Method for identifying the concentration of fuels or gases

Details Method for identifying the concentration of fuels or gases Method for identifying the concentration of fuels or gases

1992-09-24

1994-07-05

McMahon, Timothy M.

Measuring and testing

Gas analysis

Gas of combustion

73 2401, 73 2404, 123510, 123494, 137 88, 367 13, 367191, G01N 2902

Patent

active

053257030

ABSTRACT:
The present invention discloses a method for identifying the concentration of fuels or gases in air, particularly in the intake of motor vehicle motors, with ultrasound measurement, comprising the steps of conducting an air/vapor mixture whose concentration is to be identified through an ultrasound measuring section of known length, directing ultrasound through the mixture in the measuring section, determining the speed of sound through the air/vapor mixture; and identifying the concentration of the mixture on the basis of the speed of sound through the mixture in the measuring section.

REFERENCES:
patent: 4003242 (1977-01-01), Houben et al.
patent: 4007625 (1977-02-01), Houben et al.
patent: 4163384 (1979-08-01), Blakemore
patent: 4220040 (1980-09-01), Noguchi et al.
patent: 4246773 (1981-01-01), Haruta
patent: 4424703 (1984-01-01), Winter et al.
patent: 4630482 (1986-12-01), Traina
patent: 4656864 (1987-04-01), Kraus et al.
patent: 4663977 (1987-05-01), Vander Heyden

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