Patent ID: 9017615
Filing Date: 2015-04-28
Classification: B01D,F01N,Y02T

Abstract:
1. An electrically heated catalyst comprising: a heat generation element that is adapted to be electrically energized to generate heat; a case that contains said heat generation element therein; a mat that is arranged between said heat generation element and said case and serves to insulate electricity and at the same time to support said heat generation element; an electrode that is connected to said heat generation element from outside of said case; an insulation part that plugs a gap between said case and said electrode; an electrode chamber that is a space formed around said electrode at an inner side of said case and at an outer side of said heat generation element, and is formed by providing a gap between said electrode and said mat; and a circulation passage that is provided with two opening portions either at an upstream side or at a downstream side of said heat generation element, and is connected from one of said opening portions to the other of said opening portions while passing through around said electrode, the circulation passage not connecting between said two openings and said electrode chamber.