公开(公告)号：US11692471B1

公开(公告)日：2023-07-04

申请号：US17661865

申请日：2022-05-03

申请人： Garrett Transportation I Inc.

发明人： Malay Maniar ,  Jens Keuler ,  Surya Yadla

IPC分类号： F01N3/20 ,  F01N3/32 ,  F01N9/00 ,  F01N3/22

CPC分类号： F01N3/2013 ,  F01N3/323 ,  F01N9/00 ,  F01N3/225 ,  F01N2610/085 ,  F01N2900/10 ,  F01N2900/1602

摘要： In an internal combustion engine system having an emissions control system including an electrically heated catalyst (E-cat) and an E-compressor (either standalone or part of an E-turbocharger), a method for operating the emissions control system includes predicting that a cold start of the engine is imminent, activating the E-cat and the E-compressor in response to the prediction, and monitoring a characteristic parameter Pe of the E-cat as it changes. The E-compressor speed Nc is regulated to change in proportion to the changing Pe while the E-cat is activated. If no engine start occurs, the E-cat is deactivated, and speed Nc is regulated to track the changing Pe.