Measuring and testing – Simulating operating condition – Marine
Patent
1981-04-30
1983-08-09
Goldstein, Herbert
Measuring and testing
Simulating operating condition
Marine
73204, G01F 168
Patent
active
043971792
ABSTRACT:
A device is proposed for measuring the mass of a flowing medium, in particular for measuring the mass of air aspirated by an internal combustion engine. The device is provided with a temperature-dependent resistor disposed in the flow of the medium, whose temperature and/or resistance is regulated in accordance with the mass of the medium; the control variable represents a standard for the mass of the medium. The temperature-dependent resistor is embodied as a hot strip or a hot wire and is held via at least three support points. The central support point located between the two terminal support points is embodied as elastically yielding, such that forces engaging the hot strip or hot wire do not cause any permanent deformation thereof. Accordingly, the destruction of the hot strip or hot wire, as well as changes in the characteristic measuring curve, are prevented.
REFERENCES:
patent: 3286174 (1966-11-01), Schaschl
patent: 3971247 (1976-07-01), Rodder
patent: 4196622 (1980-04-01), Peter
patent: 4213335 (1980-07-01), Peter et al.
patent: 4252016 (1981-02-01), Sauer et al.
patent: 4338814 (1982-07-01), Romann
Goldstein Herbert
Greigg Edwin E.
Robert & Bosch GmbH
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