The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 16, 1985
Filed:
Sep. 14, 1982
Jaihind S Sumal, Vaihingen-Ensingen, DE;
Robert Bosch GmbH, Stuttgart, DE;
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.