发明授权
- 专利标题： Injector for fuel injector systems
- 专利标题（中）： 喷油器系统喷油器
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申请号： US09293767申请日： 1999-04-19
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公开(公告)号： US06302333B1公开(公告)日： 2001-10-16
- 发明人: Karl-Heinz Hoffmann , Heinz Oeing , Gregor Renner , Reinhard Fischer , Guenter Vogt , Jens-Peter Wobbe
- 申请人： Karl-Heinz Hoffmann , Heinz Oeing , Gregor Renner , Reinhard Fischer , Guenter Vogt , Jens-Peter Wobbe
- 优先权： DE19817320 19980418
- 主分类号： F02M4702
- IPC分类号： F02M4702
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.
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