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:
Jun. 27, 1989
Filed:
Sep. 17, 1987
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 ...
G01P / ; F02D / ; F02D / ;
U.S. Cl.
CPC ...
123494 ; 731182 ; 7320421 ;
Abstract
In order to recognize the occurrence of reverse flow in a rapidly pulsation stream of fluid flowing with constant mass flow in particular within the intake duct (10) of an internal combustion engine, there is proposed a device for determining the direction of flow having a turbulence-sensitive sensor element (12) which is arranged between a flow straightener (32) and an eddy element (16), the sensor element (12) being exposed to laminar or else to turbulent flow depending on the direction of flow.