Global Patent Index - EP 2022975 A1

EP 2022975 A1 2009-02-11 - Injector

Title (en)

Injector

Title (de)

Injektor

Title (fr)

Injecteur

Publication

EP 2022975 A1 (DE)

Application

EP 08104407 A

Priority

DE 102007034319 A

Abstract (en)

The injector (1) has an outlet throttle channel (24) by which a control chamber (8) is connected with a low-pressure area (6) in the later switching position of the control valve (20). The control chamber is provided with the high pressure area connecting an inlet throttle channel (26).

Abstract (de)

Die Erfindung betrifft einen Injektor zum Einspritzen von Kraftstoff in einen Brennraum einer Brennkraftmaschine, insbesondere Common-Rail-Injektor, mit einem in Abhängigkeit des Kraftstoffdruckes in einer Steuerkammer (8) zwischen einer Schließstellung und einer den Kraftstofffluss freigebenden Öffnungsstellung verstellbaren Ventilelement (10), und mit einem der Steuerkammer (8) zugeordneten Steuerventil (20), an das die Steuerkammer (8) über einen Rückfüllkanal (28) angebunden ist und das über einen Zulaufkanal (22) an einen Hochdruckbereich des Injektors (1) angebunden ist, wobei in einer ersten Schaltstellung des Steuerventils (20) der Zulaufkanal (22) geöffnet und die Steuerkammer (8) mit dem Hochdruckbereich des Injektors (1) verbunden und die Steuerkammer (8) von einem Niederdruckbereich (6) getrennt ist, und wobei in einer zweiten Schaltstellung des Steuerventils (20) der Zulaufkanal (22) gesperrt und die Steuerkammer (8) mit dem Niederdruckbereich (6) verbunden ist. Erfindungsgemäß ist vorgesehen, dass ein Ablaufdrosselkanal (24) vorgesehen ist, über den die Steuerkammer (8) in der zweiten Schaltstellung des Steuerventils (20) mit dem Niederdruckbereich (6) verbunden ist.

IPC 8 full level (invention and additional information)

F02M 47/02 (2006.01); F02M 63/00 (2006.01)

CPC (invention and additional information)

F02M 63/0045 (2013.01); F02M 47/027 (2013.01); F02M 63/0015 (2013.01); F02M 63/004 (2013.01); F02M 63/0225 (2013.01)

Citation (applicant)

Citation (search report)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

Designated extension state (EPC)

AL BA MK RS

EPO simple patent family

EP 2022975 A1 20090211; EP 2022975 B1 20100512; AT 467757 T 20100515; DE 102007034319 A1 20090129; DE 502008000639 D1 20100624

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