Vehicle emissions testing system
First Claim
1. In an emission testing system including means for collecting vehicle emissions, means for drawing a test sample of said collected vehicle emission for the determination of pollutant components, and analyzer means for determining said pollutant components, the improvement comprising:
- said analyzer means consisting of a single unit including a housing in which is disposed a chemiluminescence reaction cell and a flame ionization detection cell;
common means for conditioning said test sample to lower the moisture content thereof prior to said conditioned test sample reaching said analyzer means;
common means for controlling the flow rate and pressure of said conditioned test sample; and
splitter means for dividing said conditioned test sample to provide uniform conditioned sample flow to said chemiluminescence reaction cell and said flame ionization detection cell.
1 Assignment
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Accused Products
Abstract
There is provided an emission testing system which maintains system integrity and which can be manufactured at less cost than current standard emission testing systems. The system includes a sampling unit for collecting emissions from a vehicle and diluting the collected emissions with background ambient air as required and means for drawing a proportional test sample from the bulk air/emission mixture. The analyzer is a single unit which includes a reaction cell for chemiluminescence reactions and a combustion cell for flame ionization analysis. In addition the system includes a common sample conditioning for the test sample prior to splitting the test sample for chemiluminescence and flame ionization analysis.
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Citations
5 Claims
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1. In an emission testing system including means for collecting vehicle emissions, means for drawing a test sample of said collected vehicle emission for the determination of pollutant components, and analyzer means for determining said pollutant components, the improvement comprising:
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said analyzer means consisting of a single unit including a housing in which is disposed a chemiluminescence reaction cell and a flame ionization detection cell; common means for conditioning said test sample to lower the moisture content thereof prior to said conditioned test sample reaching said analyzer means; common means for controlling the flow rate and pressure of said conditioned test sample; and splitter means for dividing said conditioned test sample to provide uniform conditioned sample flow to said chemiluminescence reaction cell and said flame ionization detection cell. - View Dependent Claims (2, 3, 4, 5)
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Specification