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:
Oct. 19, 2004
Filed:
Jan. 03, 2003
Ilija Djordjevic, East Granby, CT (US);
Stanadyne Corporation, Windsor, CT (US);
Abstract
A pump, for supplying high pressure fuel from a fuel tank to an engine via a common rail, includes a motor assembly ( ) mounted on top of the fuel tank, a pump assembly ( ) positioned within the fuel tank, and a support column ( ) rotatably connecting the motor assembly to the pump assembly. A high pressure pump sub-assembly ( ) includes a pump body ( ) having a drive bore ( ) and multiple plunger bores ( ) formed therein. The external profile of a drive member ( ) which is rotatable within the drive bore engages the radially inner end of pumping plungers ( ) disposed in each of the plunger bores for a portion of each revolution to reciprocally move the plungers between radially inner and outer limit positions. Reciprocation towards the inner limit position induces a low pressure in the radially outer end of the plunger bore, thereby drawing fuel via the drive bore without the aid of a low pressure pump.