Vehicle mass emission measurement
US6387706B1 · kind B1 · utility
20Cited by
37References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 13, 2000 |
| Grant date | May 14, 2002 |
| Priority date | — |
| Expiry date | Apr 13, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/20
- WIPO fieldMeasurement
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.