Patent ID: 6060699
Filing Date: 2000-05-09
Classification: F01N,H05B,Y02T

Abstract:
An electrode structure for connecting an external electric wire to an electrically heated catalyst located in an exhaust pipe, the electrically heated catalyst being heated to a high temperature, the electrode structure comprising:a high temperature side electrode including a first conductor formed of a first material, wherein a first end of the high temperature side electrode is connected to the heated catalyst; anda low temperature side electrode located outside of the exhaust pipe, a first end of the low temperature side electrode being connected to a second end of the high temperature side electrode and a second end of the low temperature side electrode being connected to the external electric wire, and wherein the low temperature side electrode includes a second conductor formed of a second material, the second conductor being surrounded by an insulating material received within a covering material, the second material having a smaller electrical conduction resistance than the first material.