公开(公告)号：US20120195778A1

公开(公告)日：2012-08-02

申请号：US13352626

申请日：2012-01-18

申请人： Tatsuro KOGA ,  Noriya MATSUMOTO ,  Osamu HISHINUMA ,  Shinobu OIKAWA

发明人： Tatsuro KOGA ,  Noriya MATSUMOTO ,  Osamu HISHINUMA ,  Shinobu OIKAWA

IPC分类号： F04B53/00

CPC分类号： F04B1/0408 ,  F04B1/0421

摘要： A gas chamber is placed adjacent to a variable volume chamber of a high pressure pump. The gas chamber includes an inner blocking wall, which borders on the variable volume chamber and contacts fuel in the variable volume chamber, an outer blocking wall, which is opposed to the inner blocking wall, and gas, which fills a space that is defined between the inner blocking wall and the outer blocking wall.

摘要翻译： 气室邻近高压泵的可变容积室放置。 气室包括内部阻塞壁，其与可变容积室相接触并接触可变容积室中的燃料，与阻挡壁相对的外部阻挡壁和填充空间的气体， 内阻塞壁和外阻挡壁。

公开(公告)号：US20110147636A1

公开(公告)日：2011-06-23

申请号：US12974367

申请日：2010-12-21

申请人： Shinobu OIKAWA

发明人： Shinobu OIKAWA

IPC分类号： F16K27/02

CPC分类号： F02M59/102 ,  F02M59/44 ,  F02M63/005 ,  F02M63/0054 ,  F02M2200/04

摘要： A constant residual pressure valve is provided with a valve body, a valve seat, a communication passage, and an orifice upstream of the valve seat. A cylindrical passage is arranged between the orifice and the valve seat in such a manner as to introduce cavitation bubbles toward the valve seat. The cavitation bubbles are generated in the fuel discharged from the orifice. When the cavitation babbles are collapsed, the foreign matters accumulated on the third valve seat 63 and the valve body 69 are removed.

摘要翻译： 恒定的残压阀具有阀体，阀座，连通通道和阀座上游的孔口。 在孔口和阀座之间设置圆柱形通道，以便向阀座引入空化气泡。 在从孔口排出的燃料中产生气蚀气泡。 当空化泡沫破裂时，积聚在第三阀座63和阀体69上的异物被去除。

公开(公告)号：US20100209274A1

公开(公告)日：2010-08-19

申请号：US12706160

申请日：2010-02-16

申请人： Shinobu OIKAWA ,  Hiroatsu Yamada ,  Hiroshi Inoue

发明人： Shinobu OIKAWA ,  Hiroatsu Yamada ,  Hiroshi Inoue

IPC分类号： F04B11/00 ,  F16J3/02

CPC分类号： F04B53/16 ,  F04B37/12 ,  F04B53/004

摘要： In a housing, a damper member is placed in a fluid chamber communicated with a pressurizing chamber, at which a plunger is reciprocated to pressurize fuel, and an opening of the fluid chamber is covered with a cover member. The damper member includes first and second-side diaphragms. A first-side support member is located between the damper member and the cover member and is engaged with a first-side outer peripheral portion of the first-side diaphragm and the cover member. A second-side support member is located between the damper member and the housing and is engaged with a second-side outer peripheral portion of the second-side diaphragm and the housing. The first and second-side support members are urged between the housing and the cover member.

摘要翻译： 在壳体中，阻尼器构件被放置在与加压室连通的流体室中，在该加压室中柱塞往复运动以加压燃料，并且流体室的开口被盖构件覆盖。 阻尼器构件包括第一和第二侧隔膜。 第一侧支撑构件位于阻尼构件和盖构件之间并且与第一侧隔膜的第一侧外周部分和盖构件接合。 第二侧支撑构件位于阻尼构件和壳体之间并且与第二侧隔膜和壳体的第二侧外周部分接合。 第一和第二侧支撑构件被推压在壳体和盖构件之间。

公开(公告)号：US20110315909A1

公开(公告)日：2011-12-29

申请号：US13171917

申请日：2011-06-29

申请人： Shinobu OIKAWA ,  Hirokuni Tomita

发明人： Shinobu OIKAWA ,  Hirokuni Tomita

IPC分类号： F16K27/02

CPC分类号： F16K27/0209 ,  F02M55/025 ,  F02M59/447 ,  F02M63/005 ,  F02M63/0054 ,  F16K15/026 ,  F16K15/028 ,  F16K15/044 ,  F16K27/029 ,  G05D16/0402 ,  G05D16/103

摘要： A constant-residual-pressure valve is disposed in a communication passage connecting a high-pressure fuel passage through which pressurized fuel flows with a low-pressure fuel passage through which the fuel flows toward a high-pressure pump. The constant-residual-pressure valve includes a valve body, a spring, and a spring stopper. The valve body can sit on a valve seat formed in an inner passage. The spring biases the valve body toward the valve seat. The spring stopper has a downstream-orifice of which flow passage area is smaller than that of a passage upstream of the valve seat. Thereby, cavitation between the valve body and the valve seat is less generated.

