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汽车电喷系统中功率器件的设计和保护对于发动机的正常工作至关重要。本文着重从汽车环境对功率器件的要求进行探讨，根据喷油阀驱动电流和工作频率的特点，提出采用普通双极功率管并加以动态保护电路，达到既可靠又经济地实现对电磁阀的驱动的目的。
The design and protection of power devices in automotive EFI systems are crucial to the normal operation of the engine. This paper focuses on the automotive environment from the requirements of power devices to explore, according to the injection valve drive current and operating frequency characteristics, the proposed ordinary bipolar power tube and dynamic protection circuit to achieve both reliable and economical to achieve the solenoid valve drive the goal of.