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. 19, 2007
Filed:
Dec. 18, 2003
Rudolf Christian, Graz, AT;
Michael Wiesinger, Graz, AT;
Ferdinand Purkathofer, Radegund, AT;
AVL List GmbH, Graz, AT;
Abstract
A method and device for continuous measuring of dynamic fluid consumption, particularly gaseous or liquid motor fuel, employs a continuously operating flow sensor with variable decrease in pressure, preferably a mass flow sensor. The pressure downstream from the flow sensor is adjusted to a constant value by changing the admission pressure of the sensor to make possible accurate and rapid consumption measurements with controlled output pressure for the fluid by means of an open system, and also to allow simultaneous measuring of at least a short-time return flow. The device includes a preferably controllable pump () possibly a conditioning device and a tank (), and continuously operating flow sensor () for the fluid, preferably a Coriolis sensor, whereby a line branches off behind the sensor () leading to a pressure sensor whose output is connected to a control device that triggers the devices to influence the volume flow upstream from the sensor ().