Methods and systems for indicating water at an oxygen sensor based on sensor heater power consumption
First Claim
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1. An engine method, comprising:
- indicating water at an oxygen sensor positioned in an engine intake based on a transient increase in power consumed by a heating element of the oxygen sensor.
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Abstract
Methods and systems are provided for indicating water at an oxygen sensor based on power consumption of a heating element of the oxygen sensor. In one example, water may be indicated at an oxygen sensor positioned in an intake of an engine responsive to power consumption of the heating element of the oxygen sensor increasing above a baseline level. Engine operating parameters may then be adjusted based on the water indication and the power consumption.
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Citations
20 Claims
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1. An engine method, comprising:
indicating water at an oxygen sensor positioned in an engine intake based on a transient increase in power consumed by a heating element of the oxygen sensor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An engine method, comprising:
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adjusting a turbocharger compressing engine intake air; adjusting a direct injection of fuel to the engine; cooling compressed air in a charge air cooler, and adjusting engine operating conditions responsive to power consumption of a heating element of an oxygen sensor in the compressed air increasing above a baseline power consumption level by a threshold amount, the oxygen sensor positioned downstream of the charge air cooler. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. A system for an engine, comprising:
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an intake manifold including an intake throttle; a charge air cooler positioned upstream of the intake manifold; an oxygen sensor positioned at an outlet of the charge air cooler, the oxygen sensor including a heating element; and a controller with computer readable instructions for indicating water at the oxygen sensor in response to an increase in power consumption of the heating element of the oxygen sensor greater than a threshold during a select condition. - View Dependent Claims (20)
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Specification