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:
Sep. 05, 2006
Filed:
Mar. 17, 2004
Sören Udd, Nödinge, SE;
Sergi Yudanov, Västra Frölunda, SE;
Sören Udd, Nödinge, SE;
Sergi Yudanov, Västra Frölunda, SE;
Volvo Lastvagnar AB, Göteborg, SE;
Abstract
The fuel injection system according to the invention comprises a nozzle () with an inlet and a needle (). A control piston () forms a control chamber () and abuts the needle such that a higher pressure in the control chamber urges the piston to close the nozzle. A cam-driven plunger () forms a plunger chamber () connected to the inlet of the nozzle. The system also comprises a common rail () for fuel, a feed line () and an electrically operated valve (). The valve isolates the chamber from the common rail and connects it to the line while in a third position, isolates it from both the line and the common rail in a second position, and isolates it from the line and connects it to the common rail in a first position. There are also means () for pressurizing the feed line with a relatively low fuel feed pressure and a fuel tank (). The control chamber is connected to the common rail.