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发明授权
US07339308B2 Actuating unit for a piezo-electrically controlled fuel injection valve 有权
用于压电电控燃油喷射阀的驱动单元

Actuating unit for a piezo-electrically controlled fuel injection valve
摘要：
An actuator unit which is suitable for actuating a fuel injection valve of an injection system for internal combustion engines includes a piezoelectric actuator and a hollow body embodied as a spring. The service life of the actuator unit can be improved by designing the hollow body to eliminate or minimize bending stresses on the piezoelectric actuator.
摘要（中）：

适于致动用于内燃机的喷射系统的燃料喷射阀的致动器单元包括压电致动器和体现为弹簧的中空体。 致动器单元的使用寿命可通过设计中空体来消除或最小化压电致动器上的弯曲应力来改善。

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