Exhaust gas heating unit
AssigneePurem GmbH
InventorGerd Gaiser
Life of this patent
Estimating the term…
Abstract
The disclosure is directed to an exhaust gas heating unit for an exhaust gas system of an internal combustion engine. The exhaust gas heating unit includes at least one electrically conductive heating conductor element, wherein the at least one electrically conductive heating conductor element is configured from bent flat strip material. The exhaust gas system conducts exhaust gas defining an exhaust gas primary flow direction (H). The heating conductor element can have a plurality of broad sides arranged to be substantially parallel to the exhaust gas primary flow direction (H) and a plurality of end faces arranged substantially orthogonally to the exhaust gas primary flow direction (H).
Claims23
An exhaust gas heating unit for an exhaust gas system of an internal combustion engine, the exhaust gas heating unit comprising:
- at least one heating conductor element
- being electrically conductive and configured from bent flat strip material and being configured to have a wave-like structure defining a plurality of peak regions, said at least one heating conductor element defining a plurality of length segments running one adjacent the other;
- electrically insulating material disposed between said length segments running adjacent to one another for electrically insulating said length segments running adjacent to one another with respect to each other;
- a support structure including said electrically insulating material and supporting said at least one heating conductor element in a predetermined position, said support structure in association with each one of two adjacent length segments of said plurality of length segments running one adjacent the other including at least one of the following:
- at least one support element having a plurality of positioning projections engaging between each two mutually adjacent ones of said peak regions of said wave-like structure of said at least one heating conductor element;
- at least one support element having positioning recesses receiving corresponding ones of said peak regions of said wave-like structure of said at least one heating conductor element.
An exhaust gas system for an internal combustion engine, the exhaust gas system comprising:
- an exhaust gas heating unit including at least one heating conductor element
- being electrically conductive and configured from bent flat strip material and being configured to have a wave-like structure defining a plurality of peak regions, said at least one heating conductor element defining a plurality of length segments running one adjacent the other;
- electrically insulating material disposed between said length segments running adjacent to one another for electrically insulating said length segments running adjacent to one another with respect to each other;
- a support structure including said electrically insulating material and supporting said at least one heating conductor in a predetermined position, said support structure in association with each one of two adjacent length segments of said plurality of length
- segments running one adjacent the other including at least one of the following:
- at least one support element having a plurality of positioning projections engaging between each two mutually adjacent ones of said peak regions of said wave-like structure of said at least one heating conductor element;
- at least one support element having positioning recesses receiving corresponding ones of said peak regions of said wave-like structure of said at least one heating conductor element.
An exhaust gas heating unit for an exhaust gas system of an internal combustion engine, the exhaust gas heating unit comprising:
- a plurality of heating conductor elements, said heating conductor elements of said plurality of heating conductor elements being electrically conductive and configured from bent flat strip material such as to have a wave-like structure defining a plurality of peak regions, said heating conductor elements of said plurality of heating conductor elements being arranged so as to be electrically insulated with respect to one another;
- electrically insulating material disposed between said heating conductor elements of said plurality of heating conductor elements to electrically insulate said heating conductor elements of said plurality of heating conductor elements with respect to one another;
- a support structure including said electrically insulating material and supporting said heating conductor elements of said plurality of heating conductor elements in a predetermined position, said support structure in association with each one of two adjacent heating conductor elements of said plurality of heat conductor elements including at least one of the following:
- at least one support element having a plurality of positioning projections engaging between each two mutually adjacent ones of said peak regions of said wave-like structures of said adjacent heating conductor elements of said plurality of heat conductor elements;
- at least one support element having positioning recesses receiving corresponding ones of said peak regions of said wave-like structures of said adjacent heating conductor elements of said plurality of heating conductor elements.
Dependencies are inferred from the claim text.