Method for limiting the maximum injection pressure of magnet-controlled, cam-driven injection components
AssigneeRobert Bosch GmbH
InventorsNestor Rodriguez-Amaya, Uwe Schmidt
Life of this patent
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Abstract
A method for limiting the maximum allowable operating pressure at a cam-driven injection component, which component is actuatable by a magnet valve assembly. After assembly a magnet valve it is operated at a pressure source in the context of a function test, and at least one operating parameter defining a critical operating state is ascertained at which the valve just barely opens in response to a hydraulic force F3. The operating parameter ascertained is delivered to the respective magnet valve assembly and is written into a function control unit for individual triggering of each magnet valve assembly with its own operating parameter.
Claims20
A method for limiting for the maximum allowable operating pressure at a cam-driven injection component, which component is actuatable by means of a magnet valve assembly (1, 1.1, 1.2, 1.3, 1.4), the method comprising the following method steps:
- a) operating an assembled a magnet valve assembly (1) at a pressure source (18) in the context of a function test;
- b) ascertaining for each magnet valve assembly (1), at least one operating parameter (33, 34, 35, 36) defining a critical operating state at which the magnet valve assembly (1) just barely opens in response to a hydraulic force F3;
- c) delivering the ascertained operating parameter (33, 34, 35, 36) to the respective magnet valve assembly (1);
- and
- d) writing the operating parameter (33, 34, 35, 36) ascertained for each magnet valve assembly (1) of an injection component for an internal combustion engine into a function control unit (40) for individual triggering of each magnet valve assembly (1.1., 1.2, 1.3, 1.4) with its own operating parameter (33, 34, 35, 36) that is ascertained for that specific example.
Dependencies are inferred from the claim text.