Measuring and testing – Gas analysis – Gas of combustion
Patent
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.
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patent: 4630482 (1986-12-01), Traina
patent: 4656864 (1987-04-01), Kraus et al.
patent: 4663977 (1987-05-01), Vander Heyden
McMahon Timothy M.
Siemens Aktiengesellschaft
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