公开(公告)号：US06302333B1

公开(公告)日：2001-10-16

申请号：US09293767

申请日：1999-04-19

申请人： Karl-Heinz Hoffmann ,  Heinz Oeing ,  Gregor Renner ,  Reinhard Fischer ,  Guenter Vogt ,  Jens-Peter Wobbe

发明人： Karl-Heinz Hoffmann ,  Heinz Oeing ,  Gregor Renner ,  Reinhard Fischer ,  Guenter Vogt ,  Jens-Peter Wobbe

IPC分类号： F02M4702

CPC分类号： F02M55/002 ,  F02M51/0603 ,  F02M61/08 ,  F02M2200/703

摘要： An injector for a fuel injection system is provided with an injector housing in which a piezoelectric stack is located and with a valve housing connected with the injector housing in which a valve closing device with a jet needle is displaceably located. The valve closing device can be actuated by the piezoelectric stack. The valve closing device can be reset by a return device. A hydraulic following amplifier is located between the piezoelectric stack and the jet needle of the valve closing device. The amplifier has a displacement piston actuated by the piezoelectric stack. A control piston located downstream from the displacement piston and increases the displacement travel. A working piston that actuates the jet needle and increases the actuating force.

摘要翻译： 用于燃料喷射系统的喷射器设置有喷射器壳体，其中定位有压电叠层，并且具有与喷射器壳体连接的阀壳体，其中具有喷射针的阀关闭装置可位移地定位。 阀关闭装置可由压电叠层致动。 阀关闭装置可以由返回装置复位。 液压跟随放大器位于压电堆和阀关闭装置的喷射针之间。 放大器具有由压电叠层驱动的位移活塞。 控制活塞位于位移活塞的下游，并增加位移行程。 一个工作活塞，其致动喷射针并增加致动力。