An electrical fluid heater, in particular water heater, preferably for a motor vehicle, including at least one fluid accommodating container and at least one heating conductor having a conductive polymer structure, for heating fluid, in particular water, accommodated in the fluid accommodating container.

A heating element for heating a component for exhaust gas aftertreatment using ohmic resistance includes: an unheated end region; an intermediate region; and a heated end region. The unheated end region and the heated end region are separated by the intermediate region, and the intermediate region consists of a thermally insulating material configured to minimize heat flow from the heated end region to the unheated end region.

An electrical connection for an electrical component in an exhaust gas system. The exhaust gas system has a metal casing through which an electrical conductor is routed. The connection has the conductor, an electrical insulation surrounding the conductor, and a metal bushing surrounding the insulation and the conductor, all together extend along a center axis. The insulation extends along the center axis beyond the bushing by an insulation gap of at least 2 mm at least at a first end of the connection.

A heater element for vehicle compartment heating in a vehicle, including a pillar-shaped honeycomb structure portion having: an outer peripheral side wall; and partition walls disposed inside the outer peripheral side wall, the partition walls defining a plurality of cells which form flow paths from a first end face to a second end face;
wherein the partition walls have PTC characteristics; an average thickness of the partition walls is 0.13 mm or less; and an open frontal area on the first and second end faces is 0.81 or more.

An electrical heater and method for heating a catalyst. The heater includes a honeycomb body having intersecting walls forming channels extending along a longitudinal axis. A plurality of electrically resistive paths are included, each including at least a portion of the plurality of intersecting walls and extending a length across the honeycomb body transverse to the longitudinal axis. A positive electrode and a negative electrode are in electrical communication with each other via the resistive paths. The positive electrode and the negative electrode are operatively positioned to generate a respective flow of current through each resistive path. The lengths of at least two of the resistive paths differ from each other. The resistive paths are configured with respect to the at least one positive electrode and the at least one negative electrode such that the current in each of the resistive paths is substantially equal.

A honeycomb structure including: a pillar-shaped honeycomb structure portion having an outer peripheral wall and partition walls disposed on an inner side of the outer peripheral wall and defining a plurality of cells extending from one end face to another end face to form flow paths; and at least an electrode portion disposed on an outer surface of the outer peripheral wall of the pillar-shaped honeycomb structure portion, wherein the pillar-shaped honeycomb structure portion is formed of ceramics containing either or both of Si and SiC, the electrode portion contains either or both of a metal and a metal compound in addition to an oxide, and a volume ratio of the oxide on an inner peripheral side of the electrode portion is higher than a volume ratio of the oxide on an outer peripheral side of the electrode portion.

Method for manufacturing an electrically operable heating body for an inhaler, wherein a semiconductor material is provided so as to be substantially planar, and a plurality of channels are incorporated into the semiconductor material substantially in the direction of the surface normal of the planar semiconductor material, such that a fluid can pass through the semiconductor material in the channels.

An electrical connection for an electrical component in an exhaust gas system. The exhaust gas system has a metal casing through which an electrical conductor is routed. The connection has the conductor, an electrical insulation surrounding the conductor, and a metal bushing surrounding the insulation and the conductor, all together extend along a center axis. The insulation extends along the center axis beyond the bushing by an insulation gap of at least 2 mm at least at a first end of the connection.

An electrical resistor includes borosilicate particles, Si-containing particles, and pore parts. The pore parts are constituted by gaps between the borosilicate particles and the Si-containing particles and surround the borosilicate particles and the Si-containing particles. A honeycomb structure includes the electrical resistor. An electric heating catalytic device has the honeycomb structure.

An electric heating type support includes: an electrically conductive honeycomb structure including a pillar shaped honeycomb structure portion composed of conductive ceramics, the pillar shaped honeycomb structure portion including: an outer peripheral wall; and porous partition walls disposed on an inner side of the outer peripheral wall, the porous partition walls defining a plurality of cells, each cell penetrating from one end face to other end face to form a flow path; and a pair of metal terminals disposed so as to face each other across a central axis of the pillar shaped honeycomb structure portion, each metal terminal being joined to a surface of the electrically conductive honeycomb structure via a welded portion so as to follow a surface shape of the electrically conductive honeycomb structure.