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US 2011/0209690 A1Published application
Method and System for Providing Air to an Engine
AssigneeFord Global Technologies, LLC
InventorsJoseph Norman Ulrey, Jeffrey Allen Doering, Ross Dykstra Pursifull, Donald J. Lewis
Life of this patent
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Abstract
Systems and methods for supplying air to an engine are disclosed. In one example, an air inlet throttle is at least partially closed in response to a change in engine torque request. In another example, the air inlet throttle is adjusted in conjunction with adjusting an engine throttle. The approach can reduce compressor noise and may reduce the possibility of compressor surge.
Claims20
An engine air supply system, comprising:
- a first throttle in an air duct;
- a compressor positioned downstream of the first throttle in the air duct;
- a second throttle positioned downstream of the compressor in the air duct and controlling air flow to engine cylinders;
- and
- a controller, the controller including instructions to at least partially close the first throttle during a surge condition of the compressor.
2 more elements
A method for supplying air to an engine, comprising:
- controlling air flow to a compressor via a first throttle;
- controlling air flow from the compressor to engine cylinders via a second throttle;
- and
- at least partially closing the first throttle during a condition of surge of the compressor.
1 more element
A method for supplying air to an engine, comprising:
- in response to a transition from a higher engine torque demand to a lower engine torque demand or a change in engine air intake system pressure:
- at least partially closing a first throttle of a engine air intake system to reduce a possibility of surge of a compressor, the first throttle controlling air flow to the compressor;
- and
- at least partially closing a second throttle of the engine air intake system to provide a desire amount of engine torque, the second throttle controlling air flow to cylinders of the engine.
1 more element
Dependencies are inferred from the claim text.