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:
May. 31, 2005
Filed:
Aug. 13, 2001
Ilija Djordjevic, East Granby, CT (US);
Ilija Djordjevic, East Granby, CT (US);
Stanadyne Corporation, Windsor, CT (US);
Abstract
In a common rail gasoline fuel injection system having a high pressure fuel supply pump () in which fuel is pressurized in a pumping chamber and delivered through a high pressure passage () to the common rail (), the improvement comprising a flow volume intensifier () situated in the high pressure passage (). Preferably the intensifier has a cranking configuration in which a primary piston () of relatively low effective cross sectional area on which only the primary pressure of the pumping chamber is imposed, and a secondary piston () contacting the primary piston () and having a relatively large effective cross sectional area on which only the common rail pressure is imposed, whereby when the primary piston () is displaced a primary volume toward the secondary piston () by the primary pressure from the pumping chamber, the secondary piston () displaces a secondary volume of fuel into common rail () that is larger said primary volume.