Connection unit
AssigneePurem GmbH
InventorHolger Brenner
Life of this patent
Estimating the term…
Abstract
A connection unit connects an electrical supply line to an exhaust-gas heater of an exhaust system. The connection unit includes a connection element having an electrically conductive connection-element body. The connection element has an exhaust-gas heater connection region in a first axial end region and has a supply-line connection region in a second axial end region. The supply-line connection region includes an end portion of the connection-element body and a radial projection adjoining the end portion. A carrier element fixes the connection unit to an exhaust-system component. The carrier element has a carrier-element opening wherethrough the connection-element body passes. A support unit axially and radially supports the connection element on the carrier element.
Claims19
A connection unit for connecting an electrical supply line to an exhaust-gas heater of an exhaust system of an internal combustion engine, the exhaust system having an exhaust-system component, the connection unit comprising:
- a connection element having an electrically conductive connection-element body defining a longitudinal axis (L) and said electrically conductive connection-element body being elongated along said longitudinal axis (L);
- said connection element having first and second axial end regions;
- said connection element having an exhaust-gas heater connection region in said first axial end region and having a supply-line connection region in said second axial end region;
- said supply-line connection region including an end portion of said connection-element body and a radial projection of said connection-element body adjoining said end portion, said radial projection forming an integral constituent part of said connection-element body;
- a carrier element for fixing said connection unit to the exhaust-system component;
- said carrier element defining a carrier-element opening wherethrough said connection-element body passes at a radial distance from said carrier element;
- a support unit for axially and radially supporting said connection element on said carrier element;
- said support unit including a first support element of electrically insulating material supported on said carrier element in a first axial direction (R1) and radially outwardly and supported with respect to said radial projection forming an integral constituent part of said connection-element body in a second axial direction (R2) opposite to said first axial direction (R1);
- and,
- said support unit further including a second support element of electrically insulating material supported on said carrier element in said second axial direction (R2) and radially outwardly.
An exhaust system for an internal combustion engine, the exhaust system comprising:
- an exhaust-system component that carries exhaust gas;
- at least one exhaust-gas heater arranged in the exhaust-system component;
- at least one exhaust-gas treatment unit downstream of said at least one exhaust-gas heater;
- and,
- at least one connection unit being fixed to said exhaust-system component in association with said at least one exhaust-gas heater;
- and, said connection unit including:
- a connection element having an electrically conductive connection-element body defining a longitudinal axis (L) and said electrically conductive connection-element body being elongated along said longitudinal axis (L);
- said connection element having first and second axial end regions;
- said connection element having an exhaust-gas heater connection region in said first axial end region and having a supply-line connection region in said second axial end region;
- said supply-line connection region including an end portion of said connection-element body and a radial projection of said connection-element body adjoining said end portion, said radial projection forming an integral constituent part of said connection-element body;
- a carrier element for fixing said connection unit to said exhaust-system component;
- said carrier element defining a carrier-element opening wherethrough said connection-element body passes at a radial distance from said carrier element;
- a support unit for axially and radially supporting said connection element on said carrier element;
- said support unit including a first support element of electrically insulating material supported on said carrier element in a first axial direction (R1) and radially outwardly and supported with respect to said radial projection forming an integral constituent part of said connection-element body in a second axial direction (R2) opposite to said first axial direction (R1);
- and,
- said support unit further including a second support element of electrically insulating material supported on said carrier element in said second axial direction (R2) and radially outwardly.
Dependencies are inferred from the claim text.