公开(公告)号：US20040107696A1

公开(公告)日：2004-06-10

申请号：US10633117

申请日：2003-08-01

Applicant: VISTEON GLOBAL TECHNOLOGIES, INC.

Inventor： Clive Harrison ,  Garon Nigel Heslop ,  Jon Dixon ,  Mark Paul Guerrier

IPC: F01N003/00

CPC classification number: F01N9/005 ,  F02D41/0295 ,  F02D41/1402 ,  F02D41/1439 ,  F02D41/1446 ,  F02D41/1454 ,  F02D41/1475 ,  F02D41/1479 ,  F02D41/2454 ,  F02D2041/1433 ,  F02D2200/0814 ,  Y02T10/47

Abstract: This invention relates to an apparatus for controlling the air-fuel ratio demanded by a fuel controller in order to maintain optimum performance of a catalytic converter. Provided is an open loop fuel controller comprising a detector arranged down stream of a catalyst for detecting rich breakthrough; a catalyst model having an estimator for estimating a stored oxygen level in the catalyst; a comparator for comparing an estimated stored oxygen level with a plurality of predetermined thresholds; demand adjusting means for adjusting an air fuel ratio demand in dependence upon a received signal from said comparator and upon a received signal from said detector. A method of open loop fuel control is also provided.

Abstract translation: 本发明涉及一种用于控制由燃料控制器要求的空燃比以便维持催化转化器的最佳性能的装置。 提供了一种开环燃料控制器，其包括设置在催化剂下游的检测器，用于检测丰富的突破; 催化剂模型，其具有用于估计催化剂中存储的氧气水平的估计器; 比较器，用于将估计存储的氧气水平与多个预定阈值进行比较; 需求调节装置，用于根据来自所述比较器的接收信号和来自所述检测器的接收信号来调整空燃比要求。 还提供了开环燃料控制的方法。