| 摘要 |
The invention relates to an injection valve, in particular for a common rail injection system comprising a control cylinder directly connected to a nozzle needle which can be moved in the longitudinal direction. A control chamber is encompassed thereby. Said chamber is connected via an inlet throttle to a fuel high pressure source and is connected to a low pressure chamber via an outlet throttle, whereby the outlet throttle is connected to an outlet control valve. Said outlet control valve is connected to a positioning member which is in turn connected to a control unit. Said control unit can be opened and closed. The aim of the invention is to provide a technically easy to assemble, improved hydraulic control system in particular wherein in future even more sub-divided injection procedures (multijet-system) can be performed employing precise and rapid control procedures. An inlet control valve is provided wherewith the inlet throttle can be opened and closed in the reverse direction to the outlet control valve. |
