公开(公告)号：US10001073B2

公开(公告)日：2018-06-19

申请号：US15164142

申请日：2016-05-25

Applicant: GM Global Technology Operations LLC

Inventor： J. Michael Gwidt ,  Robert E. Heger ,  Robert J. Genslak ,  Stephen P. Levijoki ,  Edward Stuteville

IPC: F02D41/02 ,  B60W20/16 ,  B60K6/24 ,  B60W10/06 ,  B60W10/08 ,  F01N3/20 ,  F01N11/00 ,  F02D41/26 ,  F02N11/08 ,  F02P5/04 ,  F02P5/15

CPC classification number: F02D41/0255 ,  B60K6/24 ,  B60K13/04 ,  B60W10/06 ,  B60W10/08 ,  B60W20/16 ,  B60W2540/10 ,  B60Y2200/92 ,  B60Y2300/474 ,  F01N3/2006 ,  F01N3/2033 ,  F01N9/00 ,  F01N11/002 ,  F01N2430/06 ,  F01N2550/02 ,  F01N2590/11 ,  F01N2900/08 ,  F01N2900/12 ,  F01N2900/1602 ,  F02D37/02 ,  F02D41/009 ,  F02D41/26 ,  F02D2200/0802 ,  F02N11/0814 ,  F02P5/045 ,  F02P5/1502 ,  F02P5/1506 ,  Y02A50/2322 ,  Y02T10/26 ,  Y02T10/46 ,  Y02T10/47 ,  Y02T10/48 ,  Y10S903/905

Abstract: A catalyst control system includes a stop and start module that, during a period that the vehicle is ON between (i) a first time when the vehicle is turned ON and (i) a second time when the vehicle is next turned OFF, selectively shuts down and starts a spark ignition engine of the vehicle. A catalyst light off (CLO) control module initiates a first CLO event for a first engine startup during the period and, when a temperature of a catalyst that receives exhaust output by the engine is less than a predetermined temperature, selectively initiates a second CLO event for a second engine startup during the period. A fuel control module richens fueling of the engine during the first and second CLO events of the period. A spark control module retards spark timing of the engine during the first and second CLO events of the period.