| 摘要 |
<p>An injection device for a fuel reservoir injection system is proposed, having an injection nozzle (16), which protrudes into a combustion chamber and can be supplied with fuel from a high-pressure fuel distributor (10) by means of a high-pressure fuel supply path (14, 52, 44, 40), and having a nozzle needle (30), which opens and closes this injection nozzle (16) as a function of the pressure in a control chamber (58). In order to introduce fuel into the control chamber, an inlet conduit (62), which branches from the fuel supply path, feeds into this control chamber (58) and an outlet path (66, 78), which leads from this control chamber (58), permits fuel to flow out of the control chamber. A shutoff valve (70) can close a downstream section (66'') off from an upstream section (66') of the outlet path. The downstream section and the upstream section of the outlet path feed into a valve chamber (78), which contains a movable shutoff element (76). A bypass conduit (74), which feeds into the outlet path, branches from the fuel supply path in order to introduce an additional fuel flow into the control chamber. In order to minimally interfere with the flow behavior in the outflow of fuel, the infeed point of the bypass conduit into the outlet path is disposed in the vicinity of the valve chamber</p> |
