Injection valve having a bypass throttle

Details Injection valve having a bypass throttle Injection valve having a bypass throttle

2004-01-09

2009-08-18

Tran, Len (Department: 3752)

Fluid sprinkling, spraying, and diffusing

Processes

Of fuel injection

C239S088000, C239S533200, C239S585100, C239S102100

Reexamination Certificate

active

07575180

ABSTRACT:
The invention relates to an injection valve, comprising a control chamber (15) with a control piston (16) that is functionally linked with a nozzle needle (35). The control chamber (15) is linked, via an inlet throttle (13), with pressurized fuel, and with an outlet throttle (14) with a valve chamber (9). A servo valve (5) is disposed in the valve chamber (9), said servo valve opening a connection between the valve chamber (9) and a return element (40) depending on its position. The inventive injection valve further comprises a bypass throttle (12) that is interposed between the fuel feed line and the valve chamber.

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A Common Rail Injection System for High Speed Direct Injection Diesel Engines, SAE Paper 980 803, von N. Guerrassi et al. Copyright 1998 Society of Automotive Engineers, Inc., 1998.

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