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:
Dec. 20, 1983
Filed:
Jun. 18, 1981
Peter Rapps, Karlsruhe, DE;
Ulrich Drews, Vaihingen, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A device is proposed for measuring the flowthrough rate in an internal combustion engine, particularly for measuring the air throughput in the intake tube. The device has a measurement bridge functioning on the principle of constant-temperature control, and also a regulating deivce for the total bridge current during the burn-off phase of the hot wire or hot film as one of the bridge resistors. The essential feature is that the bridge circuit assembly comprises at least three voltage dividers; for the purpose of regulating the electric current in the burn-off phase and during measurement operation, respective control voltages are picked up between two different voltage dividers.