On-board fuel vapor separation for multi-fuel vehicle
AssigneeFord Global Technologies, LLC
InventorsRoss Dykstra Pursifull, Mark Allen Dearth
Life of this patent
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Abstract
A fuel delivery system for a fuel burning engine of a vehicle and a method of operating the fuel delivery system is provided. As one example, the method includes separating a first fuel and a second fuel from a fuel vapor on-board the vehicle, said fuel vapor including at least an alcohol component and a hydrocarbon component and said first fuel including a higher concentration of the alcohol component than the fuel vapor and the second fuel; condensing the separated first fuel from a vapor phase to a liquid phase; delivering the condensed liquid phase of the first fuel to the engine; and combusting at least the condensed liquid phase of the first fuel at the engine.
Claims5
An engine system for a vehicle, comprising:
- an internal combustion engine including at least one cylinder;
- an air intake passage communicating with the cylinder;
- an in-cylinder fuel injector configured to inject a first fuel directly into the cylinder;
- a second fuel injector configured to deliver a second fuel to the cylinder;
- a fuel system coupled with the in-cylinder fuel injector and the second fuel injector, said fuel system configured to receive a liquid fuel mixture including the first fuel and the second fuel, and at least partially separate a fuel vapor generated from the liquid fuel mixture into the first fuel and the second fuel so that the first fuel includes a greater concentration of an alcohol component than the second fuel;
- and
- a control system configured to vary an amount of the first fuel injected by the in-cylinder fuel injector relative to an amount of the second fuel delivered by the second fuel injector in response to an operating condition.
Dependencies are inferred from the claim text.