Exhaust sampler and control means
US5184501A · kind A · utility
49Cited by
8References
32Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 3, 1991 |
| Grant date | Feb 9, 1993 |
| Priority date | — |
| Expiry date | May 3, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N1/38
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An exhaust sampler for use in evaluating exhaust emissions of an exhaust source such as an internal combustion engine which utilizes a calibrated subsonic venturi for measuring the exhaust or exhaust/dilution air flow rate. Controls are provided for selecting and controlling a variety of flow rates between or during test periods. The system also provides a variety of control methods for extracting a sample from the bulkstream flow of exhaust and dilution air or from raw exhaust flow.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.