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:
Mar. 04, 2014
Filed:
Feb. 04, 2009
Andreas Gruenberger, Spraitbach, DE;
Andreas Gruenberger, Spraitbach, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A fuel injection valve includes a nozzle needle interacting with a valve seat by longitudinal movements thereof, thus opening/closing an injection opening. The nozzle needle undergoes a locking force toward the valve seat pressure in a control space. A control valve adjusts pressure in the control space. The control valve has a control valve space connected to the control space, in which a control valve member is disposed longitudinally movably, and opens and closes a connection of the control valve space to a leakage oil space by longitudinal movement. The control valve member is surrounded by pressure in the control valve space and configured such that no or very little resulting hydraulic force acts upon the control valve member in the movement direction by the pressure in the control space, if the control valve member closes the connection of the control valve space to the leakage oil space.