System for measuring particulate discharge from vehicular intern

Details System for measuring particulate discharge from vehicular intern System for measuring particulate discharge from vehicular intern

1981-02-19

1982-11-30

Kreitman, Stephen A.

Measuring and testing

Gas analysis

Solid content of gas

G01N 1500

Patent

active

043610285

ABSTRACT:
A system for measuring particulate discharge from a vehicular internal combustion engine has a dilution tunnel into which exhaust gases are introduced and mixed with and diluted by clean air. A part of the diluted gases is introduced through a sampling probe into a sampled gas line in which a filter is provided to collect particulates contained in the sampled gases. A differential pressure transducer is provided to detect the pressure drop across the filter and convert the detected pressure drop into an electric signal which is fed into an operator which is operative to compute the quantity of particulate content of the engine exhaust gases on the basis of the time differential of the electric signal from the differential pressure transducer.

REFERENCES:
patent: 3817100 (1974-06-01), Anderson et al.
patent: 3903727 (1975-09-01), Sweet
patent: 3986386 (1976-10-01), Beltzer et al.

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