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1. 发明专利

JP2512066B2 失效
公开(公告)号：JP2512066B2
公开(公告)日：1996-07-03
申请号：JP6334288
申请日：1988-03-18
申请人： HITACHI LTD
发明人： TACHIKAWA MAKOTO , AZUSAZAWA NOBORU , HASHIMOTO TADAHIKO , IGARI KUNYUKI , ISHIKAWA TOORU
IPC分类号： G02F1/13 , G02F1/133 , G09G3/02 , G09G3/18 , G09G3/20

2. 发明专利

JPS59190467A Distributing type fuel injection pump 失效
标题翻译：分配式燃油喷射泵
公开(公告)号：JPS59190467A
公开(公告)日：1984-10-29
申请号：JP6360183
申请日：1983-04-13
申请人： Hitachi Ltd
发明人： NAKAMURA ICHIROU , SHIYUDOU KATSUHARU , ISHIKAWA TOORU
IPC分类号： F02M41/14
CPC分类号： F02M41/1405
摘要： PURPOSE:To prevent secondary injection and as well ununiform injection to obtain stable fuel injection, by providing means for reducing the residual fuel pressure, in a discharge passage. CONSTITUTION:A communication groove 23 formed in a rotor 4 prevents a pressure rise causing a secondary injection. The groove 23 is communicated with the supply side of a passage 27 through a barrel 3. Therefor, the communication groove 23 is communicated with a passage 22 soon after the discharge of fuel from a pressure chamber 12 is completed and the communication between a passage 18 and the passage 22 is blocked, and the residual pressure in the passage 22 is communicated with the passage 27. Accordingly, the pressure in the passage 22 is decreased and then maintained at a constant pressure. The range of the groove 23 may be determined in consideration with the dimensions of the passages 18, 22, but the range may be normally set 10-25 deg..
摘要翻译：目的：为了防止二次注射以及不均匀的注射，以获得稳定的燃料喷射，通过在排放通道中提供减少残余燃料压力的方法。构成：形成在转子4中的连通槽23防止引起二次注射的压力升高。槽23通过筒体3与通道27的供给侧连通。因此，在从压力室12排出的燃料完成之后，连通槽23与通道22连通，并且通道18 并且通道22被阻塞，并且通道22中的残余压力与通道27连通。因此，通道22中的压力降低，然后保持在恒定压力。槽23的范围可以考虑通道18,22的尺寸来确定，但是该范围通常可以设定为10-25度。

3. 发明专利

JPS60128970A FUEL INJECTION DEVICE 失效
公开(公告)号：JPS60128970A
公开(公告)日：1985-07-10
申请号：JP23420983
申请日：1983-12-14
申请人： HITACHI LTD
发明人： NAKAMURA ICHIROU , SHIYUDOU KATSUHARU , ISHIKAWA TOORU
IPC分类号： F02M51/00 , F02M55/00 , F02M63/00 , F02M69/00
摘要： PURPOSE:To improve the control accuracy and performance of fuel injection pump by constructing a valve for regulating the pressure of fuel to be fed from pressure fuel feed mechanism with pressure regulating section and solenoid valve section while transmitting a command to be fed to solenoid valve section fluidly to pressure regulating section thus performing control. CONSTITUTION:Upon fuel supply through feed port 15 of pressure regulating valve 3 into oil chamber 18, piston 13 in pressure regulating section is moved to the right to flow fuel through restrictor 19 into oil chamber 17. Upon increase of pressure in oil chamber 18, a discharge port 16 will open to discharge fuel into fuel tank 1. Consequently, pressure in oil chamber 18 will drop to move the piston 13 to the left thus to close the discharge port 16 and to increase the pressure in oil chamber 18. While upon increase of pressure in oil chamber 23, the piston 13 will move to the right thus to open the discharge port 25 and to discharge fuel into fuel tank 1. On the contrary, upon drop of pressure in oil chamber 23, the piston 20 will move to the left thus to stop fuel supply from the restrictor 19 and to increase the pressure.

4. 发明专利

JPH0550638B2 失效
公开(公告)号：JPH0550638B2
公开(公告)日：1993-07-29
申请号：JP27238386
申请日：1986-11-15
申请人： HITACHI LTD
发明人： ISHIKAWA TOORU , KAMITSUMA YASUO
IPC分类号： F16K31/06 , C25D5/14 , F02M51/06 , F02M51/08

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