Exhaust train having an integrated thermoelectric generator
AssigneesBASF SE, Friedrich Boysen GmbH & Co. KG
InventorsJuergen Moors, Martin Gaertner, Georg Degen, Henry Bosch, Roland Gauss, Karl Stockinger
Life of this patent
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Abstract
In an exhaust train for an internal combustion engine having an integrated thermoelectric generator, the exhaust train has at least one duct, through which exhaust gas flows and in which at least one thermoelectric module is arranged in such a way that the hot side of the thermoelectric module is in direct contact with the exhaust gas, while the cold side of the thermoelectric module is cooled by means of a heat transfer medium.
Claims12
An exhaust train for an internal combustion engine, comprising:
- an integrated thermoelectric generator comprising at least one thermoelectric module comprising
- p- and n-legs, which are connected electrically in series and thermally in parallel, and comprise contacts that rest against support plates on the hot and cold side of the at least one thermoelectric module, and
- only one duct, through which exhaust gas flows and in which the at least one thermoelectric module is arranged so that a hot side of the at least one thermoelectric module is in direct contact with the exhaust gas, while a cold side of the at least one thermoelectric module is cooled by a heat transfer medium,
- wherein the at least one thermoelectric module is incorporated gastightly into the duct on the cold side of the at least one thermoelectric module,
- wherein the duct comprises a rectangular or a trapezoidal cross section with flat side walls,
- wherein the integrated thermoelectric generator is integrated into one or more of the flat side walls,
- wherein the at least one thermoelectric module is provided with a protective layer against excessive temperatures thereon, and
- wherein the protective layer comprises one or more metal alloys that form double, triple, quadruple or quintuple eutectics and having a melting point in a range of from 200° C. to 1800° C.
An exhaust train for an internal combustion engine, comprising:
- an integrated thermoelectric generator comprising at least one thermoelectric module comprising
- p- and n-legs, which are connected electrically in series and thermally in parallel, and comprise contacts that rest against support plates on the hot and cold side of the at least one thermoelectric module, and
- a duct, through which exhaust gas flows and in which the at least one thermoelectric module is arranged so that a hot side of the at least one thermoelectric module is in direct contact with the exhaust gas, while a cold side of the at least one thermoelectric module is cooled by a heat transfer medium,
- wherein the at least one thermoelectric module is incorporated gastightly into the duct on the cold side of the at least one thermoelectric module,
- wherein the duct comprises a rectangular or a trapezoidal cross section with flat side walls,
- wherein the integrated thermoelectric generator is integrated into one or more of the flat side wall,
- wherein the at least one thermoelectric module is provided with a protective layer against excessive temperatures thereon, and
- wherein the protective layer comprises one or more metal alloys that form double, triple, quadruple or quintuple eutectics and having a melting point in a range of from 200° C. to 1800° C.
Dependencies are inferred from the claim text.