Method and device for determining the pressure in pipes
AssigneeSiemens Aktiengesellschaft
InventorsJulian Baumann, Dirk Göger, Thomas Schlegl
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Abstract
In a method for determining the absolute pressure in pipes through which there is a fluid flow, in particular injection lines in diesel-operated internal combustion engine, a first signal from a first pressure sensor is detected. This first signal is integrated. The integrated signal is multiplied by a factor. This multiplied factor is then added to an operating pressure. This method advantageously allows detection of the absolute pressure within the injection line that connects the rail of an internal combustion engine to the corresponding injector.
Claims25
A method for determining the absolute pressure in pipes, through which there is a fluid flow, comprising the following steps:
- a) generating a first signal by a sensor comprising a core arranged around a pipe and a measuring coil arranged around said core;
- b) detecting the first signal;
- c) integrating the first signal;
- d) multiplying the integrated value by a factor;
- and
- e) adding an operating pressure to the multiplied value.
A device for determining the absolute pressure in pipes, through which there is a fluid flow, the device comprising:
- a first pressure sensor comprising a core arranged around a pipe and a measuring coil arranged around said core,
- an integration unit coupled with the first pressure sensor;
- a multiplication unit coupled with the integration unit;
- and
- an addition unit coupled with the multiplication unit.
A device for determining the absolute pressure in pipes, through which there is a fluid flow, the device comprising:
- a first pressure sensor,
- an integration unit coupled with the first pressure sensor;
- a low-pass filter and/or a high-pass filter are connected between the first pressure sensor and the integration unit;
- a multiplication unit coupled with the integration unit;
- and
- an addition unit coupled with the multiplication unit.
Dependencies are inferred from the claim text.