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US 2006/0130569 A1Published application
Device and method for determining pressure fluctuations in a fuel supply system
AssigneeRobert Bosch GmbH
InventorsJochen Walther, Oliver Schulz, Oliver Becker
Life of this patent
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Abstract
A device and a method for determining pressure fluctuations in a fuel supply system provide two signal filters to enable determining as much information about pressure fluctuations as possible with minimal sensor use. A sensor signal which is characteristic of a pressure in the area of a fuel injector is filtered using the two filters, which have filter characteristics that differ from one another.
Claims12
A device for determining pressure fluctuations in a fuel supply system, comprising:
- a first filter for receiving and filtering a signal characterizing a pressure in the area of a first fuel injector of the fuel supply system;
- and
- a second filter for receiving and filtering the signal characterizing the pressure in the area of the first fuel injector;
- wherein the first filter has a first filter characteristic and the second filter has a second filter characteristic which differs from the first filter characteristic.
1 more element
A method for determining pressure fluctuations in a fuel supply system, comprising:
- generating, using a sensor, a signal characterizing a pressure in the area of a first fuel injector of the fuel supply system;
- filtering the signal characterizing the pressure in the area of the first fuel injector using a first filter, wherein the first filter has a first filter characteristic;
- and
- filtering the signal characterizing the pressure in the area of the first fuel injector using a second filter, wherein the second filter has a second filter characteristic which differs from the first filter characteristic.
1 more element
Dependencies are inferred from the claim text.