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. 26, 2013
Filed:
Jul. 17, 2008
Gerhard Haaf, Stuttgart, DE;
Timm Hollmann, Benningen, DE;
Christian Wiedmann, Ludwigsburg, DE;
Joerg Kuempel, Stuttgart, DE;
Gerhard Haaf, Stuttgart, DE;
Timm Hollmann, Benningen, DE;
Christian Wiedmann, Ludwigsburg, DE;
Joerg Kuempel, Stuttgart, DE;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
A method for controlling a fuel injection system () of an internal combustion engine. Including a high-pressure pump () associated with a quantity controlling valve () having a solenoid valve () electromagnetically actuatable by a coil () for supplying fuel, the quantity control valve () controlling the quantity of fuel supplied by the high-pressure pump () and the coil () of the solenoid valve () having a first current value applied thereto, in order to close the same for supplying fuel to the high-pressure pump (), the first current value being reduced to a second current value when the solenoid valve is closing (), such that the radiation of audible sound arising from the closing of the solenoid valve () is at least partially reduced.