Vehicle mass emission measurement
AssigneeSensors, Inc.
InventorGideon Eden
Life of this patent
Estimating the term…
Abstract
A method and apparatus for measuring vehicle exhaust emission includes sampling vehicle exhaust and a dilute mixture of vehicle exhaust and ambient air. A first analyzer measures concentrations of gas components of undiluted vehicle exhaust. A second analyzer measures concentration or temperature of at least one exhaust gas component present in the dilute mixture gas component. Flow rate of the dilute mixture, the concentration and/or temperature of the at least one dilute mixture gas component and undiluted gas concentration are analyzed by a microprocessor to produce mass emissions of the vehicle exhaust gas components.
Claims12
A method of measuring vehicle exhaust mass emission, comprising:
- sampling undiluted vehicle exhaust and a dilute mixture of vehicle exhaust and ambient air;
- measuring concentrations of undiluted gas components of said vehicle exhaust;
- measuring the temperatures of the undiluted exhaust gas, the dilute mixture and the ambient air;
- measuring flow rate of said dilute mixture;
- and
- resolving said concentration of undiluted exhaust gas components, said temperatures and said flow rate of said dilute mixture to mass emissions of said exhaust gas components.
Dependencies are inferred from the claim text.