US 2006/0186226 A1 · Fuel injector for internal combustion engines

Abstract

A fuel injector for an internal combustion engine, with an injector body having at least one first injection orifice and at least one second injection orifice a hollow first nozzle needle guided in a first needle guide of the injector body and controlling the injection of fuel through the at first injection orifice(s), and having a second nozzle needle disposed coaxial to the first nozzle needle and controlling the injection of fuel through the at least one second injection orifice. The first nozzle needle is provided with a first catch contour which, once the first nozzle needle opens a predetermined preliminary stroke cooperates with a second catch contour on the second nozzle needle and when the opening movement of the first nozzle needle exceeds the preliminary stroke carries the second nozzle needle along with it.

Claims21

Dependent claims

1-13. (canceled)

Dependencies are inferred from the claim text.

Facts

Application

10/538,031Filed 13 May 2004

Priority

DE 10326044.710 Jun 2003

Published

24 Aug 2006

Term ends

Not estimatedThe source records don’t support an estimate.

Classification7 codes

F02M 45/083
Injectors peculiar thereto: having two or more closing springs acting on injection-valve
F02M 45/086
Injectors peculiar thereto: having more than one injection-valve controlling discharge orifices
F02M 47/02
Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure: of accumulator-injector type, i.e. having fuel…
F02M 47/06
Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure: other fuel injectors peculiar thereto

Fuel injector for internal combustion engines

Life of this patent

Fuel injector for internal combustion engines

Life of this patent

Abstract

Claims21