CVS system sample water vapor management
First Claim
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1. An engine emissions test system comprising:
- a sampling conduit configured to receive exhaust from an engine;
at least one sample bag configured to store a sample of exhaust;
a read circuit including a read line configured to communicate the stored sample of exhaust from the at least one sample bag to an analyzer, wherein the analyzer is configured to analyze the sample of exhaust to determine an amount of combustion byproducts therein;
a sample gas line extending from the sampling conduit to the read line for communicating the sample of exhaust from the sampling conduit to the at least one sample bag; and
a fill circuit including;
a fill gas line configured to provide a fill gas to be mixed with the sample of exhaust, the fill gas line extending from a fill gas source to the read line; and
at least one of a pump and a flow meter disposed in the fill gas line.
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Abstract
An engine emissions test system according to the principles of the present disclosure includes a sampling conduit, at least one sample bag, a read circuit, and a fill circuit. The sampling conduit is configured to receive exhaust from an engine. The at least one sample bag is configured to store a sample of exhaust. The read circuit is configured to communicate the stored sample of exhaust between the at least one sample bag and an analyzer. The fill circuit includes a fill gas line configured to provide a fill gas to be mixed with the sample of exhaust. The fill gas line extends between a fill gas source and the read circuit.
37 Citations
16 Claims
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1. An engine emissions test system comprising:
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a sampling conduit configured to receive exhaust from an engine; at least one sample bag configured to store a sample of exhaust; a read circuit including a read line configured to communicate the stored sample of exhaust from the at least one sample bag to an analyzer, wherein the analyzer is configured to analyze the sample of exhaust to determine an amount of combustion byproducts therein; a sample gas line extending from the sampling conduit to the read line for communicating the sample of exhaust from the sampling conduit to the at least one sample bag; and a fill circuit including; a fill gas line configured to provide a fill gas to be mixed with the sample of exhaust, the fill gas line extending from a fill gas source to the read line; and at least one of a pump and a flow meter disposed in the fill gas line. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An engine emissions test system comprising:
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a sampling conduit in which exhaust from an engine is diluted with a dilution gas; at least one sample bag configured to store a sample of the diluted exhaust; a first gas line configured to communicate the sample of the diluted exhaust from the at least one sample bag to an analyzer, wherein the analyzer is configured to analyze the sample of diluted exhaust to determine an amount of combustion byproducts therein; a second gas line extending from a fill gas source to the first gas line for providing a fill gas to be mixed with the sample of diluted exhaust, wherein at least one of a pump and a flow meter is disposed in the second gas line; and a third gas line extending from the sampling conduit to the first gas line for providing the sample of the diluted exhaust to the at least one sample bag. - View Dependent Claims (10, 11, 12, 13)
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14. An engine emissions test system comprising:
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a sampling conduit configured to receive exhaust from an engine; at least one sample bag configured to store a sample of exhaust; a first gas line configured to communicate exhaust from the sampling conduit to the at least one sample bag, wherein the first gas line includes a first pump and a first flow meter; a second gas line extending from a fill gas source to the first gas line for providing a fill gas to the at least one sample bag, wherein the second gas line includes a second pump and a second flow meter; and a third gas line extending between the first gas line and an analyzer for communicating the stored sample of exhaust from the at least one sample bag to the analyzer, wherein the analyzer is configured to analyze the sample of exhaust to determine an amount of combustion byproducts therein. - View Dependent Claims (15, 16)
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Specification