公开(公告)号：US20060228239A1

公开(公告)日：2006-10-12

申请号：US11409062

申请日：2006-04-24

申请人： Satoshi Usui ,  Hiroyuki Yamada ,  Toru Onose ,  Atsuji Saito ,  Masami Abe ,  Masayoshi Kotaki ,  Hiroshi Odakura

发明人： Satoshi Usui ,  Hiroyuki Yamada ,  Toru Onose ,  Atsuji Saito ,  Masami Abe ,  Masayoshi Kotaki ,  Hiroshi Odakura

IPC分类号： F04B19/00

CPC分类号： F02M59/102 ,  F02M59/442 ,  F02M2200/16 ,  F04B53/04

摘要： A high pressure fuel pump for an internal combustion engine having a cylinder, a plunger slidably fitted in the cylinder and a seal mechanism for blocking fuel leakage from an end of a sliding portion between the cylinder and the plunger and also for preventing an lubricant for a driving mechanism of the plunger from entering into the cylinder from the end of the sliding portion of the cylinder and the plunger. A holder surrounding the end of the sliding portion of the cylinder and the plunger is provided. The seal mechanism comprises two mutually independent seal devices mounted with a specific spacing in a longitudinal direction from the end of the sliding portion of the cylinder and the plunger along a circumference of the plunger. The two seal devices are held on the circumference of the plunger by the holder surrounding the end of the sliding portion of the cylinder and the plunger while keeping the specific spacing.

公开(公告)号：US10422330B2

公开(公告)日：2019-09-24

申请号：US14360778

申请日：2011-11-30

申请人： Shingo Tamura ,  Atsuji Saito ,  Satoshi Usui ,  Masahiko Hayatani

发明人： Shingo Tamura ,  Atsuji Saito ,  Satoshi Usui ,  Masahiko Hayatani

IPC分类号： F04B39/00 ,  F04B1/04 ,  F04B53/16 ,  F02M59/44 ,  F02M63/00 ,  F02M59/36

摘要： High pressure fuel pump includes a cylinder which is fitted in a concave portion formed in a pump housing and which defines a compression chamber of the pump and a plunger which pressurizes, by sliding against the cylinder, the fluid in the compression chamber. It is structured such that the fluid sucked into the compression chamber by reciprocating motion of the plunger is pressurized and is then discharged from the compression chamber. The cylinder is formed of a cylindrical member which has a ceiling portion and in which the compression chamber is partitionedly formed. A fuel suction path formed in the pump housing reaches the compression chamber through the cylinder and a fuel discharge path formed in the pump housing is connected to the compression chamber through the cylinder. The cylinder is pressed against the pump body by a fuel pressurizing force applied to the cylinder.

公开(公告)号：US09624916B2

公开(公告)日：2017-04-18

申请号：US14238685

申请日：2012-08-07

申请人： Atsuji Saito

发明人： Atsuji Saito

IPC分类号： F04B11/00 ,  F02M55/04 ,  F02M59/44 ,  B23K26/20 ,  F02M21/02

CPC分类号： F02M55/04 ,  B23K26/20 ,  F02M21/0245 ,  F02M59/44 ,  F02M59/48 ,  F02M2200/8084 ,  F04B11/00 ,  F04B11/0033 ,  Y02T10/32

摘要： The damper mechanism used for a high-pressure fuel supply pump system is configured so that an outer circumferential surface of a cover in regard to the thickness direction of the base material of the cover engages with the inner circumference of an open end part of a bottomed tubular concave part formed in a damper housing or in a pump housing of the high-pressure fuel supply pump. The total height of the damper as a low-pressure pulsation reducing mechanism can be reduced and the dimensions of the damper in the radial directions can also be reduced. In cases where the damper mechanism is formed integrally with the high-pressure fuel supply pump, the total height of the high-pressure fuel supply pump can be reduced and the dimensions of the damper part in the radial directions can also be reduced.

公开(公告)号：US07744353B2

公开(公告)日：2010-06-29

申请号：US10250488

申请日：2001-01-05

申请人： Hiroyuki Yamada ,  Atsuji Saito ,  Masayoshi Kotaki ,  Hiroshi Odakura ,  Masami Abe

发明人： Hiroyuki Yamada ,  Atsuji Saito ,  Masayoshi Kotaki ,  Hiroshi Odakura ,  Masami Abe

IPC分类号： F04B1/04 ,  F04B27/04

CPC分类号： F02M59/102 ,  F02M59/366 ,  F02M59/44 ,  F02M59/442 ,  F02M59/445 ,  F02M59/462 ,  F02M59/48 ,  F02M59/485 ,  F02M63/0001 ,  F02M2200/04 ,  F04B49/243 ,  F04B53/04 ,  F04B53/168 ,  F04B53/22

摘要： A fluid pump has a cylinder supporting a plunger and a pump housing formed with dissimilar metals. A pressing mechanism presses the cylinder and the pump housing relative to each other so that a pressurizing chamber is sealed through a pressing surface between the pump housing and the cylinder. The number of seal points can be reduce, and a reduction in reliability can be eliminated while realizing a reduction in weight of the pump housing and a reduction in cost due to increase in cutting capability, by using a soft material such as an aluminum alloy for the pump housing.

