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1. 发明授权

US5803369A Accumulator fuel injection device 失效
标题翻译：蓄能器燃油喷射装置
公开(公告)号：US5803369A
公开(公告)日：1998-09-08
申请号：US686774
申请日：1996-07-26
申请人： Tatsuya Toyao , Shuichi Matsumoto , Masashi Murakami , Yukihisa Arakoma , Masatoshi Kuroyanagi
发明人： Tatsuya Toyao , Shuichi Matsumoto , Masashi Murakami , Yukihisa Arakoma , Masatoshi Kuroyanagi
IPC分类号： F02M47/00 , F02M47/02 , F02M59/46 , F02M51/02
CPC分类号： F02M47/027 , F02M63/0017 , F02M63/0036 , F02M63/0073
摘要： In an accumulator fuel injection device, a valve member of a solenoid valve includes a shaft and a spherical member. The spherical member is slidably supported at the tip portion of the shaft. The spherical member is prevented from falling off by caulking the tip of the shaft. A flat plate working as a valve seat for the spherical member is provided so that the spherical member allows communication between a pressure control chamber and a low-pressure side when separated from the flat plate, while prohibiting the communication therebetween when seated on the flat plate. On the other hand, the flat plate is formed with fuel relief passages in a tight contact region between the flat plate and the spherical member. The fuel relief passages communicate with the low-pressure side even when the spherical member is seated on the flat plate. Thus, a hydraulic force applied to the spherical member in a solenoid valve opening direction when the spherical member is seated on the flat plate, is rendered smaller. Accordingly, a biasing force of a spring urging the valve member in a solenoid valve closing direction can be set smaller, and thus, a magnetic force of the solenoid valve for lifting the valve member against the biasing force of the spring can also be set smaller. The fuel relief passages may be provided on the spherical member.
摘要翻译：在蓄能器燃料喷射装置中，电磁阀的阀构件包括轴和球形构件。球形构件可滑动地支撑在轴的尖端部分。通过铆接轴的尖端防止球形部件脱落。设置作为球形部件的阀座工作的平板，使得当与平板分离时，球形部件允许压力控制室和低压侧之间的连通，同时在坐在平板上时禁止其间的连通。另一方面，平板在平板与球形构件之间的紧密接触区域中形成有燃料排出通道。即使当球形构件安置在平板上时，燃料消除通道与低压侧连通。因此，当球形构件安置在平板上时，以电磁阀打开方向施加到球形构件的液压力变小。因此，可以将推动阀构件的电磁阀关闭方向的弹簧的偏置力设定得较小，因此也可以将抵抗弹簧的偏压力提升阀构件的电磁阀的磁力设定得较小。燃料消除通道可以设置在球形构件上。

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