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US 2009/0155641 A1Published application
Multiple injector and ejector array
AssigneeGM Global Technology Operations LLC
InventorsRalph Senner, Benno Andreas-Schott
Life of this patent
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Abstract
A fluid injection/ejection system for a fuel cell stack is disclosed, wherein the system includes an array of injectors and ejectors that support hydrogen recirculation and maximize a use of the hydrogen and an efficiency of the fuel cell stack.
Claims20
A fluid injection/ejection system comprising:
- a first injector adapted to receive a first stream of a first fluid from a source of fluid and inject the first stream of the first fluid into a first chamber;
- a first ejector having a passage formed therein, the passage having an inlet in fluid communication with the first chamber and an outlet in fluid communication with a second chamber;
- a second injector adapted to receive a second stream of the first fluid from the source of fluid and inject the second stream of the first fluid into the second chamber;
- and
- a second ejector including a passage formed therein, the passage having an inlet and an outlet, wherein the inlet is in fluid communication with the second chamber.
2 more elements
A fluid injection/ejection system for a fuel cell system comprising:
- a first injector having an inlet and an outlet formed therein, wherein the inlet is in fluid communication with a source of fluid and the outlet is in fluid communication with a first chamber;
- a first ejector including a check valve and a venturi passage formed therein, the venturi passage having an inlet in fluid communication with the first chamber and an outlet in fluid communication with a second chamber;
- a second injector having an inlet and an outlet formed therein, wherein the inlet is in fluid communication with the source of fluid and the outlet is in fluid communication with the second chamber;
- and
- a second ejector including a venturi passage formed therein, the venturi passage having an inlet in fluid communication with the second chamber and an outlet in fluid communication with a third chamber, the third chamber having an outlet in fluid communication with a fuel cell, wherein at least one of the first chamber and the second chamber includes a fuel recirculation inlet formed therein adapted to receive a second fluid therein in response to a flow of the first fluid through the venturi passage of at least one of the first ejector and the second ejector, the second fluid combining with the first fluid to form a fluid mixture.
2 more elements
A fluid injection/ejection system for a fuel cell system comprising:
- a small scale injector having an inlet and an outlet formed therein, wherein the inlet is in fluid communication with a source of fluid and the outlet is in fluid communication with a first chamber;
- a first ejector including a check valve and a venturi passage formed therein, the venturi passage having an inlet in fluid communication with the first chamber and an outlet in fluid communication with a second chamber;
- a full scale injector having an inlet and an outlet formed therein, wherein the inlet is in fluid communication with the source of fluid and the outlet is in fluid communication with the second chamber;
- and
- a second ejector including a venturi passage formed therein, the venturi passage having an inlet in fluid communication with the second chamber and an outlet in fluid communication with a third chamber, the third chamber having an outlet in fluid communication with a fuel cell, wherein at least one of the first chamber and the second chamber includes a fuel recirculation inlet formed therein adapted to receive a second fluid therein in response to a flow of the first fluid through the venturi passage of at least one of the first ejector and the second ejector, the second fluid combining with the first fluid to form a fluid mixture.
2 more elements
Dependencies are inferred from the claim text.