Measuring and testing – Volume or rate of flow – Thermal type
Patent
1986-01-27
1987-12-29
Goldstein, Herbert
Measuring and testing
Volume or rate of flow
Thermal type
G01F 168
Patent
active
047152249
ABSTRACT:
A device which serves to measure the mass of a flowing medium, in particular the mass of the air aspirated by an internal combustion engine. The device includes a substrate on the bottom and top of which there is disposed a respective temperature-dependent resistor electrically connected in parallel and preferably embodied as a film, on both sides of which at peripheral areas low-impedance electrical conductor tracks are provided. The peripheral areas of the substrate are partially encompassed by U-shaped deformations provided on metallic retainers. The retainers simultaneously serve as electrical connections via soldered areas provided between the U-shaped deformations and the conductor tracks. The retainers protrude into the flow of the medium and have good thermal conductivity, so that they are virtually at the temperature of the flowing medium, and hence the temperature of the peripheral areas is also kept at the temperature of the flowing medium. To reinforce this effect, additional thermal conduction surfaces on the retainers or further thermal conduction elements which have good thermal conductivity, can be provided. With the temperatures of the peripheral areas kept to the temperature of the flow of the medium, short startup and response times are provided by the device even when there are sudden major changes in the mass of the flowing medium.
REFERENCES:
patent: 3592055 (1971-07-01), Dorman
patent: 3900819 (1975-08-01), Djorup
patent: 4024761 (1977-05-01), Djorup
patent: 4214478 (1980-07-01), Lauterbach
patent: 4354829 (1983-11-01), Sumal
patent: 4468963 (1984-09-01), Schauble
patent: 4549433 (1985-10-01), Gneiss et al.
Goldstein Herbert
Greigg Edwin E.
Robert & Bosch GmbH
LandOfFree
Method and apparatus for measuring the mass of a flowing medium does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for measuring the mass of a flowing medium, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for measuring the mass of a flowing medium will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-455409