公开(公告)号：US06546918B2

公开(公告)日：2003-04-15

申请号：US09922724

申请日：2001-08-07

申请人： Yoshihiko Onishi ,  Kouichi Ojima ,  Hiromichi Tsugami ,  Shigeki Uno ,  Hiroaki Ikeda

发明人： Yoshihiko Onishi ,  Kouichi Ojima ,  Hiromichi Tsugami ,  Shigeki Uno ,  Hiroaki Ikeda

IPC分类号： F02M3704

CPC分类号： F02D41/3845 ,  F02D41/1402 ,  F02D41/1462 ,  F02D2200/0406 ,  F02D2200/0414 ,  F02D2200/0602 ,  F02D2250/31 ,  F02M37/0041 ,  F02M37/0052 ,  F02M37/10 ,  F02M59/366 ,  F02M63/0225 ,  F04B49/24

摘要： A variable delivery type fuel supply apparatus capable of suppressing variation of fuel pressure within a delivery pipe and hence variation of fuel quantity injected through fuel injection valves and simplifying a control method therefor. The apparatus includes an oil relief passage (6) provided between the suction port of a fuel pump (4) and a pressurizing chamber (4e) across a suction valve (4a) of the fuel pump (4), an electromagnetic valve (7) disposed in the oil relief passage (6) and opened for a predetermined time during a discharge stroke of the fuel pump (4) for thereby controlling a discharge quantity of the fuel pump (4), and a control unit (108) for controlling the timing at which the electromagnetic valve (7) is opened. The control unit (108) is so designed as to control open/close operations of the electromagnetic valve (7) such that a time point for starting electrical energization of the electromagnetic valve (7) is fixedly set at a predetermined time point relative to the suction/discharge stroke of the fuel pump (4) while allowing the time point for terminating the electrical energization to be variable, to thereby control the discharge quantity of the fuel pump (4).

公开(公告)号：US06729286B2

公开(公告)日：2004-05-04

申请号：US10118906

申请日：2002-04-10

申请人： Yoshihiko Onishi ,  Takuya Uryu ,  Hiromichi Tsugami

发明人： Yoshihiko Onishi ,  Takuya Uryu ,  Hiromichi Tsugami

IPC分类号： F01L114

CPC分类号： F04B1/0413 ,  F02M59/102 ,  F02M59/366 ,  F02M63/0225 ,  F02M2200/315 ,  F04B1/0426 ,  Y10T137/7834

摘要： A fuel supply apparatus capable of reducing the abrasion of a driving cam and a tappet without increasing the dimensions and weight of the apparatus. This fuel supply apparatus is provided with a tappet which has a pressure receiving surface contacting the driving cam of an engine. The tappet is provided at the part of a outer surface thereof which is in the vicinity of an outer circumference of the pressure receiving surface with a groove adapted to prevent the local concentration of stress on the tappet and having a V-shaped, semicircular or U-shaped cross section.

摘要翻译： 一种燃料供给装置，其能够在不增加装置的尺寸和重量的情况下减少驱动凸轮和挺杆的磨损。 该燃料供给装置设置有具有与发动机的驱动凸轮接触的受压面的挺杆。 挺杆设在其外表面的一部分，该外表面在压力接收表面的外圆周附近具有适于防止在挺杆上的局部应力集中并具有V形，半圆形或U形的凹槽 形截面。

公开(公告)号：US06644287B2

公开(公告)日：2003-11-11

申请号：US10118159

申请日：2002-04-09

申请人： Yoshihiko Onishi ,  Kouichi Ojima ,  Yuta Ichinose

发明人： Yoshihiko Onishi ,  Kouichi Ojima ,  Yuta Ichinose

IPC分类号： F02M3704

CPC分类号： F02M59/44 ,  F02M37/10 ,  F02M55/04 ,  F02M63/0225 ,  F04B1/0452

摘要： There is provided a high pressure fuel supply apparatus including a plunger reciprocating in a sleeve of a high pressure fuel pump so as to form a fuel pressurizing chamber between the plunger and the sleeve, a first plate having a fuel suction port for sucking fuel into the fuel pressurizing chamber and a fuel discharge port for discharging the fuel from the fuel pressurizing chamber, and a suction valve provided in the fuel suction port, the first plate, the suction valve and a flange portion of the sleeve being held between a casing and an end surface of a spring guide constituting the high pressure fuel pump.

