Title:
EXHAUST OPACITY MEASURING DEVICE
Document Type and Number:
WIPO Patent Application WO2003023349
Kind Code:
A3
Abstract:
A remote emissions sensing system and method for sensing exhaust emissions from motor vehicles is provided where the system determines the opacity of an exhaust plume. The system comprises a radiation source that emits radiation which is passed through the exhaust plume of a motor vehicle to one or more detectors arranged to receive the radiation. Multiple wavelength opacity measuring embodiments and monochromatic wavelength opacity measuring embodiments are disclosed.
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Inventors:
STEDMAN DONALD H
BISHOP GARY A
FULL GARY
BISHOP GARY A
FULL GARY
Application Number:
PCT/US2002/028664
Publication Date:
April 24, 2003
Filing Date:
September 11, 2002
Export Citation:
Assignee:
ENVIRONMENTAL SYST PROD (US)
International Classes:
G01N21/27; G01M15/10; G01N21/31; G01N21/33; G01N21/35; G01N21/3504; G01N21/39; (IPC1-7): G01N31/00; G06F19/00
Foreign References:
| US6025920A | 2000-02-15 | |||
| US5831267A | 1998-11-03 | |||
| US4801209A | 1989-01-31 | |||
| US5884226A | 1999-03-16 |
Other References:
See also references of EP 1425576A4
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