公开(公告)号：US10408104B2

公开(公告)日：2019-09-10

申请号：US15945357

申请日：2018-04-04

Applicant: NGK Spark Plug Co., LTD.

Inventor： Takaya Yoshikawa ,  Takaaki Yamada ,  Yuki Saito

IPC: F01N3/20 ,  F01N3/28 ,  F01N13/00

Abstract: A catalyst apparatus is disposed in an exhaust passage for exhaust gas discharged from an internal combustion engine and includes a catalyst section for purifying the exhaust gas, and a heater section disposed upstream of the catalyst section in the exhaust passage and adapted to heat the exhaust gas. The heater section is configured such that a plurality of metal thin plates and insulators are stacked alternatingly are wound. The heater section contains a pair comprising a positive electrode and a negative electrode for energizing and heating the metal thin plates. The positive and negative electrodes are joined to each of the metal thin plates in such a manner that the positive electrode is located away from the negative electrode in a winding direction of the metal thin plates.