Methods for intentional turbo surging for enhanced system control and protections
First Claim
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1. A method, comprising:
- updating a stored estimate of a surge level of a compressor in an engine system of a vehicle responsive to detection of a surge event; and
inducing the surge event by adjusting a first operating parameter during a first condition, and inducing the surge event by adjusting a second operating parameter during a second condition.
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Abstract
Various methods and systems are provided for determining a surge level of a compressor. In one embodiment, a method for an engine comprises updating a stored estimate of a surge level of a compressor responsive to detection of a surge event.
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Citations
19 Claims
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1. A method, comprising:
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updating a stored estimate of a surge level of a compressor in an engine system of a vehicle responsive to detection of a surge event; and inducing the surge event by adjusting a first operating parameter during a first condition, and inducing the surge event by adjusting a second operating parameter during a second condition. - View Dependent Claims (2, 3, 4, 5, 6, 8)
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7. A method, comprising:
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updating a stored estimate of a surge level of a compressor in an engine system of a vehicle responsive to detection of a surge event; and inducing the surge event in response to degradation of an exhaust gas recirculation valve.
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9. A method, comprising:
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determining a surge level of a compressor in an engine system of a vehicle in response to a compressor surge event; updating a stored surge level with the determined surge level; and inducing the compressor surge event after a designated duration of service of the vehicle. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A method, comprising:
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determining a surge level of a compressor in an engine system of a vehicle in response to a compressor surge event; updating a stored surge level with the determined surge level; and inducing the compressor surge event by decreasing engine cooling and maintaining engine speed in response to degradation of an exhaust gas recirculation valve.
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16. A method, comprising:
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determining a measured surge level based on one or more compressor surge events of an engine system over time; when a difference between a measured surge level and a modeled surge level is greater than a threshold difference, indicating an external event and updating the modeled surge level with the measured surge level; and inducing the one or more compressor surge events by decreasing engine speed when an exhaust gas recirculation valve is determined as not degraded and inducing the one or more compressor surge events by decreasing engine cooling when the exhaust gas recirculation valve is determined as degraded. - View Dependent Claims (17, 18)
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19. A method, comprising:
inducing a compressor surge event by decreasing engine cooling while maintaining engine speed in response to determining degradation of an exhaust gas recirculation valve in an engine system.
Specification