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:
May. 20, 2014
Filed:
Mar. 30, 2010
Martin Brandt, Wörth a.d. Donau, DE;
Martin Brandt, Wörth a.d. Donau, DE;
Continental Automotive GmbH, Hannover, DE;
Abstract
An injection valve is hydraulically coupled to a high-pressure accumulator in order to supply a fluid. The injection valve has a longitudinal axis, an injection needle, and an actuator. The actuator is designed to act on the injection needle. A pre-defined amount of electrical energy is supplied to the actuator in order to modify an axial length of the actuator in such a way that the injection needle moves out of the closed position. Once the pre-defined amount of electrical energy has been supplied, a first voltage value and a second voltage value are detected and/or determined by the actuator at respectively different pre-defined moments. On the basis of the first and second voltage values, a differential voltage value is determined, on the basis of which a first pressure is determined, which represents a pressure in the high-pressure accumulator.