Back to results
US 2012/0237365 A1Published application
Method and system for operating an ejector
AssigneeFord Global Technologies, LLC
InventorsJoseph Norman Ulrey, Ross Dykstra Pursifull
Life of this patent
Estimating the term…
Abstract
A selectively operable vacuum source is disclosed. In one example, vacuum source supplies as much air to an engine as is drawn by the vacuum source from a vacuum reservoir. The approach may provide vacuum to a vehicle vacuum system efficiently and with less weight than other vacuum sources.
Claims20
A system for providing vacuum for a vehicle, comprising:
- an ejector;
- an ejector pump configured to pump only air drawn through a low pressure region of the ejector;
- and
- an air conduit, the air conduit housing the ejector and at least a portion of the ejector pump, the air conduit having a sole air inlet and a sole air outlet.
1 more element
A system for providing vacuum for a vehicle, comprising:
- an ejector or a venturi;
- an ejector pump or a venturi pump;
- an air conduit, the air conduit housing the ejector or the venturi and at least a portion of the ejector pump, the air conduit having a sole air inlet and a sole air outlet;
- and
- an engine configured to accept air output from the sole air outlet in an intake air passage.
2 more elements
A method for providing vacuum, comprising:
- drawing an amount of air from a vacuum reservoir via a low pressure region of an ejector or venturi into an air conduit having a sole air inlet and a sole air outlet;
- providing at least a portion of the amount of air from the vacuum reservoir to a converting nozzle of the ejector or venturi;
- and
- providing an amount of air to an engine via the sole air outlet, the amount of air provided to the engine substantially equivalent to the amount of air drawn from the vacuum reservoir.
1 more element
Dependencies are inferred from the claim text.