摘要翻译： 流体泵具有支撑柱塞的气缸和形成有不同金属的泵壳体。 压力机构相对于彼此推压气缸和泵壳体，使得加压室通过泵壳体和气缸之间的按压表面被密封。 密封点的数量可以减少，并且通过使用诸如铝合金的软材料来实现泵外壳的重量的减轻和由于切割能力的增加而降低成本，可以消除可靠性的降低 泵壳。

公开(公告)号：US07665976B2

公开(公告)日：2010-02-23

申请号：US11409062

申请日：2006-04-24

申请人： Satoshi Usui ,  Hiroyuki Yamada ,  Toru Onose ,  Atsuji Saito ,  Masami Abe ,  Masayoshi Kotaki ,  Hiroshi Odakura

发明人： Satoshi Usui ,  Hiroyuki Yamada ,  Toru Onose ,  Atsuji Saito ,  Masami Abe ,  Masayoshi Kotaki ,  Hiroshi Odakura

IPC分类号： F04B19/00 ,  F16J1/10 ,  F01B9/00

CPC分类号： F02M59/102 ,  F02M59/442 ,  F02M2200/16 ,  F04B53/04

摘要： A high pressure fuel pump for an internal combustion engine having a cylinder, a plunger slidably fitted in the cylinder and a seal mechanism for blocking fuel leakage from an end of a sliding portion between the cylinder and the plunger and also for preventing an lubricant for a driving mechanism of the plunger from entering into the cylinder from the end of the sliding portion of the cylinder and the plunger. A holder surrounding the end of the sliding portion of the cylinder and the plunger is provided. The seal mechanism comprises two mutually independent seal devices mounted with a specific spacing in a longitudinal direction from the end of the sliding portion of the cylinder and the plunger along a circumference of the plunger. The two seal devices are held on the circumference of the plunger by the holder surrounding the end of the sliding portion of the cylinder and the plunger while keeping the specific spacing.

摘要翻译： 一种用于内燃机的高压燃料泵，其具有气缸，可滑动地装配在气缸中的柱塞和用于阻挡燃料从气缸和柱塞之间的滑动部分的端部泄漏的密封机构，并且还用于防止润滑剂 柱塞的驱动机构从气缸和柱塞的滑动部分的端部进入气缸。 提供围绕气缸和柱塞的滑动部分的端部的保持器。 密封机构包括两个相互独立的密封装置，其沿从柱塞的滑动部分的端部沿柱塞的圆周方向在长度方向上以特定的间隔安装。 两个密封装置通过保持器围绕气缸和柱塞的滑动部分的端部保持在柱塞的圆周上，同时保持特定间隔。

公开(公告)号：US06543424B1

公开(公告)日：2003-04-08

申请号：US09637679

申请日：2000-08-14

申请人： Shizuka Yamaguchi ,  Noboru Baba ,  Katsuyoshi Terakado ,  Arata Kagiyama ,  Hideki Machimura ,  Yukio Takahashi ,  Yoshinobu Ono ,  Kazuo Ojima ,  Masayoshi Kotaki ,  Hiroyuki Yamada ,  Atsuji Saito

发明人： Shizuka Yamaguchi ,  Noboru Baba ,  Katsuyoshi Terakado ,  Arata Kagiyama ,  Hideki Machimura ,  Yukio Takahashi ,  Yoshinobu Ono ,  Kazuo Ojima ,  Masayoshi Kotaki ,  Hiroyuki Yamada ,  Atsuji Saito

IPC分类号： F02M5944

CPC分类号： C23C28/044 ,  C23C8/80 ,  C23C28/048 ,  F02B2075/125 ,  F02M59/445 ,  F02M63/0225 ,  F04B1/122 ,  F04B1/141 ,  F04B53/14 ,  F05C2203/083 ,  F05C2253/12 ,  Y02T10/123

摘要： In a fuel pump pressurizing fuel and supplying the fuel to a fuel injection valve of a vehicle engine, a hardened layer of at least one selected from a nitride layer, a carburated and quenched layer and a carbonitrided layer, and a metal compound layer, on a surface of the hardened layer, higher in corrosion resistance than the hardened layer are formed on one of slide surfaces contacting each other and sliding in fuel.

