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1. 发明授权

US4345564A Fuel injection valve drive system 失效
标题翻译：燃油喷射阀驱动系统
公开(公告)号：US4345564A
公开(公告)日：1982-08-24
申请号：US107832
申请日：1979-12-28
申请人： Yoshihisa Kawamura , Kesao Matsuto , Masaaki Saito
发明人： Yoshihisa Kawamura , Kesao Matsuto , Masaaki Saito
IPC分类号： F02D41/20 , F02D5/02 , H01F7/18
CPC分类号： F02D41/20 , F02D2041/2017 , F02D41/187
摘要： A fuel injection valve drive system is disclosed for use in an internal combustion engine including at least one solenoid operated fuel injection valve. The system comprises a first pulse generator for providing, in synchronism with rotation of the engine, a first pulse signal having a constant pulse width, a second pulse generator for providing a second pulse signal of pulse width dependent upon the amount of air introduced to the engine, first switch means responsive to a first pulse signal for allowing small current to flow through the solenoid coil of the fuel injection valve so as not to open the fuel injection valve, and second switch means responsive to a second pulse signal for allowing large current to flow through the solenoid coil so as to open the fuel injection valve. Means are provided for causing the second pulse generator to generate a second pulse signal a time after the first pulse generator generates a first pulse signal.
摘要翻译：公开了一种用于包括至少一个螺线管操作燃料喷射阀的内燃机中的燃料喷射阀驱动系统。该系统包括：第一脉冲发生器，用于与发动机的旋转同步地提供具有恒定脉冲宽度的第一脉冲信号;第二脉冲发生器，用于提供脉冲宽度的第二脉冲信号，取决于引入到发动机，第一开关装置响应于第一脉冲信号，以允许小电流流过燃料喷射阀的螺线管线圈，以便不打开燃料喷射阀，第二开关装置响应第二脉冲信号以允许大电流流过电磁线圈以打开燃料喷射阀。提供了用于使第二脉冲发生器在第一脉冲发生器产生第一脉冲信号之后的时间产生第二脉冲信号的装置。

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