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:
Feb. 02, 2010
Filed:
Aug. 06, 2008
Michael Fischer, Niefern-Oeschelbronn, DE;
Matthias Schumacher, Asperg, DE;
Christian Wiedmann, Ludwigsburg, DE;
Matthias Maess, Stuttgart, DE;
Matthias Fischer, Ceske Budejovice, CZ;
Michael Fischer, Niefern-Oeschelbronn, DE;
Matthias Schumacher, Asperg, DE;
Christian Wiedmann, Ludwigsburg, DE;
Matthias Maess, Stuttgart, DE;
Matthias Fischer, Ceske Budejovice, CZ;
Robert Bosch GmbH, Stuttgart, DE;
Abstract
The invention relates to a fuel pump for a fuel system of an internal combustion engine, having a housing and a housing cap joined to the housing. In order to create a fuel pump which in its operation generates little airborne sound, structure-borne sound (vibration amplitudes) and pulsations in a low-pressure region of the fuel pump, it is proposed that the housing cap has at least one damping element, which is embodied as a sandwich construction having at least a first cover layer, a second cover layer, and a damping connection layer disposed between them. The damping connection layer has a markedly higher elasticity and/or higher material damping than the two cover layers, which may be constructed of sheet metal or the housing cap itself.