公开(公告)号：US07677479B2

公开(公告)日：2010-03-16

申请号：US12111473

申请日：2008-04-29

申请人： Kazunori Kitagawa ,  Kouichi Ojima ,  Yoshihiko Onishi

发明人： Kazunori Kitagawa ,  Kouichi Ojima ,  Yoshihiko Onishi

IPC分类号： F02M51/06

CPC分类号： F02M51/0653 ,  F02M61/168 ,  Y10T29/49314 ,  Y10T29/49405

摘要： When a fuel injection valve is mounted on an engine, a distance between a core and an armature during non-energization of a coil can be prevented from becoming narrow. The coil is arranged inside the core, and a body is fixedly secured at its one end to an end of the core. A housing is arranged outside the coil with its one end abutting a cylinder head. A cap is arranged at the other end of the housing, and abuts at its side opposite to the housing with a fastening unit. The armature is arranged for reciprocation inside the body, and is magnetically attracted to the magnetized core. A gap is formed between the housing and the body, with the cap and the core being fixed to each other, and upon mounting the valve on the engine, the housing and the fastening unit abut the cylinder head and the cap, respectively.

摘要翻译： 当燃料喷射阀安装在发动机上时，可以防止在线圈不通电期间铁芯和电枢之间的距离变窄。 线圈布置在芯部内部，并且主体在其一端固定地固定到芯的端部。 线圈外侧设有一个壳体，其一端邻接气缸盖。 盖子设置在壳体的另一端，并且用紧固单元与壳体的相对侧邻接。 电枢被布置用于在体内往复运动，并被磁力吸引到磁化的磁芯。 在壳体和主体之间形成间隙，其中盖和芯彼此固定，并且在将阀安装在发动机上时，壳体和紧固单元分别抵靠气缸盖和盖。

公开(公告)号：US06871836B1

公开(公告)日：2005-03-29

申请号：US10111195

申请日：2000-08-24

申请人： Yoshihiko Onishi ,  Kouichi Ojima

发明人： Yoshihiko Onishi ,  Kouichi Ojima

IPC分类号： F02M55/04 ,  F02M59/36 ,  F02M59/46 ,  F02M63/02 ,  F04B49/24 ,  F16K31/06 ,  F16K31/02

CPC分类号： F16K31/0658 ,  F02M55/04 ,  F02M59/366 ,  F02M59/466 ,  F02M63/0225 ,  F04B49/24

摘要： The object of the present invention is to provide an electromagnetic valve for a variable discharge fuel supply apparatus with improved relief property and high-responsiveness, a small electromagnetic valve, reduced electric current consumption and increased responsiveness, wherein the valve seat has a valve seating surface present in a flat surface facing the direction of movement of the valve at substantially right angle, and the valve is provided with a flow path formed within the valve and a substantially ring-shaped flat landing surface that encircles the flow path within the valve and closes the flow path by coming into contact with the valve seating surface. The electromagnetic valve may be made to cause the outside of the valve to serve as a high pressure side and the flow path within the valve, as a low pressure side, and to cause both the landing surface of the valve and the valve seating surface of the valve seat to be in ring-shaped so that the valve and the valve seat come into contact only through the space between the outer boundary of the landing surface of the valve and the inner boundary of the valve seating surface of the valve seat. Further, the flow path may be formed in a place where it passes the vicinity of said electromagnetic solenoids at the downstream section of the valve. In addition, the flow path within the valve may extend piercing the valve to reach as far as the vicinity of the solenoid coils, and may be connected to the fuel flow path that is formed in the space between the valve outer boundary and the valve holder inner boundary and linked to the low pressure side, and the valve seat having the valve seating surface may be a part formed separately from the valve holder instead of the one united to the valve holder.

摘要翻译： 本发明的目的是提供一种具有改进的释放特性和高响应性的可变排放燃料供应装置的电磁阀，小的电磁阀，降低的电流消耗和增加的响应性，其中阀座具有阀座表面 存在于面向阀的运动方向基本上成直角的平坦表面中，并且阀设置有形成在阀内的流路和围绕阀内的流动通道并闭合的大致环形的平坦着陆面 通过与阀座表面接触的流动路径。 可以使电磁阀使得阀的外部作为高压侧和阀内的流动路径作为低压侧，并且使阀和阀座面的两端 阀座为环状，使得阀和阀座仅通过阀的着陆面的外边界与阀座的阀座表面的内边界之间的空间接触。 此外，流路可以形成在其通过阀的下游部分处的所述电磁螺线管附近的位置。 此外，阀内的流路可以延伸穿刺阀到达螺线管线圈附近，并且可以连接到形成在阀外边界和阀保持器之间的空间中的燃料流动路径 内部边界并连接到低压侧，并且具有阀座表面的阀座可以是与阀保持器分开形成的部分，而不是与阀保持器结合的部分。

公开(公告)号：US06213094B1

公开(公告)日：2001-04-10

申请号：US09480664

申请日：2000-01-11

申请人： Yoshihiko Onishi ,  Kouichi Ojima ,  Takemi Arima ,  Hideki Morikaku

发明人： Yoshihiko Onishi ,  Kouichi Ojima ,  Takemi Arima ,  Hideki Morikaku

IPC分类号： F02M3700

CPC分类号： F04B53/1037 ,  F02M59/462 ,  F02M59/464 ,  F02M63/0225 ,  F04B11/0016 ,  F04B11/0091

摘要： In a high-pressure fuel pump, a back-pressure chamber connected to a high-pressure fuel discharge passage is formed in a casing facing a central portion of a first plate.

摘要翻译： 在高压燃料泵中，与面对第一板的中心部的壳体形成有与高压燃料排出路连通的背压室。

公开(公告)号：US06575718B2

公开(公告)日：2003-06-10

申请号：US09941772

申请日：2001-08-30

申请人： Yoshihiko Onishi ,  Kouichi Ojima

发明人： Yoshihiko Onishi ,  Kouichi Ojima

IPC分类号： F04B3910

CPC分类号： F02M55/04 ,  F02M63/0225 ,  F02M2200/315 ,  F04B53/1047

摘要： A high pressure fuel supply apparatus includes a cylinder defining a compression chamber, a piston supported for sliding movement in the cylinder, and a valve communicating with the compression chamber. The valve includes a valve seat having a valve hole formed therein and a reed movable between an open and a closed position to open and close the valve hole. The reed has a head with an outer periphery in surface contact with the valve seat when the reed is in its closed position, and a bulge surrounded by the outer periphery and extending away from the valve hole and disposed on the valve hole when the 0reed is in its closed position.

摘要翻译： 高压燃料供给装置包括限定压缩室的气缸，支撑在气缸中滑动的活塞以及与压缩室连通的阀。 所述阀包括阀座，所述阀座具有形成在其中的阀孔，以及可在打开和关闭所述阀孔的打开和关闭位置之间移动的簧片。 当簧片处于其关闭位置时，簧片具有与阀座表面接触的外周的头部，以及当外圈周围并由阀孔延伸并且在阀孔处延伸时设置在阀孔上的凸起 处于关闭状态。

公开(公告)号：US06871578B1

公开(公告)日：2005-03-29

申请号：US10111228

申请日：2000-08-24

申请人： Yoshihiko Onishi ,  Kouichi Ojima

发明人： Yoshihiko Onishi ,  Kouichi Ojima

IPC分类号： F02M59/10 ,  F02M59/44 ,  F02M59/46 ,  F02M63/00 ,  F02M63/02 ,  F04B53/04 ,  F04B53/16

CPC分类号： F04B53/04 ,  F02M59/102 ,  F02M59/44 ,  F02M59/442 ,  F02M59/466 ,  F02M63/0225 ,  F02M2200/40 ,  F04B53/16

摘要： The object of the present invention is to provide a high-pressure fuel supply apparatus, in which the durability of the fuel sealing section is improved and additionally the evaluation time is reduced. The high-pressure fuel supply apparatus comprises a piston having a plunger supported slidably within a cylinder and a tappet, a casing for preventing the fuel leaking out of the space between the cylinder and the piston from leaking outside by surrounding substantially the cylinder and the piston, and a sealing means for sealing the space between the casing and the piston, wherein the sealing means is fastened to the casing and brought into a slidable contact with the tappet of the piston. The sealing means may either be brought into slidingly contact with the cylindrical surface of the tappet that is fitted in the plunger or be brought into contact with a columnar tappet that simply abuts against one end of the plunger and is supported by the casing in a way in which it can move axially but it does not move radially. The tappet may be made of ceramics.

