Avl List Gmbh

Rudolf Christian

Michael Wiesinger

Klaus-Christoph Harms

Michael Tauch

Ferdinand Purkathofer

Hubert Schwarzbauer

Dieter Chybin

For the functional testing of an arrangement for dynamic fuel consumption measurement, at least two reference flows are produced through successive operation, at different frequencies, of a system pump () provided in any case for the regulated fuel flow, and the gradient determined from the reference measured values obtained is compared with the known gradients of the characteristic curve of the system pump ().

Method for functional testing of arrangement for dynamic fuel consumption measurement

A method for continuous measurement of the dynamic fluid consumption of a consumer by use of a two-way flow sensor, particularly the measurement of gaseous or liquid fuel, and possibly a conditioning device, whereby the pressure is reduced to a constant exit pressure downstream from the flow sensor. A minimum quantity of fluid is fed through the pressure regulator at any desired time whereby fluid is continuously returned in variable quantities from the region of constant exit pressure to the region between the flow sensor and the pressure regulator to make possible a continuous, accurate and timely highly defined consumption measurement with controlled exit pressure for the fluids using an open system which is able to maintain pressures in the entire line system even at highly dynamic consumption changes and which does not allow the formation of a multiphase flow. The device for to carrying out the method is provided with a pressure control device downstream from the flow sensor and a connecting line with a pump leading from the region behind the pressure control device to the region between the flow sensor and the pressure control device.

Method for continuous measurement of dynamic fluid consumption

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 ().

Method and apparatus for continuous measuring of dynamic fluid consumption

The invention relates to a system for the conduction of liquid media, for example fuels, between a tank and a delivery point, especially fuel consumption measuring systems or fuel conditioning systems, which includes a bubble-separating arrangement, as well as a filter element for use in such a system. For the simple and effective detection and separation of bubbles and further contaminations of every type in the particular liquid medium and, if necessary, the further development for additional simple and rapid determination of their volumes and therewith consideration in possible measurements, it is provided that the bubble-separating arrangement is formed by a filtering device and in the filtering device the connection for the liquid medium is arranged in a zone outside the filtering element.

Growing community of inventors

Graz, Austria

Rudolf Christian