Measuring and testing – Simulating operating condition – Marine
Patent
1982-09-14
1985-04-16
Caldwell, Sr., John W.
Measuring and testing
Simulating operating condition
Marine
73204, G01M 1500
Patent
active
045107955
ABSTRACT:
A method is proposed for measuring the throughput of a medium, in particular the air aspirated by an internal combustion engine, in a flow cross section and for correcting the flowthrough measurement value (U.sub.s) furnished by a air flow measuring device in the event of a pulsating flow. To this end, the air flow measurement value (U.sub.s) is modified, in a selected range of the characteristic curve of the air flow measuring device, in such a manner that the error in the air flow measurement value (U.sub.s) resulting from the pulsation of the medium is reduced or compensated for. The range of the characteristic curve selected for modification of the air flow measurement value (U.sub.s) preferably is located below a minimum air flow measurement value (U.sub.sm) characterizing a minimum air flow value (Q.sub.m). In like manner, in order to modify the air flow measurement value (U.sub.s) below the minimum air flow measurement value (U.sub.sm) characterizing the minimum air flow value (Q.sub.m), a corrective air flow measurement value (U.sub.sk) can be established, which is smaller than the air flow value (U.sub.so) at an air flow value of zero.
REFERENCES:
patent: 4213335 (1980-07-01), Peter et al.
patent: 4275695 (1981-06-01), Bauer
patent: 4311042 (1982-01-01), Hosoya
Stoll, H. W., Flow: It's Measurement and Control in Science and Industry, vol. 1, Instrument Society of America, 1974, p. 197.
Caldwell Sr. John W.
Greigg Edwin E.
Harding Ellwood G.
Robert & Bosch GmbH
LandOfFree
Method for measuring air flow 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 for measuring air flow, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for measuring air flow will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1449013