)日：2021-09-14

申请号：US17060241

申请日：2020-10-01

Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

Inventor： William D. Gough ,  Michael A. Smith ,  Vijay A. Ramappan ,  Timothy Wendling

IPC: F01N3/02 ,  F01N9/00 ,  F02M26/09 ,  F02D41/00 ,  F02D41/02 ,  F01N3/023

Abstract: A regeneration system for a vehicle includes: a particulate module configured to determine an amount of particulate trapped within a particulate filter, the particulate filter configured to filter particulate from exhaust output from an engine; and a regeneration control module configured to, in response to a determination that the amount of particulate trapped within the particulate filter is at least a predetermined amount: close a wastegate of a turbocharger; and open an EGR valve connected (a) to an intake system of the engine downstream of the turbocharger and (b) to upstream of the particulate filter, the closing of the wastegate and the opening of the EGR valve flowing air from (a) the intake system to (b) upstream of the particulate filter through the EGR valve without the air entering the engine.

公开(公告)号：US10352223B2

公开(公告)日：2019-07-16

申请号：US15698093

申请日：2017-09-07

Applicant: GM Global Technology Operations LLC

Inventor： Gregory J. York ,  Vijay A. Ramappan ,  Zhijian J. Wu

IPC: F01N3/20 ,  F01N9/00 ,  F01N11/00

Abstract: A method for cold start emissions diagnostic of a catalytic treatment device of an internal combustion engine includes determining a torque reserve; determining a catalyst light off (CLO) state; integrating the total torque reserve over a time period established by the CLO state; determining if a value from the integration exceeds an integration threshold; and if the value from the integration exceeds the integration threshold, indicating that the cold start emissions diagnostic is positive.

公开(公告)号：US20190072019A1

公开(公告)日：2019-03-07

申请号：US15698093

申请日：2017-09-07

Applicant: GM Global Technology Operations LLC

Inventor： Gregory J. York ,  Vijay A. Ramappan ,  Zhijian J. Wu

IPC: F01N9/00 ,  F01N11/00 ,  F01N3/20

CPC classification number: F01N9/005 ,  F01N3/10 ,  F01N3/2006 ,  F01N9/00 ,  F01N11/00 ,  F01N2550/02 ,  F01N2900/0418 ,  F01N2900/08 ,  F01N2900/1602 ,  F01N2900/1626 ,  F02D41/00

Abstract: A method for cold start emissions diagnostic of a catalytic treatment device of an internal combustion engine includes determining a torque reserve; determining a catalyst light off (CLO) state; integrating the total torque reserve over a time period established by the CLO state; determining if a value from the integration exceeds an integration threshold; and if the value from the integration exceeds the integration threshold, indicating that the cold start emissions diagnostic is positive.