摘要翻译： 恒压残余压力阀设置在连接高压燃料通道的连通通道中，压力燃料通过该通道与低压燃料通道相连，燃料通过该低压燃料通道流向高压泵。 恒定残压阀包括阀体，弹簧和弹簧止动器。 阀体可以坐在形成在内部通道中的阀座上。 弹簧将阀体偏压到阀座。 弹簧止动件具有下游孔，其流路面积小于阀座上游的通道面积。 因此，阀体和阀座之间的气蚀较少产生。

公开(公告)号：US20110247488A1

公开(公告)日：2011-10-13

申请号：US13082840

申请日：2011-04-08

申请人： Shinobu OIKAWA

发明人： Shinobu OIKAWA

IPC分类号： F01B31/00

CPC分类号： F04B53/08 ,  F02M37/0029 ,  F02M37/0041 ,  F02M37/0047 ,  F02M53/00 ,  F02M59/102 ,  F02M59/367 ,  F02M59/44 ,  F02M63/0265 ,  F04B1/0404 ,  F04B1/0421 ,  F04B1/0452 ,  F04B53/16 ,  F04B53/162

摘要： A high-pressure pump includes a plunger for pressurizing a fuel, a cylinder accommodating the plunger reciprocatably in its axial direction and a pump body. The pump body defines a pressurization chamber, a low-pressure fuel passage hydraulically connecting a fuel inlet and the pressurization chamber, and a discharge passage. The pump body further defines a cylindrical space around the cylinder. The fuel flows into the cylindrical space from the low-pressure fuel passage so as to cool the cylinder. The entire outer surface of the cylinder can be surely cooled.

摘要翻译： 高压泵包括用于对燃料进行加压的柱塞，容纳柱塞在其轴向上可往复运动的缸体和泵体。 泵体限定了加压室，液压连接燃料入口和加压室的低压燃料通道和排出通道。 泵体进一步限定圆柱体周围的圆柱形空间。 燃料从低压燃料通道流入圆柱形空间以冷却气缸。 圆筒的整个外表面可以确实冷却。

公开(公告)号：US20130052064A1

公开(公告)日：2013-02-28

申请号：US13586087

申请日：2012-08-15

申请人： Shinobu OIKAWA ,  Takayuki WATANABE ,  Hiroshi INOUE

发明人： Shinobu OIKAWA ,  Takayuki WATANABE ,  Hiroshi INOUE

IPC分类号： F04B11/00

CPC分类号： F04B53/001 ,  F04B11/0016

摘要： A high-pressure pump has: a plunger; a pump body; a cover member for covering the pump body and forming a fuel chamber; a pulsation damper body constructed of upper and lower diaphragms with their peripheral edge portions joined and for reducing pressure pulsation in the chamber, the upper and lower diaphragms trapping gas having a given pressure between them; an upper support member having an upper ring-shaped part and an upper support body, the upper ring-shaped part being joined to the peripheral edge portion of the upper diaphragm, the upper support body extending from the upper ring-shaped part and abutting on the cover member; and a lower support member having a lower ring-shaped part and a lower support body, the lower ring-shaped part being joined to the peripheral edge portion of the lower diaphragm, the lower support body extending from the lower ring-shaped part and abutting on the pump body.

摘要翻译： 高压泵有：柱塞; 泵体; 用于覆盖所述泵体并形成燃料室的盖构件; 由上下隔膜构成的脉动阻尼器主体，其周缘部分接合并用于减小腔室中的压力脉动，上隔膜和下隔膜在其间捕获具有给定压力的气体; 具有上环形部分和上支撑体的上支撑构件，所述上环形部分连接到上隔膜的周缘部分，上支撑体从上环形部分延伸并邻接 盖构件; 以及具有下环状部和下支撑体的下支撑部件，下环状部与下隔膜的周缘部接合，下支撑体从下环状部延伸并抵接 在泵体上。