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US 2012/0247101 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.
Claims13
1-20. (canceled)
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;
- at least partially closing the first throttle during a condition of surge of the compressor;
- and
- adjusting a position of the first throttle in response to a desired EGR flow rate when the compressor is not in the condition of surge.
2 more elements
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;
- at least partially closing a second throttle of the engine air intake system to provide a desired amount of engine torque, the second throttle controlling air flow to cylinders of the engine;
- and
- opening a compressor bypass valve in response to the transition from the higher engine torque demand to the lower engine torque demand.
2 more elements
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;
- at least partially closing a second throttle of the engine air intake system to provide a desired amount of engine torque, the second throttle controlling air flow to cylinders of the engine;
- and
- adjusting a position of a turbocharger waste gate in response to the transition from the higher engine torque demand to the lower engine torque demand.
2 more elements
Dependencies are inferred from the claim text.