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US 2003/0232231 A1Published application
Device and method for supplying air to a fuel cell
AssigneeDaimlerChrysler AG
InventorsManfred Stute, Siegfried Sumser
Life of this patent
Estimating the term…
Abstract
A device for supplying air to a fuel cell includes a compression machine connected at the intake air side of the fuel cell and an expansion machine connected at the exhaust air side of the fuel cell. The expansion machine is disposed on a common shaft with the compression machine. A motor-driven compression machine is connected downstream from the expansion machine on the exhaust air side.
Claims20
A device for supplying air to a fuel cell, comprising:
- a compression machine connected at an intake air side of the fuel cell;
- an expansion machine connected at an exhaust air side of the fuel cell, the expansion machine being disposed on a common shaft with the compression machine;
- and
- a motor-driven compression machine connected downstream from the expansion machine on the exhaust air side.
1 more element
A method of supplying air to a fuel cell, comprising:
- compressing the air using a compression machine, the compression machine including a flow compressor connected at an intake air side of the fuel cell and being disposed on a common shaft with an expansion turbine, the expansion turbine being connected at an exhaust air side of the fuel cell and including a variable turbine guide vane grid;
- and
- controlling the rotational speed of the compression machine using the variable turbine guide vane grid and a motor-driven compression machine connected downstream from the expansion turbine so as to control the supplying of the air.
Dependencies are inferred from the claim text.