Method for determination of concentration of smoke emanating fro

Details Method for determination of concentration of smoke emanating fro Method for determination of concentration of smoke emanating fro

1986-03-11

1988-01-12

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250575, 356438, G01N 1506

Patent

active

047193603

ABSTRACT:
Concentration of a smoke emanating from a combustion engine is determined by projecting beams of light on the flow of smoke in directions traversing the flow of smoke, detecting intensities of beams of light which have traversed the flow of smoke with a light receiving device and calculating a cross-sectional image of the flow of smoke based on detection signals issued by the light receiving device.

REFERENCES:
patent: 3700330 (1972-10-01), Davis
patent: 3994603 (1976-11-01), Paschedag
patent: 4168438 (1979-09-01), Morisue
patent: 4265535 (1981-05-01), Pitt
patent: 4386854 (1983-06-01), Byer
patent: 4420256 (1983-12-01), Fladda et al.
patent: 4449816 (1984-05-01), Kohsaka et al.
patent: 4473296 (1984-09-01), Shofner et al.

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