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US 2026/0218639 A1Published application
Catalyst substrate heaters having improved heating profiles
AssigneeCorning Incorporated
InventorsThomas Adam Collins, David Robert Heine, Egor Kuznetsov, Mitchell Eugene Smith
Life of this patent
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Abstract
The present disclosure is directed to resistive heater bodies having a honeycomb structure and one or more current directing features, systems incorporating such resistive heater bodies. The honeycomb heater bodies and systems of the present disclosure find particular application in reducing cold-start emissions in gasoline- and diesel-powered engines. More specifically, the resistive heater bodies of the present disclosure provide current directing features enabling improved heating performance of downstream catalyst-containing substrates.
Claims20
A resistive heater body, comprising:
- a plurality of cell channels formed by intersecting cell walls, wherein the intersecting cell walls are formed from a heater body composition comprising an electrically conductive material;
- a plurality of slots extending into the resistive heater body from an outer periphery of the resistive heater body in alternating directions along a dimension of the resistive heater body, wherein the plurality of slots create a serpentine pattern for the plurality of cell channels from a first side of the resistive heater body to a second side of the resistive heater body;
- and
- one or more current directing features, each current directing feature being proximal to a terminal end of at least one of the plurality of slots, wherein each current directing feature comprises:
- (i) a first linear portion extending in a first direction perpendicular to a slot direction;
- (ii) a second linear portion extending in a second direction perpendicular to the slot direction;
- and (iii) a middle portion having one or more modified cell channels that connect the first and second linear portions.
4 more elements
A resistive heater body, comprising:
- a plurality of cell channels formed by intersecting cell walls, wherein the intersecting cell walls are formed from a heater body composition comprising an electrically conductive material;
- a plurality of slots extending into the resistive heater body from an outer periphery of the resistive heater body in alternating directions along a dimension of the resistive heater body, wherein the plurality of slots create a serpentine pattern for the plurality of cell channels from a first side of the resistive heater body to a second side of the resistive heater body;
- one or more current directing features, each current directing feature being proximal to a terminal end of at least one of the plurality of slots, wherein each current directing feature comprises a continuous length of modified cell walls corresponding to an array of partially-filled cell channels;
- wherein one or more slots of the plurality of slots have a corresponding terminal end that is spaced from an outer peripheral region of the resistive heater body by at most two cell channels.
1 more element
A fluid treatment system, the system comprising:
- a catalyst-containing substrate in fluid communication with a resistive heater body, the resistive heater body positioned upstream from the catalyst-containing substrate;
- wherein the resistive heater body comprises:
- a plurality of cell channels formed by intersecting cell walls, wherein the intersecting cell walls are formed from a heater body composition comprising an electrically conductive material;
- a plurality of slots extending into the resistive heater body from an outer periphery of the resistive heater body in alternating directions along a dimension of the resistive heater body, wherein the plurality of slots create a serpentine pattern for the plurality of cell channels from a first side of the resistive heater body to a second side of the resistive heater body;
- and
- one or more current directing features, each current directing feature being proximal to a terminal end of at least one of the plurality of slots, wherein each current directing feature comprises:
- (i) a first linear portion extending in a first direction perpendicular to a slot direction;
- (ii) a second linear portion extending in a second direction perpendicular to the slot direction;
- and (iii) a middle portion having one or more modified cell channels that connect the first and second linear portions.
6 more elements
Dependencies are inferred from the claim text.