摘要翻译： 在燃料泵中，对燃料加压并将燃料供给车辆发动机的燃料喷射阀，将选自氮化物层，碳化淬火层和碳氮共渗层中的至少一种的硬化层和金属化合物层， 在彼此接触并在燃料中滑动的一个滑动表面上形成硬化层的表面，其耐腐蚀性高于硬化层。

公开(公告)号：US06505608B2

公开(公告)日：2003-01-14

申请号：US09812082

申请日：2001-03-20

申请人： Kenji Hiraku ,  Kenichiro Tokuo ,  Tadahiko Nogami ,  Kunihiko Takao ,  Hiroyuki Yamada ,  Yukio Takahashi ,  Atsuji Saito

发明人： Kenji Hiraku ,  Kenichiro Tokuo ,  Tadahiko Nogami ,  Kunihiko Takao ,  Hiroyuki Yamada ,  Yukio Takahashi ,  Atsuji Saito

IPC分类号： F02M3704

CPC分类号： F02D41/3845 ,  F02D2041/3881 ,  F02D2041/389 ,  F02D2200/0602 ,  F02D2250/14 ,  F02D2250/31 ,  F02M55/025 ,  F02M59/367 ,  F02M63/0295 ,  F02M69/465 ,  F02M2200/04 ,  F02M2200/31 ,  F04B49/243

摘要： A fuel supply system for a direct injection engine which has a variable capacity single cylinder plunger pump and two fuel rails. Offices are disposed at the upstream side inlets of both fuel rails, respectively. At the opposite sides to the inlet sides, the fuel rails are interconnected with each other by a connecting pipe. Using this fuel supply system, it is possible to increase a characterisitic frquency of the fuel columns, and to stabilize, suppress, and smooth out pressure pulsation in the fuel rails, thereby reducing uneven fuel injections into the cylinders. The system may have a cam which drives a plunger of a high pressure fuel pump to reciprocate once for every two combustions in two engine cylinders.

摘要翻译： 一种用于直喷发动机的燃料供应系统，其具有可变容量的单缸柱塞泵和两个燃料轨。 分别设置在两个燃料导轨的上游侧入口处。 在入口侧的相对侧，燃料导轨通过连接管相互连接。 利用这种燃料供给系统，能够提高燃料柱的特性，并且稳定化，抑制和平滑燃料轨中的压力脉动，从而减少对气缸的不均匀燃料喷射。 该系统可以具有驱动高压燃料泵的柱塞的凸轮，以在两个发动机气缸中的每两次燃烧中往复运动一次。

公开(公告)号：US20140314601A1

公开(公告)日：2014-10-23

申请号：US14360778

申请日：2011-11-30

申请人： Shingo Tamura ,  Atsuji Saito ,  Satoshi Usui ,  Masahiko Hayatani

发明人： Shingo Tamura ,  Atsuji Saito ,  Satoshi Usui ,  Masahiko Hayatani

IPC分类号： F04B39/00

摘要： High pressure fuel pump includes a cylinder which is fitted in a concave portion formed in a pump housing and which defines a compression chamber of the pump and a plunger which pressurizes, by sliding against the cylinder, the fluid in the compression chamber. It is structured such that the fluid sucked into the compression chamber by reciprocating motion of the plunger is pressurized and is then discharged from the compression chamber. The cylinder is formed of a cylindrical member which has a ceiling portion and in which the compression chamber is partitionedly formed. A fuel suction path formed in the pump housing reaches the compression chamber through the cylinder and a fuel discharge path formed in the pump housing is connected to the compression chamber through the cylinder. The cylinder is pressed against the pump body by a fuel pressurizing force applied to the cylinder.

摘要翻译： 高压燃料泵包括：缸体，其安装在形成在泵壳体中的凹部中，并且限定泵的压缩室;以及柱塞，该柱塞通过与气缸滑动而对压缩室中的流体进行加压。 其结构使得通过柱塞的往复运动吸入压缩室的流体被加压，然后从压缩室排出。 气缸由具有顶部的圆柱形构件形成，并且压缩室被分隔成形。 形成在泵壳体中的燃料吸入路径通过气缸到达压缩室，并且形成在泵壳体中的燃料排出路径通过气缸连接到压缩室。 气缸通过施加到气缸的燃料加压力压靠在泵体上。

公开(公告)号：US07513240B2

公开(公告)日：2009-04-07

申请号：US11622170

申请日：2007-01-11

申请人： Satoshi Usui ,  Hiroshi Odakura ,  Toru Onose ,  Atsuji Saito ,  Masami Abe ,  Hiroyuki Yamada

发明人： Satoshi Usui ,  Hiroshi Odakura ,  Toru Onose ,  Atsuji Saito ,  Masami Abe ,  Hiroyuki Yamada

