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:
Jan. 03, 2006
Filed:
Dec. 16, 2004
Jochen Schmitt, Langen, DE;
Holger Dilchert, Frankfurt, DE;
Michael Teichert, Schwalbach/Taunus, DE;
Andreas Bernert, Bad Homburg, DE;
Jochen Schmitt, Langen, DE;
Holger Dilchert, Frankfurt, DE;
Michael Teichert, Schwalbach/Taunus, DE;
Andreas Bernert, Bad Homburg, DE;
Siemens VDO Automotive Corporation, Auburn Hills, MI (US);
Abstract
A coupling valve structureis provided for a fuel supply module. The module has a fuel pumpdisposed in a fuel reservoir, a feed linein fluid communication with an outlet of the fuel pump for feeding fuel to a high pressure pumpand thus to an engine, and a return linefor returning excess fuel from the engine or high pressure fuel pump to the reservoir. The coupling valve structureincludes a check valveconstructed and arranged to communicate with the feed line to permit fuel to be delivered to the engine and to prevent the fuel from draining back to the fuel pump, and a pressure relief valveintegrally connected with the check valve via a conduit. The pressure relief valveis constructed and arranged to communicate with the return line such that when pressure of the fuel at the check valveis outside a certain pressure range, the pressure relief valve will open to permit fuel in the conduit to enter the return line to thereby maintain fuel exiting the check valve within the certain pressure range.