公开(公告)号：US20210156816A1

公开(公告)日：2021-05-27

申请号：US16696417

申请日：2019-11-26

Applicant: DELPHI TECHNOLOGIES IP LIMITED

Inventor： CHARLES S. NELSON ,  GOPINATH PENAMALLI

IPC: G01N27/407 ,  F01N13/00

Abstract: A particulate matter sensor includes a shield through which exhaust gases flow in a direction of flow from upstream to downstream. A sensing element with a positive electrode and a negative electrode separated from the positive electrode by an electrode gap is located within the shield. The positive electrode includes a plurality of positive electrode branches each having positive electrode extensions extending downstream and separated from each other by positive electrode slots. A positive electrode extension tip for each has a positive electrode extension tip width. The negative electrode includes negative electrode branches each having negative electrode extensions extending upstream which are each flanked on each side thereof by a plurality of negative electrode slots. A negative electrode extension tip for each has a negative electrode extension tip width. A sum of the positive electrode extension tip widths is greater than a sum of the negative electrode extension tip widths.