公开(公告)号：US06789459B2

公开(公告)日：2004-09-14

申请号：US10257714

申请日：2002-10-16

Applicant: Masaaki Sano ,  Kazuhiro Asayama ,  Hiroshi Inoue

Inventor： Masaaki Sano ,  Kazuhiro Asayama ,  Hiroshi Inoue

IPC: F16J1518

CPC classification number: F02M59/44 ,  F02M59/102 ,  F02M59/442 ,  F04B53/164 ,  F04B2201/0208

Abstract: A high pressure fuel pump includes a cylinder having a pressurizing chamber and a plunger inserted into the cylinder. The plunger is axially reciprocated by a lifter to pressurize fuel in the pressurizing chamber. A seal member encompasses a portion of the plunger that is projected from the cylinder. The seal member disconnects a cylinder side space surrounded by the seal member from a lifter side space outside the seal member. The seal member has an annular lip portion that contacts a peripheral surface of the plunger, and the annular lip portion has a pair of lips separated from each other in an axial direction of the plunger. An axial distance between the lips is greater than a stroke of the plunger. As a result, fuel does not enter the lifter side space, and lubricating oil does not enter the cylinder side space.

Abstract translation: 高压燃料泵包括具有加压室和插入气缸中的柱塞的气缸。 柱塞由提升器轴向往复运动，以对加压室中的燃料加压。 密封构件包括从气缸突出的柱塞的一部分。 密封构件将由密封构件包围的气缸侧空间与密封构件外侧的升降器侧空间断开。 密封构件具有与柱塞的周面接触的环形唇部，并且环形唇部具有在柱塞的轴向上彼此分离的一对唇缘。 嘴唇之间的轴向距离大于柱塞的行程。 结果，燃料不进入升降器侧空间，润滑油不会进入气缸侧空间。

公开(公告)号：US20030136260A1

公开(公告)日：2003-07-24

申请号：US10257714

申请日：2002-10-16

Inventor： Masaaki Sano ,  Kazuhiro Asayama ,  Hiroshi Inoue

IPC: F16J015/18

CPC classification number: F02M59/44 ,  F02M59/102 ,  F02M59/442 ,  F04B53/164 ,  F04B2201/0208

Abstract: A high pressure fuel pump includes a cylinder having a pressurizing chamber and a plunger inserted into the cylinder. The plunger is axially reciprocated by a lifter to pressurize fuel in the pressurizing chamber. A seal member encompasses a portion of the plunger that is projected from the cylinder. The seal member disconnects a cylinder side space surrounded by the seal member from a lifter side space outside the seal member. The seal member has an annular lip portion that contacts a peripheral surface of the plunger, and the annular lip portion has a pair of lips separated from each other in an axial direction of the plunger. An axial distance between the lips is greater than a stroke of the plunger. As a result, fuel does not enter the lifter side space, and lubricating oil does not enter the cylinder side space.

Abstract translation: 高压燃料泵包括具有加压室和插入气缸中的柱塞的气缸。 柱塞由提升器轴向往复运动，以对加压室中的燃料加压。 密封构件包括从气缸突出的柱塞的一部分。 密封构件将由密封构件包围的气缸侧空间与密封构件外侧的升降器侧空间断开。 密封构件具有与柱塞的周面接触的环形唇部，并且环形唇部具有在柱塞的轴向上彼此分离的一对唇缘。 嘴唇之间的轴向距离大于柱塞的行程。 结果，燃料不进入升降器侧空间，润滑油不会进入气缸侧空间。

公开(公告)号：US5108264A

公开(公告)日：1992-04-28

申请号：US570183

申请日：1990-08-20

Applicant: Mahmoud F. Abdel-Rahman

Inventor： Mahmoud F. Abdel-Rahman

IPC: F04B13/00 ,  F04B11/00 ,  F04B49/06 ,  G01N30/02 ,  G01N30/32 ,  G01N30/88

CPC classification number: F04B11/0075 ,  F04B49/065 ,  F04B2201/0208 ,  F04B2201/0605 ,  F04B2205/03 ,  F04B2205/05 ,  F04B2205/09 ,  F04B2205/11 ,  G01N2030/324 ,  G01N2030/326 ,  G01N2030/8804 ,  G01N30/02

Abstract: The invention is a method and apparatus for significantly improving the performance of a reciprocating pump by delivering the pumping fluid at a desired pressure and flow rate with minimal flow fluctuations. The compressibility of the pumping fluid directly effects volumetric flow rate and mass flow rate. The method includes the step of sensing various pump parameters related to said compressibility and adjusting the pumping speed to make appropriate accommodations. In particular, the compressibility of the pumping fluid is effected by the adiabatic heating of the pumping fluid during compression, variations in pumping fluid density, leaks in the check valves of cylinder/piston seals and the primary and secondary switching losses in the fluid flow occurring when the primary and secondary pistons reverse direction.

