Exhaust sampling system and method for water vapor management
First Claim
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1. An exhaust sampling system comprising:
- a plurality of exhaust sampling system zones, the exhaust sampling system zones including a sampling conduit, a fill circuit, a read circuit, and at least one sampling bag; and
a controller programmed to;
predict minimum dilution ratios to avoid condensation in each of the exhaust sampling system zones; and
run a test procedure in which a sample of exhaust is diluted with make-up gas at a selected minimum dilution ratio that is greater than or equal to a maximum of the predicted minimum dilution ratios.
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Abstract
Disclosed is an exhaust sampling system including a plurality of exhaust sampling system zones. The zones are, at least, a sampling conduit, a fill circuit, and a read circuit. A controller is programmed to predict a minimum dilution ratio to avoid condensation in one of the exhaust sampling system zones. The controller is further programmed to run a test procedure in which a sample of exhaust is diluted with a make-up gas at a selected minimum dilution ratio that is greater than or equal to the predicted minimum dilution ratio. Further disclosed are methods of predicting whether condensation occurs during a test procedure.
46 Citations
14 Claims
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1. An exhaust sampling system comprising:
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a plurality of exhaust sampling system zones, the exhaust sampling system zones including a sampling conduit, a fill circuit, a read circuit, and at least one sampling bag; and a controller programmed to; predict minimum dilution ratios to avoid condensation in each of the exhaust sampling system zones; and run a test procedure in which a sample of exhaust is diluted with make-up gas at a selected minimum dilution ratio that is greater than or equal to a maximum of the predicted minimum dilution ratios. - View Dependent Claims (2, 3)
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4. A method of diluting an exhaust sample comprising:
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predicting, with a controller, minimum dilution ratios to avoid condensation in each of a fill circuit, a read circuit, a sampling conduit, and at least one sample bag; and diluting exhaust with a make-up gas, during a test procedure, at a ratio greater than or equal to a maximum of the predicted minimum dilution ratios. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification