公开(公告)号：US10161276B2

公开(公告)日：2018-12-25

申请号：US15186836

申请日：2016-06-20

Applicant: GM Global Technology Operations LLC

Inventor： Yong Miao ,  Steven Felix ,  Kurt Alfred Wellenkotter

IPC: F01N3/20 ,  F01N11/00 ,  F02D41/02 ,  F01N9/00

Abstract: A method and system for non-uniform catalyst heating for reducing exhaust gas emissions when the catalyst is below a predetermined light off temperature is provided. The method includes providing a catalyst formed of a plurality of electrically conductive subsections and at least one catalyst heating device that is operable to heat at least one of the plurality of electrically conductive subsections of the catalyst to form at least one predetermined non-uniform heating pattern. A heater control module is provided for controlling the operation of the at least one catalyst heating device. If the engine is in a cold start condition, then the heater control module causes the at least one catalyst heating device to heat at least one of the electrically conductive subsections of the catalyst to obtain a first predetermined non-uniform heating pattern.

公开(公告)号：US20170362982A1

公开(公告)日：2017-12-21

申请号：US15186836

申请日：2016-06-20

Applicant: GM Global Technology Operations LLC

Inventor： Yong Miao ,  Steven Felix ,  Kurt Alfred Wellenkotter

IPC: F01N3/20 ,  F02D41/02 ,  F01N11/00

CPC classification number: F01N3/2026 ,  F01N9/00 ,  F01N11/002 ,  F01N2560/06 ,  F01N2900/12 ,  F01N2900/1602 ,  F01N2900/1626 ,  F02D41/0255 ,  Y02T10/26 ,  Y02T10/47

Abstract: A method and system for non-uniform catalyst heating for reducing exhaust gas emissions when the catalyst is below a predetermined light off temperature is provided. The method includes providing a catalyst formed of a plurality of electrically conductive subsections and at least one catalyst heating device that is operable to heat at least one of the plurality of electrically conductive subsections of the catalyst to form at least one predetermined non-uniform heating pattern. A heater control module is provided for controlling the operation of the at least one catalyst heating device. If the engine is in a cold start condition, then the heater control module causes the at least one catalyst heating device to heat at least one of the electrically conductive subsections of the catalyst to obtain a first predetermined non-uniform heating pattern.