Abstract translation: 本发明是通过以最小的流动波动以期望的压力和流速递送泵送流体来显着地改善往复式泵的性能的方法和装置。 泵送流体的压缩性直接影响体积流量和质量流量。 该方法包括检测与所述压缩性相关的各种泵参数并调节泵送速度以适当调节的步骤。 特别地，泵送流体的压缩性通过压缩期间泵送流体的绝热加热，泵送流体密度的变化，气缸/活塞密封件的止回阀中的泄漏以及流体流动中的主要和次要切换损失来实现 当主活塞和次级活塞反转时。

公开(公告)号：US4086029A

公开(公告)日：1978-04-25

申请号：US747569

申请日：1976-12-06

Applicant: Robert M. Crane ,  Fletcher H. Redwine

Inventor： Robert M. Crane ,  Fletcher H. Redwine

IPC: F04B53/16 ,  F16J15/00 ,  F16J15/40 ,  F01B31/00 ,  F04B39/00

CPC classification number: F16J15/008 ,  F04B53/164 ,  F16J15/40 ,  F04B2201/0208

Abstract: A method and apparatus for flushing the plunger of a positive displacement pump which handles a suspension of abrasive particles. Flush liquid is introduced at two or more locations to the packing surrounding the pump plunger. The larger volume of flush liquid is introduced in front of the packing to wash abrasive particles from the plunger in the usual manner. A smaller volume is introduced intermediate front and back sets of packing rings. Initially the back packing rings provide the seal for the plunger, but when they wear, flush liquid from between the two sets of packing rings leaks past the back packing rings to furnish an indication of the wear. The front packing rings now provide the seal, and it is known that the back packing rings should be replaced.

Abstract translation: 用于冲洗处理磨料颗粒悬浮液的容积式泵的柱塞的方法和装置。 冲洗液体在两个或更多个位置被引入到围绕泵柱塞的密封件上。 将较大量的冲洗液体引入填料前面，以常规方式从柱塞中洗涤磨料颗粒。 较小的体积被引入中间正面和后面的包装环组。 最初，背衬环为柱塞提供密封，但是当它们磨损时，两组填料环之间的冲洗液体从后填充环泄漏出来，以提供磨损指示。 前密封圈现在提供密封，并且已知背包装环应该被更换。

公开(公告)号：US3995822A

公开(公告)日：1976-12-07

申请号：US630277

申请日：1975-11-10

Applicant: Ruediger Einhorn ,  Lee Richard Chasen

Inventor： Ruediger Einhorn ,  Lee Richard Chasen

IPC: F16B45/00 ,  F16G15/08 ,  A47F5/00 ,  E06B7/28

CPC classification number: F16G15/08 ,  F16B45/00 ,  F04B2201/0208 ,  Y10T24/45969

Abstract: A swivel hook has a hook member with a frustoconical projection terminating in a cylindrical extension of diameter less than the smaller diameter end of the frustoconical portion. The mounting member for the swivel hook has a frustoconical hole into which the frustoconical projection is fitted. The elements of the swivel hook are adapted to be cast of a metal or molded of a plastic, in such a manner that the bearing surfaces of one of the elements forms a part of the die for the bearing surfaces of the other element. During the casting or molding process, the cylindrical extension is beyond the frustoconical hole, and the elements are moved relative to each other following casting or molding to move the cylindrical extension into alignment with the frustoconical hole.

Abstract translation: 旋转钩具有钩形构件，该钩构件具有终止于直径小于截头圆锥形部分的较小直径端的圆柱形延伸部的截头圆锥形突出部。 用于旋转钩的安装构件具有截头圆锥形孔，截头圆锥形突起装配到该孔中。 旋转钩的元件适于铸造金属或由塑料模制，使得其中一个元件的支承表面形成用于另一元件的支承表面的模具的一部分。 在铸造或模制过程中，圆柱形延伸部超出截头圆锥孔，并且元件在铸造或模制之后相对于彼此移动以使圆柱形延伸部与截头圆锥孔对准。

公开(公告)号：USB367021I5

公开(公告)日：1975-01-28

申请号：US36702173

申请日：1973-06-04

IPC: F04B49/10 ,  F04B53/16 ,  F16J15/00

CPC classification number: F16J15/008 ,  F04B49/10 ,  F04B53/164 ,  F04B2201/0208