公开(公告)号：US20160238508A1

公开(公告)日：2016-08-18

申请号：US15041357

申请日：2016-02-11

Applicant: DELPHI INTERNATIONAL OPERATIONS LUXEMBOURG S.A.R.L

Inventor： PHILIPPE BOVI

IPC: G01N15/06 ,  G01M15/10 ,  F01N11/00

CPC classification number: G01N15/0656 ,  F01N3/021 ,  F01N9/002 ,  F01N9/005 ,  F01N11/00 ,  F01N2550/04 ,  F01N2560/05 ,  F01N2560/14 ,  F01N2560/20 ,  F01N2900/0416 ,  F01N2900/0418 ,  F01N2900/0601 ,  F01N2900/1606 ,  G01M15/102 ,  G01N2015/0046 ,  Y02T10/20 ,  Y02T10/47

Abstract: A diagnostic method for a particulate filter in an exhaust line of an internal combustion engine is presented. The exhaust gas stream downstream of the particulate filter is monitored by a downstream soot sensor having a characteristic sensor cycle; and the accumulation of soot at an upstream soot sensor is monitored over a respective sensor cycle of the downstream soot sensor. The particulate filter operating status is decided on the basis of the information of the downstream and upstream soot sensors. The amount of accumulated soot is determined based on the sensor cycles of the upstream soot sensor, and may be expressed as a soot loading level or as a number of sensor cycles. The efficiency of the particulate filter may be determined from the respective number of sensor cycles of the soot sensors.

Abstract translation: 介绍了一种内燃机排气管路中微粒过滤器的诊断方法。 微粒过滤器下游的废气流由具有特征传感器循环的下游烟灰传感器监测; 并且在下游烟灰传感器的相应传感器周期监测在上游烟灰传感器处的烟灰的积聚。 颗粒过滤器的运行状态是根据下游和上游烟灰传感器的信息决定的。 累积烟灰的量基于上游烟灰传感器的传感器周期来确定，并且可以表示为烟灰负载水平或多个传感器循环。 微粒过滤器的效率可以由烟炱传感器的传感器循环次数确定。