Measuring and testing – Volume or rate of flow – Thermal type
Patent
1983-12-21
1985-09-03
Goldstein, Herbert
Measuring and testing
Volume or rate of flow
Thermal type
338 25, G01F 168
Patent
active
045384576
ABSTRACT:
An apparatus is proposed to measure the mass of a flowing medium, especially to measure the amount of aspirated air of internal combustion engines. The apparatus consists of an electronic regulating circuit and of a temperature-dependent measuring resistor in the form of a hot wire placed in the medium flow, which is led in the form of a coil around each of the hook-shaped ends of each of the supports. One end of the hot wire, the latter being covered with a thin, electrically insulating layer, is connected with the hook-shaped end in an electrically conducting manner, while the other end of the hot wire is connected with the hook-shaped end of the other support. The closely bundled hot wire coils can be covered with a common protective layer. The supports can serve as electrical connections for the hot wire and are fastened to a carrier.
REFERENCES:
patent: 3900819 (1975-08-01), Djorup
patent: 3971247 (1976-07-01), Rodder
patent: 4276773 (1984-07-01), Kawai et al.
patent: 4299125 (1981-11-01), Romann et al.
patent: 4450714 (1984-05-01), Prohaska et al.
Datametrics Bulletin 600, "Heated Sensor Finds Wide Applications in Fluid Flow", 10/70, pp. 5, 7, 8 and FIGS. 4-6.
Gneiss Heinz
Sumal Jaihind S.
Goldstein Herbert
Greigg Edwin E.
Robert & Bosch GmbH
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