IPC分类号： F02M59/46

CPC分类号： F02M37/0041 ,  F02D33/003 ,  F02M37/0047 ,  F02M55/04 ,  F02M59/366 ,  F02M59/44 ,  F02M63/0001 ,  F02M63/0225 ,  F02M2200/04 ,  F02M2200/24 ,  F02M2200/247 ,  F02M2200/315 ,  F04B11/0016 ,  F04B49/243 ,  F04B2205/01 ,  F04B2205/02 ,  F04B2205/05

摘要： A fuel feed system capable of feeding a fuel to fuel injection valves at a fuel pressure with improved stability is provided. A fuel feed system for an internal combustion engine including a fuel tank and a low-pressure pump for feeding the fuel in the fuel tank to fuel injection valves, is provided with a diaphragm type damper having a wave-shape cross section at a position in contact with the fuel. Also, in a high-pressure fuel feed pump including a pressurizing chamber for pressurizing the fuel, a plunger for pumping the fuel within the pressurizing chamber, an intake valve provided at a fuel inlet of the pressurizing chamber, a discharge valve provided at a fuel outlet of the pressurizing chamber, and a low-pressure chamber provided in an upstream of the intake valve, a mechanism for reducing fuel pressure pulsation is disposed in a space of the low-pressure chamber provided in the upstream of the intake valve, and a fuel pressure sensor for measuring the fuel pressure is mounted near the mechanism for reducing fuel pressure pulsation.

摘要翻译： 提供一种能够以具有改善的稳定性的燃料压力向燃料喷射阀供给燃料的燃料供给系统。 一种用于内燃机的燃料供给系统，其包括用于将燃料箱中的燃料供给到燃料喷射阀的燃料箱和低压泵，具有在其位置处具有波形截面的膜片式阻尼器 与燃料接触。 此外，在包括用于对燃料加压的加压室的高压燃料供给泵中，用于泵送加压室内的燃料的柱塞，设置在加压室的燃料入口的进气阀，设置在燃料的排出阀 加压室的出口以及设置在进气阀的上游的低压室，设置在进气阀的上游的低压室的空间内配置有用于降低燃料压力脉动的机构， 用于测量燃料压力的燃料压力传感器安装在用于降低燃料压力脉动的机构附近。

公开(公告)号：US07165534B2

公开(公告)日：2007-01-23

申请号：US10274034

申请日：2002-10-21

申请人： Satoshi Usui ,  Hiroshi Odakura ,  Toru Onose ,  Atsuji Saito ,  Masami Abe ,  Hiroyuki Yamada

发明人： Satoshi Usui ,  Hiroshi Odakura ,  Toru Onose ,  Atsuji Saito ,  Masami Abe ,  Hiroyuki Yamada

IPC分类号： F02M37/04

CPC分类号： F02M37/0041 ,  F02D33/003 ,  F02M37/0047 ,  F02M55/04 ,  F02M59/366 ,  F02M59/44 ,  F02M63/0001 ,  F02M63/0225 ,  F02M2200/04 ,  F02M2200/24 ,  F02M2200/247 ,  F02M2200/315 ,  F04B11/0016 ,  F04B49/243 ,  F04B2205/01 ,  F04B2205/02 ,  F04B2205/05

摘要： A fuel feed system capable of feeding a fuel to fuel injection valves at a fuel pressure with improved stability is provided. A fuel feed system for an internal combustion engine including a fuel tank and a low-pressure pump for feeding the fuel in the fuel tank to fuel injection valves, is provided with a diaphragm type damper having a wave-shape cross section at a position in contact with the fuel. Also, in a high-pressure fuel feed pump including a pressurizing chamber for pressurizing the fuel, a plunger for pumping the fuel within the pressurizing chamber, an intake valve provided at a fuel inlet of the pressurizing chamber, a discharge valve provided at a fuel outlet of the pressurizing chamber, and a low-pressure chamber provided in an upstream of the intake valve, a mechanism for reducing fuel pressure pulsation is disposed in a space of the low-pressure chamber provided in the upstream of the intake valve, and a fuel pressure sensor for measuring the fuel pressure is mounted near the mechanism for reducing fuel pressure pulsation.

摘要翻译： 提供一种能够以具有改善的稳定性的燃料压力向燃料喷射阀供给燃料的燃料供给系统。 一种用于内燃机的燃料供给系统，其包括用于将燃料箱中的燃料供给到燃料喷射阀的燃料箱和低压泵，具有在其位置处具有波形截面的膜片式阻尼器 与燃料接触。 此外，在包括用于对燃料加压的加压室的高压燃料供给泵中，用于泵送加压室内的燃料的柱塞，设置在加压室的燃料入口的进气阀，设置在燃料的排出阀 加压室的出口以及设置在进气阀的上游的低压室，设置在进气阀的上游的低压室的空间内配置有用于降低燃料压力脉动的机构， 用于测量燃料压力的燃料压力传感器安装在用于降低燃料压力脉动的机构附近。