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US 7,404,748 B2Granted
Exhaust system
AssigneeHeinrich Gillet GmbH
InventorsAndreas Steigert, Joerg Tillmann, Thomas Weidner
Life of this patent
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Abstract
An exhaust system is disclosed that has pipes and a housing, through which exhaust fumes of an internal combustion engine flow. The exhaust fumes generate a condensate, at least in part and/or in certain areas. To prevent the corrosion of sheet metal by the condensate, a sacrificial anode, which can be made of zinc and/or magnesium, is provided at least in one of the areas where the condensate collects.
Claims9
An exhaust system comprising:
- at least one pipe;
- a housing substantially enclosing the at least one pipe, the housing facilitating flow of exhaust fumes of an internal combustion engine therethrough and being partially made of sheet metal;
- and
- a sacrificial anode that is made of zinc and/or magnesium and is provided in at least an area where condensate, which is formed from exhaust fumes, collects to inhibit corrosion of the sheet metal,
- wherein an interior side of the pipe or the housing, which is exposed to the condensate, is provided with an electro-insulating corrosion-preventive coating.
2 more elements
An exhaust system comprising:
- at least one pipe;
- a housing substantially enclosing the at least one pipe, the housing facilitating flow of exhaust fumes of an internal combustion engine therethrough and being partially made of sheet metal;
- and
- a sacrificial anode that is made of zinc and/or magnesium and is provided in at least an area where condensate, which is formed from exhaust fumes, collects to inhibit corrosion of the sheet metal,
- wherein the sacrificial anode is a threaded bolt and is screwed into the pipe or the housing, and
- wherein a threaded bushing is inserted in the pipe or the housing for receiving the threaded bolt.
3 more elements
Dependencies are inferred from the claim text.