Electrically heated catalyst device and its manufacturing method

摘要

An electrically heated catalyst device includes a catalyst support, a surface electrode disposed on an outer surface of the catalyst support and extending in an axis direction of the catalyst support, a wiring line member including a root section extending in the axis direction of the catalyst support and comb teeth-like wiring lines extending from the root section in a circumference direction of the catalyst support and fixed to the surface electrode, an outer cylinder covering an outer surface of the catalyst support, and a holding member holding the catalyst support and packed between the catalyst support and the outer cylinder, in which the catalyst support is heated by feeding a current through the surface electrode and the wiring line member. A slit extending from an outer edge in the circumferential direction of the catalyst support is formed in the root section of the wiring line member.

主权项

1. An electrically heated catalyst device comprising:
a catalyst support supporting a catalyst; a surface electrode disposed on an outer surface of the catalyst support, the surface electrode extending in an axis direction of the catalyst support; a wiring line member comprising a root section extending in the axis direction of the catalyst support and comb teeth-like wiring lines extending from the root section in a circumferential direction of the catalyst support, the root section not being fixed to the surface electrode and the comb teeth-like wiring lines being fixed to the surface electrode the root section and the comb teeth-like wiring lines being integrally formed; an outer cylinder covering the outer surface of the catalyst support; and a holding member holding the catalyst support, the holding member being packed between the catalyst support and the outer cylinder, wherein the catalyst support is heated by feeding a current through the surface electrode and the wiring line member, and a slit extending from an outer edge in the circumferential direction of the catalyst support is formed in the root section of the wiring line member.