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US 9,790,849 B2Granted
Method and system to operate a compressor for an engine
AssigneeFord Global Technologies, LLC
InventorsBaitao Xiao, Hamid-Reza Ossareh, Adam Nathan Banker
Life of this patent
Estimating the term…
Abstract
Methods and systems for operating an engine that includes two compressors is disclosed. In one example, an electrically driven compressor is activated in response to conditions where a turbocharger compressor speed oscillates. The electrically driven compressor is activated to cancel engine air intake flow oscillations that may be caused by the turbocharger compressor.
Claims19
A method for operating engine compressors, comprising:
- receiving sensor data to a controller;
- activating a second compressor in an engine intake via the controller in response to a first compressor being within a threshold air flow of a surge condition based on the sensor data, where the second compressor is activated from a deactivated state;
- and
- adjusting a speed of the second compressor to provide a pressure at an output of the second compressor that is 180 degrees out of phase of a pressure at an output of the first compressor.
1 more element
A method for operating engine compressors, comprising:
- receiving sensor data to a controller;
- activating a second compressor in an engine intake via the controller in response to a first compressor being within a threshold air flow of a surge condition based on the sensor data, where the sensor data includes a pressure ratio across the first compressor;
- and
- adjusting a speed of the second compressor based on a position of a compressor bypass valve of the first compressor.
1 more element
A method for operating engine compressors, comprising:
- receiving sensor data to a controller;
- adjusting air flow through a second compressor in an engine intake via the controller in response to a first compressor being within a threshold air flow of a surge condition based on the sensor data;
- and
- closing a bypass valve of the second compressor in response to the first compressor being within a threshold air flow of the surge condition.
1 more element
An engine system, comprising:
- an engine including an air intake;
- an exhaust gas driven compressor positioned along the air intake and including a bypass valve;
- an electrically driven compressor posited along the air intake downstream of the exhaust gas driven compressor;
- and
- a controller including non-transitory instructions to open the bypass valve in response to a first indication of impending surge of the exhaust gas driven compressor and to activate the electrically driven compressor while the bypass valve is closed in response to a second indication of impending surge of the exhaust gas driven compressor.
2 more elements
Dependencies are inferred from the claim text.