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. 18, 1989
Filed:
Jul. 15, 1988
Applicant:
Inventors:
Wolfgang Weibler, Hofheim a. T., DE;
Wolfgang Porth, Frankfurt am Main, DE;
Assignee:
VDO Adolf Schindling AG, Frankfurt am Main, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02D / ;
U.S. Cl.
CPC ...
123494 ; 731182 ; 7320418 ; 7320424 ;
Abstract
In order to determine the correct mass flow of a rapidly pulsating stream of fluid, in particular in the intake duct 10 of an internal combustion engine, a device for determining the mass flow and the direction of flow is proposed which has a temperature sensor 17, a thermoelectric mass-flow sensor 16 and two temperature-measuring elements 12, 14 arranged adjacent said mass flow sensor. One temperature-measuring element 12 or 14 is located in the feed stream and the other temperature-measuring element 14 or 12 in the discharge stream of the thermal mass-flow sensor 16, depending on the direction of flow.