摘要翻译： 本发明的目的是提供一种高压燃料供给装置，其中燃料密封部分的耐久性得到改善，另外评估时间减少。 高压燃料供给装置包括：活塞，其具有可滑动地支撑在气缸内的柱塞和挺杆;壳体，用于防止燃料从气缸和活塞之间的空间泄漏，以便通过围绕气缸和活塞 以及用于密封壳体和活塞之间的空间的密封装置，其中密封装置紧固到壳体并且与活塞的挺杆可滑动接触。 密封装置可以与装配在柱塞中的挺杆的圆柱形表面滑动接触，或者与柱塞挺杆接触，柱形挺杆仅靠在柱塞的一端并以一种方式被壳体支撑 其中它可以轴向移动，但其不会径向移动。 挺杆可以由陶瓷制成。

公开(公告)号：US06637410B2

公开(公告)日：2003-10-28

申请号：US10114032

申请日：2002-04-03

申请人： Yoshihiko Onishi ,  Kouichi Ojima ,  Yuta Ichinose

发明人： Yoshihiko Onishi ,  Kouichi Ojima ,  Yuta Ichinose

IPC分类号： F02M3704

CPC分类号： F02M55/04 ,  F02M59/366 ,  F02M59/462 ,  F02M59/466 ,  F02M63/0225 ,  F02M2200/315 ,  Y10T137/7925 ,  Y10T137/7938

摘要： A high pressure fuel supply apparatus is constituted by a plunger reciprocating in a sleeve of a high pressure fuel pump so as to form a fuel pressurizing chamber between the plunger and the sleeve, a suction valve provided in a fuel suction port for sucking fuel into the fuel pressurizing chamber, and a discharge valve provided in a fuel discharge port for discharging fuel from the fuel pressurizing chamber into a high pressure fuel discharge passageway communicating with an internal combustion engine, the discharge valve reciprocating axially so as to perform an open/close operation, wherein the high pressure fuel supply apparatus further comprises a holder for regulating an axial reciprocating movement of the discharge valve in the open/close operation within a predetermined range.

摘要翻译： 高压燃料供给装置由在高压燃料泵的套筒中往复运动的柱塞构成，以在柱塞和套筒之间形成燃料加压室，设置在燃料吸入口中的吸入阀，用于将燃料吸入 燃料加压室和设置在燃料排出口中的排出阀，用于将燃料从燃料加压室排出到与内燃机连通的高压燃料排放通道中，排出阀轴向往复运动以进行打开/关闭操作 其特征在于，所述高压燃料供给装置还包括保持器，用于在所述开闭动作中将所述排出阀的轴向往复运动调节在预定范围内。

公开(公告)号：US06546917B2

公开(公告)日：2003-04-15

申请号：US09844278

申请日：2001-04-30

申请人： Yoshihiko Onishi ,  Kouichi Ojima

发明人： Yoshihiko Onishi ,  Kouichi Ojima

IPC分类号： F02M3704

CPC分类号： F02M59/366 ,  F02M55/04 ,  F02M59/102 ,  F02M63/0225 ,  F02M2200/04 ,  F04B1/0413 ,  F04B9/042

摘要： A variable delivery fuel supply device capable of improving linearity of discharge characteristics with respect to a rotational angle of a cam and reducing abrasion of the cam. The variable delivery fuel supply device comprises: fuel injection valves 1a to 1d respectively for injecting a fuel to cylinders of an internal combustion engine; a delivery pipe 2 for supplying a pressurized fuel to said fuel injection valves 1a to 1d; and a fuel pump 3 for taking a fuel from a fuel intake passage 24 through an intake valve 25 into a pressurization chamber 17 during an intake stroke, for pressurizing the fuel and for discharging the pressurized fuel through a discharge valve 26 to the delivery pipe 2 during a discharge stroke by reciprocating movement of a plunger 14 in each cylinder 13 from a bottom dead point to a top dead point; wherein the pressure in the pressurization chamber 17 is relieved at a position set to a predetermined value before reaching the top dead point in the course of the discharge stroke in which the plunger 14 of the fuel pump 3 moves from the bottom dead point to the top dead point.