Exhaust sampler and control means

Details Exhaust sampler and control means Exhaust sampler and control means

1991-05-03

1993-02-09

Williams, Hezron E.

Measuring and testing

Gas analysis

Gas of combustion

7386301, G01N 122

Patent

active

051845016

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.

REFERENCES:
patent: 3593023 (1971-07-01), Dodson et al.
patent: 3603155 (1971-09-01), Morris et al.
patent: 3699814 (1972-10-01), Kaufman
patent: 3817100 (1974-06-01), Anderson et al.
patent: 3965749 (1976-06-01), Hadden et al.
patent: 4586367 (1986-05-01), Lewis
patent: 4660408 (1987-04-01), Lewis
patent: 4823591 (1989-04-01), Lewis

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