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. 20, 2007
Filed:
Jan. 20, 2005
Lothar Dickenscheid, Ockenheim, DE;
Bernd Herzog, Huenfelden, DE;
Lothar Dickenscheid, Ockenheim, DE;
Bernd Herzog, Huenfelden, DE;
Siemens Aktiengesellschaft, Munich, DE;
Abstract
In an apparatus () for controlling a pressure in a fuel inflow line of a motor vehicle, a shutoff valve () and a pressure limiting valve () are arranged in a connection (). The connection () is arranged between an inflow junction () which leads to the inflow line and an outflow junction () which is led into a fuel container. The pressure limiting valve () opens above a first pressure and throttles the flow of the fuel through the connection (). The shutoff valve () closes above a second pressure, the second pressure being higher than the first pressure. This ensures that, when a fuel delivery unit is at a standstill, the pressure in the inflow line does not exceed the first pressure and that, during operation of the delivery unit, the pressure in the inflow line can rise above the second pressure and an internal combustion engine of the motor vehicle is supplied sufficiently with fuel.