公开(公告)号：US5613476A

公开(公告)日：1997-03-25

申请号：US301429

申请日：1994-09-09

申请人： Kiyotoshi Oi ,  Atsushige Kobayashi ,  Kazushi Nakashima ,  Yasushi Kawano ,  Hideki Kaga

发明人： Kiyotoshi Oi ,  Atsushige Kobayashi ,  Kazushi Nakashima ,  Yasushi Kawano ,  Hideki Kaga

IPC分类号： B01D35/027 ,  F02M37/10 ,  F02M37/22 ,  F02M37/04

CPC分类号： F02M37/10 ,  B01D35/0273 ,  F02M2037/228 ,  Y10T137/2574 ,  Y10T137/86228

摘要： An in-tank type fuel pump which can easily be installed and reduces the vibration caused by the fuel pump. The fuel pumped up by a pump part passes through a filter to have foreign matter contained therein removed. Then, the fuel flows from a fuel passage, through an opening part in a cap, into a recessed part and a second fuel passage. The fuel that has flowed into the second fuel passage lifts a check valve and flows into the recessed part. Then, the fuel flows through a third fuel passage to a discharge pipe, and then is guided to the outside of the fuel tank. A ball moves within a large-diameter passage according to the fuel pressure to regulate the fuel pressure required for fuel injection. When the fuel pumping is ceased, the fuel pressure falls to 0, and therefore the ball is forced to contact a valve seat by the spring force of a compression coil spring. Then, the head part of the check valve is forced to contact a valve seat to block the fuel passage. As a result, the residual fuel pressure can be maintained downstream from the recessed part.

摘要翻译： 一种罐式燃油泵，可轻松安装，减少燃油泵引起的振动。 由泵部件抽出的燃料通过过滤器以除去其中包含的异物。 然后，燃料从燃料通路通过盖中的开口部流入凹部和第二燃料通路。 已经流入第二燃料通道的燃料提升止回阀并流入凹入部分。 然后，燃料通过第三燃料通道流到排放管，然后被引导到燃料箱的外部。 根据燃料压力，球在大直径通道内移动，以调节燃料喷射所需的燃料压力。 当燃料泵送停止时，燃料压力下降到0，因此球被压缩螺旋弹簧的弹簧力迫使阀座接触阀座。 然后，止回阀的头部被迫接触阀座以堵塞燃料通道。 结果，残留燃料压力可以保持在凹部的下游。

公开(公告)号：US4798522A

公开(公告)日：1989-01-17

申请号：US938145

申请日：1986-12-04

申请人： Hideki Kaga ,  Hisanori Kobayashi

发明人： Hideki Kaga ,  Hisanori Kobayashi

IPC分类号： F02M37/00 ,  F02M37/10 ,  F04B39/12

CPC分类号： F02M37/10 ,  Y10T137/86091

摘要： A joint structure has a fuel supply pump disposed within a fuel tank in a vertical posture, and a fuel outlet pipe projecting from the upper end surface of the fuel supply pump. A cylindrical retaining member is fitted around the fuel outlet pipe and an O ring is also fitted around the fuel outlet pipe in contact with the upper end surface of the cylindrical retaining member. The inner surface of the O ring is in close contact with the outer surface of the outlet pipe. A cylindrical joint member penetrates the upper wall of the fuel tank and an upper opening of the joint member is connected to one end of a fuel supply pipe leading to an engine. The fuel outlet pipe is pressed into a lower opening of the joint member. At this time, the outer peripheral surface of the O ring retained by the cylindrical retaining member in contact therewith, comes in close contact with an inner surface of the joint member.

摘要翻译： 接头结构具有以垂直姿势设置在燃料箱内的燃料供给泵和从燃料供给泵的上端面突出的燃料出口管。 在燃料出口管周围安装有圆柱形保持构件，并且O形圈也安装在与圆柱形保持构件的上端表面接触的燃料出口管周围。 O形环的内表面与出口管的外表面紧密接触。 圆柱形接头构件穿透燃料箱的上壁，并且接头构件的上开口连接到通向发动机的燃料供给管的一端。 燃料出口管被压入接头构件的下开口。 此时，由与圆筒形保持构件保持接触的O形环的外周面与接合构件的内表面紧密接触。